Underground fender post breaking supporting device and supporting construction method

Abstract

The underground fender post breaking and removing supporting device comprises a shell with a leftward opening, a clamping arm assembly is arranged above the inner wall of the lower side of the opening end of the shell, and a supporting assembly capable of sliding out in the direction of the clamping arm assembly is arranged on the inner wall of the lower side of the shell; the upper side and the lower side of the supporting assembly are each provided with a cutting assembly, each cutting assembly comprises a cutting rope in the front-back direction, pulleys installed at the two ends in the cutting rope, first telescopic rods corresponding to the two pulleys in position and a power piece, one pulley is connected with the power piece, and the first telescopic rods can stretch out in the direction of the clamping arm assembly. The first telescopic rods are connected with the pulleys at the corresponding positions through connectors. According to the supporting construction method, the two sides of the fender post are cut and dismantled and then supported through the supporting piece, finally, the middle arch frame is erected in the middle gap of the supporting piece, and safety is higher.

Description

Technical Field

[0001] The invention relates to the field of underground structure engineering, and in particular to an underground retaining pile breaking support device and a support construction method. Background Art

[0002] With the rapid development of urban construction, the construction of urban underground tunnels has been greatly promoted. During the construction process, it is inevitable that existing buildings will be passed under the tunnel. At this time, the existing structure retaining piles need to be removed. During the removal of the retaining piles, the disturbance to the upper structure should be minimized as much as possible. For retaining piles without crown beams, this problem needs to be paid more attention.

[0003] At present, the removal of existing structural retaining piles is generally carried out by pneumatic picks, and after removal, the primary support arch frame is used for support. However, the primary support arch frame needs to form a ring before it can play a supporting role, and the arch frame forms a ring slowly, which cannot achieve the effect of timely support. In terms of the selection of cutting methods, it is generally cut as the excavation progresses. In addition, in order to reduce the disturbance caused by cutting to the surrounding rock, there are also methods such as excavating and exposing all the retaining piles in a certain distance, and then removing one by one or removing one by two. After the overall removal, the supporting force after the primary support ring is still used to support the upper structure, so that the pile foundation is exposed for a long time after cutting, and cannot be supported in time, which is relatively risky. To this end, the present application proposes an underground retaining pile removal support device and a support construction method. Summary of the invention

[0004] In view of the above problems, the present invention proposes an underground retaining pile breaking support device and a support construction method, and the specific technical scheme is as follows: A support device for breaking underground retaining piles, including a shell opening to the left, a clamping arm assembly is arranged above the lower inner wall of the open end of the shell, and a support assembly that can slide out in the direction of the clamping arm assembly is provided on the lower inner wall of the shell; cutting assemblies are provided on the upper and lower sides of the support assembly, and the cutting assembly includes a cutting rope along the front-back direction, pulleys installed at both ends of the cutting rope, a first telescopic rod corresponding to the positions of the two pulleys, and a power piece, wherein one pulley is connected to the power piece, the first telescopic rod can be extended in the direction of the clamping arm assembly, and the first telescopic rod is connected to the pulley at its corresponding position through a joint.

[0005] Furthermore, the support assembly includes two I-shaped support members arranged along the front-to-back direction, and each support member is connected to the shell through a slide rail.

[0006] Furthermore, the clamping arm assembly includes a pair of front-to-back symmetrical clamping arms.

[0007] Furthermore, a reserved hole is provided on the clamping arm.

[0008] Furthermore, the clamping arm is arc-shaped, and an arc-shaped groove is formed on one side of the lower side wall of the shell body close to the opening end.

[0009] Furthermore, a second telescopic rod is arranged on the front and rear sides of the clamping arm assembly, and the second telescopic rod is installed on the lower inner wall of the shell; the joint is detachable, including a main body, one side of the main body is provided with a pulley mounting groove, the other side of the main body is provided with a telescopic rod mounting hole, one side of the telescopic rod mounting hole is provided with an upper clamping block and a lower clamping block for clamping the telescopic rod, and the upper side of the upper clamping block is provided with a clamping bolt threadedly connected to the main body.

[0010] A support construction method for passing through underground retaining piles, comprising the above-mentioned underground retaining pile breaking support device, comprises the following steps: S1. Breaking: Use the clamping arm assembly to clamp the retaining pile, use the cutting assembly to cut and break one side of the retaining pile, and after the cutting and breaking is completed, use the support member at the corresponding position to support the retaining pile, and rotate the breaking device to cut and break the other side of the retaining pile and use another support member to support it; S2, support: erecting the middle arch frame; S3: Dismantling: Loosen the clamping arm assembly and remove the breaking device.

