JP7355892B2 - Floor construction method - Google Patents

Description

The present invention relates to a floor construction method for constructing a floor that can be used for a long period of time at a position higher than the base surface.

In a conventional floor construction method, as shown in Patent Document 1, a space surrounded by a side wall is filled with a filler material, and then a floor material is installed on top of the filler material.

Patent No. 2775693 (paragraph [0002], Figure 2)

In the conventional floor construction method described above, the floor material is installed after the filler is filled, so it takes time until the floor can be used.

The present invention has been made in view of the above circumstances, and aims to provide a floor construction method that allows the floor to be used from an early stage.

A first aspect of the invention made to achieve the above object is a floor construction method for constructing a floor at a higher position than a base surface, the method comprising: forming a support having a plurality of pillars on the base surface; death,
The floor construction method includes installing a flooring material on the support, filling a space between the base surface and the flooring material with a filler material, and integrating the filler material and the support material. .

A second aspect of the invention is the method for constructing a floor according to the first aspect , in which a side wall surrounding the support is formed and the space closed by the floor material and the side wall is filled with the filler.

A third aspect of the invention is the floor construction method according to the second aspect , in which the side wall is connected to the support column when forming the side wall.

In a fourth aspect of the invention , the base surface is a bottom surface of an underground space having an opening in the ground, and the flooring is installed on the support so as to close the opening, and the flooring and the The floor construction method according to the first aspect, wherein the space closed by the wall of an underground space is filled with the filler.

A fifth aspect of the invention is the method for constructing a floor according to any one of the first to fourth aspects, using a rigid polyurethane foam as the filler.

In a sixth aspect of the invention , when forming the support body, a horizontal member is horizontally spanned between the upper ends of the plurality of pillars, a joist is fixed to the horizontal member, and the joist is fixed to the horizontal member. , a structure having a main body having a gate-shaped cross section and a flange extending outward from a lower end of each leg of the main body, and the flooring material is fixed to the top of the main body. The floor construction method according to any one of the fifth aspects .

In a seventh aspect of the invention , the horizontal member has a circular cross section, and includes an annular fitting portion that fits into the horizontal member from the outside, and an overhang piece that projects outward from the fitting portion. When preparing a connecting fitting and fixing the joist material to the horizontal frame member, the fitting portion of the connecting fitting is fitted to the horizontal member from the outside, and the projecting piece of the connecting fitting and the This is the floor construction method according to the sixth aspect, in which the flange portions of the joists are overlapped and fixed.

[ First to fifth aspects of the invention]
According to the first aspect of the invention , the simple structure of installing the floor material on the support is constructed first, so the floor can be used from an early stage. By filling the space between the flooring and the base surface with the filler, the flooring can also be supported by the filler integrated with the support. This allows for long-term use of the floor.

Note that the construction of the floor may be performed as follows. That is, as in the second aspect of the invention , this may be done by forming a side wall surrounding the support and filling the space closed by the floor material and the side wall, or as in the fourth aspect of the invention. The base surface is the bottom of an underground space that has an opening in the ground, and the flooring is installed on a support to close the opening, and the space is closed by the flooring and the walls of the underground space. This may be done by filling the area with a filler. Examples of the former type of floor include platform floors and stage floors. An example of the latter type of floor is a floor formed in the opening of an underground passageway or basement.

When forming a side wall surrounding the support body, the side wall can be stably fixed by connecting the side wall to the support column ( third aspect of the invention ).

As the filler, rigid polyurethane foam may be used ( fifth aspect of the invention ), concrete, earth and sand, lightweight soil mixed with air bubbles, etc. may be used. The rigid polyurethane foam used as a filler includes a block made of pre-foamed rigid polyurethane foam, a pulverized product of pre-foamed rigid polyurethane foam, and a base material (liquid A) and curing agent (liquid B) used on-site. Examples include rigid polyurethane foam (rigid polyurethane foam formed by in-situ foaming) formed by reacting and spraying two liquid raw materials consisting of () and the like. If a rigid polyurethane foam foamed in-situ is used as the filler, it is possible to fill the narrow gap between the base surface and the flooring material without any gaps. Note that the filler may be configured by combining a block made of a rigid polyurethane foam that has been foamed in advance or a pulverized product thereof, and a rigid polyurethane foam that is foamed on-site.

