Foundation pit air film rain prevention and drainage simple device

Abstract

The utility model discloses a kind of foundation pit air film rain prevention and drainage simple device, belong to building construction equipment technical field, including supporting crown beam, air film body, air film rain curtain, magic tape and steel rainwater collecting groove, the upper end of air film rain curtain is connected to the bottom end outer periphery of air film body and hangs down downward, steel rainwater collecting groove is fixed in the outer side wall of supporting crown beam and is located in the lower end of air film rain curtain directly below, the lower end of air film rain curtain is detachably pasted and sealed on the inner side wall of steel rainwater collecting groove by magic tape. The utility model is through above-mentioned structure, effectively solve the problem that rainwater seepage is caused by the sealing of air film device and the connecting place of foundation pit edge in prior art is not strict, with rainproof drainage reliable, simple structure, installation is convenient, construction efficiency is high and the characteristics of low maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of building construction equipment technology, and in particular to a simple device for preventing and draining rainwater from a foundation pit using an air-supported membrane structure. Background Technology

[0002] In modern civil engineering construction, deep foundation pit construction is a key link. It has a long construction period, a complex working environment, and is directly constrained by weather conditions, especially rainy weather. Rainfall not only causes water accumulation in the foundation pit, which may lead to slope instability, but also interrupts construction work, seriously affecting the progress and quality of the project.

[0003] To ensure all-weather operation within the foundation pit during the rainy season, the industry has introduced air-supported membrane structures to cover the entire pit. These structures utilize the pressure difference between the inside and outside of the membrane to support the membrane, creating a large-span, fully enclosed work space that effectively isolates the construction site from severe weather conditions.

[0004] However, in practical applications, such air-supported membrane structures have structural defects in achieving rain protection. Rainwater slides down the outer surface of the huge air-supported membrane structure and eventually collects at the bottom edge. The bottom edge of the air-supported membrane structure needs to be anchored to the supporting cap beams around the foundation pit. Due to the difference in physical properties between the flexible membrane material and the rigid concrete cap beams, there are gaps at the connection between the two that are difficult to seal completely. As a result, the rainwater collected at the bottom seeps into the foundation pit through the connection gaps, which greatly reduces the rain protection effect of the air-supported membrane structure and fails to fundamentally solve the problem of rainwater protection for the foundation pit.

[0005] Therefore, this utility model proposes a simple air-supported membrane rain protection and drainage device for foundation pits to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing simple air-supported membrane rainproof and drainage device for foundation pits, such as the gap at the connection between the air-supported membrane structure and the foundation pit support cap beam leading to incomplete rainproofing and drainage, and the complex and inconvenient installation of the waterproof structure, this utility model aims to provide a simple air-supported membrane rainproof and drainage device for foundation pits with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a simple device for rain protection and drainage of foundation pits using an air-supported membrane structure, comprising: a support crown beam, an air-supported membrane body, an air-supported membrane rain curtain, Velcro straps, and a steel rainwater collection trough.

[0008] The upper end of the air-supported rain curtain is connected to the lower outer periphery of the air-supported membrane body by heat fusion and hangs down from the connection point of the air-supported membrane body.

[0009] Furthermore, the steel rainwater collection trough is fixed to the outer wall of the support crown beam by air nails and is located directly below the lower end of the air-supported membrane rain curtain. The lower end of the air-supported membrane rain curtain is detachably attached to and sealed to the inner wall of the steel rainwater collection trough facing the air-supported membrane rain curtain by Velcro.

[0010] Preferably, the simple rainproof and drainage device for the foundation pit air membrane also includes rainwater pipes and a rainwater collection tank, with the bottom of the steel rainwater collection trough connected to the rainwater collection tank via rainwater pipes.

[0011] Preferably, the simple rainproof and drainage device for the foundation pit air membrane also includes a road and a pumping inspection hole, with the rainwater collection pool buried below the road and the lower end of the pumping inspection hole connected to the rainwater collection pool.

[0012] Preferably, a water collection funnel is installed every fifty meters on the rainwater pipe, and the water collection funnel is connected to the rainwater pipe.

[0013] Preferably, the support piles are connected below the support cap beam.

[0014] Preferably, the sidewalls of the support piles are anchored to the strata outside the foundation pit via steel strand anchor cables.

[0015] Preferably, the internal space of the air-supported membrane structure contains the building to be constructed.

[0016] Preferably, a raft slab is fixedly connected to the bottom of the building to be constructed.

[0017] Preferably, the Velcro includes a hook side and a loop side, wherein the hook side is fixed to the inner wall of the steel rainwater collection trough, and the loop side is fixed to the lower end of the air-film rain curtain.

[0018] This utility model has the following beneficial effects: 1. This utility model solves the problem of rainwater leakage caused by poor sealing at the connection between the air-supported membrane device and the edge of the foundation pit in the prior art by setting an air-supported membrane rain curtain that hangs downward from the bottom of the air-supported membrane body and using Velcro to detachably seal the lower end of the air-supported membrane rain curtain to a steel rainwater collection trough fixed on the support crown beam. It reliably seals the connection gaps and guides and collects rainwater in an orderly manner, greatly improving the rainproof and drainage performance of the device.

