Deep foundation pit seepage-proofing and leaking stoppage device for subway construction

Abstract

The utility model discloses a deep foundation pit anti-seepage leaking stoppage device for subway construction, which belongs to the technical field of deep foundation pit anti-seepage and comprises a stand column, a baffle and a foot margin, the upper surface of the foot margin is connected with the lower surface of the stand column, the outer surface of the stand column is connected with a first supporting seat, and the inner wall of the supporting seat is rotatably connected with a first supporting rod at a fixed point. Through cooperation of the first supporting rod, the second supporting rod and the threaded sleeve, the first supporting rod transmits supporting force to the stand column through the supporting base, the supporting plate provides supporting force for the second supporting rod, the supporting force of the second supporting rod is received through the threaded sleeve and transmitted to the first supporting rod, and therefore the supporting force of the first supporting rod is transmitted to the stand column through the supporting base. The supporting force is adjusted through rotation of the threaded sleeve, the stand column has higher supporting force, the baffle is prevented from inclining backwards through the supporting force provided by the first supporting rod and the second supporting rod behind the baffle, and the baffle has higher stability.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-seepage of deep foundation pits, and particularly relates to an anti-seepage and plugging device for deep foundation pits in subway construction. Background Technique

[0002] A deep foundation pit refers to the earth excavation, support, and dewatering project of a foundation pit (trench) with an excavation depth exceeding 5 meters (including 5 meters). The deep foundation pit project is a comprehensive systematic project, mainly including the design and construction of the foundation pit support system and earth excavation. The foundation pit support system is a temporary structure, which prevents the foundation pit from seeping water and collapsing through the support system. After the completion of the underground project construction, the support system is no longer needed and is demolished. The design and construction of the support system and earth excavation of the foundation pit project are not only related to the engineering geology and hydrogeology conditions, but also related to the positions of adjacent buildings and underground pipelines of the foundation pit, the ability to resist deformation, and the surrounding site conditions, etc.

[0003] Due to the relatively deep excavation depth of the deep foundation pit, there are often problems of groundwater seepage. Most of the existing anti-seepage and plugging devices for deep foundation pits block the seepage position through baffles, set columns outside the plates for support, and set floor feet below the plates to penetrate into the ground to prevent movement. Although this kind of anti-seepage and plugging device for deep foundation pits is feasible, after the leakage is relatively serious, the increased internal pressure may cause the plate to tilt backward or collapse, losing the function of anti-seepage and plugging. To solve this technical problem, the utility model proposes an anti-seepage and plugging device for deep foundation pits in subway construction. Content of the Utility Model

[0004] The main purpose of the utility model is to provide an anti-seepage and plugging device for deep foundation pits in subway construction, which can effectively solve the problems mentioned in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An anti-seepage and plugging device for deep foundation pits in subway construction, including columns, baffles, and floor feet. The upper surface of the floor feet is connected to the lower surface of the columns. A clamping groove is provided inside the columns. Both sides of the baffles are connected with retaining strips, and the outer surface of the retaining strips is in contact with the inner wall of the clamping groove. The outer surface of the columns is connected with a first support seat. The inner wall of the first support seat is fixedly connected with a first support rod in a rotational manner. The other end of the first support rod is threadedly connected with a threaded sleeve. The other end of the threaded sleeve is threadedly connected with a second support rod. The other end of the second support rod is fixedly connected with a support plate in a rotational manner.

[0007] Preferably, a plurality of inclined teeth are connected to the lower surface of the support plate, and the plurality of inclined teeth are arranged at equal distances.

[0008] Preferably, a force - adding rod is in sliding contact with the inner side of the threaded sleeve, and positioning blocks are connected to both ends of the force - adding rod.

[0009] Preferably, a lead screw is threadedly connected to the inner side of the column, and a push plate is rotatably connected to the fixed point at one end of the lead screw located inside the column.

[0010] Preferably, a guide rod is slidably connected to the inner side of the push plate, a sealing gasket is connected to one end of the guide rod, and a limit block is connected to the other end of the guide rod.

[0011] Preferably, a spring is sleeved on the outside of the guide rod, one end of the spring is connected to one side of the push plate, and the other end of the spring is connected to one side of the sealing gasket.

[0012] Preferably, a first lifting lug is connected to the upper surface of the column, and two second lifting lugs are connected to the upper surface of the baffle, and the two second lifting lugs are symmetrical.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, through the cooperation between the first support rod, the second support rod and the threaded sleeve, the first support rod transmits the support force to the column through the support seat, provides support force for the second support rod through the support plate, receives the support force of the second support rod through the threaded sleeve and transmits it to the first support rod, and adjusts the support strength by rotating the threaded sleeve, making the column more supportive. Through the support force provided by the first support rod and the second support rod behind the baffle, the baffle is prevented from tilting backward, making the baffle more stable.

