A swivel construction method of an arch bridge under the condition of steep slope terrain

A construction method and slope technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of high construction difficulty and safety risks, large amount of mountain excavation, and long construction period, so as to avoid mountain excavation and safety. The effect of ecological damage, reduction of high-altitude work, and shortening of construction period

Active Publication Date: 2022-01-25
SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art such as construction difficulty and safety risk, long construction period, large amount of mountain excavation, and high construction cost in the construction of an arch bridge under steep slope terrain conditions, and provide a steep slope terrain condition Construction method of swivel arch bridge under

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  • A swivel construction method of an arch bridge under the condition of steep slope terrain
  • A swivel construction method of an arch bridge under the condition of steep slope terrain
  • A swivel construction method of an arch bridge under the condition of steep slope terrain

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Embodiment 1

[0036] Such as figure 1 As shown, a kind of arch bridge under the condition of steep slope terrain (suspension rod, deck girder not shown), the main span is 252m, the whole bridge is provided with two arch ribs 1, and several cross braces 7 are arranged between the two arch ribs 1 , the bridge spans a deep valley, and the mountains on both sides of the bridge site are typical steep slope terrains in mountainous areas. The large height difference leads to a large amount of construction excavation, the construction site is limited, and the difficulty of construction increases sharply.

[0037] The arch bridge swivel construction method under a kind of steep slope terrain condition according to the present invention comprises the following steps:

[0038] a. According to the design, the foundation pit is excavated at the corresponding position of each arch rib 1 and the lower turntable 2, the translation mechanism and the upper turntable 3 are constructed, and the corresponding ...

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Abstract

The invention relates to the technical field of bridge engineering, in particular to a swivel construction method of an arch bridge under steep slope terrain conditions. This method makes use of terrain conditions according to local conditions, transfers the assembly of arch ribs to the ground, and performs single-rib rotation and closure, avoids aerial assembly at the design installation position, reduces high-altitude operations, reduces construction risks, and improves segmental assembly positioning accuracy and construction. Quality, the single-rib swivel can reduce the height of the assembled bracket, reduce the structural weight of the swivel construction, save construction materials, and at the same time avoid a large number of mountain excavations and ecological damage, effectively reduce construction difficulty and safety risks, shorten the construction period, and maximize It can reduce the restriction of topography on the project to a certain extent, and has good economy. It has great promotion significance in the steep slope terrain of complex mountainous areas.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a swivel construction method of an arch bridge under steep slope terrain conditions. Background technique [0002] With the gradual extension of the transportation network to the central and western regions, more and more bridge projects spanning deep mountain canyons in complex and dangerous mountainous areas, arch bridges are the most suitable bridge type for construction. However, due to the complex terrain conditions and harsh construction environment, the difficulty of construction and the sharp increase in construction costs have brought huge challenges to the construction. [0003] At present, medium and large-span arch bridges in mountainous areas can generally be constructed by cable hoisting, cable-stayed buckle-hanging method or swivel construction method. Under the steep slope terrain conditions in complex mountainous areas, the abutment is set on the slop...

Claims

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Application Information

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IPC IPC(8): E01D21/08
CPCE01D21/08
Inventor 牟廷敏卢冠楠李畅田波谭邦明陈松洲梁健王阅章范碧琨李鸣王戈康玲孙才志郑旭峰刘振宇赵艺程
Owner SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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