A circular foundation pit steel pipe pile enclosure ring self-sealing water stop joint device and method

Abstract

This invention relates to a circumferential self-sealing water-stopping joint device and method for circular foundation pit steel pipe pile retaining walls. The device includes a sleeved sub-lock and a female lock, both connected to the corresponding steel pipe pile via a Y-shaped connecting plate. The sub-lock has two fan blades connected to the Y-shaped connecting plate via hinges, and the inner cavity of the fan blades has multiple radially arranged support units. One end of the female lock is an open cylinder capable of rotating at a certain angle. This circumferential self-sealing water-stopping joint device and method for circular foundation pit steel pipe pile retaining walls utilizes the active expansion and contraction within the joint under compression to achieve dynamic self-adaptation and self-sealing water-stopping of the steel pipe pile retaining wall joint, thus providing a reliable solution for the safety risk management of groundwater leakage in circular foundation pit steel pipe pile retaining walls.

Description

Technical Field

[0001] This invention belongs to the field of underground engineering technology, and specifically relates to a circumferential self-sealing water-stopping joint device and method for the retaining wall of a circular foundation pit using steel pipe piles. Background Technology

[0002] In recent years, the steel pipe pile driving technology using a non-resonant hydraulic vibratory hammer has been widely used in soft soil areas due to its advantages such as high construction efficiency, low noise, and low environmental impact, making it a common application in municipal bridge pile foundation projects. With the continuous promotion of low-carbon and green development concepts in the construction industry, the use of the recyclable characteristics of steel pipe piles and the adoption of green and efficient retaining structure systems such as PC method piles based on steel pipe piles are gradually gaining industry recognition.

[0003] For soft, water-rich soil strata, safety accidents caused by seepage in foundation pit retaining walls are frequent. Traditional methods involve reinforcing the water-stop curtains both inside and outside the steel pipe pile retaining wall, which is time-consuming, labor-intensive, and doesn't guarantee a good water-stopping effect. Alternatively, Larssen steel plates can be installed between the steel pipe piles to enhance the water-stopping effect, but the simple connection joints between the Larssen steel plates and the steel pipe piles often become weak points for further leakage. Once leakage occurs, it will have a significant impact on the surrounding environment, affecting nearby pipelines, tunnels, and existing buildings. Especially under conditions of soil loss, it poses long-term adverse risks to the underground structures within the retaining structure.

[0004] Currently, some methods involve injecting grease or other filling materials at the joint locations to seal the rigid gaps between the joints. However, for steel pipe piles in circular foundation pits, there is a circumferential compression effect, causing the grease or other filling materials injected into the joint to be directly squeezed out of the joint cavity. If the joint subsequently recovers or rotates and deforms, it will directly create a cavity and further form a water flow channel, leading to leakage of the retaining structure. It is often difficult to fill the secondary filling material completely to achieve the water-stopping effect.

[0005] Therefore, how to provide a circumferential self-sealing water-stopping joint device for circular foundation pit steel pipe pile retaining to solve the problem of safety risk control of foundation pit leakage in steel pipe pile retaining is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] To address the challenge of controlling groundwater leakage safety risks associated with steel pipe pile retaining structures, this paper proposes a circumferential self-sealing water-stopping joint device and method for circular foundation pit steel pipe pile retaining structures, taking into account the circumferential compression stress characteristics of circular foundation pits. This method utilizes the active expansion and growth within the joint under compression to achieve dynamic self-adaptation and self-sealing of the steel pipe pile retaining joint, thus providing a reliable solution for controlling groundwater leakage safety risks in circular foundation pit steel pipe pile retaining structures.

[0007] To solve the above technical problems, the present invention includes the following technical solutions:

[0008] A circular self-sealing water-stopping joint device for the retaining wall of a circular foundation pit steel pipe pile includes a sub-locking port and a female locking port that are connected by a sleeve. Both the sub-locking port and the female locking port are connected to the corresponding side steel pipe piles through a Y-shaped connecting plate. The sub-locking port is provided with two fan blades, which are connected to the Y-shaped connecting plate through hinges. The inner cavity of the fan blades is provided with multiple top support units along the radial direction. One end of the female locking port is an open cylinder that can rotate at a certain angle.

[0009] Furthermore, if the sub-lock and the female lock are assembled by rotation, the opening cylinder of the female lock is rotated at a certain angle to connect with the sub-lock.

[0010] After the sub-lock and the female lock are connected, they are filled with a filling material to make them dense.

[0011] This invention also provides a method for circumferential self-sealing and water-stopping of circular foundation pits using steel pipe pile retaining walls, the method comprising the following steps:

[0012] Step S1: Provide the circular self-sealing water-stop joint device for the steel pipe pile retaining wall of the circular foundation pit for standby.

[0013] Step S2: The female interlocking joint is driven into the designed location in the stratum along with the steel pipe pile;

[0014] Step S3: The sub-lock joint is driven into the designed position in the stratum along with another steel pipe pile, and the sub-lock joint is connected to the main lock joint;

[0015] Step S4: After the male and female lock ports are connected, they are filled with filler material to ensure they are compacted.

[0016] Step S5: Under the circumferential compression of the circular pit, the joint circumferential compression sub-lock and female lock self-close.

