embedded in the table-deck portion. The embedded metal parts
can include templates, bolts, anchor blocks, and so forth.
.{0004}
Upon producing (hereinafter referred to as "building")
the concrete platform as mentioned above, form is put in
place, and fresh concrete is subsequently introduced side
the form, in other words, fresh concrete is poured.
{0005}
Known form includes one that is removed after the
concrete is poured (for example, see PTL 1) and one that makes
up part of a concrete platform without being removed (for
example, see PTL 2).
{0006}
For example, when the concrete platform is built , sing
the form described in PTL 1, in order to construct a
reinforced c oncrete beam, which has a large sectional area, of
the table-deck portion, the form, supports for supporting the
form, scaffolding, and so forth are first put in place.
Thereafter, fresh concrete is poured. Once the reinforced
concrete beam has been constructed, the form, the support, the
scaffolding, and so forth are removed.
{0007}
For example, when the concrete platform is built using
the form described in PTL 2, in other words, steel form, in
order to construct a reinforced concrete beam, which has a

large sectional area, of the table-deck portion, as in the
case with PTL 1, fresh concrete is poured after the steel
form, supports for supporting the form, scaffolding, and so
forth are put in place first.
Although the supports, the scaffolding, and so forth are
removed thereafter, the steel form is not removed and it makes
up part of the concrete platform.
{Citation List}
{Patent Literature}
{0008}
{PTL 1} Japanese Unexamined Patent Application, Publication
No. 2001-027281
{PTL 2} Japanese Unexamined Patent Application, Publication
No. Shou 59-006495
{Summary of Invention}
{Technical Problem}
{0009}
However, because the form, the supports, the scaffolding,
and so forth are required in the process described in the
above-mentioned PTL 1, there has been a problem in that the
construction period required for building a concrete platform
is extended. In particular, there have been problems in that
the form and the supports for supporting the form must be put
in place and then removed, which extends the construction
period.

At the same time, because embedded metal parts that are
embedded in the table-deck portion are required to be set at a
prescribed accuracy, there has been a problem in that the
construction period is extended even further.
{0010}
On the other hand, because the steel form, which is
fabricated in a factory, is used in the process described in
the above-mentioned PTL 2, a reduction in the construction
period at the building site of the concrete platform can be
achieved.
{0011}
However, when the steel form is used, because the steel
form deforms upon pouring of the fresh concrete, additional
separate supports are required for supporting the steel form.
Therefore, the separate supports are required to be put in
place and then removed, resulting in the problem that the
construction period is extended.
Because the steel form is made of steel, the steel form
is required to be produced in a factory, and this results in
the need for transport in a container. Thus, there has been a
problem in that, in comparison with conventional form made of
wood, the cost of the transport etc. becomes high.
{0012}
The present invention has been conceived to solve the
problems described above, and an object thereof is to provide

a concrete platform production process that is capable of
reducing a construction period and capable of preventing an
increase in the costs of building a concrete platform, as well
as a concrete platform and a connecting member.
{Solution to Problem}
{0013}
In order to realize the object described above, the
present invention provides the following solutions.
A process for producing a concrete platform according to
a first aspect of the present invention is a process for
producing a concrete platform on which an object to be
supported is fixed, including: a step of forming form having a
pair of concrete side walls and a concrete bottom slab that
connects the pair of side walls; a step of setting the form on
a plurality of piers; and a step of pouring concrete into the
form that is set on the plurality of piers.
{0014}
According to a process for producing a concrete platform
according to the first aspect of the present invention, the
step of making the form and the step of building the plurality
of piers can be conducted simultaneously, and at the same
time, the form can be made at a different site from the
construction site of a plurality of piers, in other words, the
construction site of the concrete platform. Therefore, a
reduction in the construction period, that is, the production

period of the concrete platform, can be afforded.
Furthermore, because the form is made of concrete, the
form is not required to be removed after the concrete has been
poured into the form, and therefore, the construction period
can be reduced.
{0015}
On the other hand, when form made of steel plates is
used, it is necessary to perform welding management, and it is
necessary to make the form in a factory in order to ensure
dimensional precision. In contrast, when form made of
concrete is used, because the form can be made integrally, it
is not necessary to perform welding management etc.
Therefore, the site for producing the form is not limited to
the factory; the form can be produced at a suitable site close
to the construction site, and it is possible to reduce the
costs related to transport of the form.
{0016}
Furthermore, because concrete is poured after the form
having the pair of side walls and the bottom slab has been set
on the piers, a reduction in the size of a crane used for
setting the form can be afforded compared with a case where
the form into which concrete has been poured is set on the
piers, or a case where a concrete table-deck portion from
which the form has been removed after concrete has been poured
is set on the piers.

