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Assembling and lifting method of half-span skeleton of tied arch bridge

A technology for tie-bar arch bridges and hoisting methods, which is applied to bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as complex stress and deformation of arch ribs, long construction time, and unimpeded waterways, so as to shorten the construction period, Guaranteed construction accuracy and easy precision control

Active Publication Date: 2014-09-17
THE SECOND CONSTR OF CTCE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method must use temporary steel cables to balance the horizontal thrust of the arch foot, and the stress and deformation of the arch ribs are complex during the construction stage, and the construction requirements are extremely high. If this method is used for construction, the construction time on the waterway is still too long, which will affect the smooth flow of the waterway

Method used

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  • Assembling and lifting method of half-span skeleton of tied arch bridge
  • Assembling and lifting method of half-span skeleton of tied arch bridge
  • Assembling and lifting method of half-span skeleton of tied arch bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 Half-span hoisting tie rod arch bridge

[0037] The half-span hoisting tie-bar arch bridge of the present embodiment, as figure 1 and figure 2As shown, it includes bridge piers 1 located on both banks of the river, arch feet 2 located on bridge piers 1, arch ribs 3 and bridge deck stiff skeleton 4 that span across the river and are connected to the arch feet 2 on both sides of the river, and erected on the The bridge deck 40 on the bridge deck stiff frame 4. The stiff frame 4 of the bridge deck is located directly below the arch rib 3 . The arch rib 3 is formed by welding and fixing a plurality of arch rib segment prefabricated end to end, and is divided into a first arch rib segment 31 , a second arch rib segment 32 and a third arch rib segment 33 . One end of the second arch rib section 32 is embedded in the arch foot 2 away from the river bank, and is located above the land. One end of the third arch rib section 33 is embedded in the arch foot 2 clo...

Embodiment 2

[0039] Embodiment 2 Assembling and hoisting method of half-span frame of tied-rod arch bridge

[0040] The method for assembling and hoisting the half-span skeleton of the tie-bar arch bridge of the present embodiment is the construction method of the half-span hoisting tie-bar arch bridge of Embodiment 1, and the specific steps are as follows:

[0041] A. Set tire racks on the shore near the bridge to be erected. The first arch rib section 31 and the first bridge deck stiff skeleton section 41 are assembled and formed.

[0042] Assembling and forming of the first arch rib section 31: firstly transport the prefabricated arch rib section to the construction site. like Image 6 and Figure 7 As shown, the tire frame is set on the bank of the construction site according to the shape and size of the first rib section 31, and the prefabricated parts of the rib section are erected horizontally on the tire frame to assemble the first rib section 31. During assembly, the shape and...

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Abstract

The invention relates to an assembling and lifting method of a half-span skeleton of a tied arch bridge, which comprises the following steps that: A. an arch rib section perform rack and a deck stiff skeleton section perform rack are erected on a jig to be assembled into a first arch rib section and a first deck stiff skeleton section; B. the first arch rib section is lifted onto an assembly support, and a lifting rod is arranged between the first arch rib section and the first deck stiff skeleton section to be assembled into a half-span lifting bridge skeleton; C. the construction of piers and arch springing is carried out, and a second arch rib section, a second deck stiff skeleton section, a third arch rib section and a third deck stiff skeleton section are built on the arch springing; and D. the half-span lifting bridge skeleton is lifted over a riverway for folding installation. The invention relates to the technical field of bridge construction. According to the assembling and lifting method of the half-span skeleton of the tied arch bridge, a support does not need to be erected, the number of closure of navigation is few, the time of closure of navigation is short, the horizontal thrust of the arch springing can be well controlled, and the construction precision is high.

Description

technical field [0001] The invention relates to a construction method of an under-supported steel pipe tied arch bridge, which belongs to the technical field of bridge construction. Background technique [0002] At present, my country is actively implementing the upgrading and renovation project of inland waterways, and vigorously promoting the construction of high-level waterway networks. The tied arch bridge combines the two basic structural forms of the arch and the beam to bear the load together, and fully exerts the structural performance and combined effect of the beam under bending and the arch under compression, and is widely used in the construction of new bridges in waterways. [0003] Most of the tied arch bridges adopt construction methods such as full support method, less support method, cable hoisting method, integral hoisting method, single-piece arch rib integral hoisting method, etc. The full support method and the less support method are to erect supports ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
Inventor 刘为李士济吴曙光欧阳石耿庆祥童建军高锦胜贾阿龙查浩杰王雪能
Owner THE SECOND CONSTR OF CTCE GROUP
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