Large-area underground concrete pouring structure

Abstract

The utility model belongs to the technical field of pouring, and particularly relates to a large-area underground concrete pouring structure which comprises two groups of opposite concrete structural plates and a post-cast strip plate, and the post-cast strip plate is located between the two groups of concrete structural plates. First water retaining ridges are integrally arranged at the tops of the opposite ends of the two sets of concrete structural plates, U-shaped steel sealing plates are placed at the tops of the concrete structural plates, mortar smearing splayed corners are arranged at the joints of the U-shaped steel sealing plates and the concrete structural plates, and the inner side surfaces of the U-shaped steel sealing plates make contact with the outer side surfaces of the first water retaining ridges. According to the roof post-cast strip sealing structure, the measure cost (manual materials) before the roof post-cast strip is sealed can be reduced, and the water retaining effect can be improved; in addition, due to repeated utilization of the U-shaped steel sealing plate, leakage of the top plate post-cast strip is avoided, the labor cost can be saved, the hidden danger of leakage is reduced, and the construction quality of the post-cast strip can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, specifically to a structure for large-area underground concrete casting. Background Technology

[0002] In the construction of large-area underground reinforced concrete structures, to prevent cracks in the cast-in-place reinforced concrete structure caused by temperature stress shrinkage and uneven settlement, post-pouring strips need to be reserved at appropriate locations according to design or construction specifications. These post-pouring strips divide the pouring area into sections. During construction, concrete is poured first in the divided areas. After temperature stress shrinkage and settlement have stabilized, concrete is poured in the post-pouring strips. This segmented pouring method effectively solves the problem of concrete cracking. However, it also raises the issue of waterproofing and sealing the construction joint between the pouring area and the post-pouring strip.

[0003] Large-area underground reinforced concrete structures (such as underground parking garages) often have leakage problems in the floor slab, exterior walls, and roof slab. Based on past projects, the roof slab of underground structures has the largest leakage volume, which is difficult to deal with and costly.

[0004] Before the post-pouring strip of the underground reinforced concrete structure roof slab (such as the roof slab of an underground garage) is sealed, the sides of the post-pouring strip are covered with mortar using small gray bricks, and the wooden formwork is covered with reflective strips or painted. However, the mortar cracks when people and vehicles pass by, resulting in poor water-blocking effect, high labor and material input, and the material cannot be reused.

[0005] During the pouring of the top slab of the block, a water-stop steel plate is pre-embedded, and a quick-release wire mesh (barbed wire) is used to divide the block and leave a post-pouring strip. The traditional construction method for the post-pouring strip involves roughening and removing loose concrete and cleaning the quick-release wire mesh, tying reinforcing bars, and then pouring. In actual construction, it is difficult to roughen the loose concrete and clean the quick-release wire mesh under the water-stop steel plate. The welding quality of the water-stop steel plate is sometimes substandard, and the underside of the water-stop steel plate cannot be vibrated during pouring, resulting in insufficient compaction. Cracks appear on the surface of the construction joint between the pouring area and the post-pouring strip, which will seep downwards along the water-stop steel plate, rendering the water-stop steel plate ineffective. This is a common problem of leakage in the post-pouring strip of the top slab of the building, and it is also the most difficult to eradicate. Therefore, a method for large-area underground concrete pouring structures is invented. Utility Model Content

[0006] In view of the above and / or existing problems in large-area underground concrete pouring structures, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a structure for large-area underground concrete pouring that can solve the aforementioned existing problems.

[0008] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0009] A structure for large-area underground concrete pouring includes two sets of opposing concrete structural slabs and a post-pouring strip slab. The post-pouring strip slab is located between the two sets of concrete structural slabs. A first water-retaining sill is integrally provided at the top of the opposite ends of the two sets of concrete structural slabs. A U-shaped steel sealing plate is placed on the top of the concrete structural slabs, and the connection between the U-shaped steel sealing plate and the concrete structural slab is provided with mortar-plastered chamfers. The inner surface of the U-shaped steel sealing plate is in contact with the outer surface of the first water-retaining sill.