[ Sixth aspect of the invention ]
According to the sixth aspect of the invention , since the floor joists have a structure having a main body portion having a gate-shaped cross section, the flooring material can be stably fixed to the top of the joists. Furthermore, since the joist has a structure with a flange extending from the lower end of each leg of the main body, the joist can be easily fixed to the horizontal member using the flange of the joist. can.

[ Seventh aspect of the invention ]
According to the seventh aspect of the invention , since the connecting fitting has a structure in which the projecting piece projects outward from the annular fitting portion, even if the horizontal member has a circular cross section, the horizontal member It becomes possible to fix the overhang piece and the joist material in a state where the fitting portion is fitted to the material.

A perspective view of a platform with a floor according to the first embodiment A-A sectional view of the platform BB sectional view of platform Side sectional view of connecting fittings (A) Perspective view of the panel material, (B) Enlarged view showing the end of the strip material (A) Perspective view of side wall fixing part, (B) Side sectional view Side sectional view to explain the floor construction process Side sectional view to explain the floor construction process A perspective view for explaining how the wall material fixing part is fixed to the wall material Schematic diagram to explain filling with filler material (A) Side sectional view of an underground filling body including a floor according to the second embodiment, (B) Enlarged side sectional view around the elevating part C-C sectional view of underground filling body Side sectional view to explain the floor construction process Schematic diagram to explain filling with filler material (A) Side sectional view, (B) Side view, (C) Perspective view of connecting fittings according to other embodiments

As shown in FIG. 1, the floor 10 of this embodiment is the floor of a platform 100 that serves as a place for passengers to get on and off trains, etc., and is constructed at a higher position than the ground G on which the tracks R are laid. ing. Specifically, as shown in FIG. 2, in the platform 100, the floor material 11 constituting the floor 10 is supported from below by a support 20 erected on the ground G. Note that in this embodiment, the ground G serves as a base surface that supports the support body 20.

The platform 100 also includes side walls 30 surrounding the support body 20 on all sides (front side, back side, left and right sides), and a filler 40 filled in the space closed by the floor material 11 and the side walls 30. It is being The floor material 11 is also supported from below by a filler 40 integrated with the support body 20. Note that the filler 40 is made of a rigid polyurethane foam formed on-site.

As shown in FIG. 2, the support body 20 includes a plurality of pillars 21 and a horizontal member 22 horizontally spanned between the plurality of pillars 21. The pillar 21 is formed by mounting a pillar body 21B on a jack 21A for adjusting the height of the pillar 21. The jack 21A is composed of, for example, a screw jack. The column main body 21B has a circular cross section and is made of, for example, a circular pipe. In addition, in the support body 20, a plurality of sets of supports 21, which are formed by arranging a predetermined number of supports 21 in the width direction of the platform 100, are arranged in the longitudinal direction of the platform 100.

There are two types of horizontal members 22: a first horizontal member 22A extending along the longitudinal direction of the platform 100 and a second horizontal member 22B extending along the width direction of the platform 100. The first horizontal member 22A and the second horizontal member 22B are each fixed to the column 21 with fixing fittings such as clamps. Both the first horizontal member 22A and the second horizontal member 22B have a circular cross section, and are made of, for example, a circular pipe.

As shown in FIG. 4, in the first horizontal member 22A, there is an upper end horizontal member 22J that spans between the upper ends of the plurality of columns 21. A joist 24 is fixed to this upper end horizontal member 22J via a connecting fitting 23.

