Air film rain prevention and drainage device for foundation pit

Abstract

The invention discloses a foundation pit air film rain prevention and drainage device which comprises a construction area arranged on one side of a road, the lower end of the road is provided with a foundation, and the device further comprises a rain prevention unit which comprises an air film body arranged above the construction area and used for keeping off rain of the construction area, the rainwater collecting pool is arranged in the foundation and used for collecting rainwater sliding from the gas film body; the drainage unit comprises a water guide assembly used for guiding out rainwater sliding off from the gas film body and a filtering assembly arranged between the water guide assembly and the rainwater collecting pool and used for filtering the rainwater before entering the rainwater collecting pool. Rainwater falls into the gas film body and then slides into the water guide assembly along the gas film body, the water guide assembly guides the rainwater into the filtering assembly to be filtered, and then the rainwater enters the rainwater collecting pool to be collected, so that the rainwater is prevented from directly sliding into the gas film foundation, and it is ensured that the gas film foundation is not corroded by the rainwater.

Description

Technical Field

[0001] This invention relates to the field of air-supported membrane drainage technology for foundation pits, specifically to an air-supported membrane rainproof and drainage device for foundation pits. Background Technology

[0002] In the construction process of building engineering, foundation pit construction is an important preliminary stage. Its construction quality and safety directly affect the progress of subsequent projects. Foundation pit construction usually has a long cycle and is mostly carried out in the open air, making it susceptible to the impact of severe weather. Rainfall is particularly harmful to foundation pit construction. Rainfall can cause water to accumulate in the foundation pit, which not only affects the construction progress but may also reduce the stability of the foundation pit slope soil, causing slope instability, collapse and other safety accidents, resulting in significant economic losses and casualties. Existing rain protection measures for foundation pits mainly include building rain shelters, laying rainproof cloth, and setting up drainage ditches. Among these, when using air-supported membrane structures for foundation pit and support operations, a trench is dug in the surrounding area for the installation of the air-supported membrane. During the rainy season, the trench will be filled with rainwater, causing varying degrees of corrosion to the air-supported membrane foundation, studs, and the inside of the trench. The accumulated rainwater will also put pressure on the air-supported membrane and the support frame, affecting the service life of the air-supported membrane and on-site safety. The delays and maintenance caused by pumping water are also a major problem.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0004] The purpose of this invention is to provide a rainproof and drainage device for an air-supported membrane structure in foundation pits, in order to solve the problems mentioned in the background art where, during the rainy season, the trenches in the foundation pit and support stages are filled with rainwater, causing varying degrees of corrosion to the air-supported membrane foundation, studs, and the interior of the trench. The accumulated rainwater also puts pressure on the air-supported membrane and the support frame, affecting the service life of the air-supported membrane and on-site safety, and causing delays in construction and difficulties in maintenance due to water pumping.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A rainwater drainage and waterproofing device for a foundation pit includes a construction area located on one side of a road, the lower end of which is provided with a foundation, and further includes: The rainproof unit includes an air-supported membrane body installed above the construction area to protect the construction area from rain, and a rainwater collection tank installed inside the foundation to collect rainwater that slides off the air-supported membrane body. The drainage unit includes a water guiding component for draining rainwater that slides off the air film body, and a filter component disposed between the water guiding component and the rainwater collection tank for filtering rainwater before it enters the rainwater collection tank.

[0006] Furthermore, the water guiding component includes: A connecting strip is fixedly connected to the outside of the air film body; The rain curtain is connected at one end to the lower end of the connecting strip via Velcro. A fixing rod is fixedly connected to one side of the road and located on one side of the air film body; the other end of the rain curtain is connected to the fixing rod by Velcro. A steel rainwater collection trough is inserted into the foundation and located between the rain curtain and the foundation, for guiding rainwater flowing out of the rain curtain into the interior of the rainwater collection tank.

[0007] Furthermore, the steel rainwater collection trough is provided in multiple sets at equal intervals; A groove is provided between adjacent steel rainwater collection tanks to guide the rainwater discharged between the adjacent steel rainwater collection tanks into the steel rainwater collection tanks.

[0008] Furthermore, the filtering component includes: A filtration mechanism is installed between the rainwater collection tank and the steel rainwater collection trough to filter the incoming rainwater and collect the filtered impurities. A water guide pipe is provided between the steel rainwater collection trough and the rainwater collection tank. The pre-filter mechanism, located at the lower end of the filter mechanism and inside the foundation, is used to filter rainwater before it enters the rainwater collection tank when the filter mechanism is removed for cleaning.