[0011] The beneficial effects of the present invention are: 1. After cutting with the cutting rope, the pile is supported in time with supporting parts, which solves the problems of large construction disturbance and untimely support in the traditional pile breaking process and reduces the potential safety hazards in construction.

[0012] 2. When constructing the intermediate arch support, the exposure time of the pile foundation after cutting can be reduced, so that the pile foundation can be supported in time after a part of it is broken, thereby improving the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a schematic diagram of the structure of the underground retaining pile breaking support device of the present invention; Figure 2 is a schematic diagram of the support member of the present invention; Figure 3 is a schematic diagram of the joint of the present invention; Figure 4 is a cross-sectional view of the joint of the present invention; Figure 5 is a schematic diagram of the clamping arm of the present invention; Figure 6 The working diagram of the underground retaining pile breaking support device of the present invention is as follows Figure 1 ; Figure 7 The working diagram of the underground retaining pile breaking support device of the present invention is as follows Figure 2 ; Figure 8 It is a schematic diagram of the post-support of the retaining pile stage described in the present invention.

[0015] In the figure: 1, shell; 101, slide rail; 2, support member; 3, cutting rope; 4, first telescopic rod; 5, joint; 501, pulley mounting groove; 502, main body; 503, telescopic rod mounting hole; 504, upper clamping block; 505, lower clamping block; 6, pulley; 7, clamping arm; 701, reserved hole; 8, arc groove; 9, clamping bolt; 10, guard pile; 11, second telescopic rod. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0017] The present invention provides the following specific embodiments: First, as Figure 1-5As shown, the present invention provides an underground retaining pile breaking support device, including a shell 1 with an opening facing left, a clamping arm assembly is arranged above the lower inner wall of the open end of the shell 1, and a support assembly that can slide out in the direction of the clamping arm assembly is provided on the lower inner wall of the shell 1, and the support assembly is located above the clamping arm assembly; cutting assemblies are provided on the upper and lower sides of the support assembly, and the cutting assembly includes a cutting rope 3 along the front-back direction, pulleys 6 installed at both ends of the cutting rope 3, a first telescopic rod 4 corresponding to the positions of the two pulleys 6, and a power member, wherein one pulley 6 is connected to the power member to drive the cutting rope 3 to work, and the first telescopic rod 4 is installed on the right inner wall of the shell 1, the first telescopic rod 4 can be extended in the direction of the clamping arm assembly, and the first telescopic rod 4 is connected to the pulley 6 at its corresponding position through a joint 5; the upper end surface of the support assembly is flush with the cutting rope 3 of the cutting assembly located on the upper side, and the lower end surface of the support assembly is flush with the cutting rope 3 of the cutting assembly located on the lower side.

[0018] Furthermore, the support assembly includes two I-shaped support members 2 arranged along the front-to-back direction, and each support member 2 is connected to the housing 1 via a slide rail 101 .

[0019] Furthermore, the clamping arm assembly includes a pair of front-to-back symmetrical clamping arms 7, and the clamping arms 7 work together to clamp the retaining pile 10 so that the position of the retaining pile 10 and the breaking device is fixed.

[0020] Furthermore, a reserved hole 701 is provided on the clamping arm 7 , and a bolt can be driven into the reserved hole 701 to further fix the breaking device.

[0021] Furthermore, the clamping arm 7 is arc-shaped, and an arc-shaped groove 8 is provided on one side of the lower side wall of the shell 1 close to the opening end, so as to facilitate the connection between the breaking device and the cylindrical retaining pile 10.

[0022] Furthermore, a second telescopic rod 11 is arranged on the front and rear sides of the clamping arm assembly, and the second telescopic rod 11 is installed on the lower inner wall of the shell 1; the joint 5 is detachable, including a main body 502, one side of the main body 502 is provided with a pulley mounting groove 501, the other side of the main body 502 is provided with a telescopic rod mounting hole 503, one side of the telescopic rod mounting hole 503 is provided with an upper clamping block 504 and a lower clamping block 505 for clamping the telescopic rod, and the upper side of the upper clamping block 504 is provided with a clamping bolt 9 threadedly connected to the main body 502; after the first telescopic rod 4 is extended to complete the transverse cutting, for one group of cutting components, the cutting rope 3, pulley 6, joint 5 and power part can be removed as a whole through the detachable joint 5 and installed on the second telescopic rod 11 for longitudinal cutting.

[0023] In a second aspect, the present invention provides a support construction method for passing through underground retaining piles, comprising the above-mentioned underground retaining pile breaking support device, comprising the following steps: S1. Demolition, excavation and support of the main body of the station. When encountering existing structural retaining piles, the soil around the piles is removed to completely expose the pile foundation inside the station.

