A water-stopping and anti-seepage steel sheet pile support system

Abstract

The present invention discloses a new type of steel sheet pile support system for water stopping and anti-seepage, comprising two steel sheet piles and a grouting device storage device; the two steel sheet piles are both provided with a sleeve grip, the two sleeve grips are sleeved together, a latch space is formed between the two sleeve grips, and each sleeve grip is provided with a latch hole groove; the grouting device storage device is inserted in the latch space, the two ends of the grouting device storage device respectively pass through the two latch holes and extend outward, and a grouting device is arranged in the grouting device storage device. The present invention improves the sleeve grip form of the steel sheet pile, strengthens the sleeve grip strength between the steel sheet piles, and improves the service life. In the process of excavating the foundation pit, as the excavation depth decreases, the grouting device can be used to spray double liquid slurry around the sleeve grip position to strengthen the anti-seepage at the joint. When the bottom of the foundation pit is dug, the nozzle can be turned to spray double liquid slurry around the bottom of the pit to strengthen the water stopping effect on the bottom of the pit, greatly improving the seepage problem encountered in the process of steel sheet pile support, achieving multiple goals at one stroke.

Description

Technical Field

[0001] The invention relates to the field of support systems, and in particular to a water-stopping and anti-seepage steel sheet pile support system. Background Art

[0002] At present, steel sheet piles are often used as the main body of cofferdams in foundation pits and flood control facilities. At this time, the steel sheet piles are required to have a waterproof function in addition to the set strength. The existing steel sheet pile structure is simple and rough, and generally adopts a structural form of outer wall fitting or setting a simple overlapping stop. Although the existing sealing and water-stopping between pipe column piles or steel sheet piles adopts rubber strip sealing and water-stopping, inflatable bag sealing and water-stopping, plugging and sealing and water-stopping, etc., under the pressure and erosion of groundwater, the existing sealing structure will soon seep and leak, and even the mud in the outer soil layer of the pit foundation will flow into the pit foundation along the leakage gap, which is easy to induce pipe bursts. Deep foundation pits are mostly supported by Larsen steel sheet piles. However, compared with traditional masonry retaining walls, this support method is prone to leakage and cannot effectively reduce base seepage, resulting in a large amount of water accumulation at the bottom of the deep foundation pit, seriously affecting the construction work in the pit foundation.

[0003] Specifically, the prior art has the following defects:

[0004] ① During the use of steel sheet piles, the connection tightness between adjacent steel sheet piles is not good, and as the use time increases, the steel sheet piles age and the grip becomes loose.

[0005] ② When the foundation pit surrounded by sheet piles adopts self-seepage prevention of the wall, the anti-seepage grade of the sheet pile retaining wall should not be less than P6. Due to the presence of the steel sheet pile sleeve, the water-stopping performance is poor, so a reliable anti-seepage and water-stopping structure must be set at the joints of the steel plates.

[0006] ③ Most of the existing steel sheet piles rely on locking structures for connection. Although some locking structures claim to have waterproof functions, as far as the applicant knows, due to the influence of changes in steel sheet piles and assembly accuracy, the waterproof function is not high, water seepage often occurs, and the sealing effect cannot be achieved.

[0007] ④ The existing steel sheet pile support cannot meet the needs of grouting for anti-seepage while excavating.

[0008] ⑤The problem of water seepage at the base of foundation pit with existing steel sheet pile support has not been effectively solved.

[0009] Therefore, in order to solve this problem, it is necessary to develop a steel sheet pile support method that has good water-stopping and anti-seepage effects and can effectively reduce base seepage. This is the key to solving the above technical problems. Summary of the invention

[0010] In view of this, the present invention aims to solve the deficiencies in the prior art, and its main purpose is to provide a water-stopping and anti-seepage steel sheet pile support system, which can effectively solve the problem of aging and loosening of the steel sheet pile sleeve after long-term use, solves the water-stopping and anti-seepage problem in the support process, and achieves an anti-seepage effect through double-liquid grouting injection; at the same time, it can effectively reduce the phenomenon of water seepage at the bottom of the foundation pit. A soil pressure balance sensor is provided on the top of the grouting device, and grouting will not start when there is no excavation, but will start when excavation begins, with good controllability.

