Circular foundation pit steel pipe pile enclosure circumferential self-sealing water stop connector device and method

Abstract

The invention relates to a circular foundation pit steel pipe pile enclosure circumferential self-sealing water stop connector device and method.The device comprises a son locking opening and a mother locking opening which are connected in a sleeved mode, the son locking opening and the mother locking opening are connected with steel pipe piles on the corresponding sides through Y-shaped connecting plates, the son locking opening is provided with two fan blades, and the fan blades are connected with the Y-shaped connecting plates through hinges; a plurality of jacking units are arranged in an inner cavity of the fan blade in the radial direction. One end of the female locking opening is an open cylinder which can rotate by a certain angle. According to the circular foundation pit steel pipe pile enclosure circumferential self-sealing water stop connector device and method, dynamic self-adaption and self-sealing water stop of the steel pipe pile enclosure connector are achieved by means of the fact that the connector actively generates the expansion effect in the connector under the extrusion effect; therefore, a reliable solution is provided for underground water leakage safety risk management and control of the circular foundation pit steel pipe pile enclosure.

Description

Technical Field

[0001] The invention belongs to the technical field of underground engineering, and particularly relates to a circular foundation pit steel pipe pile enclosure annular self-sealing water-stopping joint device and method. Background Art

[0002] In recent years, the steel pipe pile sinking technology of the resonance-free hydraulic vibration hammer has been widely used in soft soil areas. It is widely used in municipal bridge pile foundation projects due to its advantages of high construction efficiency, low noise and low environmental impact. With the continuous promotion of the low-carbon and green development concept of the construction industry, the green and efficient enclosure structure system such as PC method pile based on steel pipe piles has gradually been recognized by the industry by utilizing the recyclable characteristics of steel pipe piles.

[0003] As for soft soil and water-rich strata, safety accidents caused by foundation pit enclosure leakage are also emerging one after another. The traditional method is to strengthen the water-stop curtain construction inside and outside the steel pipe pile enclosure, which is time-consuming and labor-intensive, and the water-stop effect cannot be well guaranteed. Or Larsen steel plates are installed between each steel pipe pile to strengthen the water-stop effect, but the simple connection joint water-stop between the Larsen steel plate and the steel pipe pile often becomes a weak link for leakage. Once leakage occurs, it will cause a great deformation impact on the surrounding environment. There will be certain deformation impacts on nearby pipelines, tunnels, existing buildings, etc., especially under the condition of soil loss, there will be long-term adverse risks to the underground structure in the enclosure structure.

[0004] At present, there are some methods of adding grease and other filling materials at the joint positions to seal the rigid gaps between the joints. However, there is an annular extrusion effect between the circular foundation pit steel pipe piles, which causes the grease and other filling materials injected into the joints to be directly squeezed out of the joint cavity. Once the joints are subsequently restored or rotated and deformed, cavities are directly generated to further form water flow channels, leading to the formation of enclosure leakage. The secondary filling of filling materials is often difficult to fill fully to achieve a water-stopping effect.

[0005] Therefore, how to provide a circular foundation pit steel pipe pile enclosure annular self-sealing water stop joint device to solve the problem of foundation pit leakage safety risk control existing in steel pipe pile enclosure is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0006] In view of the difficulty in controlling the safety risk of leakage in foundation pits using steel pipe piles for enclosure, combined with the annular extrusion stress characteristics of the enclosure structure of a circular foundation pit, a device and method for annular self-sealing water-stopping joints for circular foundation pit steel pipe pile enclosures are proposed. The device and method utilize the active expansion effect inside the joint under the extrusion effect to achieve dynamic self-adaptation and self-sealing water-stopping of the steel pipe pile enclosure joints, thereby providing a reliable solution for the safety risk control of groundwater leakage in circular foundation pit steel pipe pile enclosures.