[0024] S1.1, horizontal cutting on one side (the horizontal distance between two rows is 300mm-500mm to meet the requirements of the later arch, taking 300mm as an example): Figure 6 As shown, the clamping arm assembly is used to clamp the guardrail pile 10. While the cutting rope 3 rotates, the first telescopic rod 4 pushes the cutting rope 3 to move laterally to cut the guardrail pile 10, with a depth of 250 mm, thereby completing the transverse cutting on one side of the guardrail pile.

[0025] S1.2, longitudinal cutting on one side: remove the two joints 5 in the upper cutting assembly and connect them to the second telescopic rod 11. While the cutting rope 3 rotates, the second telescopic rod 11 pushes the cutting rope 3 to move longitudinally to complete the longitudinal cutting. Finally, the cutting on one side of the retaining pile is completed. Then, the removed retaining pile 10 is removed, and the support member 2 corresponding to the position is slid out to support the retaining pile 10. S1.3, cutting on the other side: Figure 7 As shown, release the clamping arm assembly, rotate the breaking device along the retaining pile for a certain angle and then re-clamp it, and repeat steps S1.1-1.2 to cut, break and support the other side of the retaining pile.

[0026] S2. Support: The broken retaining piles 10 form a state where the two sides have 250*300mm (horizontal*vertical) broken parts of support and the center is 300*300mm suspended, such as Figure 8 As shown, after the retaining pile 10 is cut, broken and supported, an intermediate arch frame is set up in the middle of the support member; S3: Dismantling: After the erection of the intermediate arch frame is completed, loosen the clamping arm assembly and remove the breaking device.

[0027] By using the support parts to provide timely support after cutting with the cutting rope, the problems of large construction disturbance and untimely support in the traditional pile breaking process are solved, and the safety hazards of construction are reduced.

[0028] When constructing the intermediate arch support, the exposure time of the pile foundation after cutting can be reduced, so that the pile foundation can be supported in time after a part of it is broken, thereby improving the construction quality.

[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 to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An underground retaining pile breaking support device, characterized in that: The invention comprises a shell (1) with an opening facing leftward, a clamping arm assembly being arranged above the lower inner wall of the opening end of the shell (1), and a support assembly being arranged on the lower inner wall of the shell (1) and being capable of sliding out in the direction of the clamping arm assembly; cutting assemblies being arranged on the upper and lower sides of the support assembly, the cutting assembly comprising a cutting rope (3) extending in the front-rear direction, pulleys (6) installed at both ends of the cutting rope (3), a first telescopic rod (4) corresponding to the positions of the two pulleys (6), and a power member, wherein one pulley (6) is connected to the power member, the first telescopic rod (4) being capable of extending out in the direction of the clamping arm assembly, and the first telescopic rod (4) being connected to the pulley (6) at the corresponding position thereof via a joint (5).

2. The underground retaining pile breaking and supporting device according to claim 1 is characterized in that: The support assembly comprises two I-shaped support members (2) arranged along the front-rear direction, and each support member (2) is connected to the housing (1) via a slide rail (101).

3. The underground retaining pile breaking and supporting device according to claim 1 is characterized in that: The clamping arm assembly comprises a pair of front-to-back symmetrical clamping arms (7).

4. The underground retaining pile breaking and supporting device according to claim 3 is characterized in that: A reserved hole (701) is also provided on the clamping arm (7).

5. The underground retaining pile breaking and supporting device according to claim 3 is characterized in that: The clamping arm (7) is arc-shaped, and an arc-shaped groove (8) is formed on one side of the lower side wall of the housing (1) close to the opening end.

6. The underground retaining pile breaking and supporting device according to claim 1 is characterized in that: A second telescopic rod (11) is arranged on both the front and rear sides of the clamping arm assembly, and the second telescopic rod (11) is mounted on the lower inner wall of the housing (1); the joint (5) is detachable and comprises a main body (502), one side of the main body (502) is provided with a pulley mounting groove (501), the other side of the main body (502) is provided with a telescopic rod mounting hole (503), one side of the telescopic rod mounting hole (503) is provided with an upper clamping block (504) and a lower clamping block (505) for clamping the telescopic rod, and the upper side of the upper clamping block (504) is provided with a clamping bolt (9) threadedly connected to the main body (502).

7. A support construction method for passing through underground retaining piles, comprising the underground retaining pile breaking support device according to any one of claims 1 to 6, characterized in that: The steps include: S1. Breaking: using the clamping arm assembly to clamp the retaining pile (10), using the cutting assembly to cut and break one side of the retaining pile (10), after the cutting and breaking is completed, using the support member (2) at the corresponding position to support the retaining pile (10), and rotating the breaking device to cut and break the other side of the retaining pile (10) and use another support member (2) to support it; S2, support: erecting the middle arch frame; S3: Dismantling: Loosen the clamping arm assembly and remove the breaking device.

Images