Temporary transverse bracing structure with adjustable internal force of h-shaped tower column and its construction method

Abstract

The invention relates to an H-shaped tower column inner force adjustable temporary cross supporting structure which comprises a cross supporting part and brackets fixed on tower columns on the two sides respectively. The cross supporting part is arranged on the brackets in a carrying mode. The cross supporting part comprises an abutting-connecting end in abutting connection with the tower column on one side and a pushing end opposite to the abutting-connecting end. A lifting-underlay object is inserted at the movable portion between the pushing end and the tower column on the other side. The pushing end is provided with a pushing part which enables the horizontal supporting part to move to the abutting-connecting end after being stressed. The invention further relates to a construction method of the temporary cross supporting structure. Time occupied by a tower crane during temporary cross supporting part mounting is saved, adjusting on pushing force during construction is convenient, cable bend tower construction is accelerated, temporary cross supporting part high-altitude welding workload is lowered, temporary cross supporting part disassembling difficulty is lowered, and high-altitude working safety risks are reduced. The H-shaped tower column inner force adjustable temporary cross supporting structure and the construction method thereof can be used in horizontal temporary cross supporting part construction in bridge construction.

Description

Technical field [0001] The invention relates to bridge construction, in particular to a temporary transverse bracing structure with adjustable internal force of an H-shaped tower column and a construction method thereof. Background technique [0002] With the large-scale construction of highway and railway express network in my country, a large number of bridges across rivers, rivers and seas have been built one after another. Cable-stayed bridges are one of the most important types of long-span bridges. For the construction of the inclined tower column of the H-shaped high tower, with the increase of the construction height of the inclined tower column, the tensile stress of the concrete outside the lower root of the cantilever part of the tower column gradually increases. At the same time, the cantilever end of the inwardly inclined tower column is inclined to The external displacement is also increasing. In order to control the linear and internal force of the tower column to ...

AI Technical Summary

Problems solved by technology

[0005] 1. The tower crane can only loosen the structure after welding. The whole hoisting process takes a long time for the tower crane, which seriously affects the construction of the main tower column and delays the construction period.

[0006] 2. The two ends of the temporary horizontal brace need to be welded with the backing plate and the embedded parts of the cable tower. The welding workload is relatively large, and all welding is performed at high altitudes, which poses safety risks for high-altitude operations

[0007] 3. After the temporary horizontal brace is installed, it is difficult to adjust the jacking force

However, the end of the conventional temporary horizontal brace is welded to the backing plate and embedded parts of the cable tower. Large, and the safety risk is greater when cutting the weld seam

[0008] 4. When the temporary horizontal brace is removed, both ends of the brace are welded to the embedded parts of the cable tower, and the construction conditions change greatly during removal and installation. It is difficult to accurately calculate the internal force of the horizontal brace during removal, so it is difficult to use oil roof Carrying out the method of unloading first and then dismantling, the demolition work is more difficult, and the safety risk is greater

Images