Method for constructing concrete floor material

Abstract

To provide a method for constructing a concrete floor material, which can increase the degree of freedom in construction.SOLUTION: The method for constructing a concrete floor material 10 is a method for constructing the concrete floor material 10 that is installed below the upper ends of a pair of beams 20, and includes a first installation step of placing a support 70 between the pair of beams 20 and connecting each of the pair of beams 20 to the support 70 via a first connecting member 40, a second installation step of installing a finishing material 30 on the support 70, and a formation step of forming the concrete floor material 10 by pouring concrete on the top surface of the finishing material 30 after the first and second installation steps.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a method for installing concrete flooring. [Background technology]

[0002] One technique that has been proposed for constructing concrete flooring is to install a pair of main beams, then span a secondary beam between the pair of main beams, then install floor formwork and floor reinforcing bars on the secondary beams, and then pour concrete into the floor formwork (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-207800 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, there has been a growing need to install concrete flooring below the top ends of beams. However, since the above-mentioned conventional techniques are difficult to apply when installing concrete flooring below the top ends of beams, it is envisioned that the concrete flooring may be installed using another flooring material installed below the concrete flooring. However, in this case, the timing of installation of the concrete flooring material depends on the timing of installation of the other flooring material, which may reduce the flexibility of the installation. Therefore, there is room for improvement in terms of increasing the flexibility of the installation of concrete flooring materials.

[0005] The present invention has been made in view of the above, and aims to provide a method for constructing concrete flooring that allows for greater freedom in construction. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the objective, the concrete floor construction method described in claim 1 is a construction method for constructing a concrete floor that is installed below the upper ends of a pair of beams, and includes a first installation step of placing shoring between the pair of beams and connecting each of the pair of beams to the shoring via a first connecting member, a second installation step of installing a finishing material on the shoring, and a formation step of forming the floor by pouring concrete on the upper surface of the finishing material after the first installation step and the second installation step.

[0007] The method for constructing concrete flooring materials described in claim 2 is the method for constructing concrete flooring materials described in claim 1, wherein the first connecting member comprises a connecting piece connected to the beam material and a bolt member connecting the connecting piece to the support.

[0008] The method for constructing concrete flooring materials described in claim 3 is the method for constructing concrete flooring materials described in claim 1 or 2, in which, in the forming process, a second connecting member is provided to connect the finishing material and the flooring material.

[0009] The method for constructing concrete flooring materials described in claim 4 is the method for constructing concrete flooring materials described in claim 1 or 2, in which, in the second installation step, a damage prevention material is provided between the finishing material and the support structure to prevent damage to the finishing material.

[0010] A method for constructing a concrete floor material according to claim 5 is the method for constructing a concrete floor material according to claim 1 or 2, wherein in the forming step, a slag stopper material is provided on the upper surface of the finishing material. [Effects of the Invention]

[0011] According to the concrete floor construction method of claim 1, the method includes a first installation step of placing shoring between a pair of beams and connecting each of the pair of beams to the shoring via a first connecting member, a second installation step of attaching a finishing material to the shoring, and a forming step of forming a floor by pouring concrete on top of the finishing material after the first and second installation steps. This allows the concrete floor to be constructed even if a concrete floor located below it has not been installed, thereby increasing the flexibility of the construction. Furthermore, compared to installing the finishing material after the construction of the concrete floor, the effort required to install the finishing material can be reduced, improving the workability of the installation.

[0012] According to the method for constructing concrete flooring described in claim 2, the first connecting member comprises a connecting piece and a bolt member, so that the first connecting member can be constructed simply and inexpensively, thereby improving the manufacturability of the first connecting member.

[0013] According to the method for constructing a concrete floor material set forth in claim 3, the second connecting member is provided in the forming step, which makes it possible to prevent the finishing material from falling off and improves the ease of installation of the finishing material.

[0014] According to the method for constructing concrete flooring materials described in claim 4, in the second installation step, a damage prevention material is placed between the finishing material and the support, thereby preventing damage to the finishing material and preventing deterioration of the appearance of the finishing material.

