Temporary Anchorage System for Side Steel Box of Long-span Composite Beam Cable-Stayed Bridge

A large-span, steel box technology, applied in the direction of cable-stayed bridges, bridges, bridge forms, etc., can solve the problems of large-span cable-stayed bridge cantilever unbalanced force, unable to resist horizontal force, multiple steel strands, etc. , to achieve the effect of simple design and construction, good construction stability and low risk
CN104562944BActive Publication Date: 2016-03-30SHANDONG TRAFFIC PLANNING DESIGN INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG TRAFFIC PLANNING DESIGN INST
Publication Date
2016-03-30

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Abstract

The invention discloses a large span composite beam cable-stayed bridge side steel box temporary anchorage system and mainly solves the problems that the certain overturning torque is produced due to unbalanced load caused by own load, temporary load or unseating condition, and the certain horizontal or longitudinal push force is produced and applied to a main beam due to two-side asymmetric oblique cable tension force or wind load. Load tables are provided with steel tube concrete columns, first temporary supporting seats supporting side steel boxes temporarily are arranged on the steel tube concrete columns, and the unbalanced bending moment caused by own load, cable force or construction load can be resisted during construction; the horizontal force produced during the construction can be resisted through the connection of longitudinal steel baffling blocks connected to the side steel boxes in a bolted manner and rubber blocks of two sides of a cable tower crossbeam; second temporary supporting seats supporting the side steel boxes are arranged on a bridge tower crossbeam, steel tubes are arranged in the side steel boxes vertically, prestressed steel beams penetrate the steel tubes to anchor box girders to the bridge tower crossbeam, and the side steel boxes can be prevented from angular displacement during construction.
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Description

technical field

[0001] The invention relates to the technical field of construction and installation of long-span composite girder cable-stayed bridges, in particular to a temporary anchoring system for steel boxes on the side of long-span composite girder cable-stayed bridges. Background technique

[0002] The composite girder cable-stayed bridge is a cable-stayed bridge in which the main girder is a steel structure and the bridge deck system is a concrete structure, which is combined with the bridge deck system to bear the force together. It gives full play to the respective advantages of steel and concrete materials. In addition to its light weight of the main girder, stronger spanning capacity, less impact from shrinkage and creep, and more convenient construction, it is more and more widely used in modern bridge design.

[0003] During the cantilever construction process of the main girder of the composite girder cable-stayed bridge, the beams on both sides of the cable...

Claims

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