[0019] 2. This utility model uses Velcro to flexibly connect the air-supported rain curtain and the steel rainwater collection trough, and uses air nails to quickly fix the steel rainwater collection trough. This solves the problems of complex installation, long construction period and difficulty in maintenance and replacement of traditional rainproof structures. The device has a simple structure, is easy to install, has high construction efficiency and low maintenance cost. Attached Figure Description

[0020] Figure 1This is a structural diagram of a simple rain-draining device for an air-supported membrane structure in a foundation pit, as proposed in this utility model. Figure 2 This is an enlarged view of point A of a simple air-supported membrane rain-drainage device for foundation pits proposed in this utility model.

[0021] Legend: 1. Supporting crown beam; 2. Air-supported membrane body; 3. Air-supported membrane rain curtain; 4. Velcro; 5. Steel rainwater collection trough; 6. Rainwater pipe; 7. Pumping and maintenance hole; 8. Road; 9. Rainwater collection pool; 10. Steel strand anchor cable; 11. Support pile; 12. Building to be constructed; 13. Raft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 2 This utility model embodiment provides a simple rainproof and drainage device for foundation pits using an air-supported membrane structure, including support piles 11. The sidewalls of the support piles 11 are anchored to the stratum outside the foundation pit via steel strand anchor cables 10 to enhance stability. A support cap beam 1 is fixedly connected to the top of the support piles 11. An air-supported membrane body 2 covers the support cap beam 1. The internal space of the air-supported membrane body 2 accommodates the building to be constructed 12. An air-supported membrane rain curtain 3 is set between the air-supported membrane body 2 and the support cap beam 1. A steel rainwater collection trough 5 is used to collect rainwater. Velcro 4 is used to connect the air-supported membrane rain curtain 3 and the steel rainwater collection trough 5. A pumping and maintenance hole 7 is opened on the road 8. A rainwater collection pool 9 is buried below the road 8. The steel rainwater collection trough 5 and the pumping and maintenance hole 7 are both connected to the rainwater collection pool 9 through rainwater pipes 6, thereby forming a complete rainwater collection and drainage system.

[0024] Please refer to Figure 2 The upper end of the air-supported membrane rain curtain 3 is fixedly connected to the outer periphery of the bottom end of the air-supported membrane body 2 by heat fusion, and hangs down naturally from the connection point of the air-supported membrane body 2 to cover the installation area between the air-supported membrane body 2 and the support crown beam 1. The steel rainwater collection trough 5 is fixed to the outer wall of the support crown beam 1 by air nails, and the installation position of the steel rainwater collection trough 5 is directly below the lower end of the air-supported membrane rain curtain 3. The lower end of the air-supported membrane rain curtain 3 is detachably glued and sealed to the inner wall of the steel rainwater collection trough 5 facing the air-supported membrane rain curtain 3 by Velcro 4.

[0025] Specifically, the Velcro 4 includes a hook side and a loop side. The hook side is fixed to the inner wall of the steel rainwater collection trough 5, while the loop side is fixed to the lower end of the air-supported rain curtain 3. This flexible sealing and guiding structure, consisting of the air-supported rain curtain 3, the Velcro 4, and the steel rainwater collection trough 5, ensures that rainwater falling along the surface of the air-supported membrane body 2 can be effectively intercepted by the air-supported rain curtain 3 and accurately guided into the steel rainwater collection trough 5, thereby preventing rainwater from seeping into the foundation pit from the seams.

[0026] As a preferred embodiment, in order to achieve centralized collection and discharge of rainwater, the simple rainwater drainage device for the foundation pit air membrane also includes a rainwater pipe 6 and a rainwater collection pool 9. The bottom of the steel rainwater collection trough 5 is connected to the rainwater collection pool 9 through the rainwater pipe 6.

[0027] As a further preferred embodiment, the simple rainproof and drainage device for the foundation pit air membrane also includes a road 8 and a pumping and maintenance hole 7. The rainwater collection pool 9 is buried below the road 8, and the lower end of the pumping and maintenance hole 7 is connected to the rainwater collection pool 9.

[0028] As a preferred implementation method to further improve water collection efficiency, a water collection funnel is installed every fifty meters on the rainwater pipe 6, and the water collection funnel is connected to the rainwater pipe 6.

[0029] As a preferred constraint on the foundation structure of the excavation pit, a support pile 11 is connected below the support cap beam 1.

[0030] To further enhance the stability of the support structure, the sidewalls of the support piles 11 are anchored to the stratum outside the pit via steel strand anchor cables 10. The internal space of the air-supported membrane body 2 contains the building to be constructed 12, and the bottom of the building to be constructed 12 is fixedly connected to a raft 13.