[0011] To achieve the above purpose, the present invention adopts the following technical solutions:

[0012] A water-stopping and anti-seepage steel sheet pile support system comprises two steel sheet piles and a grouting device storage device; the two steel sheet piles each have a sleeve grip portion, the two sleeve grip portions are sleeved together, a latch space is formed between the two sleeve grip portions, each sleeve grip portion is provided with a latch hole groove, the two latch hole grooves are respectively connected to the two ends of the latch space; the grouting device storage device is inserted in the latch space, the two ends of the grouting device storage device respectively pass through the two latch hole grooves to extend outward, and a grouting device is arranged in the grouting device storage device.

[0013] Preferably, the grouting device storage device passes through the latch space at an angle of 45° and is firmly stuck in the latch hole groove.

[0014] Preferably, the grouting device storage device is a square body, which includes a shell and a baffle; a slide groove is provided in the shell, and the baffle is openably and closably arranged on the shell through a door axis and covers the opening of the slide groove, and the aforementioned grouting device is slidably arranged in the slide groove.

[0015] Preferably, the grouting device includes a shell, a grouting sensor, a pressure sensor, a push rod, a compression spring, a grouting nozzle and a stirring paddle; the bottom of the shell has a bottom plate that can move up and down, and the shell is provided with a double-liquid stirring tank, a water glass storage tank and a cement storage tank, the water glass storage tank and the cement storage tank are both located below the double-liquid stirring tank and are connected to the double-liquid stirring tank; the grouting sensor is arranged on the bottom surface of the bottom plate; the pressure sensor is arranged on the bottom surface of the grouting sensor; the push rod is arranged in the shell, the lower end of the push rod is against the bottom plate, and the upper end of the push rod has two push parts, and the two push parts extend into the water glass storage tank and the cement storage tank respectively; the compression spring is arranged in the shell and prompts the push rod to move downward; the grouting nozzle is arranged in the upper end opening of the shell, and a grouting hole is opened on the grouting nozzle, and the grouting hole is connected to the double-liquid stirring tank; the stirring paddle is arranged at the bottom of the grouting nozzle and is located in the double-liquid stirring tank.

[0016] Preferably, cam sliders are provided on both side surfaces of the housing, and the cam sliders are slidably matched with the slide grooves.

[0017] Preferably, the inner wall of the shell is provided with two rotating chutes, and the two sides of the grouting nozzle are installed in the two rotating chutes.

[0018] Preferably, the shell is a square structure.

[0019] Preferably, the water glass storage tank and the cement storage tank are radially symmetrically arranged, and the compression spring is located between the water glass storage tank and the cement storage tank.

[0020] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0021] The present invention improves the gripping form of steel sheet piles, strengthens the gripping strength between steel sheet piles, and improves service life. In the process of excavating foundation pits, as the excavation depth decreases, a grouting device can be used to spray double-liquid slurry around the gripping position to strengthen the anti-seepage at the joints. When the bottom of the foundation pit is dug, the nozzle can be turned to spray double-liquid slurry around the bottom of the pit to strengthen the water-stopping effect on the bottom of the pit, thereby greatly improving the water seepage problem encountered in the process of steel sheet pile support, achieving multiple goals at one stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a top view of a preferred embodiment of the present invention;

[0023] Figure 2 yes Figure 1 A partial assembly perspective view of

[0024] Figure 3 It is a three-dimensional diagram of a grouting device storage device in a preferred embodiment of the present invention;

[0025] Figure 4 It is a partially cutaway stereoscopic view of a grouting device storage device in a preferred embodiment of the present invention;

[0026] Figure 5 is a cross-sectional view of a grouting device in a preferred embodiment of the present invention;

[0027] Figure 6 It is a first partial stereoscopic view of a grouting device in a preferred embodiment of the present invention;

[0028] Figure 7 It is a second partial stereoscopic view of the grouting device in the preferred embodiment of the present invention;

[0029] Figure 8 It is a third partial stereoscopic view of the grouting device in the preferred embodiment of the present invention.

[0030] Description of the accompanying drawings:

[0031] 10. Steel sheet pile 11. Grip

[0032] 101. Pin space 102. Pin hole slot

[0033] 20. Grouting device storage device 21. Shell

[0034] 22. Baffle 23. Door axis

[0035] 201, chute 30, grouting device

[0036] 31. Shell 311. Bottom plate

[0037] 312, cam slider 313, rotary slide

[0038] 32. Grouting sensor 33. Pressure sensor

[0039] 34. Push rod 341. Pushing part

[0040] 35. Compression spring 36. Grouting nozzle

[0041] 361, grouting hole 37, stirring paddle

[0042] 301. Double liquid stirring tank 302. Water glass storage tank

[0043] 303. Cement storage tank DETAILED DESCRIPTION

[0044] Please refer to Figures 1 to 8 As shown, it shows the specific structure of a preferred embodiment of the present invention, including two steel sheet piles 10 and a grouting device storage device 20.

