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Bridge arch rib lifting and closing device

A bridge and arch rib technology, applied in the field of bridge arch rib lifting and closing devices, can solve the problem of high transportation risk, and achieve the effects of speeding up construction progress, reasonable stress, and easy control and adjustment of arch rib elevation and alignment.

Inactive Publication Date: 2020-12-15
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The arch rib support of this invention patent is erected on a barge, and the transportation risk is high, and this method adopts the construction method of arch first and beam later, which is not suitable for rigid tied arch bridges

Method used

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  • Bridge arch rib lifting and closing device
  • Bridge arch rib lifting and closing device
  • Bridge arch rib lifting and closing device

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Experimental program
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Effect test

Embodiment Construction

[0032] Such as figure 1 As shown, the present invention provides a device for lifting and closing bridge arch ribs, and the bridge includes a bridge deck system 1 and arch ribs.

[0033] The bridge deck system 1 is a segmental assembled structure, excluding the bridge deck pavement structure, which is composed of steel box longitudinal girders, middle beams, end beam T-shaped small longitudinal girders and bridge decks.

[0034] The arch rib includes an arch rib lifting section 201, two arch foot side arch ribs 202 and two arch rib closing sections 203; the arch rib lifting section 201 is located in the middle section of the bridge deck system 1; the two arch foot side arch ribs The ribs 202 are located at both ends of the bridge deck system 1 respectively; each arch rib 202 on the side of the arch foot is connected to one end of the arch rib lifting section 201 through an arch rib closing section 203 . The lifting section 201 of the arch rib and the two arch ribs 202 on the ...

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Abstract

The invention discloses a bridge arch rib lifting and closing device. Arch foot side arch ribs are assembled on an arch foot side arch rib assembling support; and an arch rib lifting section is assembled on an arch rib lifting section assembling support. The problem that in the prior art, arch rib sections of a main bridge part and an approach bridge interfere with each other during construction and cannot be constructed at the same time is solved; the arch foot side arch ribs and the arch rib lifting section can be installed at the same time, the construction period of the arch ribs can be shortened, and the construction progress is accelerated; the supporting height of the arch rib lifting section is lower than the designed elevation of the arch rib lifting section; and the arch rib hoisting section is hoisted and lifted to the designed elevation through a hoisting system. Compared with a traditional cable hoisting construction method, on one hand, the workload of aloft work is reduced; and on the other hand, the stability and the positioning precision of the hoisting system are high, the deformation of the arch ribs in the horizontal direction and the vertical direction in the hoisting process is reduced, the deviation rectifying amount of the arch rib mounting position is reduced, and the construction safety and the mounting precision are improved.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a lifting and closing device for bridge arch ribs. Background technique [0002] The arch rib is the skeleton of the main arch ring of the arch bridge. The existing installation methods of the arch rib can be roughly divided into: full-structure support construction method, swivel construction method and cable hoisting construction method. Among them, the full support construction method is suitable for arch bridges with small spans and no navigation requirements. The swivel construction method and the cable hoisting construction method have many high-altitude operations and high construction risks, and the construction of the arch rib must be completed after the main girder is completed. The construction time of key lines long. [0003] In the patent document with the publication number CN101672011A, a method for vertical lifting of steel pipe arch ribs is disclosed. In this ...

Claims

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Application Information

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IPC IPC(8): E01D21/06E01D21/00E01D4/00
CPCE01D21/06E01D21/00E01D4/00
Inventor 陈洪敏王敬宇赵龙杜伟张广东刘岭忠王国齐刘绍焕蒲有国谢佳佳任炎权王文炜许崇法宋伟豪
Owner SOUTHEAST UNIV
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