[0015] In the utility model, through the cooperation between the lead screw, the push plate and the sealing gasket, the rotation of the lead screw provides power for the movement of the push plate. After the push plate moves, it squeezes the sealing gasket, causing the sealing gasket to deform and fill the gap between the retaining bar and the card slot, blocking the water seeping out from flowing out through the gap between the retaining bar and the card slot, and improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an anti - seepage and leakage - plugging device for deep foundation pits in subway construction according to the utility model;

[0017] Figure 2 It is a schematic diagram of the main structure in an anti - seepage and leakage - plugging device for deep foundation pits in subway construction according to the utility model;

[0018] Figure 3 It is a schematic diagram of the overall three - dimensional structure of the first lifting lug in an anti - seepage and leakage - plugging device for deep foundation pits in subway construction according to the utility model;

[0019] Figure 4Schematic cross-sectional structure diagram of the push plate and sealing gasket in a deep foundation pit anti-seepage and leakage plugging device for subway construction according to the present utility model;

[0020] Figure 5 Overall three-dimensional structure diagram of the baffle in a deep foundation pit anti-seepage and leakage plugging device for subway construction according to the present utility model.

[0021] In the figure: 1, column; 2, baffle; 3, anchor; 4, card slot; 5, retaining strip; 6, support seat; 7, first support rod; 8, threaded sleeve; 9, second support rod; 10, support plate; 11, helical teeth; 12, force-applying rod; 13, positioning block; 14, lead screw; 15, push plate; 16, guide rod; 17, sealing gasket; 18, limit block; 19, spring; 20, first lifting lug; 21, second lifting lug. Specific embodiments

[0022] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further elaborated below in conjunction with specific embodiments.

[0023] As Figures 1-5 shown, a deep foundation pit anti-seepage and leakage plugging device for subway construction includes a column 1, a baffle 2 and an anchor 3. The upper surface of the anchor 3 is connected to the lower surface of the column 1. By inserting the anchor 3 into the ground, the bottom of the column 1 has stability. When in use, two columns 1 are in a group, and the baffle 2 is restricted inside by the two columns 1. A card slot 4 is opened on the inner side of the column 1. Retaining strips 5 are connected to both sides of the baffle 2. The outer surface of the retaining strip 5 is in contact with the inner wall of the card slot 4. The movement position of the baffle 2 is blocked by the card slot 4 to increase stability.

[0024] A support seat 6 is connected to the outer surface of the column 1. The fixed point of the inner wall of the first support seat 6 is rotatably connected to a first support rod 7. The other end of the first support rod 7 is threadedly connected to a threaded sleeve 8. The other end of the threaded sleeve 8 is threadedly connected to a second support rod 9. The other end of the second support rod 9 is rotatably connected to a support plate 10 at a fixed point. The column 1 receives a supporting force through the support seat 6. The support plate 10 contacts the ground to provide a supporting force for the second support rod 9. A force-applying rod 12 is in sliding contact with the inner side of the threaded sleeve 8. Positioning blocks 13 are connected to both ends of the force-applying rod 12. The threaded sleeve 8 is rotated conveniently through the force-applying rod 12. The positioning block 13 can prevent the force-applying rod 12 from disengaging from contact with the threaded sleeve 8. By rotating the threaded sleeve 8, the first support rod 7 and the second support rod 9 are simultaneously pushed to move outward and contract inward, adjusting the supporting force and angle for the support plate 10.

[0025] A plurality of helical teeth 11 are connected to the lower surface of the support plate 10, and the plurality of helical teeth 11 are arranged at equal distances. When the support plate 10 contacts the ground, the helical teeth 11 penetrate into the ground to increase the resistance, improve the stability of the support plate 10, and enable the support plate 10 to more stably provide a supporting force for the first support rod 7 and the second support rod 9.