[0009] Furthermore, the filtration mechanism includes: A first filter screen is disposed inside the foundation. The foundation has a receiving groove on the outside for accommodating the first filter screen. The first filter screen has multiple first filter holes that penetrate through it for filtering impurities in the rainwater. A pull plate is fixedly connected to one side of the upper part of the first filter screen and is used to pull out the first filter screen; A collection frame is located on one side of the lower part of the first filter screen and below the first filter hole, for containing impurities filtered by the first filter hole.

[0010] Furthermore, a baffle is provided on one side of the collection frame to block impurities inside the collection frame; The lower end of the baffle is hinged to the collection frame via a hinge shaft, which is used to rotate and open the baffle.

[0011] Furthermore, a locking block is fixedly connected to one side of the baffle; The collection frame has a card slot on one side for accommodating card blocks; The upper end of the card slot is provided with a second limiting groove; The upper end of the collection frame is connected to a locking pin that extends into the second limiting groove to lock the locking block.

[0012] Furthermore, the pre-blocking mechanism includes: The second filter screen is fixedly connected to the lower end of the collection frame near the side. The second filter holes are located inside the second filter screen and are used to filter rainwater in the water pipe when the collection frame is removed for cleaning. A limiting block, fixedly connected to the lower end of the second filter screen, is used to limit the first filter screen, and is located inside the foundation and connected to a first limiting groove for guiding the movement of the limiting block.

[0013] Furthermore, the upper inner wall of the receiving groove is provided with a limiting protrusion; The upper opening of the receiving tank is fitted with a cover plate for sealing the filter assembly.

[0014] Furthermore, the rainproof unit also includes: A support crown beam is located at the lower end of the air-supported membrane body; Locking bolts, threadedly connected to the upper part of the support crown beam, are used to lock the lower part of the air film body to the support crown beam; Support piles are installed at the lower end of the support cap beam to support the support cap beam.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention places a water-guiding component on one side of the bottom of the air-supported membrane body. When it rains, rainwater falls onto the air-supported membrane body and slides down into the water-guiding component. The water-guiding component then guides the rainwater to the filter component for filtration, and finally into the rainwater collection tank for collection. This prevents rainwater from sliding directly onto the air-supported membrane foundation and ensures that the air-supported membrane foundation is not corroded by rainwater. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention in Figure 1 Enlarged view of point A in the middle; Figure 3 For the present invention in Figure 1 Enlarged view of point B in the middle; Figure 4 This is a schematic diagram of the water guiding component structure of the present invention; Figure 5 This diagram illustrates the cooperation relationship between the filtration mechanism and the pre-blocking mechanism of the present invention. Figure 6 For the present invention in Figure 5 Enlarged view of point C in the middle; Figure 7 This is a diagram showing the locking state of the card block of the present invention when it is locked by the card shaft.

[0017] Attached reference numerals: 100, Construction area; 101, Road; 102, Rainwater collection tank; 1021, Pumping and maintenance hole; 103, Foundation; 1031, Water pipe; 1032, Receiving tank; 1033, First limiting groove; 1, Rainproof unit; 11, Air membrane body; 12, Support pile; 13, Raft; 14, Support cap beam; 141, Locking bolt; 2, Drainage unit; 21, Water guiding component; 211, Connecting strip; 212, Rain curtain; 213, Fixing rod; 214, Steel rainwater collection trough; 2 141. Groove; 22. Filter assembly; 221. Limiting protrusion; 222. Cover plate; 223. Filtering mechanism; 2231. First filter screen; 22311. First filter hole; 2232. Pull plate; 2233. Collection frame; 22331. Slot; 2234. Baffle; 22341. Hinge shaft; 22342. Locking block; 22343. Locking shaft; 22344. Second limiting groove; 224. Pre-blocking mechanism; 2241. Second filter screen; 2242. Second filter hole; 2243. Limiting block. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-7 The present invention provides a technical solution: A rainproof and drainage device for an excavation pit includes a construction area 100 located on one side of a road 101, wherein a foundation 103 is provided at the lower end of the road 101, and further includes: The rainproof unit 1 includes an air-supported membrane body 11 installed above the construction area 100 to protect the construction area 100 from rain, and a rainwater collection tank 102 installed inside the foundation 103 to collect rainwater that slides off the air-supported membrane body 11. The drainage unit 2 includes a water guiding component 21 for guiding rainwater that slides off the air film body 11, and a filter component 22 disposed between the water guiding component 21 and the rainwater collection tank 102 for filtering rainwater before it enters the rainwater collection tank 102.