The connecting fitting 23 includes a fitting portion 23A formed in an annular shape and a projecting piece 23B projecting outward in the radial direction from the fitting portion 23A. The inner diameter of the fitting portion 23A is approximately the same as the outer diameter of the upper end horizontal member 22J, and the fitting portion 23A is fitted into the upper end horizontal member 22J from the outside. The overhanging pieces 23B overhang from two places 180 degrees apart in the circumferential direction of the fitting portion 23A, and both of these two overhanging pieces 23B, 23B are arranged horizontally. Note that the fitting portion 23A is fixed to the upper end horizontal member 22J by screw fastening.

The joist 24 has a structure in which a flange portion 24F protrudes outward from the lower end of each of a pair of leg portions 24K, 24K of a main body portion 24H having a gate-shaped cross section. The flange portion 24F is fixed to overlap the projecting piece 23B of the connecting fitting 23. The floor material 11 is screwed onto the top portion 24T of the main body portion 24H. Note that the flange portion 24F and the overhanging piece 23B are fixed by screw fastening.

As shown in FIG. 1, the floor material 11 is formed by arranging a plurality of panel materials 12 in the longitudinal direction of the platform 100. As shown in FIG. 5, the panel material 12 is made up of a plurality of strips 13 connected in the width direction by a connecting member 14. Specifically, the connecting member 14 has an L-shaped cross section, and extends in the width direction of the band material 13 with one side of the L shape facing downward. The connecting member 14 is screwed to the plurality of strips 13 with the other side of the L-shape in the coupling member 14 facing the lower surface of the plurality of strips 13.

As shown in FIG. 5, the strip material 13 has a structure in which a pair of main walls 13A, 13A facing each other in the thickness direction are connected by a plurality of connecting walls 13B. Note that the connecting wall 13B extends along the longitudinal direction of the strip material 13.

As shown in FIG. 2, the side wall 30 is formed by arranging a plurality of vertically arranged wall materials 31 in the height direction and longitudinal direction of the platform 100. The wall material 31 has the same structure as the band material 13 described above, and consists of a pair of main walls 31A, 31A connected by a plurality of connecting walls 31B. The wall material 31 is arranged so that the width direction of the main wall 31A faces vertically.

Each wall material 31 of the side wall 30 is connected to the support column 21 of the support body 20 by a side wall connection portion 50. Thereby, the side wall 30 is stabilized. As shown in FIG. 6(A), the side wall connecting portion 50 is formed by connecting a column fixing portion 51 fixed to the column 21 and a wall material fixing portion 52 fixed to the wall material 31.

Specifically, the pillar fixing part 51 has a structure similar to that of the above-mentioned connecting fitting 23, and has an overhanging piece 51B projecting outward from a fitting part 51A that fits into the pillar 21 from the outside. Further, the wall material fixing portion 52 has a structure in which a screw shaft 52S stands up from a base plate 52P. Here, a slit 31S extending inward from the outer edge of the main wall 31A is formed in the main wall 31A of the wall material 31 facing the support body 20 side, and a base plate 52P of the wall material fixing portion 52 is attached to the wall material 31A. The screw shaft 52S is inserted into the slit 31S. The base plate 52P is fixed to the main wall 31A by screw fastening, and the screw shaft 52S is fixed to the overhang piece 51B by screw fastening.

Note that the spaces between the floor material 11 and the side wall 30, between the side wall 30 and the ground G, between the plurality of strip materials 13, between the plurality of wall materials 31, etc. are sealed with a sealant (not shown) such as packing. has been done.

The floor 10 of this embodiment is constructed as follows. First, as shown in FIG. 7A, the support 20 is erected on the ground G (support formation step), and the flooring 11 is installed on the support 20 (flooring installation step). ). Next, as shown in FIG. 7(B), a side wall 30 surrounding the support body 20 is formed (side wall forming step). When the side wall 30 is formed, as shown in FIG. 8(A), the space S1 closed by the floor material 11 and the side wall 30 is filled with a filler 40 (filling step). When the filler 40 is integrated with the support 20, the platform 100 is completed and the floor 10 supported from below by the support 20 and the filler 40 is completed, as shown in FIG. 8(B). .