[0007] In order to solve the above technical problems, the present invention includes the following technical solutions:

[0008] A circular foundation pit steel pipe pile enclosure annular self-sealing water-stop joint device, comprising a sub-locking mouth and a female lock mouth that are sleeve-connected, the sub-locking mouth and the female lock mouth are connected to the corresponding side steel pipe piles through a Y-shaped connecting plate, the sub-locking mouth is provided with two blades, the blades are connected to the Y-shaped connecting plate through a hinge, and the inner cavity of the blade is radially provided with a plurality of supporting units; one end of the female lock mouth is an open cylinder, and the open cylinder can be rotated to a certain angle.

[0009] Furthermore, if the sub-locking port and the female lock port are assembled by rotation, the opening cylinder of the female lock port is rotated by a certain angle to be sleeve-connected with the sub-locking port.

[0010] The sub-locking opening and the female lock opening are connected by sleeve connection and then filled with filling material to make them dense.

[0011] The present invention also provides a circular foundation pit steel pipe pile enclosure annular self-sealing water-stopping method, the method comprising the following steps:

[0012] Step S1, providing the circular foundation pit steel pipe pile enclosure annular self-sealing water-stop joint device for standby;

[0013] Step S2, the female lock mouth is driven into the designed position of the stratum together with the steel pipe pile;

[0014] Step S3, the sub-locking mouth is driven into the designed position of the stratum along with another steel pipe pile, and the sub-locking mouth is sleeved with the main locking mouth;

[0015] Step S4, the sub-locking port and the female lock port are connected by sleeve connection and then filled with filling material to make them dense;

[0016] Step S5: Under the circumferential extrusion effect of the circular foundation pit, the joint circumferentially extrudes the sub-locking mouth and the female lock mouth to self-close.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] The present invention provides a circular foundation pit steel pipe pile enclosure annular self-sealing water-stop joint device, comprising a sleeve-connected sub-locking mouth and a female lock mouth, the sub-locking mouth and the female lock mouth are connected to the corresponding side steel pipe pile through a Y-shaped connecting plate, the sub-locking mouth is provided with two blades, the blades are connected to the Y-shaped connecting plate through a hinge, and the inner cavity of the blades is provided with a plurality of supporting units along the radial direction; one end of the female lock mouth is an open cylinder, and the open cylinder can rotate to a certain angle. The circular foundation pit steel pipe pile enclosure annular self-sealing water-stop joint device and method utilizes the active expansion and swelling effect inside the joint under the extrusion effect of the joint to achieve dynamic self-adaptation and self-sealing water-stopping of the steel pipe pile enclosure joint, thereby providing a reliable solution for the safety risk control of groundwater leakage in the circular foundation pit steel pipe pile enclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a neutron lock port of a circular foundation pit steel pipe pile enclosure annular self-sealing water-stop joint device according to an embodiment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a middle female lock port of a circular foundation pit steel pipe pile enclosure annular self-sealing water-stop joint device according to an embodiment of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the linear assembly of the male and female locking ports in a circular foundation pit steel pipe pile enclosure annular self-sealing water-stop joint device according to an embodiment of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the rotary assembly of the male locking mouth and the female locking mouth in the annular self-sealing water-stop joint device for the steel pipe pile enclosure of a circular foundation pit according to one embodiment of the present invention;

[0023] Figure 5 It is a structural schematic diagram of filling material after the male locking port and the female locking port of the circular foundation pit steel pipe pile retaining ring self-sealing water stop joint device are sleeved together according to one embodiment of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the self-sealing of the annular self-sealing water-stop joint device for the circular foundation pit steel pipe pile enclosure according to an embodiment of the present invention, in which the sub-locking mouth and the female lock mouth are circumferentially extruded and self-sealed.

[0025] In the figure:

[0026] 1-Y-type connecting plate, 2-fan blades, 3-top support unit, 4-hinge, 5-opening cylinder. DETAILED DESCRIPTION

[0027] The following is a further detailed description of a circular foundation pit steel pipe pile retaining ring self-sealing water-stop joint device and method provided by the present invention in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. For the convenience of description, the "upper" and "lower" described below are consistent with the upper and lower directions of the accompanying drawings, but this cannot be a limitation of the technical solution of the present invention.

