A vertical temporary support device for existing underground station construction and installation method

Abstract

The present application discloses a vertical temporary support device and installation method for existing underground station construction. The device comprises a crossbeam and two vertical columns for supporting the crossbeam. The vertical columns comprise a base section and a shaft section. A hinge is provided between the lower end of the shaft section and the upper end of the base section. The upper ends of the two shaft sections are slidably connected to the lower end surface of the crossbeam along the length direction of the crossbeam. A telescopic drive is provided between the base section and the shaft section. The telescopic drive is used to drive the base section to swing upward with the hinge as the axis. When the shaft section swings upward to a vertical state, the two shaft sections jointly support the crossbeam. The present application has the effect of improving the installation efficiency of the temporary support structure.

Description

Technical Field

[0001] The present application relates to the technical field of underground station construction, and in particular to a vertical temporary support device and installation method for existing underground station construction. Background Art

[0002] After the platform slabs in the existing station are demolished, and before the side walls of the main structure are demolished, temporary steel columns are added under each floor slab to provide support for the station structure to prevent deformation of the existing station structure.

[0003] The material of the temporary columns is 609 diameter (t=16mm) steel support. The crossbeams set at the bottom of each structural plate at the support position are double-piece I-beams I45b. After the platform plate of this layer is dismantled and removed, the crossbeams and steel columns are installed in sequence from bottom to top. The electric hoist installs the upper crossbeam, and the steel columns support the upper crossbeam. The crossbeam rests against the top of the underground station wall to support the wall panel.

[0004] Regarding the above-mentioned related technologies, the applicant believes that there are the following defects: the beams need to be installed by hoisting, and the steel columns need to be built on site, which leads to the problem of low efficiency in the installation of temporary support structures. Therefore, there is still room for improvement. Summary of the Invention

[0005] In order to improve the installation efficiency of temporary support structures, the present application provides a vertical temporary support device and installation method for existing underground station construction.

[0006] This application provides a vertical temporary support device and installation method for existing underground station construction, which adopts the following technical solutions:

[0007] A vertical temporary support device for the construction of an existing underground station includes a crossbeam and two vertical columns for supporting the crossbeam, the vertical columns include a base section and a column body section, a hinge is provided between the lower end of the column body section and the upper end of the base section, the upper ends of the two column body sections are both slidably connected to the lower end surface of the crossbeam along the length direction of the crossbeam, a telescopic drive member is provided between the base section and the column body section, the telescopic drive member is used to drive the base section to swing upward with the hinge as the axis, when the column body section swings up to a vertical state, the two column body sections jointly support the crossbeam.

[0008] By adopting the above technical solution, there is no need to assemble the column units step by step from bottom to top. The column body section of the column can be flipped up by pulling the telescopic drive member to complete the positioning of the column body section. At the same time, when the two column body sections are swung up, the crossbeam is also stably lifted up, which is conducive to the positioning of the crossbeam on the top of the wall. There is no need to hoist the crossbeam, which is conducive to improving the installation efficiency of the temporary support device.

[0009] Preferably, the hinge includes a rotating shaft horizontally arranged on the upper edge of the column base segment and a connecting block arranged on the lower edge of the column body segment. The connecting block is rotatably connected to the rotating shaft. When the column body segment is swung to a vertical state, the lower end surface of the column body segment abuts against the upper end surface of the column base segment.

[0010] By adopting the above technical solution, when the column section is swung to a vertical state, the lower end surface of the column section abuts against the upper end surface of the column base section, thereby increasing the contact area between the column section and the column base section, which is beneficial to improving the stability of the column section and transferring the load of the beam to the column base section.

[0011] Preferably, a mounting seat is provided at the lower end of the column section, one end of the telescopic drive member is hinged to the inner wall of the column base section, and the other end of the telescopic drive member is hinged to the mounting seat. When the telescopic drive member contracts, the column section swings upward with the rotating shaft as the axis.

[0012] By adopting the above technical solution, the contraction of the application drive member is used to pull the telescopic drive member, which is beneficial to improving the stable upward swing of the column section.