Details of the support forming process are as follows. In the support formation step, first, a plurality of support columns 21 are erected on the ground G, and a horizontal member 22 is spanned between the plurality of support columns 21. The plurality of support columns 21 are arranged along the extending direction of the line R (see FIG. 1) and the direction orthogonal to the extending direction. The height of each support column 21 is adjusted by a jack 21A as necessary. In addition, prior to the work of erecting the columns 21, the columns 21 arranged in the row closest to the track R and the columns 21 arranged in the row furthest from the track R are provided with a column fixing part 51 (see FIG. 6(A)). is fixed.

The horizontal member 22 is fixed to the column 21 using fixing fittings (not shown) such as clamps that are fixed to the column 21 in advance. The horizontal members 22 arranged along the extending direction of the track R are the first horizontal members 22A, and the horizontal members 22 arranged along the direction orthogonal to the track R are the second horizontal members 22B. becomes. Further, among the horizontal members 22 serving as the first horizontal members 22A, the horizontal members 22 that span between the upper ends of the columns 21 serve as upper end horizontal members 22J. Here, a connecting metal fitting 23 (see FIG. 4) is fixed in advance to the horizontal member 22 that becomes the upper end horizontal member 22J, and the horizontal member 22 that becomes the upper end horizontal member 22J has the connecting metal fitting 23 fixed in advance. The overhang piece 23B is arranged horizontally.

When the upper end horizontal member 22J is spanned between the plurality of pillars 21, the joists 24 are fixed to the connecting fittings 23. Specifically, the flange portion 24F of the joist 24 is placed on the overhang piece 23B of the connecting fitting 23, and the flange portion 24F and the overhang piece 23B are screwed together. With the above steps, the support forming step is completed. As described above, in this embodiment, the connecting fitting 23 interposed between the upper end horizontal member 22J and the joist material 24 has a structure in which the overhanging piece 23B projects outward from the annular fitting portion 23A. Therefore, even if the horizontal member 22 has a circular cross section, the joist 24 can be fixed to the overhang piece 23B with the fitting portion 23A fitted to the horizontal member 22.

The details of the flooring installation process are as follows. In the floor material installation process, a plurality of panel materials 12 are arranged on the joist material 24 of the support body 20 and fixed to the joist material 24 (specifically, the top portion 24T of the joist material 24) with screws. Here, since the main body portion 24H of the joist 24 has a gate-shaped cross section, the flooring 11 can be stably fixed to the joist 24.

The plurality of panel members 12 are arranged in the extending direction of the line R. Each panel material 12 is arranged so that the connecting member 14 (see FIG. 5) faces downward and the width direction of the band material 13 is substantially parallel to the track R. Note that in order to reduce the time required for the flooring installation process, the plurality of panel materials 12 are prepared prior to the flooring installation process. The panel material 12 is formed by arranging a plurality of strip materials 13 in the width direction and connecting the plurality of strip materials 13 with a connecting member 14.

When the plurality of panel materials 12 are fixed to the joists 24, the flooring 11 constituting the floor 10 is installed on the support 20, and the flooring installation process is completed. Note that the floor 10 at the end of the floor material installation process is supported from below only by the supports 20, and the supports 20 have enough strength to withstand short-term use of the floor 10. Here, short-term use refers to use that is constructed for the purpose of remaining only for a specific period of time, and is dismantled after that period, and is used as a so-called temporary structure. Although the specific period depends on the purpose, use, frequency of maintenance, etc., it is generally about six months to one year. On the other hand, long-term use refers to use that is constructed for the purpose of continuous use without a set expiry date, and is used as a so-called permanent structure or permanent structure. be.

