Building basement exterior wall post-cast strip waterproof structure

Abstract

The utility model relates to a waterproof structure, belongs to the technical field of basement construction, and particularly relates to a building basement outer wall post-cast strip waterproof structure which comprises indoor side pre-cast reinforced concrete and indoor side post-cast reinforced concrete, the indoor side post-cast reinforced concrete is surrounded by the indoor side pre-cast reinforced concrete, and the indoor side post-cast reinforced concrete is surrounded by the indoor side post-cast reinforced concrete. Expansion water-stop strips are embedded in construction joints of the indoor side pre-poured reinforced concrete and the indoor side post-poured reinforced concrete, steel wire meshes are arranged on one sides of the expansion water-stop strips, and rubber externally-attached type water-stop belts are arranged on the other sides of the expansion water-stop strips. The post-cast strip sealing structure can prevent gap enlargement caused by excessive deformation of the post-cast strip, improves the waterproof reliability of the structure, and solves the problem that a reliable waterproof effect cannot be achieved when the post-cast strip has cracks in an existing prefabricated template sealing method.

Description

Technical Field

[0001] The utility model relates to the technical field of basement construction, in particular to a waterproof structure for the post-cast strip of the exterior wall of a building basement. Background Technique

[0002] With the complex diversification of building structural forms, different requirements are also placed on the depth of the basement foundation. During the construction process, in order to solve the problems of uneven shrinkage, cracking, and water leakage of the complex and long concrete-cast walls, a post-cast strip structure is usually adopted, that is, a construction method of pouring a strip-shaped concrete after a certain number of days of delay. In order to carry out the outdoor backfill construction in a timely manner and shorten the construction period, the post-cast strip is generally blocked and waterproofed.

[0003] In the prior art, when waterproof construction is carried out on the post-cast strip, the common method is to use formwork blocking. The post-cast strip area is isolated from the backfill soil by steel plates or precast concrete slabs. When there are cracks in the post-cast strip, water seepage and leakage problems will still occur. Therefore, a waterproof structure for the post-cast strip of the exterior wall of a building basement is proposed to solve the above problems. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model proposes a waterproof structure for the post-cast strip of the exterior wall of a building basement, which can prevent the gap from increasing due to excessive deformation of the post-cast strip and improve the waterproof reliability of the structure.

[0005] The technical solution for achieving the purpose of the utility model is: a waterproof structure for the post-cast strip of the exterior wall of a building basement, including the pre-cast reinforced concrete on the indoor side and the post-cast reinforced concrete on the indoor side. The pre-cast reinforced concrete on the indoor side surrounds the post-cast reinforced concrete on the indoor side. An expansion waterstop strip is embedded at the construction joint between the pre-cast reinforced concrete on the indoor side and the post-cast reinforced concrete on the indoor side. A wire mesh is arranged on one side of the expansion waterstop strip, and a rubber external attached waterstop belt is arranged on the other side of the expansion waterstop strip.

[0006] In some embodiments, a thick masonry protective layer is arranged on the side of the pre-cast reinforced concrete on the indoor side and the post-cast reinforced concrete on the indoor side close to the rubber external attached waterstop belt, and the thick masonry protective layer covers the construction joint between the pre-cast reinforced concrete on the indoor side and the post-cast reinforced concrete on the indoor side.

[0007] In some embodiments, an additional waterproof layer is arranged on one side of the thick masonry protective layer, a coating waterproof layer is arranged on one side of the additional waterproof layer, and a rolled waterproof layer is arranged on one side of the coating waterproof layer.

[0008] In some embodiments, a basement masonry side wall is arranged on one side of the rolled waterproof layer, and the basement masonry side wall and the thick masonry protective layer form a concave-convex stepped state.

[0009] Compared with the prior art, the remarkable advantages of the utility model are:

[0010] The utility model uses high-strength expansion concrete as the post-cast reinforced concrete, which can reduce the construction gap between the pre-cast and post-cast reinforced concrete. At the same time, an expansion water stop strip, a wire mesh and a rubber water stop belt are respectively arranged at the construction gap, which can enhance the waterproof reliability. The wire mesh can prevent the excessive deformation of the post-cast strip from causing an increase in the gap and improve the integrity of the structural waterproofing.

[0011] It solves the problem that the existing precast formwork plugging method cannot achieve a reliable waterproof effect when there are cracks in the post-cast strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present utility model will be further explained below in conjunction with the drawings and embodiments:

[0013] Figure 1 It is a schematic cross-sectional structure diagram of the basement exterior wall provided by the present utility model in an embodiment;

[0014] Figure 2 It is provided by the present utility model in an embodiment Figure 1 An enlarged structure diagram at position A;

[0015] Figure 3 It is provided by the present utility model in an embodiment Figure 1 An enlarged structure diagram at position B.

