Force transfer waterproof structure for basement top plates on two sides of temporary mid-partition wall and construction method

Abstract

The invention relates to a waterproof structure and a construction method thereof, belongs to the technical field of waterproof construction, and particularly relates to a waterproof structure for force transmission of basement roofs on two sides of a temporary middle partition wall and a construction method thereof.The waterproof structure comprises force transmission corbels arranged on the two sides of the middle partition wall, and force transmission steel bars are arranged in the force transmission corbels; the top plate main body is arranged above the force transfer bracket, a top plate reinforcing steel bar is arranged in the top plate main body, and the force transfer reinforcing steel bar extends into the top plate main body and is welded and fixed with the top plate reinforcing steel bar; the water stop steel plate is arranged on one side of the top plate main body; the two functions of force transmission and water prevention of the basement roof on the two sides of the temporary mid-partition are considered, the force transmission safety of a foundation pit can be effectively ensured, and leakage of the basement roof can be more effectively prevented when the temporary mid-partition is detached and sewn in the later period; the problem of later-stage leakage caused by the fact that a water stop steel plate is difficult to arrange during construction is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof construction, in particular to a force transfer and waterproof structure and construction method for the basement roof on both sides of a temporary middle partition wall. Background Art

[0002] When carrying out underground space waterproof construction, for example, in a foundation pit beside a subway tunnel, the construction method of dividing the pit and constructing in batches is mostly adopted. In this method, a temporary middle partition wall needs to be arranged in the foundation pit, and the basement roofs on both sides of the middle partition wall will be disconnected.

[0003] In the prior art, since the basement roofs on both sides of the middle partition wall will be disconnected during construction, the structural slabs on both sides of the foundation pit need to transfer force through replacement struts, resulting in the inability to normally set the water stop steel plate. The current solution is to give priority to ensuring the force transfer requirements of the foundation pit and not set the water stop steel plate, but this leaves potential safety hazards, and it is easy to occur underground roof leakage during later demolition. Therefore, a force transfer and waterproof structure and construction method for the basement roof on both sides of a temporary middle partition wall are proposed to solve the above problems. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention proposes a force transfer and waterproof structure and construction method for the basement roof on both sides of a temporary middle partition wall, which takes into account the two functions of force transfer and waterproofing of the basement roofs on both sides of the temporary middle partition wall, can effectively ensure the safety of force transfer in the foundation pit, and can more effectively prevent basement roof leakage when sewing after the later removal of the temporary middle partition wall.

[0005] The technical solution for achieving the purpose of the present invention is: a force transfer and waterproof structure and construction method for the basement roof on both sides of a temporary middle partition wall, including force transfer brackets arranged on both sides of the middle partition wall, and force transfer steel bars are arranged inside the force transfer brackets, and further includes;

[0006] A roof main body arranged above the force transfer brackets, roof steel bars are arranged inside the roof main body, and the force transfer steel bars extend into the roof main body and are welded and fixed to the roof steel bars;

[0007] A water stop steel plate arranged on one side of the roof main body.

[0008] In some embodiments, shear resistance strengthening steel bars are jointly arranged in the force transfer brackets and the roof main body, and the shear resistance strengthening steel bars are welded and fixed to both the force transfer steel bars and the roof steel bars.

[0009] In some embodiments, stitching area steel bars for mutual connection are arranged between the force transfer brackets on both sides and the roof main body.

[0010] A construction method for a force transfer and waterproof structure for the basement roof on both sides of a temporary middle partition wall: including:

[0011] Step 1: When constructing the basement top slab, set force-transferring corbels at the lower part close to the bottom of the slab at the intersection of the temporary middle partition wall and the main body of the slab. Install force-transferring steel bars inside the force-transferring corbels to transfer the force to the main body of the slab through the force-transferring corbels.

[0012] Step 2: Install shear-resistant reinforcement bars in the force-transferring corbels and the main body of the slab to ensure that no cracks occur between the force-transferring corbels and the basement top slab.