Details of the sidewall forming process are as follows. In the side wall forming step, a plurality of wall materials 31 are arranged to surround the support body 20 from all sides, and each wall material 31 is fixed to the support 21. The wall material 31 is arranged so that the main wall 31A in which the slit 31S is formed faces the support body 20 side, and the main wall 31A is vertical. Specifically, the plurality of wall materials 31 are arranged around the support body 20 and stacked one above the other. The gaps between the wall materials 31, the gaps between the wall materials 31 and the ground G, and the gaps between the wall materials 31 and the floor material 11 are sealed with a sealing material.

A wall material fixing section 52 is fixed to the wall material 31 in advance, and a screw shaft 52S of the wall material fixing section 52 is screwed to an overhang piece 51B of the column fixing section 51 fixed to the column 21. When the screw shaft 52S is screwed to the overhang piece 51B, the wall material 31 is fixed to the support column 21. When the plurality of wall materials 31 are fixed to the support columns 21, the side wall 30 is completed and the side wall forming process is completed. When the side wall forming step is completed, a space S1 closed by the floor material 11 and the side wall 30 is formed below the floor material 11. Note that the side wall 30 is provided with an entrance and exit of the space S1. The entrance/exit is arranged, for example, at one end of the side wall 30 in the extending direction of the line R.

Note that the wall material fixing portion 52 is fixed to the wall material 31 in the following manner. That is, as shown in FIG. 9, the base plate 52P of the wall material fixing part 52 is inserted between the pair of main walls 31A, 31A, and the screw shaft 52S is passed through the slit 31S. Then, the base plate 52P is fastened to the main wall 31A having the slit 31S.

Details of the filling process are as follows. In the filling process, a foaming stock solution of rigid polyurethane foam as the filler 40 is sprayed into the space S1. The filling material 40 is filled from the side far from the entrance/exit of the space S1 (for example, the other end in the extending direction of the line R) toward the side close to the entrance/exit. Then, when the entire space S1 is filled with the filler 40, the support body 20 is buried in the filler 40. With the above steps, the filling process is completed. Note that since the filler 40 is filled in the space S1 closed by the floor material 11 and the side wall 30, curing to prevent the filler 40 from scattering is not required. Furthermore, the step of flattening the upper surface of the filler 40 for installing the flooring 11 is not necessary. Moreover, since the filler 40 is made of hard polyurethane foam, the members (for example, the panel material 12 and the pillars 21) constituting the floor material 11, the support body 20, and the side wall 30 are prevented from rusting. In this embodiment, two liquids are discharged (stirred) at high pressure at the site: a main agent (liquid A) mainly composed of polyol, a crosslinking agent, a blowing agent, etc., and a curing agent (liquid B) mainly composed of isocyanate. By doing this, spraying is performed. Note that both A liquid and B liquid are liquid at room temperature.

Here, since heat generation occurs during the process of foaming and hardening of the foaming stock solution to form a rigid polyurethane foam, the foaming stock solution is sprayed in a predetermined amount at a time. Therefore, the filler 40 is formed in a layered manner from the end of the space S1 farthest from the entrance toward the entrance. Note that the foaming stock solution is preferentially sprayed onto the lower surface of the flooring 11 and the inner surface of the side wall 30. Specifically, the first layer 40K1 of the filler 40 that is formed first is formed in a shell shape that contacts the lower surface of the flooring material 11 and the inner surface of the side wall 30 (FIG. 10(A)), and The second layer 40K2 and third layer 40K3 of the filler 40 are formed in the shape of a vertical wall inside the first layer 40K1 (see FIG. 10(B)). Then, when the inner part of the first layer 40K1 is filled with the filler 40, a shell-like layer similar to the first layer 40K1 is formed from the side closer to the entrance and exit with respect to the filler 40, and the inside of the layer is A plurality of vertical wall-like layers are formed in the section.