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

[0018] This invention provides a circumferential self-sealing water-stopping joint device for circular foundation pit steel pipe pile retaining walls, comprising a sleeved sub-lock and a female lock, both connected to the corresponding side steel pipe pile via a Y-shaped connecting plate. The sub-lock has two fan blades, which are connected to the Y-shaped connecting plate via hinges. Multiple support units are radially arranged within the inner cavity of each fan blade. One end of the female lock is an open cylinder capable of rotating at a certain angle. This circumferential self-sealing water-stopping joint device and method for circular foundation pit steel pipe pile retaining walls utilizes the active expansion and contraction within the joint under compression to achieve dynamic self-adaptation and self-sealing water-stopping of the steel pipe pile retaining joint, thus providing a reliable solution for the safety risk management of groundwater leakage in circular foundation pit steel pipe pile retaining walls. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the neutron lock opening of a circular foundation pit steel pipe pile retaining circumferential self-sealing water-stop joint device according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the central locking port of a circular foundation pit steel pipe pile retaining circumferential self-sealing water-stopping joint device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the linear assembly of the male and female locking ports in a circular foundation pit steel pipe pile retaining ring self-sealing water-stopping joint device according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the rotating assembly of the male and female locking ports in a circular foundation pit steel pipe pile retaining ring self-sealing water-stopping joint device according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the filling material being added after the male and female locking joints of the circular foundation pit steel pipe pile retaining ring self-sealing water-stopping joint device are connected in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the circumferential self-sealing water-stop joint device for the steel pipe pile retaining wall of a circular foundation pit according to an embodiment of the present invention, showing the self-sealing structure of the circumferential compression sub-lock and the female lock.

[0025] In the picture:

[0026] 1-Y-type connecting plate, 2-fan blade, 3-top support unit, 4-hinge, 5-open cylinder. Detailed Implementation

[0027] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a circumferential self-sealing water-stop joint device and method for the retaining wall of a circular foundation pit using steel pipe piles. The advantages and features of the present invention will become clearer from the following description. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, used only to facilitate and clarify the illustration of the embodiments of the present invention. For ease of description, the terms "upper" and "lower" used below correspond to the upper and lower directions in the accompanying drawings, but this should not be construed as a limitation of the technical solution of the present invention.

[0028] Example 1

[0029] The following is combined with Figures 1 to 6 This document details the structural composition of the circumferential self-sealing water-stop joint device for the steel pipe pile retaining structure of a circular foundation pit.

[0030] Please refer to Figures 1 to 6A circular self-sealing water-stopping joint device for the retaining wall of a steel pipe pile in a circular foundation pit includes a sub-lock and a female lock that are connected by a sleeve. Both the sub-lock and the female lock are connected to the corresponding steel pipe pile through a Y-shaped connecting plate 1. The sub-lock is provided with two fan blades 2, which are connected to the Y-shaped connecting plate 1 through a hinge 4. The inner cavity of the fan blade 2 is provided with multiple top support units 3 along the radial direction. One end of the female lock is an open cylinder 5, which can rotate at a certain angle.

[0031] In this embodiment, more preferably, if the female lock and the male lock are assembled by rotation, the opening cylinder 5 of the female lock is rotated at a certain angle to connect with the female lock.

[0032] In this embodiment, more preferably, the female lock and the male lock are connected by a sleeve and then filled with a filling material to make them dense.

[0033] Please continue to refer to this. Figures 1 to 6 This embodiment also provides a method for circumferential self-sealing and water-stopping of circular foundation pit steel pipe pile retaining walls, which includes the following steps:

[0034] Step S1: Provide a spare circumferential self-sealing water-stop joint device for the steel pipe pile retaining structure of the circular foundation pit;

[0035] Step S2: The female interlocking joint is driven into the designed location in the stratum along with the steel pipe pile;

[0036] Step S3: The sub-lock joint is driven into the designed position in the stratum along with another steel pipe pile, and the sub-lock joint is connected to the main lock joint;

[0037] Step S4: After the male and female lock ports are connected, they are filled with filler material to ensure they are compacted.

[0038] Step S5: Under the circumferential compression of the circular pit, the joint circumferential compression sub-lock and female lock 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 illustrate several implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A circumferential self-sealing water-stopping joint device for the retaining wall of a circular foundation pit using steel pipe piles, characterized in that, The system includes a female locking port and a female locking port that are connected by a socket. Both the female locking port and the female locking port are connected to the corresponding steel pipe piles via a Y-shaped connecting plate. The female locking port has two fan blades, which are connected to the Y-shaped connecting plate via hinges. The inner cavity of the fan blades has multiple support units arranged radially. One end of the female locking port is an open cylinder that can rotate at a certain angle. The support unit includes an I-beam and two support rods. One end of the I-beam is connected to the two support rods via hinges, and the other ends of the two support rods are connected to the straight sections of the corresponding fan blades via hinges, forming a figure-eight structure. The free end of the I-beam can abut against the wall of the open cylinder.

2. The circumferential self-sealing water-stop joint device for circular foundation pit steel pipe pile retaining as described in claim 1, characterized in that, If the sub-lock and the female lock are assembled by rotation, the opening cylinder of the female lock is rotated at a certain angle to connect with the sub-lock.

3. The circumferential self-sealing water-stop joint device for circular foundation pit steel pipe pile retaining as described in claim 1, characterized in that, After the sub-lock and the female lock are connected, they are filled with a filling material to make them dense.

4. A circumferential self-sealing water-stopping method for steel pipe pile retaining walls of a circular foundation pit, characterized in that... Includes the following steps: Step S1: Provide the circular self-sealing water-stop joint device for the circular foundation pit steel pipe pile retaining structure as described in any one of claims 1 to 3 for later use; Step S2: The female interlocking joint is driven into the designed location in the stratum along with the steel pipe pile; Step S3: The sub-lock joint is driven into the designed position in the stratum along with another steel pipe pile, and the sub-lock joint is connected to the main lock joint; Step S4: After the male and female lock ports are connected, they are filled with filler material to ensure they are compacted. Step S5: Under the circumferential compression of the circular pit, the joint circumferential compression sub-lock and female lock self-close.

Images