Transverse deformation control device erected by wide-body steel beam

Abstract

The invention discloses a transverse deformation control device erected by a wide-body steel beam. The transverse deformation control device comprises a steel frame, rotating mechanisms and ropes, wherein the steel frame is arranged on the upper surface of steel beam sections; the rotating mechanisms are separately arranged on the edges of the two sides of top plates of the steel beam sections inthe transverse direction of a bridge; and one end of each rope is connected to the steel frame, the other end of each rope is correspondingly connected to the rotating mechanisms, and the rotating mechanisms can drive the corresponding rope to fold and unfold. The steel frame is arranged in the middle part of the steel beam sections to form an integrity structure, and rigidity of the integrity structure is improved to control deformation of the middle part of the steel beam sections; and at the same time, drawing force of each rope is adjusted through each rotating mechanism to change the deformation condition of the edges of the steel beam sections, so that deformation amount of the edges of the steel beam sections can be flexibly adjusted, the installed steel beam sections of a cantilever end and deformation of the steel beam sections lifted by a crane to be installed of the cantilever end reach unanimity, residual stress of welding of two steel beam sections is reduced at the maximum extent, convenience and flexibility of erection of the wide-body steel beam are realized, docking difficulty is reduced, and construction period is shortened.

Description

technical field [0001] The invention relates to the field of bridges, in particular to a lateral deformation control device for erecting wide-body steel girders. Background technique [0002] With the rapid development of the national economy, the traffic flow has increased sharply. In recent years, the country has vigorously accelerated the construction of high-speed railways, expressways, urban municipal roads and urban rail transit. In order to save bridge site resources, reduce investment, and protect the environment, more and more bridges are constructed jointly by road and railway (rail transit). Large, the steel structure is often used for the main girder of long-span bridges, and the width of the girder body is getting larger and larger. [0003] At some bridge sites where conditions permit, the construction of long-span steel main girder bridges usually adopts cantilever hoisting construction. On the next free segment, for the cantilever end and the hoisted segmen...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings in the prior art that the lateral relative deformation of the two segments cannot be corrected and docked through the code plate due to the increase in the width of the beam body, and to provide a wide-body steel beam erection Lateral deformation control device

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