[0013] Preferably, a sliding connection piece is provided at the upper end of the column section, and a sliding groove is provided on the lower end surface of the crossbeam, and the sliding groove is slidably connected along the length direction of the crossbeam.

[0014] By adopting the above technical solution, the crossbeam can be stably raised as the column body section swings upward, which is beneficial to the stability of the temporary support device.

[0015] Preferably, the sliding connection member includes a T-shaped slider slidably connected to the sliding groove and a collar rotatably connected to the upper edge of the column segment, and the T-shaped slider is fixedly connected to the collar.

[0016] By adopting the above technical solution, the flexibility of the sliding connection is improved, and the situation of the beam getting stuck during the movement is improved while ensuring that the beam does not separate from the column section during the movement.

[0017] A method for installing a vertical temporary support device for existing underground station construction comprises the following steps:

[0018] S1: Move the temporary support device to the construction location, and then fix the two column base sections on the construction ground;

[0019] S2: Then the telescopic driving members in the two column base sections are started simultaneously, the telescopic driving members contract, and drive the column sections to swing upward around the axis of the rotation shaft. When the column sections swing upward to a vertical state, the lower end faces of the column sections abut against the upper end faces of the column base sections, and the two column sections move to the two ends of the crossbeam respectively, and the upper end faces of the column sections abut against the lower end faces of the crossbeam.

[0020] By adopting the above technical solution, there is no need to assemble the column units step by step from bottom to top. The column body section of the column can be flipped up by pulling the telescopic drive member to complete the positioning of the column body section. At the same time, when the two column body sections are swung up, the crossbeam is also stably lifted up, which is conducive to the positioning of the crossbeam on the top of the wall. There is no need to hoist the crossbeam, which is conducive to improving the installation efficiency of the temporary support device.

[0021] Preferably, the telescopic drive member is detachably connected to the column base section, and the connecting block is detachably connected to the rotating shaft; in S2, after the column body section is swung to a vertical state, the connection between the lower end of the telescopic drive member and the column base section is removed, and the lower end of the telescopic drive member is vertically fixed on the construction ground, and then the connection between the connecting block and the rotating shaft is removed, and then the telescopic drive member pushes the mounting seat upward to drive the column body section and the column base section to separate until the upper end surface of the beam is pressed against the top of the wall.

[0022] When the crossbeam still cannot be pressed against the top of the wall after the column section is swung to a vertical state, by adopting the above-mentioned technical solution, after the telescopic drive member pulls the column section to an upright state by contraction, the connection between the lower end of the telescopic drive member and the column base section, as well as the connection between the connecting block and the rotating shaft are disassembled in sequence, and then, under the extension and pushing action of the telescopic drive member, the column section and the column base section are separated, which is conducive to adjusting the height of the crossbeam and thereby improving the adaptability of the temporary support device.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The vertical columns are divided into mutually hinged column base sections and column shaft sections. The vertical columns and beams are put into position simultaneously by swinging up the column shaft sections. This eliminates the need to assemble column units step by step from bottom to top and eliminates the need to hoist beams, which helps improve the installation efficiency of the temporary support device.

[0025] 2. When the crossbeam still cannot be pressed against the top of the wall after the column body section is swung to a vertical position, the connection between the lower end of the telescopic drive member and the column base section, as well as the connection between the connecting block and the rotating shaft, are sequentially disassembled. Then, under the extension and pushing action of the telescopic drive member, the column body section and the column base section are separated, which is conducive to adjusting the height of the crossbeam and thereby improving the adaptability of the temporary support device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the state of a vertical temporary support device for construction of an existing underground station before installation according to an embodiment of the present application.

[0027] Figure 2 yes Figure 1 Enlarged schematic diagram of point A in the middle.

[0028] Figure 3This is a diagram showing the connection relationship between the column section and the crossbeam in a vertical temporary support device for existing underground station construction in an embodiment of the present application.

[0029] Figure 4 This is a schematic diagram of an embodiment of the present application showing a column section of a vertical temporary support device for construction of an existing underground station after being swung to a vertical state.

