CN-117286789-B - Device and method for adjusting axial distance of towers Liang Zongqiao

CN117286789BCN 117286789 BCN117286789 BCN 117286789BCN-117286789-B

Abstract

The application relates to a device and a method for adjusting the distance between towers Liang Zongqiao in the direction and belongs to the technical field of bridge construction. The adjusting device comprises a spacing adjusting component, wherein the spacing adjusting component is arranged between a steel girder and a tower column cross beam and is used for driving the steel girder to move towards a side span or a middle span direction, the spacing adjusting component comprises a first connecting component, a driving piece connected with the first connecting component and a second connecting component connected with the driving piece, the first connecting component is connected and arranged on the tower column cross beam, the second connecting component is connected and arranged on the steel girder, and the driving piece can move along a longitudinal bridge direction of the steel girder. The driving piece of the interval adjusting assembly can be utilized to drive the two sections of steel main beams to move, so that the size of the closure opening is adjusted, and closure work is facilitated.

Inventors

LIU XIULING
REN HONGCHANG
XIE GUOWU
WANG WENYANG
ZHANG TENG
TANG JIARUI
CHEN ZHONGYU
ZHONG JIWEI
WANG YUN
YANG JING
WANG KEBING

Assignees

中铁大桥局集团有限公司
中铁大桥科学研究院有限公司

Dates

Publication Date: 20260505
Application Date: 20230912

Claims (3)

1. A closure adjustment method, the method being characterized in that the method is performed by using a tower Liang Zongqiao to pitch adjustment device, the tower Liang Zongqiao to pitch adjustment device comprising: The device comprises a steel girder (10) and a tower column cross beam (11), a distance adjusting component, a pushing rod and a pushing rod, wherein the distance adjusting component is arranged between the steel girder (10) and the tower column cross beam (11) and used for driving the steel girder (10) to move towards a side span or a middle span direction, the distance adjusting component comprises a first connecting component, a driving piece connected with the first connecting component and a second connecting component connected with the driving piece, the first connecting component is connected with the tower column cross beam (11), the second connecting component is connected with the steel girder (10), the driving piece can move along a longitudinal bridge direction of the steel girder (10), the first connecting component comprises a first connecting seat (5) arranged on the tower column cross beam (11) and a backing stone (9) arranged at the lower end of the first connecting seat (5), the second connecting component comprises a connecting rod piece (2) connected with a second connecting seat (6) arranged at the bottom end of the steel girder (10), the driving piece comprises a connecting rod piece (2), the connecting rod piece is close to the first connecting seat (4) and the pushing rod (4) is connected with the pushing box (4) through a pin shaft (4), one end, close to the steel main beam (10), of the connecting rod piece (2) is hinged with the second connecting seat (6) through a third pin shaft (32), a limiting piece (8) is arranged in the pushing box (4) and used for limiting the connecting rod piece (2), the limiting piece (8) is a shoveling plate, and a jack (7) is arranged in the pushing box (4); The method comprises the following steps: When the steel girder (10) section above the main tower beam is erected, a spacing adjustment assembly is arranged, a first connecting seat (5) and a second connecting seat (6) are utilized to connect a connecting rod piece (2) with the second connecting seat (6) in a hinged mode, a pushing box (4) is connected with the first connecting seat (5) in a hinged mode, the pushing box (4) is connected with the connecting rod piece (2) in a hinged mode through a first pin shaft (1), a limiting piece (8) is arranged in the pushing box (4) so as to achieve the purpose of longitudinal limiting constraint of the cantilever erection steel girder (10), and four spacing adjustment assemblies are arranged on two tower column beams on the upstream and downstream of the side of a side span and the upstream and downstream of the middle span side in total; Before a mid-span closure section is fed into a closure mouth, pulling out shoveling plates in 2 pushing boxes (4) on the side span side, arranging adjusting jacks (7) in 2 pushing boxes (4) on the side span side, then pulling out the first pin shafts (1) on the side and the mid-span side, simultaneously pressurizing and pushing 2 jacks (7) in the pushing boxes on the side span side to a certain distance to the side span side, locking, pulling out shoveling plates with corresponding thickness in 2 pushing boxes on the mid-span side, and adjusting and shifting a steel girder (10) to the side span side to increase the size of the mid-span closure mouth; After the mid-span closure section is fed into the closure mouth, the jacks (7) in the side pushing box (4) are properly returned and locked to draw out the limiting piece (8) in the mid-span side pushing box, the adjusting jacks (7) are placed in the mid-span side pushing box and locked, the jacks (7) in the side pushing box are removed after oil return, 2 jacks (7) in the mid-span side pushing box are simultaneously pressurized to push a certain distance to the mid-span side, and a shoveling plate with corresponding thickness is drawn in the side 2 pushing boxes (4), so that the steel girder is adjusted and shifted to the mid-span side, and the size of the mid-span side closure mouth is reduced; After the middle span is formally closed, the jack (7) in the pushing box (4) is removed after oil is returned, the shoveling plate is removed, and finally the connecting rod piece (2) and the pushing box (4) are removed, and the formal damper is installed to complete the conversion of the structural system.
2. The closure adjustment method of claim 1, wherein: The pushing box (4) is hinged with the first connecting seat (5) through a second pin shaft (31).
3. The closure adjustment method of claim 1, wherein: The shoveling base plate is provided with a plurality of pieces, and the shoveling base plate is a steel plate.