[0010] As a preferred embodiment of the present invention for a large-area underground concrete pouring structure, wherein: both ends of the top of the post-pouring strip slab are integrally provided with a second water-retaining sill, and the gap between the first water-retaining sill and the second water-retaining sill is set as a construction joint.

[0011] As a preferred embodiment of the present invention for a large-area underground concrete pouring structure, wherein: the opposite ends of the concrete structural slab and the post-pouring strip slab are provided with a roughened layer, and the opposite ends of the first water-retaining sill and the second water-retaining sill are provided with a roughened layer.

[0012] As a preferred embodiment of the present invention for a large-area underground concrete pouring structure, wherein: a V-shaped groove is provided at the top of the construction joint, and the construction joint is filled with a non-curing rubber asphalt waterproof coating, and the non-curing rubber asphalt waterproof coating is filled in two stages.

[0013] As a preferred embodiment of the present invention for a large-area underground concrete pouring structure, the top of the first and second water-retaining sills is provided with a waterproof membrane to improve waterproof performance.

[0014] As a preferred embodiment of the present invention for a large-area underground concrete pouring structure, the top of the waterproof membrane is provided with a slope-shaped protective layer, and the slope-shaped protective layer slopes to both sides of the construction joint.

[0015] Compared with existing technologies:

[0016] This invention not only reduces the cost of pre-sealing measures (labor and materials) for the post-cast strip of the roof slab, but also improves the water-blocking effect. In addition, due to the reuse of the U-shaped steel sealing plate, leakage of the post-cast strip of the roof slab is avoided, which not only saves labor costs and reduces the risk of leakage, but also ensures the construction quality of the post-cast strip. Based on this, this invention is ingeniously designed, simple in structure, low in cost, and easy to use, and is suitable for large-scale promotion and application. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the concrete structural slab and the first water-retaining sill of this utility model;

[0018] Figure 2 This is a schematic diagram of the concrete structural slab, the first water-retaining sill, and the U-shaped steel enclosed plate of this utility model;

[0019] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the concrete structural slab, the first water-retaining sill, and the roughened layer of this utility model.

[0021] Figure 5 This is a schematic diagram of the concrete structural slab, the first water-retaining sill, the post-cast strip slab, and the second water-retaining sill of this utility model.

[0022] Figure 6 This is a schematic diagram of the concrete structural slab, the first water-retaining sill, the post-cast strip slab, the second water-retaining sill, and the V-groove structure of this utility model.

[0023] Figure 7 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 8 This utility model Figure 7 Enlarged schematic diagram of the structure at point B.

[0025] In the diagram: 1. Concrete structural slab; 2. First water-retaining sill; 3. U-shaped steel sealing plate; 4. Mortar corner plaster; 5. Roughened layer; 6. Post-cast strip slab; 7. V-groove; 8. Non-curing rubber asphalt waterproof coating; 9. Second water-retaining sill; 10. Waterproof membrane; 11. Slope-type protective layer. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] This utility model provides a structure for large-area underground concrete pouring. Please refer to [link / reference]. Figures 1-8The system includes two sets of opposing concrete structural slabs 1 and a post-cast strip slab 6, with the post-cast strip slab 6 located between the two sets of concrete structural slabs 1. A first water-retaining sill 2 is integrally provided at the top of each opposite end of the two sets of concrete structural slabs 1. A U-shaped steel closure plate 3 is placed on top of each concrete structural slab 1, and a mortar-plastered V-shaped corner 4 is provided at the connection between the U-shaped steel closure plate 3 and the concrete structural slab 1. The inner surface of the U-shaped steel closure plate 3 is in contact with the outer surface of the first water-retaining sill 2. A second water-retaining sill 9 is integrally provided at both ends of the top of the post-cast strip slab 6. The first water-retaining sill 2 and the second water-retaining sill 9... The gap between the retaining walls 9 is designated as a construction joint; the opposite ends of the concrete structural slab 1 and the post-cast strip slab are both provided with a roughened layer 5, and the opposite ends of the first retaining wall 2 and the second retaining wall 9 are both provided with a roughened layer 5; a V-shaped groove 7 is opened at the top of the construction joint, and the construction joint is filled with a non-curing rubber asphalt waterproof coating 8, which is filled in two stages; a waterproof membrane 10 is provided on the top of the first retaining wall 2 and the second retaining wall 9 to improve waterproof performance; a slope-shaped protective layer 11 is provided on the top of the waterproof membrane 10, and the slope-shaped protective layer 11 slopes to both sides of the construction joint.