{0017}
In the process for producing a concrete platform
according to the first aspect of the present invention, in the
step of setting the form on the plurality of piers, the form
may be set on the plurality of piers after a connecting member
that connects each of the upper edge portions of the pair of
side walls of the form by being placed on the upper edge
portions is attached to the pair of side walls.
{0018}
According to this configuration, by connecting each of
the upper edge portions of the pair of side walls by the
connecting member, a part of the cross-section of the form
forms a box-structure; therefore, it is possible to prevent a
reduction in the sectional stiffness of form due to the
widening of the gap between the side wall edge portions (upper
edges). Therefore, deformation of the form during pouring of
the concrete is prevented, and no supports for supporting the
form need to be set.
{0019}
On the other hand, if steel form is used, in order to
prevent a reduction in the sectional stiffness of the form,
stiffening parts for maintaining the relative positions
between the side walls and the bottom slab may be provided on
the bonding portions between the side walls and the bottom
slabs. However, if the stiffening parts are provided, because

the internal cross-sectional area (internal space) of the form
becomes smaller, the space available for arranging the
reinforcing bars (internal space in the form) will be limited.
{0020}
In this case, in the space for arranging the reinforcing
bars of the form, the reinforcing bars will not be able to be
arranged in the region in the vicinity of the bottom slab,
where the bending stress acting thereon is large. As a
result, the strength of the table-deck portion can be lowered.
In the case of concrete form, which has a greater form
thickness compared with steel form, the impact is particularly
significant. This problem can be solved by connecting each of
the upper edge portions of the pair of side walls by using the
connecting member in the present invention.
{0021}
In the process for producing a concrete platform
according to the first aspect of the present invention, an
attachment part that is partially embedded in concrete that is
poured into the form so as to fix the object to be supported
may be aligned with the connecting member in a positionable
manner.
{0022}
According to this configuration, because the arrangement
positions of the attachment parts are maintained with the
connecting member, it is possible to align the attachment

parts easily and with high precision without using a separate
massive template and temporary supporting members that
temporarily support this template from above. Furthermore,
the construction period can be reduced compared with a process
where the attachment parts are arranged directly in the form
and their arrangement positions are adjusted.
Here, the attachment part can include, for example,
a metal part that is used for fixing a heavy structure that is
mounted on the concrete platform, and can include an embedded
metal part etc., such as an anchor bolt.
{0023}
In the process for producing a concrete platform
according to the first aspect of the present invention, the
connecting member may be removed from the upper edge portions
of the pair of side walls after the step of pouring concrete.
{0024}
According to this configuration, it is possible to reuse
the connecting member.
{0025}
A concrete platform according to a second aspect of the
present invention is produced by the process for producing a
concrete platform according to the above-mentioned present
invention.
{0026}
According to the concrete platform of the second aspect

of the present invention, by making the form from concrete,
the form is not required to be removed, and it is possible to
reduce the construction period compared with a case where form
made of wood etc. is used.
{0027}
In addition, when steel form is used, it is necessary to
perform welding management, and it is necessary to make the
form in a factory in order to ensure dimensional precision.
In contrast, when form made of concrete is used, it is not
necessary to perform welding management etc. Therefore, the
site for producing the form is not limited to a factory; the
form can be produced at a suitable site close to the
construction site, and it is possible to reduce costs related
to transport of the form.
{0028}
A connecting member according to a third aspect of the
present invention is a connecting member that is used in the
process for producing a concrete platform according to the
above-mentioned present invention, including: an elongated
member that is formed to have substantially the same length as
the gap between the pair of side walls of the form; a fixing
member that anchors the attachment part to the elongated
member; and an adjusting part that enables the attachment part
to move along the top surface of the taole-deck portion that
is formed by pouring concrete into the form.

