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Hoisting construction method for single-rib closure rope of large-span reinforced concrete arch bridge

A technology of reinforced concrete and construction methods, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as high construction costs, numerous equipment, and complicated procedures, and achieve reduced construction costs, less construction volume, and reduced construction height effect

Active Publication Date: 2013-02-06
中国铁工投资建设集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of construction technology is mature, and the quality of the built bridge is stable, but this method requires a long construction period, various working cables and equipment required, and complicated procedures, resulting in high construction costs.

Method used

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  • Hoisting construction method for single-rib closure rope of large-span reinforced concrete arch bridge
  • Hoisting construction method for single-rib closure rope of large-span reinforced concrete arch bridge
  • Hoisting construction method for single-rib closure rope of large-span reinforced concrete arch bridge

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] combined with Figures 1 to 4 The embodiment of the present invention is described further:

[0030] Before carrying out single-rib closing-long cable hoisting construction, it is necessary to determine the horizontal span of the arch rib, the height of the tower, the maximum hoisting weight, and the type of anchor in combination with the topography of the bridge site, landform and construction period. This embodiment is a single-span, single-piece arch rib, and the arch rib is a symmetrical 7-segment structure, including: an end segment, a middle segment, a middle segment, and a vault segment.

[0031] After the above preparatory work is completed, it will enter the single-rib closing-long cable hoisting construction stage, and the steps are as follows:

[0032] (1) Build towers on the local bank and the opposite bank respectively. The towers built on the local bank are the local towers, and the towers built on the opposite bank are the opposite bank towers. The local...

Embodiment 2

[0054] In this embodiment, the arch ribs are composed of four parallel pieces, and each arch rib is a symmetrical seven-section structure, including: an end section, a middle section, a middle two section, and a vault top section.

[0055] After the above preparatory work is completed, it will enter the single-rib closing-long cable hoisting construction stage, and the steps are as follows:

[0056](1) Build towers on the local bank and the opposite bank respectively. The towers built on the local bank are the local towers, and the towers built on the opposite bank are the opposite bank towers. The local towers are set on the pier tops of the junction piers of the local bank , the tower on the opposite bank is arranged on the top of the junction pier on the opposite bank, and the bottoms of the tower on the local bank and the tower on the opposite bank are hinged with the junction piers below them respectively, and the junction piers under the tower on the local bank and the to...

Embodiment 3

[0078] The arch ribs in this embodiment have two spans, both of which are single arch ribs, and each arch rib is a symmetrical seven-segment structure, including: an end segment, a middle segment, a middle segment, and a vault segment.

[0079] After the above preparatory work is completed, it will enter the single-rib closing-long cable hoisting construction stage, and the steps are as follows:

[0080] (1) Build towers on the local bank and the opposite bank respectively. The towers built on the local bank are the local towers, and the towers built on the opposite bank are the opposite bank towers. The local towers are set on the pier tops of the junction piers of the local bank , the tower on the opposite bank is arranged on the top of the junction pier on the opposite bank, and the bottoms of the tower on the local bank and the tower on the opposite bank are hinged with the junction piers below them respectively, and the junction piers under the tower on the local bank and ...

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Abstract

The invention discloses structure construction of an arch bridge and in particular relates to a hoisting construction method for a single-rib closure rope of a large-span reinforced concrete arch bridge; through the adoption of single-rib closure hoisting, the numbers of main ropes, buckling ropes and ground anchors are reduced by half, so that the equipment utilization rate is increased, the construction period is reduced, the cost is reduced, a single rib of the large-span reinforced concrete arch bridge is safely and rapidly closed, and obvious social benefits and economic benefits are obtained.

Description

technical field [0001] The invention relates to a hoisting construction method of an arch rib of an arch bridge, in particular to a hoisting construction method of a single-rib closing-long cable of a large-span reinforced concrete arch bridge. Background technique [0002] Arch bridge is a common structural form in bridges, which uses arch rings or arch ribs as the main load-bearing members in the vertical plane. At present, in the construction of arch bridges, according to whether supports are used, they are divided into construction methods with supports and construction methods without supports. When it is necessary to erect arch bridges in deep water, deep valleys or navigable rivers for arch rib construction, the cable hoisting construction method without brackets is often used. The segmental cantilevering of long-span reinforced concrete arch bridges adopts the double-rib closing method, that is, when the first arch rib is closed and the arch axis is corrected, and t...

Claims

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Application Information

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IPC IPC(8): E01D21/00
Inventor 李建华
Owner 中国铁工投资建设集团有限公司
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