[0028] In practical use, the specific operating steps for those skilled in the art are as follows:

[0029] When first pouring the concrete structural slab 1, pour the first water-retaining sill 2 (8cm high × 8cm wide) at the top facing the post-pouring strip slab 6. Then, customize the U-shaped steel sealing plate 3 (3mm thick) and install it on the concrete structural slab 1. Use mortar to seal the gap between the concrete structural slab 1 and the U-shaped steel sealing plate 3 with a 4-shaped corner, which effectively prevents water from entering the underground concrete structure (underground garage) and prevents the reinforcement of the post-pouring strip from corroding. The customized U-shaped steel sealing plate 3 can be reused in other projects.

[0030] When constructing the post-cast strip slab 6 (without pre-embedded waterstop steel plate), first roughen and clean the loose concrete and quick-release mesh (without waterstop steel plate, roughening and cleaning is simple and quality is easy to control) to form a roughened layer 5 on the post-cast strip slab 6. Then repeat the above steps to form a roughened layer 5 on the concrete structure slab 1, the first water retaining wall 2, the post-cast strip slab 6 and the second water retaining wall 9. When pouring the post-cast strip slab 6, pour the second water retaining wall 9 (8cm high × 8cm wide) at the top facing the concrete structure slab 1. Cut a V-shaped groove 7 (1cm deep) at the construction joint, clean the base layer and inject non-curing rubber asphalt waterproof coating 8 for caulking. Reinforce the construction joint with another layer of non-curing rubber asphalt waterproof coating 8 (6cm wide × 3mm). Then, construct the original waterproof membrane 10. After construction, construct a slope protection layer 11 on the waterproof membrane 10. The slope protection layer 11 slopes to both sides of the construction joint (slope 6%).

[0031] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A structure for large-area underground concrete pouring, comprising two sets of opposing concrete structural slabs (1) and a post-pouring strip slab (6), wherein the post-pouring strip slab (6) is located between the two sets of concrete structural slabs (1), characterized in that, The top of the opposite ends of the two sets of concrete structural slabs (1) are integrally provided with a first water-retaining sill (2). A U-shaped steel sealing plate (3) is placed on the top of the concrete structural slab (1), and a mortar corner (4) is provided at the connection between the U-shaped steel sealing plate (3) and the concrete structural slab (1). The inner surface of the U-shaped steel sealing plate (3) is in contact with the outer surface of the first water-retaining sill (2).

2. The structure for large-area underground concrete pouring according to claim 1, characterized in that, The top two ends of the post-cast strip plate (6) are integrally provided with a second water-blocking sill (9), and the gap between the first water-blocking sill (2) and the second water-blocking sill (9) is set as a construction joint.

3. A structure for large-area underground concrete pouring according to claim 2, characterized in that, The concrete structural slab (1) and the post-cast strip slab are both provided with a roughened layer (5) at their opposite ends, and the first water-retaining sill (2) and the second water-retaining sill (9) are both provided with a roughened layer (5) at their opposite ends.

4. A structure for large-area underground concrete pouring according to claim 2, characterized in that, The top of the construction joint is provided with a V-shaped groove (7), and the construction joint is filled with a non-curing rubber asphalt waterproof coating (8), which is filled in two stages.

5. A structure for large-area underground concrete pouring according to claim 2, characterized in that, The top of the first water-retaining sill (2) and the second water-retaining sill (9) are provided with waterproof membrane (10) to improve waterproof performance.

6. A structure for large-area underground concrete pouring according to claim 5, characterized in that, The top of the waterproof membrane (10) is provided with a sloped protective layer (11), and the sloped protective layer (11) slopes to both sides with the construction joint.

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