{0029}
According to the connecting member of the third aspect of
the present invention, the connecting member is composed of an
elongated member, thereby affording weight saving. By doing
so, the connecting member can easily be attached to and
detached from the form. In addition, by using the adjusting
parts, the arrangement positions of the attachment parts are
two-dimensionally adjustable along the top surface of the
table-deck portion, in other words, in the horizontal plane.
{Advantageous Effects of Invention}
{0030}
According to a concrete platform production process, a
concrete platform, and a connecting member of the present
invention, form having a pair of concrete side walls and a
concrete bottom slab that connects the pair of side walls is
formed, and concrete is poured into the form after the form is
set on a plurality of piers; therefore, advantages are
afforded in that the construction period can be reduced, and
an increase in the building costs can be prevented.
{Brief Description of Drawings}
{0031}
{Fig. 1} Fig. 1 is a schematic view for explaining the
configuration of a turbine generator platform according to one
embodiment of the present invention.
{Fig. 2} Fig. 2 is a sectional view, taken along line A-A,

for explaining the configuration of the table-deck portion of
Fig. 1.
{Fig. 3} Fig. 3 is a view for explaining construction steps
of the platform in Fig. 1.
{Fig. 4} Fig. 4 is a schematic view for explaining a state in
which piers in Fig. 1 are constructed.
{Fig. 5} Fig. 5 is a sectional view for explaining the
configuration of form in Fig. 1.
{Fig. 6} Fig. 6 is a schematic view for explaining a state in
which the form is set on the piers in Fig. 4.
{Fig. 7} Fig. 7 is a perspective view for explaining the
configuration of the form that is set on the piers in Fig. 6.
{Fig. 8} Fig. 8 is a sectional view for explaining the
configuration of the form in Fig. 6 before inner concrete is
poured.
{Fig. 9} Fig. 9 is a schematic view for explaining a state
for constructing connecting portions between the piers and the
form.
{Description of Embodiments}
{0032}
A platform according to an embodiment of this invention
will be described with reference to Figs. 1 to 9.
Fig. 1 is a schematic view for explaining the
configuration of a turbine generator platform according to
this embodiment.

A platform (concrete platform) 1 is a structure onto
which a turbine (a steam turbine or a gas turbine) or a
generator is mounted and is a structure mainly formed of
concrete and reinforcing bars.
{0033}
In this embodiment, the present invention is described as
applied to the platform 1 onto which a turbine or a generator
is mounted. However, the object to be mounted on the platform
1 is not limited to a turbine or a generator, and it includes
other heavy structures, including those that vibrate during
operation; it is not particularly limited.
{0034}
As shown in Fig. 1, the platform 1 is mainly provided
with a plurality of piers 2 and a table-deck portion 3.
As shown in Fig. 1, the piers 2 are members that extend
upwards from the ground G, and are mainly formed of concrete
and reinforcing bars to support the table-deck portion 3.
Known structures can be used for the piers 2, and they are not
particularly limited.
{0035}
As shown in Fig. 1, the table-deck portion 3 is a beam
member that is arranged over the upper ends (the ends at the
upper side in Fig. 1) of the piers 2, and a turbine or a
generator is mounted thereon.
{0036}

Fig. 2 is a sectional view, taken along line A-A, for
explaining the configuration of the table-deck portion in Fig.
1.
As shown in Figs. 1 and 2, the table-deck portion 3 is
mainly provided with form 4, a load portion 5, embedded metal
parts (attachment parts) 6, and so forth.
{0037}
As shown in Fig. 2, the form 4 forms the side surfaces
and the bottom surface of the table-deck portion 3, and the
load portion 5, the embedded metal parts 6, and so forth are
arranged inside the form 4. Furthermore, the form 4 is formed
so as to have a U-shaped cross-section, and so as to extend
between the piers 2.
{0038}
The form 4 is mainly formed of concrete and reinforcing
bars, and as shown in Fig. 2, is produced in one integral form
from a bottom slab 42 and a pair of side walls 41 that are
erected on both edges of this bottom slab 42. The form 4 can
have a size, for example, equal to or more than 2 m in width
and equal to or more than 2 m in height.
{0039}
The respective side walls 41 are formed into a plate
shape, and they form the side surfaces of the table-deck
portion 3 and also the side surfaces of the form 4. The side
walls 41 can have a size of, for example, about 150 mm to 200