[0020] It should be noted that by placing the water guiding component 21 on one side of the bottom of the air membrane body 11, when it rains, rainwater falls onto the air membrane body 11 and slides down along the air membrane body 11 into the water guiding component 21. The water guiding component 21 guides the rainwater to the filter component 22 for filtration, and then the rainwater enters the rainwater collection tank 102 for collection. This prevents rainwater from sliding directly onto the air membrane foundation and ensures that the air membrane foundation will not be corroded by rainwater.

[0021] As an improvement, such as Figure 1-2 As shown, the water guiding component 21 includes: Connecting strip 211 is fixedly connected to the outside of the air film body 11; The rain curtain 212 is connected at one end to the lower end of the connecting strip 211 via Velcro; The fixing rod 213 is fixedly connected to one side of the road 101 and located on one side of the air film body 11. The other end of the rain curtain 212 is connected to the fixing rod 213 by Velcro. A steel rainwater collection trough 214 is inserted inside the foundation 103 and located between the rain curtain 212 and the foundation 103, and is used to guide the rainwater flowing out of the rain curtain 212 into the interior of the rainwater collection pool 102.

[0022] Furthermore, such as Figure 4 As shown, the steel rainwater collection trough 214 is provided with multiple sets at equal intervals; A groove 2141 is provided between adjacent steel rainwater collection troughs 214 to guide the rainwater discharged between the rain curtain 212 into the steel rainwater collection trough 214.

[0023] Furthermore, such as Figure 5-7 As shown, the filtering component 22 includes: A filtration mechanism 223 is disposed between the rainwater collection pool 102 and the steel rainwater collection trough 214, for filtering the incoming rainwater and collecting the filtered impurities. A water guide pipe 1031 is provided between the steel rainwater collection trough 214 and the rainwater collection pool 102. The pre-filter mechanism 224 is located at the lower end of the filter mechanism 223 and inside the foundation 103, and is used to filter the rainwater before it enters the rainwater collection tank 102 when the filter mechanism 223 is removed for cleaning.

[0024] Among them, such as Figure 5 As shown, the filtration mechanism 223 includes: The first filter screen 2231 is disposed inside the foundation 103. The foundation 103 has a receiving groove 1032 on the outside for accommodating the first filter screen 2231. The first filter screen 2231 has a plurality of first filter holes 22311 through it for filtering impurities in rainwater. Pull plate 2232 is fixedly connected to one side of the upper part of the first filter screen 2231 and is used to pull out the first filter screen 2231; The collection frame 2233 is located on one side of the lower part of the first filter screen 2231 and below the first filter hole 22311, and is used to contain the impurities filtered by the first filter hole 22311.

[0025] As an improvement, such as Figure 5-7 As shown, a baffle 2234 is provided on one side of the collection frame 2233 to block impurities in the collection frame 2233; The lower end of the baffle 2234 is hinged to the collection frame 2233 via a hinge shaft 22341, which is used to rotate and open the baffle 2234.

[0026] Furthermore, such as Figure 7 As shown, a locking block 22342 is fixedly connected to one side of the baffle 2234; The collection frame 2233 is provided with a card slot 22331 on one side for accommodating the card block 22342; The upper end of the card slot 22331 is provided with a second limiting groove 22344; The upper end of the collection frame 2233 is connected to a locking shaft 22343 that extends into the second limiting groove 22344 for locking the locking block 22342.

[0027] Furthermore, such as Figure 3 , Figure 5 As shown, the pre-blocking mechanism 224 includes: The second filter screen 2241 is fixedly connected to the lower end of the collection frame 2233 near the side. The second filter hole 2242 is distributed inside the second filter screen 2241 and is used to filter the rainwater in the water pipe 1031 when the collection frame 2233 is removed for cleaning. The limiting block 2243 is fixedly connected to the lower end of the second filter screen 2241 and is used to limit the first filter screen 2231. It is located inside the foundation 103 and is connected to the first limiting groove 1033 used to guide the movement of the limiting block 2243.

