Leakage-proof structure for post-cast strip of underground garage

Abstract

The utility model relates to the technical field of underground garage post-cast strips, and discloses an underground garage post-cast strip leakage-proof structure which comprises a precast concrete slab, first grooves are formed in the left side and the right side of the precast concrete slab respectively, second grooves are formed in the upper end and the lower end of the precast concrete slab respectively, and the two ends of each second groove are communicated with the two first grooves respectively. A first water stop strip and a second water stop strip are embedded in the first groove and the second groove respectively, the two ends of the first water stop strip exceed the preset length of the two ends of the first groove where the first water stop strip is located, meanwhile, the height of the first water stop strip is larger than the depth of the first groove, and the height of the second water stop strip is larger than the depth of the second groove. A plurality of threaded holes are formed in the left side and the right side of the prefabricated concrete plate at intervals in the direction parallel to the length direction of the first groove, and circular stepped holes are formed in the sides, away from the first groove, of the threaded holes. By means of the leakage-proof structure, waterproof construction and subsequent foundation pit backfilling can be conducted within a short period after the outer wall formwork is removed.

Description

Technical Field

[0001] The utility model relates to the technical field of post-cast strips in underground garages, in particular to a leak-proof structure for post-cast strips in underground garages. Background Art

[0002] A post-cast strip is a temporary construction joint reserved at corresponding positions of the foundation slab, wall, and beam according to design or construction specification requirements to prevent harmful cracks that may occur due to uneven self-shrinkage or settlement of cast-in-place reinforced concrete structures. The post-cast strip temporarily divides the structure into several parts. After the internal shrinkage of the components, the concrete of this construction joint is poured after a certain period of time to connect the structure into an integral part. The pouring time of the post-cast strip should preferably be selected when the temperature is relatively low. Concrete mixed with cement or a small amount of aluminum powder in the cement can be used for pouring. Its strength grade should be one level higher than that of the components to prevent cracks from appearing between the new and old concretes and causing weak parts. According to relevant specifications and design requirements, the pouring time of the post-cast strip of the garage exterior wall structure is postponed for a long time, and due to limited project site, it is necessary to backfill the foundation pit in advance to build a construction road. To solve this problem, the utility model provides a leak-proof structure for post-cast strips in underground garages with simple construction and reasonable structure. Using this structure, waterproofing can be constructed shortly after the removal of the exterior wall formwork, and subsequent backfilling of the foundation pit with soil can be carried out. Content of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a leak-proof structure for post-cast strips in underground garages to solve the technical problems pointed out in the above background art.

[0004] In order to achieve the above-mentioned utility model purpose, the following technical solutions are further adopted:

[0005] A leak-proof structure for post-cast strips in underground garages includes a precast concrete slab. First grooves are provided on both the left and right sides of the precast concrete slab, and second grooves are provided at both the upper and lower ends of the precast concrete slab. The two ends of the second groove are respectively communicated with the two first grooves. First waterstop strips and second waterstop strips are respectively embedded in the first groove and the second groove. Both ends of the first waterstop strip extend beyond the two ends of its corresponding first groove by a predetermined length, and at the same time, the height of the first waterstop strip is greater than the depth of the first groove. The height of the second waterstop strip is greater than the depth of the second groove. A plurality of threaded holes are arranged at intervals along the direction parallel to the length of the first groove on both the left and right sides of the precast concrete slab, and circular stepped holes are provided on the side of the threaded hole away from the first groove.

[0006] As a further improvement of the utility model, both the first waterstop strip and the second waterstop strip are elastic rubber waterstop strips.

[0007] As a further improvement of the utility model, the first waterstop strip and the second waterstop strip are integrally arranged.

[0008] As a further improvement of the present utility model, a fastening screw rod is threadedly connected in the threaded hole, and the fastening screw rod is threadedly connected with screw holes reserved on the walls on both sides of the post-cast strip.

[0009] As a further improvement of the present utility model, after the precast concrete slab is fixed on the walls on both sides of the post-cast strip through the fastening screw rod, the circular stepped hole is sealed with slightly expanded waterproof mortar.

[0010] The beneficial effects of the present utility model are as follows: The present utility model provides a leak-proof structure for the post-cast strip of an underground garage with simple construction and reasonable structure. Through this leak-proof structure, the leakage of water through the gap of the post-cast strip can be avoided, and the waterproofing and foundation pit backfilling construction can be carried out in advance. Description of the Drawings

[0011] The drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is Figure 1 an enlarged view of the structure of part A in

[0014] Figure 3 is a schematic structural diagram of the present utility model related to the first groove and the second groove;

[0015] Figure 4 is a schematic structural diagram of the present utility model related to the circular stepped hole;

[0016] Figure 5 is a schematic use diagram of the present utility model.