[0031] Working principle: When rainfall occurs, rainwater falls on the arc-shaped outer surface of the air-supported membrane body 2 and slides down the surface of the air-supported membrane body 2 under the action of gravity. When the rainwater flows to the bottom periphery of the air-supported membrane body 2, the upper end of the air-supported membrane rain curtain 3 is fixedly connected to the air-supported membrane body 2 by heat fusion, and the air-supported membrane rain curtain 3 hangs downward and covers the connection area between the air-supported membrane body 2 and the supporting crown beam 1. Therefore, the sliding rainwater is effectively intercepted by the air-supported membrane rain curtain 3, and the rainwater then flows down the air-supported membrane... The surface of the rain curtain 3 continues to flow downwards. The steel rainwater collection trough 5 is fixed to the outer wall of the support crown beam 1 by air nails and is precisely located directly below the lower end of the air membrane rain curtain 3. The lower end of the air membrane rain curtain 3 is detachably attached to and sealed to the inner wall of the steel rainwater collection trough 5 by Velcro 4, ensuring that the rainwater flowing down from the air membrane rain curtain 3 can be seamlessly and completely guided and flow into the steel rainwater collection trough 5, eliminating the possibility of rainwater intruding into the pit from the joints. Rainwater collected in the steel rainwater collection trough 5 flows away through the rainwater pipe 6 connected to the bottom of the steel rainwater collection trough 5. At the same time, rainwater on the road surface 8 also flows in through the pumping and maintenance hole 7. Finally, all the rainwater from the steel rainwater collection trough 5 and the pumping and maintenance hole 7 is collected through the rainwater pipe 6 into the rainwater collection pool 9 buried under the road 8, realizing comprehensive and efficient collection and discharge of rainwater in the construction area. Throughout the process, the building 12 under construction and the raft 13 are always under the protection of the air membrane body 2, while the support piles 11 and the steel strand anchor cables 10 jointly ensure the stability and safety of the support cap beam 1.

Claims

1. A simple rainproof and drainage device for foundation pits using an air-supported membrane structure, comprising: Support crown beam (1) and air film body (2) covering the support crown beam (1); Its features are, The simple rainproof and drainage device for the foundation pit also includes an air-supported rain curtain (3), Velcro (4) and a steel rainwater collection trough (5). The upper end of the air-supported rain curtain (3) is connected to the outer periphery of the bottom end of the air-supported body (2) by heat fusion. The air-supported rain curtain (3) hangs down from the connection point of the air-supported body (2) to cover the connection area between the air-supported body (2) and the support crown beam (1). The steel rainwater collection trough (5) is fixed to the outer wall of the support crown beam (1) by air nails and is located directly below the lower end of the air membrane rain curtain (3). The lower end of the air membrane rain curtain (3) is detachably attached to and sealed to the inner wall of the steel rainwater collection trough (5) by the Velcro (4) so ​​as to guide the rainwater sliding down the air membrane rain curtain (3) into the steel rainwater collection trough (5).

2. The simple rainproof and drainage device for foundation pits using an air-supported membrane structure according to claim 1, characterized in that, The simple rainproof and drainage device for the foundation pit air membrane also includes a rainwater pipe (6) and a rainwater collection pool (9). The bottom of the steel rainwater collection trough (5) is connected to the rainwater collection pool (9) through the rainwater pipe (6).

3. A simple rainproof and drainage device for foundation pits using an air-supported membrane structure according to claim 2, characterized in that, The simple rainproof and drainage device for the foundation pit also includes a road (8) and a pumping and maintenance hole (7). The rainwater collection pool (9) is buried below the road (8), and the lower end of the pumping and maintenance hole (7) is connected to the rainwater collection pool (9).

4. A simple rainproof and drainage device for foundation pits using an air-supported membrane structure according to claim 2, characterized in that, A water collection funnel is installed every fifty meters on the rainwater pipe (6), and the water collection funnel is connected to the rainwater pipe (6).

5. A simple rainproof and drainage device for foundation pits using an air-supported membrane structure according to claim 1, characterized in that, The support cap beam (1) is connected to a support pile (11) below it.

6. A simple rain-draining device for an air-supported membrane structure in a foundation pit according to claim 5, characterized in that, The sidewall of the support pile (11) is anchored to the stratum outside the foundation pit by steel strand anchor cable (10).

7. A simple rainproof and drainage device for foundation pits using an air-supported membrane structure according to claim 1, characterized in that, The internal space of the air-supported membrane body (2) contains the building (12) to be constructed.

8. A simple rain-drainage device for an air-supported membrane structure in a foundation pit according to claim 7, characterized in that, The bottom of the building (12) to be constructed is fixedly connected to a raft slab (13).

9. A simple rainproof and drainage device for foundation pits using an air-supported membrane structure according to claim 1, characterized in that, The Velcro (4) includes a hook face and a loop face. The hook face is fixed to the inner wall of the steel rainwater collection trough (5), and the loop face is fixed to the lower end of the air film rain curtain (3).

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