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Rapid construction method for steel truss and steel box combined girder bridge in offshore height-limited and navigation-limited area

A construction method and steel girder technology, applied to truss bridges, bridges, bridge forms, etc., can solve the problems of not being able to meet navigation and aviation restrictions, many offshore operations, and long construction periods, so as to reduce the amount of offshore operations and reduce welding The effect of reducing the work load and saving the construction period

Pending Publication Date: 2021-11-05
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP
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  • Abstract
  • Description
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Problems solved by technology

[0002] For the working condition of the upper limit navigation area in the sea, and the main bridge crosses the channel and the channel is not allowed to be temporarily closed to navigation, the conventional jacking or horizontal swivel construction scheme will require more offshore operations, long construction period, high risk, and cannot meet the requirements of navigation. and aviation height limit requirements, therefore, the existing construction methods need to be improved

Method used

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  • Rapid construction method for steel truss and steel box combined girder bridge in offshore height-limited and navigation-limited area
  • Rapid construction method for steel truss and steel box combined girder bridge in offshore height-limited and navigation-limited area
  • Rapid construction method for steel truss and steel box combined girder bridge in offshore height-limited and navigation-limited area

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Embodiment Construction

[0034] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0035] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention Creation and simplification of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should no...

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Abstract

The invention provides a rapid construction method for a steel truss and steel box combined girder bridge in an offshore height-limited and navigation-limited area. The method mainly comprises the following steps that auxiliary piers are respectively constructed at two sides of a main navigation channel, wherein the auxiliary piers comprise a main pier, a transition pier and a temporary pier between the main pier and the transition pier, a steel beam connecting and guiding buffering device and steel beam three-way displacement adjusting equipment are installed on the tops of the auxiliary piers; and then side span construction, middle span construction, side span steel beam cantilever flange construction, closure and steel beam positioning are carried out. A non-total-section large-section installation method is adopted for the steel beam side span, a full-section large-section installation method is adopted for the steel beam middle span, the hoisting capacity of hoisting equipment can be fully utilized, and the specification of the hoisting equipment is reduced; the requirements of navigation and aviation height limitation can be met; the offshore operation amount can be reduced, and the environmental protection, safety and quality risks of offshore operation are reduced; rapid construction can be achieved, and the construction period is shortened.

Description

technical field [0001] The invention belongs to the technical field of girder bridge construction, and in particular relates to a rapid construction method of a steel truss steel box composite girder bridge in a sea-limited navigation area. Background technique [0002] For the working condition of the upper limit navigation area in the sea, and the main bridge crosses the channel and the channel is not allowed to be temporarily closed to navigation, the conventional jacking or horizontal swivel construction scheme will require more offshore operations, long construction period, high risk, and cannot meet the requirements of navigation. And aviation height limit requirements, therefore, the existing construction methods need to be improved. Contents of the invention [0003] In view of this, the present invention aims to overcome the defects in the prior art, and proposes a rapid construction method for steel truss and steel box composite girder bridges in sea-limited and ...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D6/00E01D2/04
CPCE01D21/00E01D6/00E01D2/04
Inventor 宋伟俊章耀林陈宁贤龚国锋曲江峰蒋小金于龙波朱林达郭万良连延金褚佳文霍艳雷李明泽张海顺赵多苍吴小雨朱永盛冯文园
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP
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