[0028] The upper inner wall of the receiving groove 1032 is provided with a limiting protrusion 221; The upper opening of the receiving groove 1032 is fitted with a cover plate 222 for sealing the filter assembly 22.

[0029] In addition, such as Figure 1 As shown, the rainproof unit 1 further includes: The support crown beam 14 is located at the lower end of the air film body 11; Locking bolt 141 is threaded to the upper part of the support crown beam 14 and is used to lock the lower part of the air film body 11 to the support crown beam 14. Support piles 12 are provided at the lower end of the support cap beam 14 to support the support cap beam 14; The lower end of the construction area 100 is provided with a raft 13 for supporting the construction area 100.

[0030] It should be added that the upper end of the rainwater collection pool 102 is provided with a pumping inspection hole 1021, and the rainwater collection pool 102 is provided with a water pump for pumping water out of the rainwater collection pool 102 through the pumping inspection hole 1021. In addition, the distance between adjacent limiting protrusions 221 is greater than the width of the collection frame 2233, ensuring that the collection frame 2233 can be taken out from the receiving groove 1032.

[0031] It should be noted that: in the specific implementation process of this invention, such as Figure 1-2 As shown, after the air-supported membrane body 11 blocks the rainwater above the construction area 100, the rainwater flows along the air-supported membrane body 11 through the connecting strip 211, the rain curtain 212, the steel rainwater collection trough 214, the water pipe 1031, and the first filter hole 22311 before entering the rainwater collection pool 102, thus preventing the rainwater from corroding the air-supported membrane foundation. like Figure 1 , Figure 3 , Figure 5 As shown, when rainwater flows through the first filter hole 22311, the first filter hole 22311 filters the impurities in the rainwater. The remaining impurities after filtration accumulate in the collection frame 2233. When the impurities in the collection frame 2233 need to be discharged and cleaned, the cover plate 222 can be opened and the pull plate 2232 can be pulled upward. The pull plate 2232 drives the first filter screen 2231 and the collection frame 2233 to move upward to the outside of the receiving groove 1032. At this time, the locking shaft 22343 is pulled upward from the second limiting groove 22344, and the baffle 2234 is rotated around the hinge shaft 22341, so that one side of the collection frame 2233 is opened, and the impurities in the collection frame 2233 are discharged, completing the timely cleaning of the filter residue and preventing the filter residue from flowing directly into the rainwater collection pool 102 and accumulating into clumps, causing the subsequent rainwater collection pool 102 to be blocked. like Figure 5-7 As shown, after the filter residue is unloaded, the baffle 2234 is closed, and the first filter screen 2231 is placed into the receiving tank 1032 to continue the filtration process; like Figure 3 , Figure 5 As shown, during the process of extracting the first filter screen 2231 from the receiving tank 1032, the first filter screen 2231 drives the second filter screen 2241 to move upward along the first limiting groove 1033 via the collection frame 2233. The second filter screen 2241 drives the second filter hole 2242 to move from the first limiting groove 1033 into the water guide pipe 1031. This allows the second filter hole 2242 to filter the water flow in the water guide pipe 1031 instead of the first filter hole 22311 during the unloading of filter residue in the collection frame 2233, thus preventing impurities in the water flow in the water guide pipe 1031 from entering the rainwater collection tank 102 during the cleaning of the collection frame 2233.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rainproof and drainage device for an air-supported membrane structure in a foundation pit, comprising a construction area (100) located on one side of a road (101), wherein a foundation (103) is provided at the lower end of the road (101), characterized in that, Also includes: The rainproof unit (1) includes an air-supported membrane body (11) installed above the construction area (100) to protect the construction area (100) from rain, and a rainwater collection tank (102) installed inside the foundation (103) to collect rainwater that slides down from the air-supported membrane body (11). The drainage unit (2) includes a water guiding component (21) for guiding rainwater that slides off the air film body (11) and a filter component (22) disposed between the water guiding component (21) and the rainwater collection tank (102) for filtering rainwater before it enters the rainwater collection tank (102).

