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A construction method for two-way inclined V-shaped bridge towers of a cable-stayed bridge without back cables

A construction method and two-way tilting technology, which is applied in cable-stayed bridges, bridges, bridge construction, etc., can solve the problems of difficult control of pouring quality and line shape, high load-bearing capacity requirements, and large consumption of support formwork, etc., to improve construction quality , Simplify the construction process and ensure the effect of construction quality

Active Publication Date: 2021-02-19
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP 1ST ENG
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Problems solved by technology

At present, for medium and low tower columns, the construction of full-wall support and overturning is generally used, that is, the full-wall steel pipe support is erected from the ground to the top of the tower, and then the formwork, pouring, maintenance and other constructions are carried out. However, this method is not suitable for the construction of tall tower columns. The bracket formwork used consumes a lot of energy, has a long construction period, and requires a lot of manpower. The erection of steel pipe brackets has high requirements on the bearing capacity of the foundation, and the safety risk is relatively large. For large-volume concrete structures, there are many pouring sections, which are difficult for the pouring quality and alignment. control, there are great limitations to the construction of bridges and high piers in mountainous areas

Method used

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  • A construction method for two-way inclined V-shaped bridge towers of a cable-stayed bridge without back cables
  • A construction method for two-way inclined V-shaped bridge towers of a cable-stayed bridge without back cables
  • A construction method for two-way inclined V-shaped bridge towers of a cable-stayed bridge without back cables

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Embodiment Construction

[0036] The specific implementation manner of the present invention will be described below with reference to the accompanying drawings. Such as Figure 1 to Figure 7 Shown: a construction method of a two-way inclined V-shaped bridge tower of a cable-stayed bridge without back cables, which is carried out in sequence according to the following steps: construction preparation, installation of rigid skeleton and positioning of cable guides, construction of lower tower columns, assembly of hydraulic climbing modules, and Simultaneous construction of tower columns and towers in the cable area, construction of the closing section of the tower top and removal of formwork and cross braces,

[0037] The synchronous construction steps of the tower column and cable tower in the cable area are composed of four steps: pouring concrete in sections, tensioning prestress, tensioning cable stays, and erecting brackets and cross braces.

[0038] The construction preparation steps are as follow...

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Abstract

The invention discloses a construction method for a two-way inclined V-shaped bridge tower of a cable-stayed bridge without back cables, which is characterized in that: the method is carried out in sequence according to the following steps: construction preparation, stiff skeleton installation and cable guide positioning, and lower tower column construction , hydraulic climbing module assembly, synchronous construction of tower columns and towers in the cable area, construction of the closing section on the top of the tower and removal of formwork and cross braces. It consists of four steps: tensile prestressing, erection of brackets and cross braces, and tensioning of stay cables.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a construction method for a two-way inclined V-shaped pylon of a cable-stayed bridge without back cables. Background technique [0002] As a cable-tower-beam composite system structure, the cable-stayed bridge has better spanning capacity than beam bridges and arch bridges, lower construction cost than suspension bridges, good mechanical properties and beautiful lines, and plays an important role in modern bridge construction. In recent years, with the improvement of bridge design theory and the improvement of bridge aesthetic status, a series of special-shaped cable-stayed bridges with beautiful shapes and novel structures have been gradually built. Among them, cable-stayed bridges without back cables have become a beautiful landscape in urban landscape bridges. . Compared with the traditional cable-stayed bridge with two towers and two cable planes, cable-stayed bridges with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D11/04E01D101/28
CPCE01D11/04E01D21/00E01D2101/28
Inventor 安路明赵健朱杰李春江张广涛迟荣益彭志川张振海王德文徐溢滨袁伟新沙权贤孙长志
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP 1ST ENG
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