mm in plate thickness and equal to or more than 2 m in the
height-wise dimension.
The side walls 41 are mainly provided with side-wall
concrete portions 41A and side-wall tension parts 41B.
{0040}
The side-wall concrete portions 41A mainly form the side
walls 41, and they are precast concrete that has been poured
separately from an inner concrete portion 51 in the load
portion 5.
The side-wall tension parts 41B are linear reinforcing
members extending in the longitudinal direction of the table-
deck portion 3 (a direction perpendicular to the plane of the
drawing in Fig. 2), and the side-wall tension parts 41B
compress the side-wall concrete portions 41A in their
longitudinal direction, by being arranged inside the side-wall
concrete portions 41A in a state tensioned in the above-
mentioned longitudinal direction.
{0041}
This embodiment is described as applied to an example in
which the side-wall tension parts 41B are arranged on the
upper edge side of the side-wall concrete portions 41A (the
upper edge portion side in Fig. 2).
{0042}
The bottom slab 42 is formed into a plate-shape, and the
bottom slab 42 forms the bottom surface of the table-deck

portion 3 and also the bottom surface of the form 4. The
bottom slab 42 can have a size of, for axample, about 150 mm
to 200 mm in plate thickness and equal to or more than 2 m in
the width-wise dimension.
The bottom slab 42 is mainly provided with a bottom slab
concrete portion 42A and bottom slab tension parts 42B.
{0043}
The bottom slab concrete portion 42A mainly forms the
bottom slab 42, and it is precast concrete that has been
poured separately from the inner concrete portion 51 in the
load portion 5.
The bottom slab tension parts 42B are linear reinforcing
members extending in the longitudinal direction of the table-
deck portion 3, and the bottom slab tension parts 42B compress
the bottom slab concrete portion 42A in its longitudinal
direction, by being arranged inside the bottom slab concrete
portion 42A in a state tensioned in the above-mentioned
longitudinal direction.
This embodiment is described as applied to an example in
which a plurality of bottom slab tension parts 42B are
arranged in one line, at equal intervals, within the bottom
slab concrete portion 42A.
{0044}
Known members, such as wires, reinforcing bars, and so
forth, can be used as the side-wall tension parts 41B and the

bottom slab tension parts 42B, and they are not particularly
limited.
{0045}
This embodiment illustrates an example in which the side
walls 41 and the bottom slab 42 forming the form 4 are
produced in one integral form; however, the embodiment is not
particularly limited to this form, and separately produced
ones may be connected.
{0046}
The load portion 5 is arranged inside the form 4 to form
the table-deck portion 3 together with the form 4 and supports
a turbine or a generator that is mounted on the table-deck
portion 3.
The load portion 5 is mainly provided with the inner
concrete portion 51 and inner reinforcing bars 52.
{0047}
The inner concrete portion 51 mainly forms the load
portion 5 and mainly receives force related to compressive
stress among the forces acting on the table-deck portion 3.
Furthermore, the inner concrete portion 51 is formed by
pouring concrete into the form 4 and is formed separately from
the side-wall concrete portions 41A and the bottom slab
concrete portion 42A of the form 4.
{0048}
The inner reinforcing bars 52 are linear reinforcing

members that have been placed throughout the load portion 5
and that mainly receive the force related to tensile stress
among the force acting on the table-deck portion 3. Any known
arrangement pattern can be used for the inner reinforcing bars
52, and it is not particularly limited.
{0049}
As shown in Figs. 1 and 2, the embedded metal parts 6 are
partially embedded in the top surface (the surface on the
upper side in Fig. 1) of the table-deck portion 3 and are used
for fixing a turbine or a generator that is to be mounted on
the table-deck portion 3. Examples of the embedded metal
parts 6 can include anchor bolts, anchor blocks and so forth.
{0050}
A construction step (production process) of the platform
1 having the above-mentioned configuration will be explained
below.
Fig. 3 is a view for explaining a construction step of
the platform in Fig. 1. Fig. 4 is a schematic view for
explaining a state in which the piers in Fig. 1 are
constructed. Fig. 5 is a sectional view for explaining the
configuration of the form in Fig. 1.
As shown in Figs. 3 and 4, in the construction of the
platform 1 of this embodiment, a step for constructing the
piers 2 (Step S1) is conducted, and as shown in Figs. 3 and 5,
a step for forming the form 4 (Step S2) is conducted

concurrently.
{0051}
As shown in Fig. 4, in the step for constructing the
piers 2, a plurality of piers 2 are constructed on the ground
G.
On the other hand, as shown in Fig. 5, in the step for
forming the form 4, the form 4, having the pair of side walls
41 and the bottom slab 42 that are arranged in the U-shape, is
formed at a different site from the construction site of the
platform 1. More specifically, when the side-wall concrete
portions 41A of the side walls 41 and the bottom slab concrete
portion 42A of the bottom slab 42 are formed, the side-wall
tension parts 41B and the bottom slab tension parts 42B are
respectively embedded in a longitudinal tensioned state. By
doing so, compressive stress in the longitudinal direction is
applied to the side-wall concrete portions 41A and the bottom
slab concrete portion 42A.
{0052}
By doing so, for example, even when the table-deck
portion is deformed downward and tensile force acts on the
form 4 that forms the side surfaces and the bottom surface of
the table-deck portion, because the compressive stress is pre-
applied to the side-wall concrete portions 41A and the bottom
slab concrete portion 42A, the tensile stress is prevented
from acting, or the tensile stress is reduced.