When the filling process is completed and the filling material 40 is integrated with the support 20, the platform 100 (see FIG. 1) is completed, and the bed 10 shown in FIG. 2 is completed. Since the floor 10 is supported not only by the support body 20 but also by the filler 40, the floor 10 can be used for a long period of time (it becomes a permanently installed structure).

In the method for constructing the floor 10 of this embodiment, a floor material installation process is performed after the support formation process and before the sidewall formation process and the filling process. In the floor material installation process, the floor material 11 is installed on the support body 20, so that the floor 10 is simply formed, and the floor 10 can be used for a short period of time. Thereby, the floor 10 can be used early without waiting until the construction is completed. Furthermore, in the present embodiment, the flooring 11 is supported from below not only by the support body 20 but also by the filler 40 during the filling process, so that the flooring 10 can be used for a long time at the end of construction.

In addition, in this embodiment, since the filler 40 is formed by directly spraying rigid polyurethane foam formed on-site, in the space S1, gaps between each component of the support body 20 (for example, a horizontal The filler 40 is easily filled into the gaps between the flooring material 11 and the flooring material 22 or joist material 24, and the gap between the support column 21 and the side wall 30. As a result, the space S1 is filled with the filler 40 without any gaps, and the support of the flooring 11 is stabilized.

In addition, since the filler 40 is constructed by directly spraying rigid polyurethane foam foamed on-site, it is possible to fill the filler 40 from the lower surface of the flooring material 11 downward, leaving no voids in the filler 40. It is possible to suppress the occurrence of , and to fill the filling material 40 without any gaps. Therefore, the floor material 11, the support body 20, and the side wall 30 are integrated with the filler 40, and the floor material 11 is in a state where the floor material 11, the support body 20, and the side wall 30 are integrated with the filler material 40. It will be supported by Thereby, the platform 100 can be made into a strong permanent structure, and the floor 10 can be used for a long time. Furthermore, when the filler 40 is made of rigid polyurethane foam, the weight of the platform 100 itself can be reduced because the filler 40 is lightweight. This makes it possible to prevent the platform 100 from tilting or deforming due to ground subsidence or the like after construction.

In this embodiment, since the connecting fitting 23 and the column fixing part 51 have the same structure, the connecting fitting 23 and the column fixing part 51 can be made common. Furthermore, since the strip material 13 and the wall material 31 constituting the panel material 12 have the same structure, the strip material 13 and the wall material 31 can be used in common.

[Second embodiment]
As shown in FIG. 11(A), the floor 10V of this embodiment is formed by an underground filling body 200 that fills an underground passage 210. The underground passage 210 includes a plurality of openings 211A that open to the ground G at entrances and exits 211 provided at a plurality of points, an elevating section 230 that goes underground from the openings 211A, and an elevating section that extends substantially parallel to the ground G. A passage main body 220 that connects the passage bodies 230 with each other is provided. Note that in the example of FIG. 11(B), stairs 230K are formed in the elevating section 230, but a slope may also be formed.

The underground filling body 200 fills the entire underground passage 210 (that is, the entire elevating section 230 and the passage main body 220). The upper part of the underground filling body 200 closes the opening 211A, and the upper surface of the underground filling body 200 is flush with the ground G. The floor 10V is constituted by the portion of the underground filling body 200 exposed from the opening 211A.

As shown in FIG. 12, the underground filling body 200 is similar to the platform 100 of the first embodiment in that it includes a floor material 11, a support 20, and a filling material 40, and the platform 100 does not include a side wall 30. It is different from The structures of the floor material 11, support body 20, and filler material 40 in the underground filling body 200 are the same as those in the first embodiment, so the same reference numerals are used to omit the explanation.