[0030] Figure 5 yes Figure 4 Enlarged schematic diagram of point B in the middle.

[0031] Figure 6 This is a schematic diagram of the state of a telescopic driving member in an existing vertical temporary support device for underground station construction after supporting the column section in an embodiment of the present application.

[0032] Explanation of the accompanying drawings: 1. crossbeam; 11. slide groove; 2. vertical column; 21. column base section; 211. rotating shaft; 22. column body section; 221. connecting block; 222. mounting seat; 3. telescopic driving member; 4. sliding connecting member; 41. T-shaped slider; 42. collar. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] The present application discloses a vertical temporary support device and installation method for existing underground station construction. Figure 1 and Figure 2 A vertical temporary support device for the construction of an existing underground station includes a horizontal beam 1 and two vertical columns 2 for supporting the horizontal beam 1. The vertical columns 2 include a column base section 21 and a column body section 22, and both the column base section 21 and the column body section 22 are rectangular steel frame structures. A hinge is provided between the lower edge of the column body section 22 and the upper edge of the column base section 21. Specifically, the hinge includes a rotating shaft 211 horizontally installed on the upper edge of the column base section 21 and a connecting block 221 provided on the lower edge of the column body section 22. The rotating shaft 211 is parallel to one of the upper edges of the column base section 21, and the connecting block 221 is rotatably sleeved on the outer peripheral surface of the rotating shaft 211 to achieve the purpose of rotatably connecting the connecting block 221 and the rotating shaft 211.

[0035] Reference Figure 3 A slide groove 11 is provided on the lower end surface of the beam 1. The length direction of the slide groove 11 is consistent with the length direction of the beam 1. The slide groove 11 is T-shaped. A sliding connection 4 is installed on the upper edge of the column section 22. The sliding connection 4 includes a T-shaped slider 41 and a ring 42 fixedly connected to the T-shaped slider 41. The T-shaped slider 41 is adapted to the slide groove 11, and the T-shaped slider 41 is slidably connected to the slide groove 11. The ring 42 is rotatably sleeved on the edge of the upper end of the column section 22.

[0036] Reference Figure 4 and Figure 5 A telescopic drive member 3 is installed between the column base section 21 and the column shaft section 22. Specifically, the telescopic drive member 3 is a hydraulic cylinder. A mounting seat 222 is fixedly installed inside the lower end of the column shaft section 22. The bottom end of the hydraulic cylinder barrel is hinged to the inner wall of the column base section 21, and the end of the hydraulic cylinder piston rod is hinged to the mounting seat 222. The hinge point between the hydraulic cylinder and the mounting seat 222 is located on the centerline of the column shaft section 22. The telescopic drive member 3 and the column base section 21, as well as the connection between the connecting block 221 and the rotating shaft 211, are all detachably connected.

[0037] A method for installing a vertical temporary support device for existing underground station construction comprises the following steps:

[0038] S1: Move the temporary support device to the construction location, then fix the two column base sections 21 on the construction ground, and the column body section 22 and the crossbeam 1 are both arranged horizontally.

[0039] S2: Then the hydraulic cylinders in the two column base sections 21 are started at the same time, the hydraulic cylinders contract, and drive the column section 22 to swing upward around the axis of the rotation axis 211. When the column section 22 swings up to a vertical state, the lower end surface of the column section 22 abuts against the upper end surface of the column base section 21. During the upward swing of the column section 22, the two column sections 22 move from the middle of the beam 1 to the two ends of the beam 1 respectively, and the upper end surface of the column section 22 abuts against the lower end surface of the beam 1, and props up the beam 1, and the temporary support device forms a door-shaped support structure.

[0040] Reference Figure 6 When the column section 22 is swung up to a vertical position and the crossbeam 1 still cannot be pressed against the top of the wall, the column section 22 can be swung up to a vertical position, and then the connection between the lower end of the telescopic drive member 3 and the column base section 21 can be removed, and the lower end of the hydraulic cylinder can be fixed vertically on the construction ground. Then, the connection between the connecting block 221 and the rotating shaft 211 can be removed, and then the hydraulic cylinder can be used to push the mounting seat 222 upward to drive the column section 22 and the column base section 21 to separate until the upper end surface of the crossbeam 1 is pressed against the top of the wall.