[0016] DESCRIPTION OF THE REFERENCE NUMERALS:

[0017] 1. Pre-cast reinforced concrete on the indoor side; 2. Post-cast reinforced concrete on the indoor side; 3. Expansion water stop strip; 4. Wire mesh; 5. Rubber external water stop belt; 6. Thick masonry protective layer; 7. Additional waterproof layer; 8. Coating waterproof layer; 9. Coiled material waterproof layer; 10. Basement masonry side wall. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be described in detail below. The technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] The present utility model provides a waterproof structure for the post-cast strip of the basement exterior wall of a building through improvement. The technical solution of the present utility model is:

[0020] As Figure 1As shown in the figure, a waterproof structure for the post-cast strip of the basement exterior wall of a building includes the first-poured reinforced concrete 1 on the indoor side and the second-poured reinforced concrete 2 on the indoor side. The second-poured reinforced concrete 2 on the indoor side is selected as reinforced concrete with a strength grade one higher than that of the first-poured reinforced concrete 1 on the indoor side. The first-poured reinforced concrete 1 on the indoor side surrounds the second-poured reinforced concrete 2 on the indoor side, and the construction joints between the two are in an unevenly fitting shape. An expansion waterstop strip 3 is embedded at the construction joint between the first-poured reinforced concrete 1 on the indoor side and the second-poured reinforced concrete 2 on the indoor side. The expansion waterstop strip 3 is made of a waterstop stainless steel plate to reduce the rust removal time of the waterstop steel plate before pouring. A wire mesh 4 is arranged on one side of the expansion waterstop strip 3. The wire mesh 4 is arranged on the side of the construction joint close to the indoor side. After the wire mesh 4 is closed, the construction of the indoor surface layer can be started. A rubber external waterstop belt 5 is arranged on the other side of the expansion waterstop strip 3.

[0021] As Figure 2 and Figure 3 shown, in an embodiment, a thick masonry protective layer 6 is arranged on the side of the first-poured reinforced concrete 1 on the indoor side and the second-poured reinforced concrete 2 on the indoor side close to the rubber external waterstop belt 5. The thick masonry protective layer 6 covers the construction joint between the first-poured reinforced concrete 1 on the indoor side and the second-poured reinforced concrete 2 on the indoor side.

[0022] An additional waterproof layer 7 is arranged on one side of the thick masonry protective layer 6. The additional waterproof layer 7 can use common waterproof materials such as asphalt non-curing waterproof coiled materials. A coating waterproof layer 8 is arranged on one side of the additional waterproof layer 7. A coiled material waterproof layer 9 is arranged on one side of the coating waterproof layer 8.

[0023] A basement masonry side wall 10 is arranged on one side of the coiled material waterproof layer 9. The basement masonry side wall 10 and the thick masonry protective layer 6 form an uneven stepped state.

[0024] The specific working method is as follows: When constructing the waterproof structure for the post-cast strip of the basement exterior wall, first of all, it should be noted that the second-poured reinforced concrete 2 on the indoor side uses expansion concrete with a strength grade one higher than that of the first-poured reinforced concrete 1 on the indoor side. At the same time, during masonry, an expansion waterstop strip 3 is set at the midpoint of the construction joint. The wire mesh 4 is used to close the construction joint on the side close to the indoor side, and the rubber external waterstop belt 5 is used to seal the construction joint on the side close to the outdoor side. Then, the pouring of the thick masonry protective layer 6 is continued. There is an uneven stepped state between the thick masonry protective layer 6 and the basement masonry side wall 10 to increase the path of water. At the same time, an additional waterproof layer 7, a coating waterproof layer 8, and a coiled material waterproof layer 9 are sequentially laid between the two.

[0025] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacements of the above technical features. Matters not covered in the present utility model belong to the common general knowledge of those skilled in the art.

Claims

1. A waterproof structure for the post-cast strip of the basement exterior wall of a building, comprising the indoor-side first-cast reinforced concrete (1) and the indoor-side post-cast reinforced concrete (2), wherein the indoor-side first-cast reinforced concrete (1) surrounds the indoor-side post-cast reinforced concrete (2), and is characterized in that: An expansion waterstop strip (3) is embedded at the construction joint between the in - door side first - cast reinforced concrete (1) and the in - door side post - cast reinforced concrete (2). A wire mesh sheet (4) is arranged on one side of the expansion waterstop strip (3), and a rubber externally - attached waterstop belt (5) is arranged on the other side of the expansion waterstop strip (3).

2. The waterproof structure of the post-cast strip for the basement exterior wall of a building according to claim 1, characterized in that: A thick masonry protective layer (6) is arranged on the side of the in - door side first - cast reinforced concrete (1) and the in - door side post - cast reinforced concrete (2) close to the rubber externally - attached waterstop belt (5). The thick masonry protective layer (6) covers the construction joint between the in - door side first - cast reinforced concrete (1) and the in - door side post - cast reinforced concrete (2).

3. The waterproof structure of the post-cast strip of the basement exterior wall of a building according to claim 2, characterized in that: An additional waterproof layer (7) is arranged on one side of the thick masonry protective layer (6). A coating waterproof layer (8) is arranged on one side of the additional waterproof layer (7), and a rolled - material waterproof layer (9) is arranged on one side of the coating waterproof layer (8).

4. A waterproof structure for the post-cast strip of the basement exterior wall of a building according to claim 3, characterized in that: A basement masonry side wall (10) is arranged on one side of the rolled - material waterproof layer (9). The basement masonry side wall (10) and the thick masonry protective layer (6) form a concave - convex stepped state.

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