[0015] According to the method for constructing concrete flooring materials described in claim 5, a slag-stopping material is provided on the upper surface of the finishing material during the forming process, thereby preventing the mortar water from leaking from the concrete during the forming process and improving the workability of the concrete flooring materials. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a diagram showing a concrete floor material constructed using a concrete floor material construction method according to an embodiment of the present invention. [Figure 2] 1A and 1B are diagrams showing a first installation step and a second installation step of a concrete flooring construction method. [Figure 3] 1A to 1C are diagrams showing the forming steps of a concrete floor construction method. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, with reference to the accompanying drawings, an embodiment of the method for constructing concrete flooring according to the present invention will be described in detail. First, [I] the basic concept of the embodiment will be explained, then [II] specific details of the embodiment will be explained, and finally, [III] modifications to the embodiment will be explained. However, the present invention is not limited to the embodiment.

[0018] [I] Basic Concept of the Embodiment First, the basic concept of the embodiment will be described. The embodiment generally relates to a construction method for constructing a concrete floor material that is provided below the upper ends of a pair of beams.

[0019] Here, the specific structure and type of the "building" having a pair of beams and concrete flooring is arbitrary, and the concept includes, for example, factory facilities, logistics facilities, commercial facilities, apartment complexes such as apartments and condominiums, office buildings, etc., but in the embodiment, it will be described as an office building with multiple floors.

[0020] In the following embodiment, a construction method for constructing a concrete floor material on the third floor of an office building will be described.

[0021] [II] Specific details of the embodiment Next, specific details of the embodiment will be described.

[0022] (composition) First, the configuration of a building 1 to which a construction method according to an embodiment of the present invention is applied will be described.

[0023] In the following explanation, the X direction in FIG. 1 will be referred to as the left-right direction of building 1 (the -X direction will be the left direction of building 1, and the +X direction will be the right direction of building 1), the Y direction in FIG. 1 will be referred to as the up-down direction of building 1 (the +Y direction will be the up direction of building 1, and the -Y direction will be the down direction of building 1), and the direction perpendicular to the X and Y directions will be referred to as the front-to-back direction (the direction leading to the front side of the paper in FIG. 1 will be the front direction of building 1, and the direction leading to the back side of the paper in FIG. 1 will be the rear direction of building 1).

[0024] The building 1 is located within a specified site and is configured to have multiple stories 2. Of the multiple stories, one story 2 (in the embodiment, the third story will be described; hereinafter, referred to as "target story 2") to which the construction method according to the embodiment is applied is configured to have concrete flooring 10 (hereinafter referred to as "concrete flooring 10"), beams 20, finishing materials 30, first connecting members 40, second connecting members 50, and sludge stoppers 60, as shown in FIG.

[0025] (Composition: Concrete flooring) The concrete floor material 10 is a member for separating the target story 2 from an adjacent story (specifically, a story below the target story 2 (specifically, the second floor)). The concrete floor material 10 is made of, for example, a known concrete floor material (one example is a reinforced concrete floor material), and is installed approximately horizontally at the boundary between the target story 2 and the adjacent story.

[0026] Specifically, as shown in FIG. 1, the concrete floor material 10 is provided below the upper ends of the beams 20.

[0027] (Composition - Beams) The beam 20 supports the concrete floor material 10. The beam 20 is constructed using, for example, a known steel beam (specifically, an H-shaped steel beam) and, as shown in Figure 1, has an upper flange portion 21, a lower flange portion 22, and a web portion 23 located between the upper flange portion 21 and the lower flange portion 22.

[0028] As shown in Figure 1, multiple beams 20 are arranged side by side horizontally at intervals on the target floor 2, and the lower flange portions 22 and the lower portions of the web portions 23 of the beams 20 are connected to the concrete floor material 10.

[0029] (Composition - Finishing materials) The finishing material 30 is used to cover the surface of the concrete floor material 10. This finishing material 30 is made of, for example, a known finishing material (one example is a CLT (Cross Laminated Timber) board) and is provided on the underside of the concrete floor material 10 as shown in Figure 1.

[0030] (Configuration - First connecting member) The first connecting member 40 is a connecting member for connecting the beam 20 to a support 70 described below, and includes a connecting piece 41 and a bolt member 42 as shown in FIG.

[0031] (Configuration - First connecting member - Connecting piece) The connection piece 41 is part of the basic structure of the first connection member 40, and is connected to the beam 20. This connection piece 41 is made of, for example, a known steel plate material (one example is a steel angle bar), and as shown in Fig. 1, is provided so as to abut against the lower flange portion 22 of the beam 20, and is connected to the lower flange portion 22 by welding or a fastener, etc.

[0032] In this embodiment, the connection piece 41 is embedded in the concrete floor material 10 in a forming process described later.