The floor material 11 in the underground filling body 200 closes the opening 211A of the underground passage 210. Further, the support body 20 in the underground filling body 200 is erected on the underground floor surface BF of the underground passage 210. The underground floor surface BF is composed of the floor surface BF1 of the passage main body 220 and the floor surface BF2 of the elevating section 230, and serves as a base surface that supports the support body 20. In the example shown in FIG. 11(B), the support body 20 is erected only on the floor surface BF2 of the elevating section 230, and the support column 21 is on the tread surface (i.e., the surface facing upward) of the staircase 230K. erected on top.

The method for constructing the floor 10V of this embodiment is similar to the method for constructing the floor 10 of the first embodiment in that it includes a support forming step, a floor material installation step, and a filling step, but does not include a side wall forming step. The construction method for floor 10 is different. Below, the support formation process, flooring installation process, and filling process in the construction method for the floor 10V are different from the support formation process, flooring installation process, and filling process in the construction method for the floor 10 of the first embodiment. I will mainly explain the parts.

In the support formation step, a plurality of columns 21 are erected on the underground floor surface BF of the underground passage 210 (floor surface BF2 of the elevating section 230) (see FIG. 13(A)). In this embodiment, the plurality of supports 21 are erected on the treads of the stairs 230K. Note that the upper ends of the plurality of pillars 21 are made to have the same height and are arranged slightly below the opening 211A of the underground passage 210.

In the floor material installation process, a plurality of panel materials 12 are arranged so as to close a plurality of openings 211A of the underground passage 210. The flooring 11 that closes the opening 211A is formed of a plurality of panel materials 12, and includes the flooring 11 and the walls of the underground passage 210 (specifically, the floor wall 212, side wall 213, and ceiling wall 221 of the underground passage 210). ), a closed space S2 is formed. At this time, an entrance (not shown) for an operator to enter and exit in the filling process is formed in the floor material 11 that closes the specific opening 211A. Note that when the floor material installation process is completed, the floor 10V supported only by the supports 20 is simply formed.

In the filling step, the space S2 is filled with a rigid polyurethane foam foamed in place as the filler 40 from an opening 211A different from the specific opening 211A toward the specific opening 211A. The filler 40 is formed in layers in multiple steps. Specifically, the first layer 40L1 of the filler 40 that is formed first is formed horizontally so as to cover the entire lower surface of the flooring 11 that closes an opening 211A different from the specific opening 211A (see FIG. 14(A)), the second layer 40L2, third layer 40L3, and fourth layer 40L4 of the filler 40 formed after the second layer are formed in the shape of a vertical wall below the first layer 40L1 (see FIG. 14(B)). When the lower part of the first layer 40L1 is filled with the filler 40, a vertical wall-like layer similar to the second layer 40L2 is formed from the side closer to the specific opening 211A with respect to the filler 40. Ru.

Also according to the construction method of the floor 10V of this embodiment, the flooring 11 forming the floor 10V is supported only by the supports 20 at the end of the flooring installation process, so the floor 10V can be installed at an early stage without waiting until the completion of construction. It becomes possible to use it. Further, in the filling process, the flooring 11 is supported from below not only by the support body 20 but also by the filler 40, so that the floor 10V can be used for a long time at the end of construction. Further, the method for constructing the floor 10V of this embodiment does not include a side wall forming step, so that the construction period can be shortened.

[Other embodiments]
(1) The filler 40 may be made of concrete, earth and sand, or lightweight soil mixed with air bubbles. In this case, in the filling process, filler 40 made of concrete or earth and sand is deposited upward.

Further, the filler 40 may be constructed by combining a block made of a rigid polyurethane foam that has been foamed in advance or a pulverized product thereof with a rigid polyurethane foam that is foamed on-site. At this time, in the filling process, a plurality of blocks made of rigid polyurethane foam and their crushed products are placed in the spaces S1 and S2, and hard polyurethane foam is filled in the gaps between the blocks and their crushed products and the flooring 11 and side walls 30. Foam foaming solution is sprayed. Here, rigid polyurethane foam produced by on-site foaming reaches high temperatures due to an exothermic reaction, so by using a pre-foamed block or its crushed material, it is possible to suppress the amount of heat generated by the rigid polyurethane foam during the filling process. It becomes possible.