[0045] The two steel sheet piles 10 each have a gripping portion 11, which are gripped together to form a latch space 101. Each gripping portion 11 is provided with a latch hole 102, and the two latch holes 102 are respectively connected to the two ends of the latch space 101.

[0046] The grouting device storage device 20 is inserted into the latch space 101, and the two ends of the grouting device storage device 20 extend outward through the two latch holes 102 to reinforce the sleeve grip structure, and the grouting device storage device 20 is provided with a grouting device 30. In this embodiment, the grouting device storage device 20 passes through the latch space 101 at an angle of 45° and is firmly stuck in the latch hole 102. In this way, the sleeve grip will not loosen under any circumstances without taking out the grouting device storage device 20, and the steel sheet piles 10 will not deviate up and down. Specifically, the grouting device storage device 20 is a square body, which includes a shell 21 and a baffle 22; the shell 21 has a slide groove 201, and the baffle 22 can be opened and closed on the shell 21 through a door axis 23 and covers the opening of the slide groove 201. There are two baffles 2 symmetrically arranged. During the jet grouting process, the external soil of the grouting device storage device 20 can be pushed away with the help of the pushing device at the rear of the grouting device 30 to complete the grouting and achieve a water-stopping and anti-seepage effect. The aforementioned grouting device 30 is slidably arranged in the slide groove 201.

[0047] Specifically, the grouting device 30 includes a housing 31, a grouting sensor 32, a pressure sensor 33, a push rod 34, a compression spring 35, a grouting nozzle 36 and a stirring paddle 37; the bottom of the housing 31 has a bottom plate 311 that can move up and down, and the housing 31 has a double liquid stirring tank 301, a water glass storage tank 302 and a cement storage tank 303, and the water glass storage tank 302 and the cement storage tank 303 are both located below the double liquid stirring tank 301 and are connected to the double liquid stirring tank 301; the grouting sensor 32 is arranged on the bottom surface of the bottom plate 311; the pressure sensor 33 is arranged on the grouting sensor The push rod 34 is arranged in the housing 31, the lower end of the push rod 34 is against the bottom plate 311, and the upper end of the push rod 34 has two push parts 341, which extend into the water glass storage tank 302 and the cement storage tank 303 respectively; the compression spring 35 is arranged in the housing 31 and prompts the push rod 34 to move downward; the grouting nozzle 36 is arranged in the upper end opening of the housing 31, and the grouting nozzle 36 is provided with a grouting hole 361, which is connected to the double liquid stirring tank 301; the stirring paddle 37 is arranged at the bottom of the grouting nozzle 36 and is located in the double liquid stirring tank 301. In this embodiment, the housing 31 is a square body structure, and the two side surfaces of the housing 31 are provided with cam sliders 312, and the cam sliders 312 are slidably matched with the slide groove 201. The inner wall of the housing 31 is provided with two rotating chutes 313, and the two sides of the grouting nozzle 36 are installed in the two rotating chutes 313. In addition, the water glass storage tank 302 and the cement storage tank 303 are radially symmetrically arranged, and the compression spring 35 is located between the water glass storage tank 302 and the cement storage tank 303.

[0048] The working principle of this embodiment is described in detail as follows:

[0049] During the excavation of the foundation pit, there is soil on the outside of the foundation pit, and the soil on the inside of the foundation pit is dug away little by little. The pressure sensor 33 at the bottom of the grouting device 30 can transmit the signal of the imbalance of the internal and external pressures to the grouting sensor 32. At this time, the grouting device 30 begins to slide downward along the slide 201. At the same time, the grouting sensor 32 transmits the pushing pressure to the bottom plate 311, and the bottom plate 311 then transmits the pressure to the push rod 34 and the compression spring 35. Under this pressure, the two pushing parts 341 of the push rod 34 respectively squeeze the water glass stored in the water glass storage tank 302 and the cement stored in the cement storage tank 303 into the double liquid stirring tank 301. When the push rod 34 is pushed to the limit, the push rod 34 no longer works, because the push rod 34 will not squeeze the double liquid stirring tank 301 even if it is pushed to the limit. The push rod 34 is responsible for squeezing the water glass and cement into the double liquid stirring tank 301. The water glass and cement are evenly stirred in the double liquid stirring tank 301 by the stirring paddle 37 for standby use. At this time, the compression spring 35 is stressed, driving the bottom of the entire grouting device 30. Under the thrust of the compression spring 35, the grouting nozzle 36 pushes the baffle 22 open. The baffle 22 is used to block the external soil and push the soil away to provide grouting space. At the same time, as the thrust of the compression spring 35 increases further, the double liquid stirring tank 301 containing the stirred double liquid begins to be squeezed. The stirred double liquid is squeezed from the double liquid stirring tank 301 to the grouting nozzle 36 and sprayed out through the grouting hole 361 to complete the grouting.