[0017] In the figures: 1, precast concrete slab; 2, first groove; 3, second groove; 4, first waterstop strip; 5, second waterstop strip; 6, threaded hole; 7, circular stepped hole; 8, fastening screw rod; 9, post-cast strip; 10, screw hole; 11, slightly expanded waterproof mortar. Detailed Embodiments

[0018] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0019] To enable those skilled in the art to better understand the solution of this application, the following will clearly and completely describe the technical solution in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0020] As Figures 1-5 shown, a leak-proof structure for post-cast strips in an underground garage includes a precast concrete slab 1. First grooves 2 are formed on both the left and right sides of the precast concrete slab 1, and second grooves 3 are provided at both the upper and lower ends of the precast concrete slab 1. Both ends of the second groove 3 are respectively communicated with the two first grooves 2. A first waterstop strip 4 and a second waterstop strip 5 are respectively embedded in the first groove 2 and the second groove 3. Both ends of the first waterstop strip 4 extend beyond the two ends of the first groove 2 where it is located by a predetermined length, and at the same time, the height of the first waterstop strip 4 is greater than the depth of the first groove 2. The height of the second waterstop strip 5 is greater than the depth of the second groove 3. A plurality of threaded holes 6 are arranged at intervals on both the left and right sides of the precast concrete slab 1 along the direction parallel to the length of the first groove 2, and a circular stepped hole 7 is provided on the side of the threaded hole 6 away from the first groove 2.

[0021] Both the first waterstop strip 4 and the second waterstop strip 5 are elastic rubber waterstop strips.

[0022] The first waterstop strip 4 and the second waterstop strip 5 are integrally arranged.

[0023] A fastening screw rod 8 is threadedly connected in the threaded hole 6, and the fastening screw rod 8 is threadedly connected with screw holes 10 reserved on the walls on both sides of the post-cast strip 9.

[0024] After the precast concrete slab 1 is fixed on the walls on both sides of the post-cast strip 9 through the fastening screw rod 8, the circular stepped hole 7 is blocked with a slightly expanding waterproof mortar 11.

[0025] Working principle: Screw holes 10 are reserved on the walls on both sides of the post-cast strip 9 of the basement exterior wall during the casting of the post-cast strip 9. After the exterior wall formwork is removed, the precast concrete slab 1 is hoisted to the position of the post-cast strip 9 by a vertical transportation device. A through-threaded screw rod is inserted through the threaded hole 6 on the precast concrete slab 1 to lock the precast concrete slab 1 with the basement structure exterior wall. The elastic rubber waterstop strips at the horizontal joints between the precast concrete slabs 1 and the vertical joints between the precast concrete slabs 1 and the basement exterior wall are tightly contacted with the wall after extrusion, playing a waterproof role, and the circular stepped hole 7 is blocked with a slightly expanding waterproof mortar 11.

[0026] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, component disassembly or combination, etc., made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A leak-proof structure for post-cast strips in an underground garage, characterized in that: It includes a precast concrete panel, wherein the left and right sides of the precast concrete panel are provided with a first groove, the upper and lower ends of the precast concrete panel are provided with a second groove, the two ends of the second groove are respectively connected with the two first grooves, the first groove and the second groove are respectively embedded with a first water stop strip and a second water stop strip, the two ends of the first water stop strip exceed the predetermined length of the two ends of the first groove, and the height of the first water stop strip is greater than the depth of the first groove, and the height of the second water stop strip is greater than the depth of the second groove, and the left and right sides of the precast concrete panel are provided with a plurality of threaded holes at intervals along a direction parallel to the length of the first groove, and a circular stepped hole is provided on the side of the threaded hole away from the first groove.

2. The anti-leakage structure of the post-cast strip of the underground garage according to claim 1 is characterized by: The first water stop strip and the second water stop strip are both elastic rubber water stop strips.

3. The anti-leakage structure of the post-cast strip of the underground garage according to claim 2 is characterized by: The first water stop strip and the second water stop strip are integrally arranged.

4. The anti-leakage structure of the post-cast strip of an underground garage according to claim 1 is characterized by: A fastening screw is threadedly connected in the threaded hole, and the fastening screw is threadedly connected to screw holes reserved on the walls at both sides of the post-cast strip.

5. The anti-leakage structure of the post-cast strip of the underground garage according to claim 4 is characterized by: After the precast concrete slab is fixed to the wall on both sides of the post-casting strip by fastening screws, the circular stepped hole is sealed with micro-expansion waterproof mortar.

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