1. A stagnant water structure for post-cast strip which characterized in that includes: the waterproof structure comprises a bottom waterproof structure (100), a cast-in-place reinforced concrete structure (200), a cast-in-place concrete structure (300), a water stop steel plate (400), an externally attached water stop belt (500) and a closing-up net (600); a cast-in-place reinforced concrete structure (200) and a cast-in-place concrete structure (300) are arranged above the bottom waterproof structure (100), the cast-in-place reinforced concrete structure (200) is positioned on two sides, and the cast-in-place concrete structure (300) is positioned in the middle; the bottom of the joint of the cast-in-advance reinforced concrete structure (200) and the cast-in-post concrete structure (300) is provided with an externally attached water stop belt (500), the middle part is provided with a water stop steel plate (400), and the connecting end surface is provided with a closing-in net (600); the water stop steel plate (400) comprises a steel plate body (401) and a plurality of bolt assemblies (402) fixed on the steel plate body (401), the steel plate body (401) comprises a galvanized iron sheet layer (401a), a butyl rubber putty layer (401b) and isolation paper (401c), the butyl rubber putty layer (401b) wraps the periphery of the galvanized iron sheet layer (401a), the isolation paper (401c) is attached to the outer surface of the butyl rubber putty layer (401b), isolation paper slicing openings (401d) which are transversely elongated are formed in the middle of the upper surface and the lower surface of the isolation paper putty layer, and the isolation paper slicing openings (401d) divide the isolation paper (401c) into two half structures; longitudinal steel bars (201), transverse steel bars (202) and erection steel bars (203) are arranged in the cast-in-place reinforced concrete structure (200), nuts and screws in the bolt assemblies (402) are welded with the longitudinal steel bars (201) in the cast-in-place reinforced concrete structure (200), and the closing-up net (600) is bound on the erection steel bars (203) through iron wires (700).

2. A waterstop structure for a post-cast strip according to claim 1, wherein the bottom waterproof structure (100) comprises a cushion layer (101), a waterproof layer (102), an additional waterproof layer (103) and a waterproof protective layer (104) which are arranged from bottom to top in sequence.

3. A waterstop structure for a post-cast strip according to claim 2, wherein the bedding layer (101) is C15 concrete.

4. A waterstop structure for a post-cast strip according to claim 2, wherein the waterproof layer (102) is a waterproof roll.

5. A waterstop structure for a post-cast strip according to claim 2, wherein the waterproof additional layer (103) is a waterproof roll material, and the waterproof additional layer (103) is arranged corresponding to the connecting position of the pre-cast reinforced concrete structure (200) and the post-cast concrete structure (300).

6. A waterstop structure for a post-cast strip according to claim 2, wherein the waterproof protective layer (104) is 50mm thick C20 fine stone concrete.

7. A water stopping structure for a post-cast strip according to claim 1, wherein said galvanized iron sheet layer (401a) has a thickness of 0.4 mm.

8. A waterstop structure for a post-cast strip according to claim 1, wherein the thickness of the butyl rubber putty layer (401b) is 2-3 mm.

9. A waterstop structure for a post-cast strip according to claim 1, wherein the plurality of bolt assemblies (402) are arranged at equal intervals in a lateral direction of the steel plate body (401).

10. A waterstop structure for a post-cast strip according to claim 1, wherein the bolt assembly (402) is a Φ 10 bolt.

Background

For the project of reserving post-cast strips on the basement bottom plate, the outer wall and the top plate, in order to prevent water leakage at the interface of new and old concrete, a water stop structure is required to be additionally arranged at the position of the post-cast strip.

In order to ensure that the post-cast strip does not leak after the post-cast strip is poured at the later stage, a water stop structure is arranged at the post-cast strip, most of the post-cast strip is embedded by a 300 x 3 steel plate in the traditional field, and a section opening of the post-cast strip is blocked by a closing net. After concrete is poured, the steel plate is bonded with the concrete, gaps often appear at the bonding position of the concrete and the steel plate due to shrinkage deformation of the concrete, and water pressure at the upstream face of the rear bottom plate and the outer wall is increased after the post-cast strip is poured, so that leakage occurs at the joint of new and old concrete of the post-cast strip. The stagnant water steel sheet is add for the single stagnant water steel sheet that adds to traditional post-cast strip stagnant water structure, and the antiseep effect is relatively poor.

Disclosure of Invention

The invention aims to provide a water stopping structure for a post-cast strip, which is characterized in that an externally attached water stopping strip is additionally arranged on the upper part of a bottom waterproof structure, and a semi-rigid water stopping steel plate is arranged in the middle of the structure, so that the leakage risk of the post-cast strip is greatly reduced.