[0050] When the grouting machine 30 continues to grout along the slide 201 and reaches the bottom, the grouting sensor 32 at the bottom of the grouting machine 30 can transmit the signal that the grouting machine 30 will no longer slide down to the rotating slide 313. The rotating slide 313 will control the grouting machine 30 to complete a 90° clockwise downward process. During this process, the grouting nozzle 36 will be pushed outward under the action of the compression spring 35 and complete the bottom grouting.

[0051] The design focus of the present invention is: the present invention improves the sleeve grip form of the steel sheet piles, strengthens the sleeve grip strength between the steel sheet piles, and improves the service life. In the process of excavating the foundation pit, as the excavation depth decreases, the grouting device can be used to spray double-liquid slurry around the sleeve grip position to strengthen the anti-seepage at the joints. When the bottom of the foundation pit is dug, the nozzle can be turned to spray double-liquid slurry around the bottom of the pit to strengthen the water-stopping effect on the bottom of the pit, which greatly improves the water seepage problem encountered in the process of steel sheet pile support, achieving multiple goals at one stroke.

[0052] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A water-stopping and anti-seepage steel sheet pile support system, characterized by: The invention comprises two steel sheet piles and a grouting device storage device; the two steel sheet piles are each provided with a sleeve gripping part, the two sleeve gripping parts are sleeved together, a latch space is formed between the two sleeve gripping parts, each sleeve gripping part is provided with a latch hole groove, the two latch hole grooves are respectively connected with the two ends of the latch space; the grouting device storage device is inserted into the latch space, the two ends of the grouting device storage device respectively extend outward through the two latch holes grooves, and a grouting device is arranged in the grouting device storage device; the grouting device storage device is a square body, which comprises a shell and a baffle; a slide groove is arranged in the shell, the baffle can be opened and closed on the shell through a door shaft and covers the opening of the slide groove, and the aforementioned grouting device is slidably arranged in the slide groove; the grouting device comprises a shell, a grouting sensor, a pressure sensor, a push rod, a compression spring, a grouting nozzle and a stirring paddle; the bottom of the shell is provided with a bottom plate which can be moved up and down, and the shell is provided with a double-liquid stirring tank, a water glass storage tank and a cement storage tank, and the water glass storage tank and the cement storage tank are both located below the double-liquid stirring tank and are both connected to the double-liquid stirring tank; the grouting sensor is arranged on the bottom surface of the bottom plate; the pressure sensor is arranged on the bottom surface of the grouting sensor; the push rod is arranged in the shell, the lower end of the push rod is against the bottom plate, and the upper end of the push rod has two push parts, and the two push parts extend into the water glass storage tank and the cement storage tank respectively; the compression spring is arranged in the shell and prompts the push rod to move downward; the grouting nozzle is arranged in the upper end opening of the shell, and a grouting hole is opened on the grouting nozzle, and the grouting hole is connected to the double-liquid stirring tank; the stirring paddle is arranged at the bottom of the grouting nozzle and is located in the double-liquid stirring tank.

2. A water-stopping and anti-seepage steel sheet pile support system as claimed in claim 1, characterized in that: The grouting device storage device passes through the latch space at an angle of 45° and is firmly stuck in the latch hole groove.

3. A water-stopping and anti-seepage steel sheet pile support system as claimed in claim 1, characterized in that: Cam slide blocks are arranged on two side surfaces of the shell, and the cam slide blocks are slidably matched with the slide grooves.

4. A water-stopping and anti-seepage steel sheet pile support system as claimed in claim 1, characterized in that: The inner wall of the shell is provided with two rotating chutes, and the two sides of the grouting nozzle are installed in the two rotating chutes.

5. A water-stopping and anti-seepage steel sheet pile support system as claimed in claim 1, characterized in that: The shell is a square structure.

6. A water-stopping and anti-seepage steel sheet pile support system as claimed in claim 1, characterized in that: The water glass storage tank and the cement storage tank are radially symmetrically arranged, and the compression spring is located between the water glass storage tank and the cement storage tank.

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