(2) In the first embodiment, the floor 10 formed at a position higher than the ground G is the floor of the platform 100, but any floor formed at a position higher than the ground G may be used, for example, a stage It may be the floor of

(3) In the first embodiment, an existing side wall erected on the ground G (for example, a side wall of an outdoor pool or a fence constructed at a higher position than the ground G) is used as the side wall 30. Good too. If existing side walls surrounding the support body 20 from all sides are used as the side walls 30, a side wall forming step is not necessary. Note that an existing side wall may be used as a part of the side wall 30. Even in this case, the construction period of the side wall forming step can be shortened.

(4) In the second embodiment, the underground passage 210 is shown as an example of what is to be filled with the underground filling body 200, but it may be any underground space, such as a basement, an underground warehouse, an underground pit, etc. Good too.

(5) In the above embodiment, the overhanging piece 23B of the connecting fitting 23 overhangs from two places of the fitting part 23A, but as shown in FIG. 15(A), the overhanging piece 23B of the connecting fitting 23 23B may protrude from only one location of the fitting portion 23A.

(6) In the above embodiment, the joists 24 are connected to the upper end horizontal member 22J through the connecting fittings 23, but as shown in FIG. 15(B), instead of the connecting fittings 23, , U-shaped bolts may be used. At this time, the upper end horizontal member 22J is arranged inside the U-shaped bolt, and both ends of the U-shaped bolt are screwed to each of the pair of flanges of the joist 24. In addition, as shown in FIG. 15(C), the joist material 24 may be connected to the upper end horizontal member 22J extending in the width direction of the platform 100 via a U-shaped bolt. At this time, the U-shaped bolt is screwed to the flange portion 24F of the joist material 24. Note that the flange portion 24F of the joist 24 may be directly screwed to the upper end horizontal member 22J extending in the width direction of the platform 100. In this way, the joist 24 can be easily fixed to the upper end horizontal member 22J by using the flange portion 24F of the joist 24.

(7) In the above embodiment, the first horizontal member 22A and the second horizontal member 22B were formed to have a circular cross section, but the first horizontal member 22A and the second horizontal member 22B were formed to have a rectangular cross section. For example, it may be made of a square pipe. In this case, the flange portion 24F of the joist 24 can be directly fixed to the upper end horizontal member 22J without using the connecting fitting 23. Alternatively, the support body 20 may not include the joist material 24, and the floor material 11 may be directly screwed to the upper end horizontal member 22J.

10,10V floor 11 floor material 20 support 30 side wall 40 filler 100 platform 200 underground filler 210 underground passage

Claims (3)

A floor construction method in which the floor is constructed at a higher position than the base surface,
forming a support having a plurality of pillars on the base surface;
installing a flooring material on the support;
A side wall facing the support and not connected to the base surface without the support is fixed by being connected to the support,
A method for constructing a floor, which comprises filling a space between the base surface and the floor material with a filler material to integrate the filler material and the support body. A floor construction method in which the floor is constructed at a higher position than the base surface,
forming a support having a plurality of pillars on the base surface;
installing a flooring material on the support;
After providing the rigid polyurethane foam as a filler on the lower surface of the flooring material, the rigid polyurethane foam as the filler material is also provided in the lower region, and the space between the base surface and the flooring material is filled with the rigid polyurethane foam. A method for constructing a floor, which comprises filling a filler and integrating the filler and the support. A floor structure constructed at a higher position than the base surface,
a support formed on the base surface and having a plurality of pillars;
a flooring installed on the support;
a side wall connected to the pillar, facing the support, and not connected to the base surface without the support;
A floor structure comprising: a filler filled between the base surface and the floor material and integrated with the support.

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