{0053}
The thus-formed form 4 is transported to the construction
site of the piers 2, in other words, the construction site of
the platform 1, by transportation means, such as a trailer.
{0054}
Fig. 6 is a schematic view for explaining a state in
which the form is placed on the piers of Fig. 4.
Once the form 4 is transported to the construction site
of the platform 1, a step of setting the form 4 on the piers
2, as shown in Figs. 3 and 6, is conducted (Step S3).
{0055}
Fig. 7 is a perspective view for explaining the
configuration of the form that is set on the piers in Fig. 6.
As shown in Fig. 7, when the form 4 is set on the piers
2, an upper-surface connecting part (connecting member) 7 is
set on the form 4. The upper-surface connecting part 7 is
arranged over the upper edge portions of the side walls 41 of
the form 4 so as to connect the upper edge portions of the
pair of side walls 41.
{0056}
The upper-surface connecting part 7 is an elongated
member that is formed to have substantially the same length as
the gap between the pair of side walls 41 of the form 4. The
upper-surface connecting part 7 is provided with two slotted
holes 71 that extend in the longitudinal direction of the

upper-surface connecting part 7 so as to be aligned along the
longitudinal direction.
In addition, the upper-surface connecting part 7 is
provided with, on the four corners thereof, projecting
portions 74, each having a slotted hole 75 that extends in the
width-wise direction of the upper-surface connecting part 7.
The embedded metal parts 6 are anchored to the upper-surface
connecting part 7 by being fastened by nuts 61 in a state
inserted though the slotted holes 71.
{0057}
By attaching the upper-surface connecting part 7, the
part of the form 4 having a U-shaped cross-section forms a
box-structure; therefore, it is possible to prevent a
reduction in the sectional stiffness due to widening of the
gap between the side-wall edge portions (the upper edges).
Therefore, when the form 4 is hoisted, when the form 4 is set
on a plurality of piers 2, and then, when concrete is poured
into the form 4 to form the inner concrete portion 51, because
the gap between the upper edges of the side walls 41 does not
become wider, the form 4 becomes more resistant to
deformation.
{0058}
The upper-surface connecting part 7 is attached to the
form 4, for example, as described below.
The upper-surface connecting part 7 is first positioned

such that the upper-surface connecting part 7 is set over the
upper edge portions of the pair of side walls 41. Next, as
shown in Fig. 7, anchor bolts 73 are inserted into the
respective slotted holes 75 provided in the projecting
portions 74. Then, these anchor bolts 73 are fastened to the
upper edge portions of the pair of side walls 41.
{0059}
Side panels 72 are bonded to both side surfaces (both end
surfaces in longitudinal direction) of the upper-surface
connecting part 7 by welding or another bonding process.
Here, only the upper half portions of the side panels 72 are
bonded. Therefore, the lower portions of the side panels 72
can hold the pair of side walls 41 from both sides. In this
way, the side panels 72 and the anchor bolts cooperate to
prevent the gap between the upper edges of the side walls 41
from being widened.
{0060}
In the case of steel form, in order to prevent a
reduction in the sectional stiffness, stiffening parts for
maintaining the relative positions between the side walls 41
and the bottom slab 42 may be provided on the bonding portions
between the side walls 41 and the bottom slab 42. However, by
providing the stiffening parts, the cross-sectional area of
the interior of the form 4, in other words, the inner concrete
portion 51, becomes smaller, and the space available for

