Half-through space Y-shaped steel box arch bridge cable hoisting method

Abstract

The invention discloses a half-through space Y-shaped steel box arch bridge cable hoisting method. The method comprises the steps of 1, determining a half-through space Y-shaped steel box arch bridgecable hoisting system; 2, mounting the half-through space Y-shaped steel box arch bridge cable hoisting system; 3, hoisting a half-through space Y-shaped steel box arch bridge; and 4, dismantling thehalf-through space Y-shaped steel box arch bridge cable hoisting system. According to the arch rib structure characteristics of the half-through space Y-shaped steel box arch bridge, the three sets ofarch cable pieces are determined in the transverse direction of the bridge, the tower frames on the two banks adopt the cable and buckling tower integrated structure form, the occupied area is small,and a left bank main tower frame, a right bank main tower frame and main arch cable pieces are matched to hoist a main arch; a left bank auxiliary tower, a right bank auxiliary tower and auxiliary arch cable pieces are matched to hoist an auxiliary arch; hoisting is safe and orderly, and the stroke of a bearing cable is short; in addition, dismounting is orderly, interference among a hoisting cable, a traction cable and a main bearing cable is avoided, the construction risk is greatly reduced, and the construction quality is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of construction of a Y-shaped steel box arch bridge with a hollow space, and in particular relates to a cable hoisting method for a Y-shaped steel box arch bridge with a hollow space. Background technique [0002] Hoisting refers to the general term for the installation and positioning of equipment by cranes or hoisting mechanisms. In the process of overhaul or maintenance, various hoisting tools are used to lift equipment, workpieces, appliances, materials, etc., so that their positions change. The development of the cable hoisting system is the main measure used in the construction of long-span special-shaped bridges in V-shaped canyons. The role of the cable hoisting system is to install the permanent structure of the bridge. The arch ribs of the space Y-shaped steel box arch bridge in the space are single-variable and double-arched. Wind braces and deck beams are arranged between the double arch ribs. ...

AI Technical Summary

Problems solved by technology

The cable hoisting system is a temporary construction structure, but whether it can be safely and smoothly dismantled after the hoisting work of the bridge structure is completed affects the safety of the bridge construction and also affects the surrounding environment of the bridge

For the demolition of the complex cable hoisting system used in the construction of arch bridges without supports in the V-shaped canyon area, accidents caused by improper removal of temporary construction equipment continued one after another, which not only affected the progress of the project, but also caused certain economic losses, and also had adverse social impacts

At present, there is no complete, safe and standardized construction method for the installation and dismantling of the cable hoisting system for the construction of the space Y-shaped steel box arch bridge in the V-shaped canyon, which greatly affects the cable hoisting system of the V-shaped canyon. Wide application in the region

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