[0013] Step 3: Set a waterstop steel plate at the end of the main body of the slab to ensure the waterproof effect.

[0014] Step 4: When removing the temporary middle partition wall, remove the redundant concrete of the force-transferring corbels together and retain the force-transferring steel bars.

[0015] Step 5: Connect the reinforcement bars in the stitching area with the top slab reinforcement bars and force-transferring steel bars on both sides, and pour the post-cast structure in the stitching area with slightly expanded fine aggregate concrete of a higher strength grade.

[0016] Step 6: Extend the waterproof additional layer 250 mm on both sides of the post-cast structure in the stitching area and construct the waterproofing of the basement top slab.

[0017] Compared with the prior art, the remarkable advantages of the present invention are:

[0018] In the present invention, by setting force-transferring corbels, the problem of force transfer for the replacement support of the basement top slab on both sides of the temporary middle partition wall is solved. Force-transferring steel bars are set in the force-transferring corbels, and shear-resistant reinforcement bars are set between the force-transferring corbels and the basement top slab. The reinforcement bars in the stitching area are used to connect the top slab reinforcement bars and the force-transferring steel bars of the corbels on both sides. Slightly expanded fine aggregate concrete of a higher strength grade is used to pour the post-cast structure in the stitching area, taking into account both the functions of force transfer and waterproofing for the basement top slab on both sides of the temporary middle partition wall, which can effectively ensure the safety of foundation pit force transfer and can more effectively prevent leakage of the basement top slab during the later stitching after the removal of the temporary middle partition wall.

[0019] The problem of leakage in the later stage caused by the difficulty of setting the waterstop steel plate during construction is solved. Description of the Drawings

[0020] The present invention will be further explained below with reference to the drawings and embodiments:

[0021] Figure 1 It is a schematic diagram of the construction structure (including the middle partition board) provided by the present invention in an embodiment;

[0022] Figure 2 It is a schematic diagram of the construction structure (excluding the middle partition board) provided by the present invention in an embodiment.

[0023] Description of the reference numerals:

[0024] 1. Force-transmitting corbel; 2. Force-transmitting steel bars; 3. Top plate body; 4. Top plate steel bars; 5. Water-stop steel plate; 6. Shear reinforcement steel bars; 7. Seam area steel bars. DETAILED DESCRIPTION

[0025] The present invention is described in detail below, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] The present invention provides a temporary partition wall with a basement roof that transmits force and takes waterproofing into consideration, and a construction method thereof. The technical solution of the present invention is:

[0027] like Figure 1 As shown, a temporary basement roof force transmission and waterproofing structure and construction method on both sides of the middle partition wall includes force transmission brackets 1 arranged on both sides of the middle partition wall, force transmission steel bars 2 are arranged inside the force transmission brackets 1, and further includes;

[0028] A top plate body 3 is provided above the force transmission corbel 1, a top plate steel bar 4 is provided in the top plate body 3, and the force transmission steel bar 2 extends into the top plate body 3 and is welded and fixed to the top plate steel bar 4;

[0029] A water-stop steel plate 5 is provided on one side of the top plate body 3 , and the water-stop steel plate 5 is convex.

[0030] like Figure 2 As shown, in one embodiment, the force transmission corbel 1 and the top plate body 3 are both provided with shear reinforcement steel bars 6, and the shear reinforcement steel bars 6 are welded and fixed to the force transmission steel bars 2 and the top plate steel bars 4;

[0031] In one embodiment, suture area steel bars 7 for mutual connection are provided between the force transmission corbels 1 on both sides and the top plate body 3 .

[0032] It should be added that: when there is a need not to retain the force transmission corbel 1 as a permanent structure, the force transmission corbel 1 can be removed together with the temporary middle partition wall, and all the force transmission steel bars 2 can be cut off, which will not affect the purpose of the present invention.