arranging the reinforcing bars 52 will be limited.
In addition, the reinforcing bars 52 will not be arranged
in the vicinity of the bottom slab 42 within the inner
concrete portion 51 where the bending stress is large; as a
result, there is a possibility that the strength of the table
deck will be lowered. In the case of concrete form, which has
a greater thickness compared with steel form, the impact is
particularly significant.
{0061}
This problem can be solved by connecting the upper edge
portions of the pair of side walls by using the upper-surface
connecting part 7 according to the present invention. By
attaching the upper-surface connecting part 7 so as to be set
over the pair of side walls 41 in this way, when the form 4 is
hoisted by a crane and when concrete is poured into the form 4
to form the inner concrete portion 51, the gap between the
upper edge portions of the pair of side walls 41 is prevented
from being widened.
{0062}
Fig. 8 is a sectional view for explaining the
configuration of the form of Fig. 6 before the inner concrete
is poured.
Furthermore, as shown in Fig. 8, the inner reinforcing
bars 52 of the load portion 5 are arranged inside the form 4.
At the same time, as shown in Fig. 7, the embedded metal

parts 6 are supported by the slotted holes 71 provided in the
upper-surface connecting part 7, and the arrangement positions
of the embedded metal parts 6 are maintained by the upper-
surface connecting part 7.
{0063}
Fig. 9 is a schematic view for explaining a state for
constructing connecting portions between the piers and the
form.
As shown in Figs. 3 and 9, a step of constructing
connecting portions 21 is conducted after the form 4 is set on
the piers 2 (Step S4).
The connecting portions 21 connect the piers 2 with the
form 4, in other words, with the table-deck portion 3, and
connect both end portions of the form 4 with the upper ends of
the piers 2.
{0064}
More specifically, the construction is conducted as
described below.
The form 4 is first placed on the two piers 2 such that
the form 4 is set on the two piers 2. Next, the reinforcing
bars provided inside the form 4 and the reinforcing bars
sticking out from the upper ends of the piers 2 are connected
by reinforcing bars for connection. Then, form 22 is set
around the space in which the connected reinforcing bars are
positioned.

{0065}
Thereafter, as shown in Fig. 3, a step of adjusting the
arrangement positions of the embedded metal parts 6 is
conducted (Step S5). For example, as shown in Fig. 7, the
arrangement positions of the embedded metal parts 6 are
adjusted by moving the embedded metal parts 6 along the
slotted hole 71 of the upper-surface connecting part 7.
Furthermore, by loosening the two anchor bolts 73, the
upper-surface connecting part 7 can be shifted in its width-
wise direction to achieve fine adjustment. By doing so, two-
dimensional fine adjustment of the embedded metal parts 6 in
the horizontal plane can be conducted.
{0066}
In this embodiment, although a configuration in which the
slotted holes 71 extend in the longitudinal direction of the
upper-surface connecting part 7 and the slotted holes 75
extend in the width-wise direction of the upper-surface
connecting part 7 is illustrated, a configuration in which the
slotted holes 71 extend in the width-wise direction of the
upper-surface connecting part 7 and the slotted holes 75
extend in the longitudinal direction of the upper-surface
connecting part 7 is also possible.
{0067}
Thereafter, as shown in Fig. 3, concrete is poured into
the form 4 to form the inner concrete portion 51, and at the

same time, concrete is also poured into the form 22, and a
concrete curing step is conducted (Step S6).
{0068}
As shown in Fig. 2, once the concrete is poured into the
form 4 to form the inner concrete portion 51, the interior of
the form 4 is filled with the inner concrete portion 51 to
form the load portion 5, and parts of the embedded metal parts
6 are embedded in the inner concrete portion 51.
{0069}
Thereafter, while the poured concrete is curing, a step
of removing the scaffolding set around the platform 1 is
conducted (Step S7), and subsequently, the upper-surface
connecting part 7 is removed from the side walls 41 by
removing the anchor bolt 73. Thus, the platform 1 as shown in
Fig. 1 is completed.
{0070}
According to the configuration described above, a step of
forming the form 4 and a step of building a plurality of piers
2 can be conducted simultaneously, and at the same time, the
form 4 can be made at a different site from the construction
site of the plurality of piers 2, in other words, the
construction site of the platform 1. Therefore, a reduction
in the construction period, that is, the production period of
the platform 1, can be achieved.
Furthermore, because the form 4 is made of concrete, the