Description

Device and method for adjusting axial distance of towers Liang Zongqiao Technical Field The application relates to the technical field of bridge construction, in particular to a device and a method for adjusting the spacing between towers Liang Zongqiao in the radial direction. Background The construction method of the large-span steel truss girder, the steel box girder and the combined girder cable-stayed bridge generally adopts a construction method of segmental cantilever hoisting, in the cantilever erection stage, due to unbalanced horizontal component force of stay ropes at two sides of a side midspan and incomplete symmetry of steel girder structures at two sides of the side midspan, in addition, the steel girders can generate longitudinal bridge deflection under the influence of wind load, temperature load, temporary load and other load in the cantilever construction process, the actual spacing between the steel girders is inconsistent with the preset spacing, in the steel girder midspan closure stage, the preset position often cannot meet the requirements during closure due to the fact that the spacing cannot be adjusted, for example, the preset position is narrower, collision or other adverse conditions can occur with the original steel girders during closure, and closure work is not facilitated. Disclosure of Invention The embodiment of the application provides a device and a method for adjusting the spacing of a tower Liang Zongqiao in the radial direction, which are used for solving the problems that in the related art, the spacing of a steel girder cannot be adjusted when a midspan is closed, and closure work is not facilitated. In a first aspect, there is provided an apparatus for adjusting the pitch of a tower Liang Zongqiao comprising: The interval adjusting assembly is arranged between the steel girder and the tower column cross beam and used for driving the steel girder to move towards the side span or the middle span; The interval adjustment assembly comprises a first connection assembly, a driving piece connected with the first connection assembly, and a second connection assembly connected with the driving piece, wherein the first connection assembly is connected with the tower column cross beam, the second connection assembly is connected with the steel main beam, and the driving piece can move along the longitudinal bridge direction of the steel main beam. In some embodiments, the first connection component comprises a first connection seat arranged on the tower beam and a filler stone arranged at the lower end of the first connection seat, and the second connection component comprises a second connection seat connected with the bottom end of the steel main beam. In some embodiments, the driving member includes a connecting rod member, and a pushing box connected to an end of the connecting rod member near the first connecting seat. In some embodiments, the pushing box is of a hollow structure, the connecting rod piece is hinged with the pushing box through a first pin shaft, and one end of the connecting rod piece, which is close to the steel main beam, is hinged with the second connecting seat through a third pin shaft. In some embodiments, the pushing box is hinged to the first connecting seat through a second pin shaft. In some embodiments, a limiting member is disposed in the pushing box and is used for limiting the connecting rod member. In some embodiments, the stop is a shoveling plate. In some embodiments, the shoveling plate is provided with a plurality of pieces, and the shoveling plate is a steel plate. In some embodiments, a jack is disposed within the pushing box. In a second aspect, a closure adjustment method is provided, which is implemented by the tower Liang Zongqiao pitch adjustment device, and includes the following steps: When the steel girder segment above the main tower beam is erected, a spacing adjusting component is arranged, the connecting rod piece is hinged with the second connecting seat by utilizing the first connecting seat and the second connecting seat, the pushing box is hinged with the first connecting seat, the pushing box is hinged with the connecting rod piece through a first pin shaft, a limiting piece shoveling plate is arranged in the pushing box so as to achieve the purpose of longitudinal limiting and restraining in the stage of erecting the steel girder by the cantilever, and four interval adjusting assemblies are arranged on two tower column cross beams at the upper and lower sides of the side span and the upper and lower sides of the middle span; before a mid-span closure section is fed into a closure mouth, pulling out shoveling plates in 2 pushing boxes on the side span side, arranging adjusting jacks in 2 pushing boxes on the side span side, then pulling out the first pin shafts on the side and the mid-span side, simultaneously pressurizing and pushing 2 jacks in the pushing boxes on the side span side for a certain distance towards t