A biomimetic steel shoe support system for bridge walking-type jacking construction

Abstract

The present invention is a bionic steel shoe support system for a bridge walking type jacking construction, comprising a rubber pad, a pot-type rubber bearing steel box support and a hydraulic jack arranged in sequence from top to bottom, a support steel plate is arranged above the support end of the hydraulic jack, a hoop structure is arranged around the top of the support end of the hydraulic jack, the top of the hoop structure is connected to the support steel plate, the upper surface of the support steel plate is detachably connected to the lower surface of the steel box support; the hoop structure comprises a first semicircular hoop and a second semicircular hoop, the side wall of the second semicircular hoop is provided with a hoop stiffening plate, and the top of the first semicircular hoop is provided with a hoop limiting plate. This bionic steel shoe support system for the jacking construction can increase the contact area between the jack and the beam to be pushed, and reduce the damage to the main beam structure during the support process.

Description

Technical Field

[0001] The invention relates to the technical field of bridge structure construction by jacking method, in particular to a bridge walking type jacking construction jack bionic steel shoe support system. Background Art

[0002] In the construction of urban flyover bridges, it is inevitable that the proposed bridges will cross existing highways and railways, and the bridge construction process must not affect the normal operation of highway and railway traffic. When a new urban bridge needs to be used to cross an existing busy highway or rail operating line, some conventional bridge construction techniques cannot complete the construction of a new bridge across the existing operating line in a short period of time. At this time, in order not to interrupt the busy traffic operating line and minimize the impact on the existing traffic line, the jacking method is generally used for construction, that is, the prefabricated beam is guided by a steel guide beam and pushed longitudinally or transversely to the position required by the design using a jack to achieve crossing the existing route.

[0003] The top-pushing construction method refers to the construction method of prefabricating beams in sections at the rear prefabrication site along the longitudinal axis of the bridge, then connecting the prefabricated sections with the completed beam body, and then pushing the beam body forward out of the prefabrication site through a horizontal jack, and then continuing to prefabricate the next segment of the beam at the prefabrication site until the construction is completed. In mountainous areas, due to the limitations of construction sites and transportation conditions, the top-pushing construction method is a very competitive construction method in bridge construction. The top-pushing construction method can use simple equipment to build long and large bridges, with low construction costs, stable construction, segmented prefabrication of the main beam, and good structural integrity. Since the development of the top-pushing construction method, great improvements and developments have been made in the top-pushing accuracy, and great progress has also been made in the top-pushing capacity. However, for large-span bridges, during the cantilever top-pushing construction process, the jack will directly contact the beam body, with a small area, resulting in large local stress, which will cause the main beam structure to be damaged. Therefore, it is necessary to provide a support system between the jack and the main beam to solve such problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a bionic steel shoe support system for a bridge walking-type jacking construction jack, which can increase the contact area between the jack and the beam to be pushed and reduce the damage to the main beam structure during the support process.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A bridge walking type jacking construction bionic steel boot support system, characterized in that it comprises a pot-type rubber support and a hydraulic jack, the top surface of the pot-type rubber support is covered with a rubber pad, and the bottom of the pot-type rubber support is fixedly installed on the top surface of the steel box support;

[0007] A supporting steel plate is arranged above the supporting end of the hydraulic jack, a hoop structure is arranged around the top of the supporting end of the hydraulic jack, the top of the hoop structure is connected to the lower surface of the supporting steel plate, and the upper surface of the supporting steel plate is detachably connected to the lower surface of the steel box support;

[0008] The clamp structure includes a first semicircular clamp and a second semicircular clamp, the top end of the second semicircular clamp is fixedly connected to the lower surface of the supporting steel plate, the side wall of the second semicircular clamp is provided with a clamp stiffening plate, the top end of the clamp stiffening plate is fixedly connected to the lower surface of the supporting steel plate, and the clamp stiffening plate is vertically arranged to the supporting steel plate; a clamp limiting plate is provided on the top of the first semicircular clamp, the clamp limiting plate is arranged parallel to the supporting steel plate, and the clamp limiting plate is detachably connected to the supporting steel plate by bolts; first clamp wing plates are provided on both sides of the first semicircular clamp, and second clamp wing plates are provided on both sides of the second semicircular clamp, and the first clamp wing plates and the second clamp wing plates are detachably connected by bolts.