[0033] A construction method for a temporary basement top plate on both sides of a partition wall that transmits force and takes waterproofing into consideration: comprising:

[0034] Step 1: When constructing the basement top slab, a force transmission bracket 1 is installed at the lower part of the intersection of the temporary middle partition wall and the top slab body 3, close to the bottom of the slab. A force transmission steel bar 2 is installed inside the force transmission bracket 1 to transmit the force to the top slab body 3 through the force transmission bracket 1;

[0035] Step 2: Shear resistance strengthening steel bars 6 are arranged in the force-transferring bracket 1 and the main roof slab 3, which will ensure that no cracking occurs between the force-transferring bracket 1 and the basement roof slab;

[0036] Step 3: A waterstop steel plate 5 is arranged at the end of the main roof slab 3 to ensure the waterproof effect;

[0037] Step 4: When the temporary middle partition wall is demolished, the redundant concrete of the force-transferring bracket 1 is demolished together, and the force-transferring steel bars 2 are reserved;

[0038] Step 5: The stitching zone steel bars 7 are connected to the roof slab steel bars 4 and the force-transferring steel bars 2 on both sides, and the stitching zone post-cast structure is poured with slightly expanded fine aggregate concrete of a higher strength grade;

[0039] Step 6: The waterproof additional layer is extended 250 mm on each side of the stitching zone post-cast structure, and the waterproofing of the basement roof slab is constructed.

[0040] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed above, but also include the technical solutions composed of equivalent replacements of the above technical features. The matters not covered in the present invention belong to the common general knowledge of those skilled in the art.

Claims

1. A waterproof structure that takes into account the force transfer of the basement roof on both sides of a temporary middle partition wall, including force transfer brackets (1) arranged on both sides of the middle partition wall, characterized in that: The force transmission corbel (1) is provided with a force transmission steel bar (2) inside, and further comprises: A top plate body (3) is arranged above the force transmission corbel (1), a top plate steel bar (4) is arranged in the top plate body (3), and the force transmission steel bar (2) extends into the top plate body (3) and is welded and fixed to the top plate steel bar (4); A water-stop steel plate (5) is provided on one side of the top plate body (3).

2. The waterproof structure for force transfer on both sides of the temporary middle partition wall of the basement roof according to claim 1, wherein: The force transmission corbel (1) and the top plate main body (3) are both provided with shear-resistant reinforcement steel bars (6), and the shear-resistant reinforcement steel bars (6) are welded and fixed to the force transmission steel bars (2) and the top plate steel bars (4).

3. A force transmission and waterproofing structure for the basement roof on both sides of a temporary middle partition wall according to claim 1, characterized in that: Suture zone steel bars (7) for mutual connection are provided between the force transmission corbels (1) and the top plate body (3) on both sides.

4. The construction method of the force transfer and waterproofing structure for the basement roof on both sides of the temporary middle partition wall according to any one of claims 1-3, characterized in that: include: Step 1: When constructing the basement top slab, a force transmission bracket (1) is set at the lower part of the intersection of the temporary middle partition wall and the top slab body (3) close to the bottom of the slab, and a force transmission steel bar (2) is set inside the force transmission bracket (1) to transmit force to the top slab body (3) through the force transmission bracket (1); Step 2: Install shear reinforcement steel bars (6) in the load-transmitting corbel (1) and the top plate body (3) to ensure that no cracks occur between the load-transmitting corbel (1) and the basement top plate; Step 3: Install a water-stop steel plate (5) at the end of the top plate body (3) to ensure a waterproof effect; Step 4: When the temporary partition wall is removed, the excess concrete of the force transmission corbel (1) is removed together, and the force transmission steel bar (2) is retained; Step 5: Use the seam area steel bars (7) to connect with the top plate steel bars (4) and the force transmission steel bars (2) on both sides, and use a higher grade micro-expansion fine stone concrete to cast the seam area post-cast structure; Step 6: Construct an additional waterproof layer extending 250mm on both sides of the post-cast structure in the joint area, and construct waterproofing for the basement roof.

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