The technical scheme of the invention is as follows: a water stopping structure for a post-cast strip, comprising: the waterproof structure comprises a bottom waterproof structure 100, a cast-in-place reinforced concrete structure 200, a cast-in-place concrete structure 300, a water stop steel plate 400, an externally attached water stop belt 500 and a closing-up net 600; a cast-in-place reinforced concrete structure 200 and a cast-in-place concrete structure 300 are arranged above the bottom waterproof structure 100, the cast-in-place reinforced concrete structures 200 are positioned on two sides, and the cast-in-place concrete structure 300 is positioned in the middle; the bottom of the joint of the cast-in-advance reinforced concrete structure 200 and the cast-in-advance concrete structure 300 is provided with an externally attached water stop belt 500, the middle part is provided with a water stop steel plate 400, and the connecting end surface is provided with a closing-up net 600; the water stop steel plate 400 comprises a steel plate body 401 and a plurality of bolt assemblies 402 fixed on the steel plate body 401, the steel plate body 401 comprises a galvanized iron sheet layer 401a, a butyl rubber putty layer 401b and isolation paper 401c, the butyl rubber putty layer 401b wraps the periphery of the galvanized iron sheet layer 401a, the isolation paper 401c is attached to the outer surface of the butyl rubber putty layer 401b, isolation paper slicing openings 401d which are transversely and completely long are formed in the middle of the upper surface and the lower surface, and the isolation paper 401c is divided into two half structures by the isolation paper slicing openings 401 d; the precast reinforced concrete structure 200 is internally provided with longitudinal steel bars 201, transverse steel bars 202 and erection steel bars 203, nuts and screws in the bolt assemblies 402 are welded with the longitudinal steel bars 201 in the precast reinforced concrete structure 200, and the closing-up net 600 is bound on the erection steel bars 203 through iron wires 700.

Further, the bottom waterproof structure 100 includes a cushion layer 101, a waterproof layer 102, a waterproof additional layer 103 and a waterproof protective layer 104, which are sequentially disposed from bottom to top.

Further, the cushion layer 101 is made of C15 concrete.

Further, the waterproof layer 102 is made of waterproof coiled material.

Further, the waterproof additional layer 103 is made of waterproof coiled material, and the waterproof additional layer 103 is arranged corresponding to the connection position of the cast-in-place reinforced concrete structure 200 and the cast-in-place concrete structure 300.

Further, the waterproof layer 104 is made of C20 fine-stone concrete with a thickness of 50 mm.

Further, the thickness of the galvanized iron sheet layer 401a is 0.4 mm.

Further, the thickness of the butyl rubber putty layer 401b is 2-3 mm.

Further, the plurality of bolt assemblies 402 are arranged at equal intervals in the lateral direction along the steel plate body 401.

Further, the bolt specification adopted by the bolt assembly 402 is a Φ 10 bolt.

The invention has the following beneficial effects:

the invention adopts the semi-rigid water stop steel plate, which is beneficial to preventing the gap generated by the shrinkage deformation of the concrete; compared with the traditional method, the welding amount is reduced, so that the phenomena of welding penetration and the like of the water stop steel plate during welding can be prevented, and the environment protection is facilitated; the bottom of the invention is additionally provided with the externally-attached water stop belt, and compared with the traditional method, the invention is additionally provided with a water seepage prevention line; the invention has simple installation and strong flexibility, is beneficial to popularization and use, and accords with the principles of green, environmental protection and saving.

Drawings

FIG. 1 is a three-dimensional view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic view showing the connection of the water-stopping steel plates according to the present invention;

FIG. 5 is a schematic view of the connection of a closing-up net according to the present invention;

FIG. 6 is a schematic structural view of a water stop steel plate according to the present invention;

FIG. 7 is a three-dimensional view of a water stop steel plate according to the present invention;

FIG. 8 is a schematic view of the externally attached waterstop structure of the present invention;

in the figure: 100. a bottom waterproof structure; 101. a cushion layer; 102. a waterproof layer; 103. a waterproof additional layer; 104. a waterproof protective layer; 200. firstly, pouring a reinforced concrete structure; 201. longitudinal reinforcing steel bars; 202. transverse reinforcing steel bars; 203. erecting steel bars; 300. post-cast concrete structure; 400. a water stop steel plate; 401. a steel plate body; 401a, a galvanized iron sheet layer; 401b, a butyl rubber putty layer; 401c, release paper; 401d, separating paper separating ports; 402. a bolt assembly; 500. an externally-attached water stop; 600. closing the net; 700. and (4) iron wires.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

As shown in FIGS. 1 to 8, a water stopping structure for a post-cast strip comprises: the waterproof structure comprises a bottom waterproof structure 100, a cast-in-place reinforced concrete structure 200, a cast-in-place concrete structure 300, a water stop steel plate 400, an externally attached water stop belt 500 and a closing-up net 600.

A first-cast reinforced concrete structure 200 and a second-cast concrete structure 300 are arranged above the bottom waterproof structure 100, the first-cast reinforced concrete structures 200 are positioned at two sides, and the second-cast concrete structure 300 is positioned in the middle; the bottom of the joint of the cast-in-place reinforced concrete structure 200 and the cast-in-place reinforced concrete structure 300 is provided with an externally attached water stop belt 500, the middle part is provided with a water stop steel plate 400, and the connecting end surface is provided with a closing-up net 600.