[0033] (Configuration - First connecting member - Bolt member) The bolt member 42 is another part of the basic structure of the first connecting member 40, and is used to connect the connecting piece 41 to the support structure 70 described below.As shown in Figures 1 and 2, the bolt member 42 includes a first bolt member 43, a second bolt member 44, and a bolt connection portion 45.

[0034] (Configuration - First connecting member - Bolt member - First bolt member) 1, the first bolt member 43 is connected to the connecting piece 41. This first bolt member 43 is configured using, for example, a known headed bolt member, and as shown in Fig. 1, the longitudinal direction of the first bolt member 43 is arranged along the vertical direction, and the threaded portion of the first bolt member 43 is arranged to be inserted into a mounting hole (not shown) provided in the connecting piece 41.

[0035] In this embodiment, the first bolt member 43 is embedded in the concrete floor material 10 in a forming process described later.

[0036] (Configuration - first connecting member - bolt member - second bolt member) The second bolt member 44 is connected to the support structure 70, which will be described later. The second bolt member 44 is configured using, for example, a known headed bolt member, and as shown in Fig. 2, is provided below the first bolt member 43 with the longitudinal direction of the second bolt member 44 aligned along the vertical direction, and the threaded portion of the second bolt member 44 is provided so as to be inserted into a mounting hole (not shown) provided in the support structure 70, which will be described later.

[0037] In this embodiment, the second bolt member 44 is not shown in FIG. 1 because it is removed in a removal step described later.

[0038] (Configuration - first connecting member - bolt member - bolt connection portion) The bolt connection portion 45 is for connecting the first bolt member 43 and the second bolt member 44. This bolt connection portion 45 is configured using, for example, a known nut member, and is disposed between the first bolt member 43 and the second bolt member 44 as shown in Figures 1 and 2, and is connected by being screwed into the threaded portion of the first bolt member 43 and the threaded portion of the second bolt member 44.

[0039] In this embodiment, the bolt connection portion 45 is embedded in the concrete floor material 10 in the forming process described below.

[0040] Such a first connecting member 40 can be configured simply and inexpensively, and the manufacturability of the first connecting member 40 can be improved.

[0041] Furthermore, since the first bolt member 43 and the second bolt member 44 are connected via the bolt connection portion 45, the second bolt member 44 can be removed together with the support structure 70 after the formation process described below, making it easier to maintain the appearance of the area around the concrete floor material 10.

[0042] (Configuration - Second connecting member) Returning to Figure 1, the second connecting member 50 is used to connect the finishing material 30 and the concrete floor material 10. This second connecting member 50 is constructed using, for example, a known connecting member (one example is a fall prevention metal fitting, etc.), and as shown in Figure 1, a plurality of second connecting members 50 are arranged side by side at intervals between the finishing material 30 and the concrete floor material 10, and are connected to each of the finishing material 30 and the concrete floor material 10 via the second connecting member 50.

[0043] Such a second connecting member 50 can prevent the finishing material 30 from falling off, and can improve the ease of installation of the finishing material 30.

[0044] (Composition: Slag prevention material) The slag stopper 60 is used to prevent the leakage of concrete mortar water during the construction of the concrete flooring material 10. This slag stopper 60 is made of, for example, a known slag stopper (for example, a combination of a waterproof sheet and a sealant), and is provided to cover the top surface of the finishing material 30, as shown in Figure 1.

[0045] Such a slag stopper 60 can prevent the mortar water from leaking from the concrete during the forming process described below, thereby improving the workability of the concrete floor material 10.

[0046] (Construction method) Next, a method for constructing the concrete floor material 10 will be described.

[0047] This construction method is a method for constructing a concrete floor material 10 that is installed below the upper ends of a pair of beams 20, and includes a first installation step, a second installation step, a forming step, and a removal step.

[0048] The construction method will be described in the following embodiments on the assumption that it is performed as follows.

[0049] That is, the construction of the concrete floor material 10 to be installed between a pair of beams 20a (hereinafter referred to as "target beams 20a") shown in Figures 1 to 3 out of the multiple beams 20 will be described. It is also assumed that the pair of target beams 20a have already been installed on the target story 2. It is also assumed that the concrete floor material 10 has not been installed on the second floor adjacent to the target story 2.

[0050] (Construction method - 1st installation process) First, the first installation step will be described.

[0051] The first installation process is a process of placing a support structure 70 (for example, a well-known horizontal support structure or support beam material such as a Holly beam or Peco beam) between a pair of target beam materials 20a, and connecting each of the pair of target beam materials 20a to the support structure 70 via a first connecting member 40.