form 4 is not required to be removed after the concrete has
been poured into the form 4 to form the inner concrete portion
51, and therefore, the construction period can be reduced.
{0071}
In addition, when form made of steel plates is used, it
is necessary to perform welding management, and it is
necessary to make the form in a factory in order to ensure
dimensional precision. In contrast, when form made of
concrete is used, it is not necessary to perform welding
management etc. Therefore, the site for producing the form is
not limited to the factory; the form can be produced at a
suitable site close to the construction site, and it is
possible to reduce the costs related to transport of the form.
{0072}
On the other hand, because concrete is poured to form the
inner concrete portion 51 after the form 4 having the pair of
side walls 41 and the bottom slab 42 has been set on the
piers, a reduction in the size of a crane used for setting the
form can be afforded compared with a case where the form 4 is
set on the piers 2 after concrete has been poured to form the
inner concrete portion 51.
{0073}
By connecting each of the edge portions of the pair of
side walls 41 with the upper-surface connecting part 7, a part
of the cross-section of the form 4 forms a box-structure;

therefore, it is possible to prevent a reduction in the
sectional stiffness of the form 4 due to the widening of the
gap between the edge portions (upper edges) of the side walls
41. Therefore, deformation of the form 4 during pouring of
the concrete for the inner concrete portion 51 is prevented,
and no supports for supporting the form 4 need to be set.
{0074}
Because the embedded metal parts 6 are supported with the
slotted holes 71 of the upper-surface connecting part 7, it is
possible to align the embedded metal parts 6 easily and with
high precision without using a separate massive template and
temporary supporting members that temporarily support this
template from above. Furthermore, the construction period can
be reduced compared with a process where the embedded metal
parts 6 are arranged directly in the form 4 and their
arrangement positions are adjusted.
{0075}
In addition, as shown in Fig. 7, the upper-surface
connecting part 7 is composed of an elongated member, thereby
achieving weight saving. By doing so, the upper-surface
connecting part 7 can easily be attached to and detached from
the form 4. In addition, because the upper-surface connecting
part 7 is finely adjustable in two dimensions in the planar
direction of the region that will form the top surface of the
table-deck portion 3 after concrete has been poured, the

positions of the embedded metal parts 6 are two-dimensionally
adjustable in the horizontal plane by using this fine
adjustment.
{0076}
The process of constructing the table-deck portion 3
using the above-described form 4 can also be applied to the
construction of the piers 2, and it is not particularly
limited.
{Reference Signs List}
{0077}
1 platform (concrete platform)
2 pier
3 table-deck portion
4 form

6 embedded metal part (attachment part)
7 upper-surface connecting part (connecting member)

41 pair of side walls
42 bottom slab
51 inner concrete portion
61 nut (fixing member)
71 slotted hole (adjusting part)
75 slotted hole (adjusting part)
52 step (Step for forming form)
53 step (Step for setting form)
S6 step (Step for pouring concrete)

{CLAIMS}
{Claim 1}
A process for producing a concrete platform on which an
object to be supported is fixed, comprising:
a step of forming form having a pair of concrete side
walls and a concrete bottom slab that connects the pair of
side walls;
a step of setting the form on a plurality of piers; and
a step of pouring concrete into the form that is set on
the plurality of piers.
{Claim 2}
A process for producing a concrete platform according to
Claim 1 wherein, in the step of setting the form on the
plurality of piers,
the form is set on the plurality of piers after a
connecting member that connects each of the upper edge
»
portions of the pair of side walls of the form by being placed
on the upper edge portions is attached to the pair of side
walls.
{Claim 3}
A process for producing a concrete platform according to
Claim 2, wherein an attachment part that is partially embedded

in concrete that is poured into the form so as to fix the
object to be supported is aligned with the connecting member
in a positionable manner.
{Claim 4}
A process for producing a concrete platform according to
Claim 2 or Claim 3, wherein the connecting member is removed
from the upper edge portions of the pair of side walls after
the step of pouring concrete.
{Claim 5}
A concrete platform that is produced by the process for
producing a concrete platform according to any one of Claims 1
to 4.
{Claim 6}
A connecting member that is used in the process for
producing a concrete platform according to any one of Claims 2
to 4, comprising:
an elongated member that is formed to have substantially
the same length as the gap between the pair of side walls of
the form;
a fixing member that anchors the attachment part to the
elongated member; and
an adjusting part that enables the attachment part to

move along the top surface of the table-deck portion that is
formed by pouring concrete into the form.

A method for producing a concrete trestle on which a support target is fixed, comprises a step of forming a framework
which is made of concrete to have a pair of side walls and a bottom plate for connecting the pair of side walls (S2), a step of
setting the framework so as to cross over a plurality of columns (S3), and a step of casting concrete in the framework set on the
plurality of columns (S6).