[0009] The upper surface of the rubber pad is in close contact with the lower surface of the beam to be pushed; the bottom of the hydraulic jack is fixedly installed on the upper surface of the pier top support block.

[0010] An elliptical hole is processed on the surface of the clamp limit plate, and the bolt passes through the elliptical hole and the supporting steel plate to achieve a fixed connection between the clamp limit plate and the supporting steel plate. The elliptical hole is used to adjust the distance between the first semicircular clamp and the second semicircular clamp when the bolt is in a non-tightened state.

[0011] An annular rubber layer is arranged between the side wall of the supporting end of the hydraulic jack and the inner wall of the hoop structure.

[0012] The first hoop wing plate and the second hoop wing plate have different lengths.

[0013] The steel box support is a prism structure with a larger upper portion and a smaller lower portion, and the steel box support is made by welding steel plates.

[0014] Three longitudinal stiffening plates and three transverse stiffening plates are arranged in the steel box support, and the three longitudinal stiffening plates and the three transverse stiffening plates are all arranged vertically.

[0015] The transverse dimension of the top of the steel box support is M longer than the width of the slideway stiffening rib of the steel beam bridge or the width of the web of the concrete bridge, and M is not less than 10 cm.

[0016] The beneficial effects of this bridge walking jacking construction jack bionic steel boot support system are as follows: the hoop structure is set on the periphery of the jack, and the jacking force of the jack is transmitted to the steel box support, and then the jacking force is transmitted to the beam to be jacked through the pot-type rubber support and rubber pad, thereby expanding the force area. The steel box support size is slightly larger than the steel beam bridge slideway stiffening rib or concrete bridge web width by more than 10cm in the horizontal direction, to ensure that even if the beam body is laterally deviated during the jacking process, this device can still play a role in force buffering and protection of the lifting position. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a bionic steel shoe support system of a bridge walking-type jacking construction jack according to the present invention.

[0018] Figure 2 It is a front view of a bionic steel shoe support system of a bridge walking-type jacking construction jack according to the present invention.

[0019] Figure 3 It is a side view of a bionic steel shoe support system of a bridge walking-type jacking construction jack according to the present invention.

[0020] Figure 4 It is a horizontal cross-sectional view of a bionic steel shoe support system of a bridge walking-type jacking construction jack according to the present invention.

[0021] Figure numbers in the specification: 1-rubber pad, 2-pot type rubber bearing, 3-steel box support, 4-hoop structure, 5-hoop stiffening plate, 6-hoop limiting plate, 7-support steel plate, 8-annular rubber layer, 9-bolt, 10-hydraulic jack, 11-beam to be pushed, 12-pier top support block, 13-first semicircular hoop, 14-first hoop wing plate, 15-second semicircular hoop, 16-second hoop wing plate. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments.

[0023] A bridge walking type jacking construction bionic steel boot support system, characterized in that it comprises a pot-type rubber support 2 and a hydraulic jack 10, the top surface of the pot-type rubber support 2 is covered with a rubber pad 1, and the bottom of the pot-type rubber support 2 is fixedly mounted on the top surface of a steel box support 3;

[0024] A support steel plate 7 is provided above the support end of the hydraulic jack 10, and a hoop structure 4 is provided around the top of the support end of the hydraulic jack 10. The top of the hoop structure 4 is connected to the lower surface of the support steel plate 7, and the upper surface of the support steel plate 7 is detachably connected to the lower surface of the steel box support 3;

