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A positioning method and positioning system for in-situ construction of steel truss beams

A positioning method and technology of steel truss girder, applied in bridges, truss bridges, bridge construction and other directions, can solve problems such as large installation errors, inaccurate positioning, errors, etc., achieve accurate positioning, increase safety, and facilitate monitoring and control. The effect of adjustment

Active Publication Date: 2021-11-23
山东潍莱高速铁路有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the bridge spans the existing railway construction, the frame pier is used as the bearing seat of the upper truss girder. The steel truss girder structure is a bridge structure commonly used in my country's transportation infrastructure construction, and is usually used for large or extra large span bridge structures; The methods of in-situ construction of truss beams usually include: (1) Drag-and-pull construction. This method usually installs a slide rail system on the steel truss section that has been constructed in the longitudinal bridge direction, and moves the steel truss beam to be constructed from The slide rail system is pushed up until the pier column is put in place, and the application range is wide; (2) Cantilever unit section assembly construction, this method usually starts from the two ends of the constructed steel truss beam, and assembles section by section outward (3) hoisting and in-place construction, this method is to directly hoist and install the steel truss girder on the pier after the assembly is completed, which is often used in the construction of small and medium-sized span steel truss girders; The positioning of the construction method is not accurate enough, and the installation in place requires multiple adjustments, and the installation error is large or even a mistake occurs

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  • A positioning method and positioning system for in-situ construction of steel truss beams
  • A positioning method and positioning system for in-situ construction of steel truss beams
  • A positioning method and positioning system for in-situ construction of steel truss beams

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Embodiment 1

[0061] The positioning method and positioning system for in-situ construction of steel truss girders in Embodiment 1 of the present invention are used for the construction of steel truss girders that span existing railways and the surrounding terrain is complex. During construction, a sliding support is installed on one side of the longitudinal bridge direction. Two slideway beams are installed on the sliding support, and the slideway beams are respectively connected to the center of the adjacent pier caps. The positioning method for in-situ construction includes the following steps: S1. Install two slideway beams on the sliding support, and monitor the positioning of the slideway beams: set a contour benchmark under the slideway beams, The contour datum is the second reflective plate of the horizontal contour installed on the sliding bracket, and the first distance measuring sensor is installed on the slideway beam, and the first distance measuring sensor is a laser distance m...

Embodiment 2

[0077] Example 2 of the present invention is the construction of 1-(120+82)m steel truss girders on piers No. 31-33 of the Qingrong Railway Extra Large Bridge on the Weilai Right Line, which belongs to the construction of extra-large bridges. Due to the crossing of the existing railway, the construction site environment is complex , it is designed to install a sliding support 2 on one side of the longitudinal bridge direction. Two slideway beams 1 are installed on the sliding support 2. The slideway beams 1 are respectively connected to the center of the adjacent pier cap, and the steel truss girder is along The slideway beam 1 is moved laterally and placed in place. Therefore, during the construction process, the positioning method of the steel truss beam in place construction includes the following steps:

[0078]S1. Install two slideway beams 1 on the sliding support, and monitor the positioning of the slideway beams 1: set a contour benchmark below the slideway beam 1, and ...

Embodiment 3

[0095] Embodiment 3 of the present invention provides a positioning system for in-situ construction of steel truss girders, including: a main control module, the main control module is respectively connected with the slideway beam installation positioning module, the steel truss girder transfer positioning module, and the steel truss girder lateral movement The positioning module, the steel truss girder drop beam positioning module, and the steel truss girder drop beam in-position positioning module communicate with each other;

[0096] The slideway beam installation and positioning module is used for positioning the slideway beam installation position. The slideway beam installation and positioning module includes a first distance measuring sensor and a second reflector, and the first distance measurement sensor measures the distance from the second reflector. transmit the value to the master control system;

[0097] The steel truss girder transfer and positioning module is u...

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Abstract

A positioning method for steel truss girder in-situ construction, relating to the technical field of concrete pouring, including position monitoring of slideway beam installation position, position monitoring of steel truss girder transfer, position positioning monitoring of steel truss girder lateral movement, steel truss girder falling beam The location monitoring of the steel truss girder and the position location monitoring of the steel truss girder falling in place. The invention monitors the synchronization of the two ends of the steel truss girder, the inclination of the steel truss girder, the accuracy of the drop beam position of the steel truss girder, etc. during the lateral movement of the steel truss girder, and timely adjusts the steel truss girder. Guarantee the positional accuracy of the steel truss girder traversing construction, increase the stability and safety of the construction process, and avoid increasing the construction cost due to excessive positional deviation.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a positioning method and a positioning system for in-situ construction of steel truss girders. Background technique [0002] When the bridge spans the existing railway construction, the frame pier is used as the load-bearing seat of the upper truss girder. The steel truss girder structure is a bridge structure commonly used in China's transportation infrastructure construction, and is usually used for large or extra-large span bridge structures; The methods of in-situ construction of truss beams usually include: (1) Drag-and-pull construction. This method usually installs a slide rail system on the constructed steel truss girder section in the longitudinal bridge direction, and moves the steel truss girder to be constructed from The slide rail system is pushed up until the pier column is lifted and the beam is in place, which has a wide range of applications; (2) Cant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D21/06E01D6/00E01D101/30
CPCE01D6/00E01D21/00E01D21/06E01D2101/30
Inventor 孙洪斌温登钦杨青原陈有冲张方敏杨玉海仇传佳吕伟
Owner 山东潍莱高速铁路有限公司