[0041] In order to further improve the stability of the column shaft section 22 and share the load of the hydraulic cylinder, a jack can be installed in the gap between the column shaft section 22 and the column base section 21.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A vertical temporary support device for the construction of an existing underground station, characterized by: The invention comprises a crossbeam (1) and two vertical columns (2) for supporting the crossbeam (1); the vertical columns (2) comprise a column base section (21) and a column body section (22); a hinge is provided between the lower end of the column body section (22) and the upper end of the column base section (21); the upper ends of the two column body sections (22) are slidably connected to the lower end surface of the crossbeam (1) along the length direction of the crossbeam (1); a telescopic driving member (3) is provided between the column base section (21) and the column body section (22); the telescopic driving member (3) is used to drive the column body section (22) to swing upward with the hinge as the axis; when the column body section (22) swings upward to a vertical state, the two column body sections (22) jointly support the crossbeam (1).

2. The vertical temporary support device for existing underground station construction according to claim 1, characterized in that: The hinged member comprises a rotating shaft (211) horizontally arranged on the upper edge of the column base section (21) and a connecting block (221) arranged on the lower edge of the column shaft section (22). The connecting block (221) is rotatably connected to the rotating shaft (211). When the column shaft section (22) is swung to a vertical state, the lower end surface of the column shaft section (22) abuts against the upper end surface of the column base section (21).

3. The vertical temporary support device for existing underground station construction according to claim 2, characterized in that: A mounting seat (222) is provided at the lower end of the column section (22); one end of the telescopic driving member (3) is hinged to the inner side wall of the column base section (21); the other end of the telescopic driving member (3) is hinged to the mounting seat (222); when the telescopic driving member (3) contracts, the column section (22) swings upward with the rotating shaft (211) as the axis.

4. The vertical temporary support device for existing underground station construction according to claim 1, characterized in that: A sliding connection member (4) is provided at the upper end of the column section (22), and a sliding groove (11) is provided on the lower end surface of the crossbeam (1), wherein the length direction of the sliding groove (11) is consistent with the length direction of the crossbeam (1).

5. The vertical temporary support device for existing underground station construction according to claim 4, characterized in that: The sliding connection member (4) comprises a T-shaped slider (41) slidably connected to the sliding groove (11) and a collar (42) rotatably connected to the upper edge of the column section (22); the T-shaped slider (41) and the collar (42) are fixedly connected.

6. A method for installing a vertical temporary support device for existing underground station construction as claimed in claim 3, characterized in that: The following steps are involved: S1: Move the temporary support device to the construction location, and then fix the two column base sections (21) on the construction ground; S2: Then, the telescopic driving members (3) in the two column base sections (21) are simultaneously activated, the telescopic driving members (3) are contracted, and the column body section (22) is driven to swing upward around the axis of the rotation axis (211). When the column body section (22) swings upward to a vertical state, the lower end surface of the column body section (22) abuts against the upper end surface of the column base section (21), and the two column body sections (22) are respectively moved to the two ends of the cross beam (1), and the upper end surface of the column body section (22) abuts against the lower end surface of the cross beam (1).

7. The method for installing a vertical temporary support device for existing underground station construction according to claim 6, characterized in that: The telescopic drive member (3) is detachably connected to the column base section (21), and the connecting block (221) is detachably connected to the rotating shaft (211); in the step S2, after the column body section (22) is swung to a vertical state, the connection between the lower end of the telescopic drive member (3) and the column base section (21) is removed, and the lower end of the telescopic drive member (3) is vertically fixed on the construction ground, and then the connection between the connecting block (221) and the rotating shaft (211) is removed, and then the telescopic drive member (3) pushes the mounting seat (222) upward to drive the column body section (22) and the column base section (21) to separate, until the upper end surface of the beam (1) is pressed against the top of the wall.

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