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Combined assembling construction method of steel truss girder

A construction method and technology of steel truss girder, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of difficult installation and dismantling, high safety risk, low operation efficiency, etc. The effect of low risk and good safety

Inactive Publication Date: 2018-08-17
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP NO 4 ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high safety risk, low operation efficiency, difficult installation and dismantling, and poor economy in the traditional construction method, the present invention provides a steel truss girder joint assembly construction method

Method used

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  • Combined assembling construction method of steel truss girder
  • Combined assembling construction method of steel truss girder
  • Combined assembling construction method of steel truss girder

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0016] Specific implementation mode one: combine figure 1 and figure 2 To illustrate this embodiment, this embodiment includes the following steps:

[0017] a. Use the tower crane 1 to assemble the guide beam 4 and the steel truss beam at a certain interval, and push a certain distance away from the tower crane 1;

[0018] b. Set up a girder erecting crane 2 above the assembled steel truss girder, push a certain distance away from the tower crane 1 and install a beam transport vehicle 3 on the pushing platform;

[0019] Preferably, after erecting the girder crane 2 above the assembled steel truss girder, push it away from the tower crane 1 for a distance of 4 internodes;

[0020] Steel rails are laid on the pushing platform, and there are four driving wheels matching the rails on the beam transporting vehicle 3, each driving wheel is driven by a motor, and a generator is provided on the beam transporting vehicle 3, and the generator controls the power of each driving wheel ...

specific Embodiment approach 2

[0024] Specific implementation mode two: combination figure 1 To illustrate this embodiment, in step a of this embodiment, the tower crane 1 is used to splice 2.5 internode steel truss girders.

[0025] Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Specific implementation mode three: combination figure 1 To illustrate this embodiment, the splicing of 2.5 internode steel truss girders in this embodiment is: first assemble 1.5 internode steel truss girders, push one internode away from the tower crane 1, and then use the tower crane to 1 Assemble 1 internode steel truss beam.

[0027] Other compositions and connections are the same as those in the second embodiment.

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Abstract

The invention discloses a combined assembling construction method of a steel truss girder, and relates to the field of bridge engineering. The combined assembling construction method aims at solving the problems of high safety risk, low operation efficiency, difficult installation and removal, and poor economy in a traditional construction method. The combined assembling construction method comprises the following steps that a guide beam and the steel truss girder are assembled by using a tower crane, and the guide beam and the steel truss girder are pushed by a certain distance to the direction away from the tower crane; b, a girder erection crane is erected above the assembled steel truss girder, the assembled steel truss girder is pushed a certain distance away from the tower crane anda beam transport vehicle is installed on a pushing platform; and c, the rest of the steel truss girder is transported to a transportation platform through the tower crane and transported to the girdererection crane position through a trolley, and the splicing of the steel truss girder is completed by using the girder erection crane. According to the combined assembling construction method of thesteel truss girder, the pushing frequency of the steel truss girder is reduced, the cantilever working condition of the steel truss girder is reduced, and the construction risk is controllable. The combined assembling construction method of the steel truss girder is suitable for bridge construction.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a construction method for joint assembly of steel truss girders. Background technique [0002] In the assembly construction of traditional steel truss girder bridges, gantry cranes are usually used to assemble steel truss girders. In high-pier, long-span, and long-connected steel truss bridges, due to the high pier body, the height of the gantry crane is high, and the safety factor is low during construction, and the safety risk is large. In long-span steel truss girder bridges, if one assembly is not enough to assemble the entire span steel truss girders, the cantilever condition of the steel truss girders will take a long time and the safety risk will be high; Gantry cranes or double gantry cranes assemble steel truss girders to meet the mechanical efficiency of transportation and hoisting. It is difficult to assemble steel truss girders by traditional gantry cranes in high-...

Claims

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Application Information

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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 赵耀王宏毅盖青山林再志朱雪松李朝智徐兴源
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP NO 4 ENG