Steel truss girder dragging and replacing method
A replacement method and steel truss girder technology, which is applied in bridges, bridge construction, bridge maintenance, etc., can solve the problems of difficult installation and disassembly of slideways, high frictional resistance of slideways, and low efficiency
Active Publication Date: 2021-01-22
WUHAN BRIDGE SPECIAL TECH CO LTD CHINA RAILWAY MAJOR BRIDGE ENG BUREAU +1
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Problems solved by technology
On the top of the bridge pier, the working position is narrow, the installation and disassembly of the traditional slideway is difficult, the frictional resistance of the slideway is large, the efficiency is low, and the use effect is difficult to guarantee
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[0037] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.
[0038] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0039] The embodiment of the present invention provides a method for dragging and replacing steel truss girders. A glideway is set under the existing steel truss girders, and the glide slides are used to...
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The invention relates to the technical field of bridge construction, and concretely relates to a steel truss girder dragging and replacing method. The method comprises the following steps: integrallylifting an existing steel truss girder of a bridge to a preset height, dismantling an original bridge support, arranging a pair of lower sliding ways under the existing steel truss girder, and arranging supporting frame temporary supporting rods at the two ends of the bottom face of each lower sliding way; respectively welding a pair of track beams on two sides of a lower chord of the existing steel truss girder, and matching the bottom surface of each track beam with the top surface of each lower slide way; removing temporary supporting rods of the supporting frame, and fixing the lower sliding ways through pier top heightened concrete; and after pier top elevation concrete curing is completed, pulling the track beams through traction equipment, enabling the track beams and the lower sliding ways to slide relatively, and dragging and replacing the existing steel truss girder. The lower sliding ways are arranged below the existing steel truss girder, the lower sliding ways are matchedwith external traction force, so that the existing steel truss girder stably slides on the sliding ways, dragging and replacing of the steel truss girder are achieved, operation is easy, and the construction efficiency is high.
Description
technical field [0001] The invention relates to the technical field of bridge construction, in particular to a method for dragging and replacing steel truss girders. Background technique [0002] With the development of society and economy, the railway operation is becoming more and more busy. Due to the long service life of some early-built railway steel bridges, some diseases have appeared to varying degrees. In order to maintain the safety of subsequent railway operations, the bridge needs to be reinforced and reconstructed. There are many, among which the dragging and changing of existing steel beams is widely used. [0003] When dragging and replacing existing steel truss girders, slideway technology plays a very important role. On the top of the bridge pier, the working position is narrow, the installation and disassembly of the traditional slideway is difficult, the frictional resistance of the slideway is high, the efficiency is low, and the use effect is difficult ...
Claims
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IPC IPC(8): E01D22/00E01D24/00
CPCE01D22/00
Inventor 贺海飞郑超吕磊魏国安江湧何雨吴运宏高盛锦曾智荣彭思谦詹应戴杰吉娄松芦亮李邵远吴芳
Owner WUHAN BRIDGE SPECIAL TECH CO LTD CHINA RAILWAY MAJOR BRIDGE ENG BUREAU