[0025] The clamp structure 4 includes a first semicircular clamp 13 and a second semicircular clamp 15, the top of the second semicircular clamp 15 is fixedly connected to the lower surface of the supporting steel plate 7, and the side wall of the second semicircular clamp 15 is provided with a clamp stiffening plate 5, the top of the clamp stiffening plate 5 is fixedly connected to the lower surface of the supporting steel plate 7, and the clamp stiffening plate 5 is vertically arranged to the supporting steel plate 7; the top of the first semicircular clamp 13 is provided with a clamp limiting plate 6, the clamp limiting plate 6 is arranged parallel to the supporting steel plate 7, and the clamp limiting plate 6 is detachably connected to the supporting steel plate 7 by bolts 9; first clamp wing plates 14 are provided on both sides of the first semicircular clamp 13, and second clamp wing plates 16 are provided on both sides of the second semicircular clamp 15, and the first clamp wing plates 14 and the second clamp wing plates 16 are detachably connected by bolts 9.

[0026] In this embodiment, the upper surface of the rubber pad 1 is in close contact with the lower surface of the beam body 11 to be pushed; the bottom of the hydraulic jack 10 is fixedly installed on the upper surface of the pier top support block 12.

[0027] In this embodiment, an elliptical hole is processed on the surface of the clamp limit plate 6, and the bolt 9 passes through the elliptical hole and the supporting steel plate 7 to achieve a fixed connection between the clamp limit plate 6 and the supporting steel plate 7. The elliptical hole is used to adjust the distance between the first semicircular clamp 13 and the second semicircular clamp 15 when the bolt 9 is in a non-tightened state.

[0028] In this embodiment, an annular rubber layer 8 is provided between the side wall of the supporting end of the hydraulic jack 10 and the inner wall of the hoop structure 4 .

[0029] In this embodiment, the first clamp wing plate 14 and the second clamp wing plate 16 have different lengths.

[0030] In this embodiment, the steel box support 3 is a prism structure with a larger upper portion and a smaller lower portion, and the steel box support 3 is made by welding steel plates.

[0031] In this embodiment, three longitudinal stiffening plates and three transverse stiffening plates are arranged in the steel box support 3, and the three longitudinal stiffening plates and the three transverse stiffening plates are all arranged vertically.

[0032] In this embodiment, the transverse dimension of the top of the steel box support 3 is longer by M than the width of the slideway stiffening rib of the steel beam bridge or the width of the web of the concrete bridge, and M is not less than 10 cm.

[0033] Furthermore, the rubber pad 1 is pasted on the top surface of the pot-type rubber support 2. During the jacking construction process, the pot-type rubber support 2 can transmit and diffuse the structural stress caused by the rotation and displacement of the main beam, and has a good protective effect on the main beam body under construction. When the size of the steel box support 3 is slightly larger than the width of the steel beam bridge slideway stiffening rib or the concrete bridge web by more than 10 cm in the horizontal direction, it ensures that even if the beam body is laterally deviated during the jacking process, the device can still play a force buffering and protective role at the top position.

[0034] Furthermore, the length of the second clamp wing plate 16 is slightly longer than that of the first clamp wing plate 14. Through welding and bolt connection, the first semicircular clamp 13, the second semicircular clamp 15 and the supporting end of the hydraulic jack 10 form a whole. The support lightness can be improved by setting the clamp stiffening plate 5 and the clamp limit plate 6 step by step, and the supporting area of ​​the supporting end of the hydraulic jack 10 and the supporting steel plate 7 can also be improved. Furthermore, the supporting steel plate 7 and the steel box support 3 are detachably connected by bolts, so that the first semicircular clamp 13 and the second semicircular clamp 15 can be replaced more conveniently to adapt to different working conditions.

[0035] The annular rubber layer 8 disposed between the inner walls of the first semicircular hoop 13 and the second semicircular hoop 15 and the side wall of the supporting end of the pressure jack 10 can provide a buffering and protective effect to the structure.

[0036] Three longitudinal stiffening plates and three transverse stiffening plates are arranged inside the steel box support 3 to ensure the bearing capacity of the structure.