Stagnant water steel sheet 400 includes steel sheet body 401 and fixes a plurality of bolt assembly 402 on steel sheet body 401, steel sheet body 401 includes galvanized iron cortex 401a, butyl rubber putty layer 401b and barrier paper 401c, butyl rubber putty layer 401b wraps up in galvanized iron cortex 401a periphery, barrier paper 401c is attached to butyl rubber putty layer 401b surface, and be located about the surface middle part be equipped with along horizontal through-length barrier paper slicing mouth 401d, barrier paper slicing mouth 401d separates into two half structures with barrier paper 401 c.

The pre-cast reinforced concrete structure 200 is internally provided with longitudinal steel bars 201, transverse steel bars 202 and erection steel bars 203, nuts and screws in the bolt assemblies 402 are welded with the longitudinal steel bars 201 in the pre-cast reinforced concrete structure 200, the closing-up net 600 is bound on the erection steel bars 203 through iron wires 700, and the closing-up net 600 is used for intercepting the pre-cast concrete and preventing the pre-cast concrete from flowing to the inner side of the post-cast strip.

In the embodiment of the present invention, the bottom waterproof structure 100 includes a cushion layer 101, a waterproof layer 102, a waterproof additional layer 103 and a waterproof protective layer 104, which are sequentially disposed from bottom to top.

In the embodiment of the invention, the thickness of the galvanized iron sheet layer 401a is 0.4mm, and the galvanized iron sheet layer 401a ensures that the water-stopping steel plate 400 has certain rigidity, so that the water-stopping steel plate 400 can be ensured to be straight, and the problem of rusting after the water-stopping steel plate is contacted with water can be effectively prevented.

In the embodiment of the invention, the thickness of the butyl rubber putty layer 401b is 2-3 mm, and the zinc-plated iron sheet layer 401a is completely wrapped by the butyl rubber putty layer 401 b.

In the embodiment of the invention, the isolation paper 401c is used as a protective layer of the butyl rubber putty layer 401b to prevent pollution, and the isolation paper 401c is torn off when the post-cast strip is poured, so that the concrete is ensured to be fully contacted with the butyl rubber putty layer 401 b.

The post-pouring belt can be poured after the concrete deformation is finished, one half of the water-stop steel plate 400 is buried in the concrete along with the pouring of the bottom plate or the outer wall when the water-stop steel plate is buried, the other half of the water-stop steel plate can be buried in the bottom plate or the outer wall when the post-pouring belt is poured, the isolation paper 401c can be divided into two parts after the isolation paper slicing port 401d is arranged, and the two parts are removed along with the pouring of the concrete respectively, so that the surface cleanness of the rubber putty is ensured.

In the embodiment of the invention, a plurality of bolt assemblies 402 are arranged at equal intervals along the transverse direction of the steel plate body 401, and the bolt specification adopted by the bolt assemblies 402 is phi 10 bolts.

The specific implementation process of the invention is (from bottom to top):

1. constructing a cushion layer 101: cushion layer 101 is made of C15 concrete;

2. construction of a waterproof layer 102: after the construction of the cushion layer 101 is completed, a waterproof layer 102 is laid, and the waterproof layer 102 is made of waterproof coiled materials;

3. constructing a waterproof additional layer 103: the waterproof additional layer 103 is used as a reinforcing layer of a waterproof weak part, and the manufacturing method and the material are the same as those of the waterproof layer 102; the waterproof additional layer 103 is arranged corresponding to the connection position of the cast-in-place reinforced concrete structure 200 and the cast-in-place concrete structure 300;

4. construction of the waterproof protective layer 104: after the construction of the waterproof additional layer 103 is completed, in order to protect the coiled material from being damaged, a waterproof protective layer 104 is poured above the waterproof additional layer, and the waterproof protective layer 104 is made of C20 fine-stone concrete with the thickness of 50 mm;

5. laying an externally-attached water stop 500;

6. binding bottom plate steel bars;

7. welding a water stop steel plate 400, and blocking the post-cast strip closing-in net 600;

8. pouring the pre-cast reinforced concrete structure 200, and roughening the position of the post-cast strip after pouring;

9. the post-cast concrete structure 300 is poured after the post-cast strip reaches age.

When the concrete is poured at the position of the post-cast strip, the strength of the concrete is improved by one strength grade compared with the strength of the concrete poured in advance, and an expanding agent is added into the post-cast concrete; during site construction, the externally-attached water stop belt 500 is paved to a bottom plate, an outer wall or a top plate, wherein one half of the externally-attached water stop belt is covered with the pre-cast reinforced concrete structure 200, and the other half of the externally-attached water stop belt is covered when the post-cast belt is filled and cast.

The invention has simple installation, less welding amount and excellent waterproof performance, and can effectively reduce the problem of water leakage at the post-cast strip.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.