[0052] Specifically, as shown in FIG. 2, first, using a known method, the connection pieces 41 of the first connection members 40 are connected to the lower flange portions 22 of the target beam members 20a by welding or fasteners or the like.

[0053] Next, using a known heavy construction machine (for example, a crane, etc.) not shown, a support 70 is placed between the pair of target beams 20a.

[0054] Next, the threaded portions of the first bolt member 43 of the first connecting member 40 are inserted into the mounting holes of each connecting piece 41, and the threaded portions of the second bolt member 44 of the first connecting member 40 are inserted into the mounting holes provided at each of the left and right ends of the support structure 70.

[0055] Then, the threaded portions of the corresponding first bolt members 43 and second bolt members 44 are screwed into the bolt connection portions 45 of the first connecting member 40, respectively, thereby connecting each of the pair of target beam members 20a to the support structure 70.

[0056] (Construction method - 2nd installation process) Next, the second installation step will be described.

[0057] The second installation process is a process of installing the finishing material 30 on the support 70.

[0058] Specifically, as shown in Figure 2, first, before each of the pair of target beams 20a is connected to the shoring 70 via the first connecting member 40 in the first installation step (specifically, after the shoring 70 is placed between the pair of target beams 20a, and before each of the pair of target beams 20a is connected to the shoring 70), using known construction machinery, multiple bases 80 (e.g., butt corners, etc.) are arranged side by side at intervals on the top surface of the shoring 70, and then damage prevention materials 90 are placed on the top surface of the bases 80 (i.e., between the finishing material 30 and the shoring 70).

[0059] Then, the finishing material 30 is placed on the top surface of the damage prevention material 90, thereby attaching the finishing material 30 to the support 70.

[0060] Thereafter, as described above, in the first installation step, each of the pair of target beams 20a is connected to the support 70 via the first connecting member 40.

[0061] In this case, by providing a through hole (not shown) in the part corresponding to the first connecting member 40 in each of the finishing material 30 and the damage prevention material 90, it is possible to connect each of the pair of target beam materials 20a to the support structure 70 via the first connecting member 40.

[0062] The damage suppression material 90 is intended to suppress damage to the finishing material 30. The damage suppression material 90 is made of, for example, a known, substantially plate-shaped damage suppression material (for example, a wooden board such as plywood), and is provided so as to cover substantially the entire underside of the finishing material 30.

[0063] By providing such damage prevention material 90, damage to the finishing material 30 can be prevented, and deterioration of the appearance of the finishing material 30 can be prevented.

[0064] (Construction method - forming process) Next, the forming process will be described.

[0065] The forming step is a step of forming the concrete floor material 10 by pouring concrete onto the top surface of the finishing material 30 after the first and second installation steps.

[0066] Specifically, first, the slag stopper 60 and the second connecting member 50 are provided on the upper surface of the finishing material 30 , and then the finishing material 30 and the slag stopper 60 are connected via the second connecting member 50 .

[0067] This second connecting member 50 can prevent the finishing material 30 from falling during the forming process, and can improve the ease of installation of the finishing material 30.

[0068] Next, using known construction machinery, floor steel bars (not shown) are placed on the top surface of the slag retaining material 60, and then floor formwork (not shown) is placed on the top surface of the slag retaining material 60.

[0069] Next, concrete is poured into each of the flooring forms using a known concrete pouring method.

[0070] In this case, since the slag stopper 60 is provided, it is possible to prevent the mortar water from leaking from the concrete during the forming process, thereby improving the workability of the concrete floor material 10.

[0071] Then, the poured concrete is cured for a predetermined period of time to harden, and then the flooring formwork is removed, thereby forming the concrete flooring 10 shown in FIG.

[0072] (Construction method - removal process) Next, the removal process will be described.

[0073] The removal process is a process of removing the support structure 70 and the like.

[0074] Specifically, first, while supporting the shoring 70 using known construction machinery, the second bolt members 44 of each first connecting member 40 connected to the shoring 70 are removed from the bolt connection portion 45, thereby disconnecting the shoring 70 from the concrete floor material 10.

[0075] Then, the support 70 is lowered to the ground surface using known construction machinery, and the support 70 is removed.

[0076] In addition, by lowering the support structure 70, the base 80 and damage prevention material 90 located on the top surface of the support structure 70 can also be lowered to the ground surface, and the base 80 and damage prevention material 90 can be removed at the same time.

