Construction method of longitudinal moving tied-arch bridge

A tie-bar arch bridge and construction method technology, applied in the direction of arch bridges, bridges, bridge forms, etc., can solve the problems of being unable to accommodate large-scale hoisting machinery and equipment, and achieve the effect of strong rigidity, not easy to deform, and optimized structure

Inactive Publication Date: 2018-05-08
SICHUAN COLLEGE OF ARCHITECTURAL TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the long-span steel pipe arch bridge spans the existing railway hub station, due to the requirements of railway electrification safety regulations and railway operating conditions, it is impossible to station large-scale hoisting machinery and equipment

Method used

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  • Construction method of longitudinal moving tied-arch bridge
  • Construction method of longitudinal moving tied-arch bridge
  • Construction method of longitudinal moving tied-arch bridge

Examples

Experimental program
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Embodiment 1

[0038] like figure 1 , figure 2 As shown, the construction method of longitudinally moving tie-bar arch bridge, with the help of longitudinally moving track, dragging device, anti-rollover device and three-dimensional fine-tuning system erected on the site, the arch ribs and cross braces assembled outside the site are moved longitudinally to the design position The construction method first sets up the longitudinal moving track structure, installs the overall longitudinal moving device of the tie-bar arch bridge, and at the same time assembles part of the arch ribs of the tie-bar arch bridge. Arch rib concrete, and finally remove the auxiliary device for longitudinal movement; the specific steps include the following:

[0039] Step S1: Set up temporary support piers for moving beams and build steel truss beams for longitudinal moving tracks to complete the construction of longitudinal moving tracks;

[0040] Step S2: install a plurality of weight shifters on the longitudina...

Embodiment 2

[0047] This embodiment takes the construction of an inner arch bridge in a railway station in Hunan as an example, and further optimizes it on the basis of the above embodiments. In this embodiment, the main bridge adopts a rigid frame concrete-filled steel pipe tied arch bridge with L=168m. The main bridge is 172 m long and 24 m wide. The longitudinal axis of the bridge and the railway cross 17 lanes at the railway hub station at an oblique angle of 29°. The main line is the main line of the electrified railway, with high traffic frequency and high shunting frequency of passenger and freight trains. There are many above-ground and underground pipelines on both sides of the station, and the construction site under the bridge is basically occupied by the traffic limit, which makes the project more difficult and technical. Due to the large-scale electrified railway station, the conventional cable crane segmental hoisting scheme cannot be implemented; the implementation method of...

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Abstract

The invention discloses a construction method of a longitudinal moving tied-arch bridge. After an assembled gantry crane lifts arch bridge steel crossbeams and arch rib supports are installed, in thearch rib lifting, longitudinal moving, splicing and butt joint processes, the gantry crane is used for conducting lifting, a heavy object is carried / jacked through a heavy object shifter installed ona longitudinal moving track so as to conduct longitudinal moving splicing installation, jacking sensors acquire the jacking displacement, a longitudinal moving sensor acquires the horizontal displacement, the jacking displacement and the horizontal displacement are fed back to a PLC control unit, and the PLC control unit unitedly controls the heavy object jacking and / or longitudinal moving condition in a coordinating mode. When a conventional cable crane segmental lifting scheme cannot be implemented, through the longitudinal moving track erected in a site, a dragging device, an anti-side-turndevice and a three-dimensional accurate adjustment system, arch ribs and cross braces which are integrally assembled outside the site are integrally and longitudinally moved to the designed position,and bridge construction can be finished guaranteeing both the quality and the quantity.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a construction method for a longitudinally moving tied-bar arch bridge. Background technique [0002] During the construction of long-span steel pipe arch bridges spanning existing railway hub stations, due to the requirements of railway electrification safety regulations and railway operating conditions, large-scale hoisting machinery and equipment cannot be stationed. In order to complete the installation of arch ribs and cross braces safely and efficiently, the arch ribs and cross braces must be assembled outside the site as a whole, and at the same time, vertical moving tracks are set up on the site, and the arch ribs and cross braces are moved longitudinally to the design position as a whole by using a pulling device. For example: "Shanxi Architecture", February 2014, Volume 40, Issue 6, P164-P165, article number: 1009-6825 (2014) 06-0164-03, "Research on the Overall Towin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D4/00G05B19/05
CPCE01D21/00E01D4/00G05B19/05
Inventor 李镇江王旭东
Owner SICHUAN COLLEGE OF ARCHITECTURAL TECH
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