2. The air-supported membrane rainproofing and drainage device for foundation pits according to claim 1, characterized in that: The water guiding component (21) includes: A connecting strip (211) is fixedly connected to the outside of the air film body (11); The rain curtain (212) is connected at one end to the lower end of the connecting strip (211) via Velcro; A fixing rod (213) is fixedly connected to one side of the road (101) and located on one side of the air film body (11). The other end of the rain curtain (212) is connected to the fixing rod (213) by Velcro. A steel rainwater collection trough (214) is inserted inside the foundation (103) and located between the rain curtain (212) and the foundation (103) for guiding rainwater flowing out of the rain curtain (212) into the interior of the rainwater collection pool (102).

3. The air-supported membrane rainproofing and drainage device for foundation pits according to claim 2, characterized in that: The steel rainwater collection trough (214) is provided in multiple sets at equal intervals; A groove (2141) is provided between adjacent steel rainwater collection tanks (214) to guide the rainwater discharged by the rain curtain (212) between the adjacent steel rainwater collection tanks (214) into the steel rainwater collection tank (214).

4. A rainproof and drainage device for an air-supported membrane structure in a foundation pit according to claim 3, characterized in that: The filter assembly (22) includes: A filtration mechanism (223) is provided between the rainwater collection tank (102) and the steel rainwater collection trough (214) for filtering the incoming rainwater and collecting the filtered impurities. A water guide pipe (1031) is provided between the steel rainwater collection trough (214) and the rainwater collection tank (102). A pre-filter mechanism (224) is located at the lower end of the filter mechanism (223) and inside the foundation (103) for filtering rainwater before it enters the rainwater collection tank (102) when the filter mechanism (223) is removed for cleaning.

5. A rainproof and drainage device for an air-supported membrane structure in a foundation pit according to claim 4, characterized in that: The filtration mechanism (223) includes: The first filter screen (2231) is located inside the foundation (103). The foundation (103) has a receiving groove (1032) on the outside for accommodating the first filter screen (2231). The first filter screen (2231) has multiple first filter holes (22311) that penetrate through it for filtering impurities in rainwater. A pull plate (2232) is fixedly connected to one side of the upper part of the first filter screen (2231) and is used to pull out the first filter screen (2231); The collection frame (2233) is located on one side of the lower part of the first filter screen (2231) and below the first filter hole (22311), and is used to contain the impurities filtered by the first filter hole (22311).

6. A rainproof and drainage device for an air-supported membrane structure in a foundation pit according to claim 5, characterized in that: A baffle (2234) is provided on one side of the collection frame (2233) to block impurities in the collection frame (2233); The lower end of the baffle (2234) is hinged to the collection frame (2233) via a hinge shaft (22341) for rotating and opening the baffle (2234).

7. A rainproof and drainage device for an air-supported membrane structure in a foundation pit according to claim 6, characterized in that: A locking block (22342) is fixedly connected to one side of the baffle (2234); The collection frame (2233) has a card slot (22331) on one side for accommodating the card block (22342); The upper end of the card slot (22331) is provided with a second limiting groove (22344); The upper end of the collection frame (2233) is connected to a locking pin (22343) that extends into the second limiting groove (22344) for locking the locking block (22342).

8. A rainproof and drainage device for an air-supported membrane structure in a foundation pit according to claim 6, characterized in that: The pre-blocking mechanism (224) includes: The second filter (2241) is fixedly connected to the lower end of the collection frame (2233) near the side. The second filter hole (2242) is located inside the second filter screen (2241) and is used to filter the rainwater in the water pipe (1031) when the collection frame (2233) is removed for cleaning; A limiting block (2243) is fixedly connected to the lower end of the second filter (2241) for limiting the first filter (2231), inside the foundation (103) and with a first limiting groove (1033) for guiding the movement of the limiting block (2243).

9. A rainproof and drainage device for an air-supported membrane structure in a foundation pit according to claim 5, characterized in that: The upper inner wall of the receiving groove (1032) is provided with a limiting protrusion (221); The upper opening of the receiving groove (1032) is fitted with a cover plate (222) for sealing the filter assembly (22).

10. A rainproof and drainage device for an air-supported membrane structure in a foundation pit according to claim 1, characterized in that: The rainproof unit (1) also includes: The supporting crown beam (14) is located at the lower end of the air film body (11); Locking bolts (141) are threaded onto the upper part of the support crown beam (14) and are used to lock the lower part of the air film body (11) to the support crown beam (14); Support piles (12) are provided at the lower end of the support cap beam (14) to support the support cap beam (14).

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