[0077] As a result, the state of the area around the concrete floor material 10 after the removal process can be as shown in FIG.

[0078] The above construction method allows the concrete floor material 10 to be constructed even if a concrete floor material 10 located below the concrete floor material 10 (specifically, a concrete floor material 10 to be installed on the second floor) has not been installed, thereby increasing the degree of freedom in construction. Furthermore, compared to installing the finishing material 30 after the concrete floor material 10 has been installed, the effort required to install the finishing material 30 can be reduced, improving the workability of the installation.

[0079] (Effects of the embodiment) Thus, according to the embodiment, the construction includes a first installation step of placing shoring 70 between a pair of beams 20 and connecting each of the pair of beams 20 to the shoring 70 via the first connecting members 40, a second installation step of attaching finishing materials 30 to the shoring 70, and a forming step of forming the concrete flooring 10 by pouring concrete on top of the finishing materials 30 after the first and second installation steps. Therefore, the concrete flooring 10 can be constructed even if a concrete flooring 10 positioned below the concrete flooring 10 has not been installed, thereby increasing the flexibility of the construction. Furthermore, compared to installing the finishing materials 30 after the construction of the concrete flooring 10, the effort required to install the finishing materials 30 can be reduced, improving the workability of the installation.

[0080] Furthermore, since the first connecting member 40 includes the connecting piece 41 and the bolt member 42, the first connecting member 40 can be constructed simply and inexpensively, and the manufacturability of the first connecting member 40 can be improved.

[0081] Furthermore, since the second connecting member 50 is provided in the forming process, the finishing material 30 can be prevented from falling off, and the installation of the finishing material 30 can be improved.

[0082] In addition, in the second installation process, damage prevention material 90 is provided between the finishing material 30 and the support 70, thereby preventing damage to the finishing material 30 and preventing deterioration of the appearance of the finishing material 30.

[0083] In addition, during the forming process, a slag stopper 60 is provided on the upper surface of the finishing material 30, which prevents the concrete mortar water from leaking during the forming process, thereby improving the workability of the concrete floor material 10.

[0084] [III] Modifications to the embodiment Although the embodiments of the present invention have been described above, the specific configurations and means of the present invention can be modified and improved as desired within the scope of the technical ideas of the inventions set forth in the claims. Such modifications will be described below.

[0085] (About the problem to be solved and the effects of the invention) First, the problems to be solved by the invention and the effects of the invention are not limited to those described above, and the present invention may solve problems not described above or achieve effects not described above. Also, the present invention may solve only some of the problems described or achieve only some of the effects described.

[0086] (shape, numbers, structure, time series) The components illustrated in the embodiments and drawings may be modified and improved as desired within the scope of the technical concept of the present invention in terms of shape, numerical value, or the structure or chronological relationship of multiple components.

[0087] (About beams) In the above embodiment, the beam 20 is described as a steel beam, but is not limited to this and may be, for example, a concrete beam (for example, a beam made of reinforced concrete or reinforced concrete).

[0088] (Regarding the first connecting member) In the above embodiment, the bolt member 42 of the first connecting member 40 has been described as including the first bolt member 43, the second bolt member 44, and the bolt connection portion 45, but this is not limiting. For example, the bolt member 42 of the first connecting member 40 may include a headed bolt member that can be inserted into the mounting holes of the connection piece 41 and the mounting holes of the support 70, and a nut portion that can be screwed onto the threaded portion of the bolt member.

[0089] In this case, for example, after the forming process, the portion of the first connecting member 40 that is not embedded in the concrete floor material 10 may be cut with a known cutting tool and then removed.

[0090] In the above embodiment, the first connecting member 40 is described as including the connecting piece 41 and the bolt member 42, but is not limited to this. For example, the first connecting member 40 may be formed of a known steel angle bar.

[0091] In this case, for example, after the forming process, the portion of the first connecting member 40 that is not embedded in the concrete floor material 10 may be cut with a known cutting tool and then removed.

[0092] (About the construction method) In the above embodiment, it was explained that in the second installation process, damage prevention material 90 is provided between the finishing material 30 and the support 70, but this is not limited to this, and for example, the provision of damage prevention material 90 may be omitted.

[0093] Furthermore, in the above embodiment, it has been explained that the second installation process is performed before each of the pair of target beam materials 20a is connected to the support structure 70 via the first connecting member 40 in the first installation process, but this is not limited to this, and for example, the second installation process may be performed before the support structure 70 is placed between the pair of target beam materials 20a in the first installation process.