[0026] A lead screw 14 is threadedly connected to the inner side of the column 1. One end of the lead screw 14 located inside the column 1 is rotatably connected to a push plate 15. The push plate 15 is moved by using the lead screw 14 as a power source. After the push plate 15 is moved, the sealing gasket 17 is squeezed, causing the sealing gasket 17 to deform and fill the gap between the retaining strip 5 and the clamping groove 4, preventing the leaked water from flowing out through the gap between the retaining strip 5 and the clamping groove 4. There is a groove inside the sealing gasket 17, and the push plate 15 has a convex shape. When the push plate 15 squeezes the sealing gasket 17, the sealing gasket 17 will expand outwards, which can better achieve the sealing effect. A guide rod 16 is slidably connected to the inner side of the push plate 15. One end of the guide rod 16 is connected to the sealing gasket 17. The sealing gasket 17 is made of rubber, and rubber has good ductility and corrosion resistance. The other end of the guide rod 16 is connected to a limit block 18. The stability of the sealing gasket 17 is maintained through the guide rod 16, and the moving distance of the guide rod 16 is limited by the limit block 18 to prevent the guide rod 16 from disengaging from contact with the push plate 15 and losing the function of supporting the sealing gasket 17. A spring 19 is sleeved outside the guide rod 16. One end of the spring 19 is connected to one side of the push plate 15, and the other end of the spring 19 is connected to one side of the sealing gasket 17. The spring 19 is used to push the sealing gasket 17 to disengage from contact with the push plate 15 to prevent the sealing gasket 17 from contacting the push plate 15. A groove is provided at the position of the push plate 15 where the spring 19 is located, and the groove can accommodate the spring 19 to prevent the spring 19 from blocking the push plate 15.

[0027] A first lifting lug 20 is connected to the upper surface of the column 1, and two second lifting lugs 21 are connected to the upper surface of the baffle 2, and the two second lifting lugs 21 are symmetrical. The first lifting lug 20 facilitates the hoisting operation of the column 1, and the second lifting lugs 21 are used for the hoisting operation of the baffle 2. The width of the baffle 2 is relatively wide, and better stability can be maintained through the two second lifting lugs 21.

[0028] It should be noted that in actual use of the device, first, the column 1 is hoisted to the water seepage position, then the column 1 is pushed to drive the anchor 3 deep into the ground. Subsequently, the baffle 2 is hoisted, the position of the retaining strip 5 is aligned with the card slot 4, and then the baffle 2 is lowered. The support plate 10 is placed behind the baffle 2. Then, pressure is applied to the baffle 2 to drive the helical gear 11 deep into the ground. By rotating the threaded sleeve 8 through the force applying rod 12, the threaded sleeve 8 pushes the first support rod 7 and the second support rod 9 to move positions. When the first support rod 7 and the second support rod 9 support the baffle 2, they have an inclined angle. When the lead screw 14 is rotated to push the push plate 15 to move, the spring 19 is compressed when the push plate 15 moves. Then, the push plate 15 contacts the gasket 17, forming pressure on the gasket 17, compressing the gasket 17 to deform. The deformed gasket 17 fills the gap between the retaining strip 5 and the card slot 4.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-seepage and leakage plugging device for deep foundation pits in subway construction, comprising a column (1), a baffle (2) and a floor anchor (3), characterized in that: The upper surface of the floor feet (3) is connected to the lower surface of the column (1). A clamping groove (4) is formed inside the column (1). Both sides of the baffle (2) are connected with retaining strips (5). The outer surface of the retaining strip (5) is in contact with the inner wall of the clamping groove (4). The outer surface of the column (1) is connected with a first support seat (6). The inner wall of the first support seat (6) is rotatably connected to a first support rod (7) at a fixed point. The other end of the first support rod (7) is threadedly connected with a threaded sleeve (8). The other end of the threaded sleeve (8) is threadedly connected with a second support rod (9). The other end of the second support rod (9) is rotatably connected to a support plate (10) at a fixed point.

2. The impermeable plugging device for deep foundation pit in subway construction according to claim 1, wherein: The lower surface of the support plate (10) is connected with a plurality of inclined teeth (11), and the plurality of inclined teeth (11) are arranged at equal intervals.

3. A deep foundation pit anti-seepage and leakage plugging device for subway construction according to claim 1, characterized in that: The inner side of the threaded sleeve (8) is in sliding contact with a force applying rod (12). Both ends of the force applying rod (12) are connected with positioning blocks (13).

4. A deep foundation pit anti-seepage and leakage plugging device for subway construction according to claim 1, characterized in that: A lead screw (14) is threadedly connected to the inside of the column (1). One end of the lead screw (14) located inside the column (1) is rotatably connected to a push plate (15) at a fixed point.

5. The impervious plugging device for deep foundation pit in subway construction according to claim 4, characterized in that: The inner side of the push plate (15) is slidably connected with a guide rod (16). One end of the guide rod (16) is connected with a sealing gasket (17). The other end of the guide rod (16) is connected with a limiting block (18).

6. The anti-seepage and leakage plugging device for deep foundation pits in subway construction according to claim 5, wherein: A spring (19) is sleeved outside the guide rod (16). One end of the spring (19) is connected to one side of the push plate (15), and the other end of the spring (19) is connected to one side of the sealing gasket (17).

7. The impervious plugging device for deep foundation pits in subway construction according to claim 1, wherein: The upper surface of the column (1) is connected with a first lifting lug (20). The upper surface of the baffle (2) is connected with two second lifting lugs (21), and the two second lifting lugs (21) are symmetrical to each other.

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