[0028] Embodiment 1

[0029] Combine the following Figures 1 to 6 , and detailed description of the structural composition of the circular foundation pit steel pipe pile retaining annular self-sealing water-stop joint device.

[0030] Please refer to Figures 1 to 6A circular foundation pit steel pipe pile enclosure annular self-sealing water-stop joint device, including a sub-locking mouth and a female lock mouth connected by a sleeve, the sub-locking mouth and the female lock mouth are connected to the corresponding side steel pipe pile through a Y-shaped connecting plate 1, the sub-locking mouth is provided with two blades 2, the blades 2 are connected to the Y-shaped connecting plate 1 through a hinge 4, and the inner cavity of the blade 2 is provided with a plurality of supporting units 3 along the radial direction; one end of the female lock mouth is an open cylinder 5, and the open cylinder 5 can be rotated to a certain angle.

[0031] In this embodiment, more preferably, if the sub-locking port and the female lock port are assembled by rotation, the opening cylinder 5 of the female lock port is rotated by a certain angle to be sleeve-connected with the sub-locking port.

[0032] In this embodiment, more preferably, the sub-locking opening and the female locking opening are connected by sleeve connection and then filled with filling material to make them dense.

[0033] Please continue to refer to Figures 1 to 6 This embodiment also provides a circular foundation pit steel pipe pile enclosure annular self-sealing water-stopping method, the method comprising the following steps:

[0034] Step S1, providing a circular foundation pit steel pipe pile enclosure annular self-sealing water stop joint device for standby;

[0035] Step S2, the female lock mouth is driven into the designed position of the stratum together with the steel pipe pile;

[0036] Step S3, the sub-locking mouth is driven into the designed position of the stratum along with another steel pipe pile, and the sub-locking mouth is sleeved with the main locking mouth;

[0037] Step S4, the sub-locking port and the female lock port are connected by sleeve connection and then filled with filling material to make them dense;

[0038] Step S5: Under the circumferential extrusion effect of the circular foundation pit, the joint circumferentially extrudes the sub-locking mouth and the female lock mouth to self-close.

[0039] The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. The above embodiments only express several embodiments of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A circular foundation pit steel pipe pile enclosure annular self-sealing water stop joint device, characterized in that: It includes a sub-locking mouth and a female locking mouth that are sleeve-connected, and the sub-locking mouth and the female locking mouth are connected to the corresponding side steel pipe piles through a Y-shaped connecting plate. The sub-locking mouth is provided with two fan blades, and the fan blades are connected to the Y-shaped connecting plate through a hinge. The inner cavity of the fan blade is radially provided with multiple supporting units; one end of the female locking mouth is an open cylinder, and the open cylinder can be rotated to a certain angle.

2. The circular foundation pit steel pipe pile enclosure annular self-sealing water stop joint device according to claim 1 is characterized in that: If the sub-locking port and the female lock port are assembled by rotation, the opening cylinder of the female lock port is rotated by a certain angle to be sleeve-connected with the sub-locking port.

3. The circular foundation pit steel pipe pile enclosure annular self-sealing water stop joint device according to claim 1 is characterized in that: The sub-locking opening and the female lock opening are connected by sleeve connection and then filled with filling material to make them dense.

4. The circular foundation pit steel pipe pile enclosure annular self-sealing water-stopping method according to any one of claims 1 to 3, characterized in that: The steps include: Step S1, providing the circular foundation pit steel pipe pile enclosure annular self-sealing water-stop joint device for standby; Step S2, the female lock mouth is driven into the designed position of the stratum together with the steel pipe pile; Step S3, the sub-locking mouth is driven into the designed position of the stratum along with another steel pipe pile, and the sub-locking mouth is sleeved with the main locking mouth; Step S4, the sub-locking port and the female lock port are connected by sleeve connection and then filled with filling material to make them dense; Step S5: Under the circumferential extrusion effect of the circular foundation pit, the joint circumferentially extrudes the sub-locking mouth and the female lock mouth to self-close.

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