[0094] In the above embodiment, the slag stopper 60 is provided on the upper surface of the finishing material 30 during the forming process, but this is not limiting. For example, if leakage of mortar water from the concrete during the forming process can be prevented, the provision of the slag stopper 60 may be omitted.

[0095] (Addendum) The concrete floor construction method of Appendix 1 is a construction method for constructing a concrete floor that is installed below the upper ends of a pair of beams, and includes a first installation step of placing shoring between the pair of beams and connecting each of the pair of beams to the shoring via a first connecting member, a second installation step of installing a finishing material on the shoring, and a formation step of forming the floor by pouring concrete on the upper surface of the finishing material after the first and second installation steps.

[0096] The concrete floor construction method of Appendix 2 is the concrete floor construction method described in Appendix 1, wherein the first connecting member comprises a connecting piece connected to the beam material and a bolt member connecting the connecting piece to the support.

[0097] The method for constructing concrete flooring in Appendix 3 is the method for constructing concrete flooring described in Appendix 1 or 2, wherein in the forming step, a second connecting member is provided to connect the finishing material and the flooring.

[0098] The concrete floor construction method of Appendix 4 is the method of constructing concrete floors described in Appendix 1 or 2, wherein in the second installation step, a damage suppression material is provided between the finishing material and the support structure to suppress damage to the finishing material.

[0099] The method for constructing a concrete floor material according to Supplementary Note 5 is the method for constructing a concrete floor material according to Supplementary Note 1 or 2, wherein in the forming step, a slag stopper material is provided on the upper surface of the finishing material.

[0100] (Effect of supplementary notes) The concrete floor construction method described in Appendix 1 includes a first installation step of placing shoring between a pair of beams and connecting each of the pair of beams to the shoring via a first connecting member, a second installation step of attaching a finishing material to the shoring, and a forming step of forming a floor by pouring concrete on top of the finishing material after the first and second installation steps.This allows the concrete floor to be constructed even if a concrete floor located below it has not been installed, thereby increasing the flexibility of the construction.In addition, compared to installing the finishing material after the construction of the concrete floor, the effort required to install the finishing material can be reduced, improving the workability of the installation.

[0101] According to the method for constructing concrete flooring materials described in Appendix 2, the first connecting member comprises a connecting piece and a bolt member, so that the first connecting member can be constructed simply and inexpensively, and the manufacturability of the first connecting member can be improved.

[0102] According to the method for constructing concrete flooring materials described in Appendix 3, the second connecting member is provided in the forming process, which prevents the finishing material from falling off and improves the ease of installation of the finishing material.

[0103] According to the method for constructing concrete flooring materials described in Appendix 4, in the second installation step, a damage prevention material is placed between the finishing material and the support, thereby preventing damage to the finishing material and preventing deterioration of the appearance of the finishing material.

[0104] According to the method for constructing concrete flooring materials described in Appendix 5, a slag-stopping material is placed on the top surface of the finishing material during the forming process, which prevents the mortar water from leaking from the concrete during the forming process and improves the workability of the concrete flooring materials. [Explanation of symbols]

[0105] 1. Building 2 Target hierarchy 10 Concrete flooring 20 Beam material 20a Target beam material 21 Upper flange 22 Lower flange 23 Web Department 30 Finishing Materials 40 first connecting member 41 Connection piece 42 Bolt material 43 First bolt member 44 Second bolt member 45 volt connection 50 second connecting member 60 Slag stopper 70 Shoring 80 Rootstock 90 Damage control material

Claims

1. A construction method for constructing a concrete floor material that is installed below the upper ends of a pair of beams, a first installation step of placing a support between the pair of beams and connecting each of the pair of beams to the support via a first connecting member; a second installation step of installing a finishing material on the support; After the first installation step and the second installation step, a forming step of forming the floor material by pouring concrete on an upper surface of the finishing material; A method for installing concrete flooring, including:

2. The first connecting member is A connection piece connected to the beam material; A bolt member that connects the connection piece and the support structure, A method for installing the concrete floor material according to claim 1.

3. In the forming step, a second connecting member is provided to connect the finishing material and the floor material. A method for installing the concrete floor material according to claim 1 or 2.

4. In the second installation step, a damage suppression material is provided between the finishing material and the support to suppress damage to the finishing material. A method for installing the concrete floor material according to claim 1 or 2.

5. In the forming step, a slag stopper material is provided on the upper surface of the finishing material. A method for installing the concrete floor material according to claim 1 or 2.

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