[0037] This kind of jacking construction jack bionic steel shoe support system should calculate the actual bridge structure, span, load, etc. before construction, and determine the size and structure of the steel box support 3 and the hoop structure 4 in combination with the size and structure of the pier and jack. All parts are welded and prefabricated in the factory, and then pasted and used on the construction site.

[0038] During construction, the bionic steel shoe support system of the bridge walking jacking construction jack of this embodiment is always installed on the vertical jack. When the vertical jack is lifted, the system is in contact with the beam body until the bridge walking jacking construction jack bionic steel shoe support system is removed after the jacking is in place.

[0039] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A bionic steel shoe support system for bridge walking jacking construction. Features: It comprises a pot-type rubber support (2) and a hydraulic jack (10), wherein the top surface of the pot-type rubber support (2) is covered with a rubber pad (1), and the bottom of the pot-type rubber support (2) is fixedly mounted on the top surface of a steel box support (3); A support steel plate (7) is arranged above the support end of the hydraulic jack (10), a hoop structure (4) is arranged around the top of the support end of the hydraulic jack (10), the top of the hoop structure (4) is connected to the lower surface of the support steel plate (7), and the upper surface of the support steel plate (7) is detachably connected to the lower surface of the steel box support (3); The hoop structure (4) comprises a first semicircular hoop (13) and a second semicircular hoop (15), the top end of the second semicircular hoop (15) being fixedly connected to the lower surface of the supporting steel plate (7), the side wall of the second semicircular hoop (15) being provided with a hoop stiffening plate (5), the top end of the hoop stiffening plate (5) being fixedly connected to the lower surface of the supporting steel plate (7), the hoop stiffening plate (5) being arranged vertically to the supporting steel plate (7); the top end of the first semicircular hoop (13) being fixedly connected to the lower surface of the supporting steel plate (7), the hoop stiffening plate (5) being arranged vertically to the supporting steel plate (7); A hoop limiting plate (6) is provided on the part, the hoop limiting plate (6) is arranged parallel to the supporting steel plate (7), and the hoop limiting plate (6) is detachably connected to the supporting steel plate (7) by means of bolts (9); first hoop wing plates (14) are provided on both sides of the first semicircular hoop (13), and second hoop wing plates (16) are provided on both sides of the second semicircular hoop (15), and the first hoop wing plates (14) and the second hoop wing plates (16) are detachably connected by means of bolts (9); The surface of the clamp limit plate (6) is processed with an elliptical hole, and the bolt (9) passes through the elliptical hole and the supporting steel plate (7) to achieve a fixed connection between the clamp limit plate (6) and the supporting steel plate (7), and the elliptical hole is used to adjust the distance between the first semicircular clamp (13) and the second semicircular clamp (15) when the bolt (9) is in a non-tightened state; The steel box support (3) is a prism structure with a larger top and a smaller bottom. The steel box support (3) is made by welding steel plates. The transverse dimension of the top of the steel box support (3) is longer by M than the width of the slideway stiffening rib of the steel beam bridge or the width of the web of the concrete bridge, and M is not less than 10 cm.

2. According to claim 1, a bridge walking type jacking construction bionic steel shoe support system, Features: The upper surface of the rubber pad (1) is in close contact with the lower surface of the beam body (11) to be pushed; the bottom of the hydraulic jack (10) is fixedly mounted on the upper surface of the pier top support block (12).

3. According to claim 1, a bridge walking type jacking construction jack bionic steel shoe support system, Features: An annular rubber layer (8) is provided between the side wall of the supporting end of the hydraulic jack (10) and the inner wall of the hoop structure (4).

4. According to claim 3, a bridge walking type jacking construction bionic steel shoe support system, Features: The first clamp wing plate (14) and the second clamp wing plate (16) have different lengths.

5. According to claim 1, a bridge walking type jacking construction bionic steel shoe support system, Features: Three longitudinal stiffening plates and three transverse stiffening plates are arranged in the steel box support (3), and the three longitudinal stiffening plates and the three transverse stiffening plates are all arranged vertically.

Images