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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

Active Publication Date: 2016-03-30
SHANDONG TRAFFIC PLANNING DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional temporary anchorage uses prestressed steel strands to anchor the No. 0 block. The unbalanced force during the cantilever construction of long-span cable-stayed bridges is relatively large, requiring more steel strands, the construction is more complicated, and it cannot resist horizontal forces.

Method used

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

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Embodiment Construction

[0032] Such as figure 1 As shown, the main components of the cable-stayed bridge include a cable tower 23 and a box girder 1. There are generally two cable towers 23, which are mainly used for fixing the steel cables of the cable-stayed bridge. A cable tower beam 231 is arranged between the two cable towers 23, that is, the cable tower beam 231 connects the two cable towers 23 into an approximate A-shaped structure.

[0033] Such as figure 2 As shown, the upper end of the cable tower beam 231 is provided with a permanent support 2312, and a pad stone 2311 is arranged between the permanent support 2312 and the cable tower beam 231; The end face is used for laying the road surface, usually its two sides, that is, the two sides of the bridge are side steel boxes 11, which need to be fixedly arranged on the permanent support 2312 in the specific installation.

[0034] In the specific construction and installation process, when the box girder is constructed by the cantilever met...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/10E01D11/04
CPCE01D21/10
Inventor 徐常泽徐召陈国红白光耀管锡琨王洺鑫董晓
Owner SHANDONG TRAFFIC PLANNING DESIGN INST
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