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Longitudinal horizontal movement method for super-long super-heavy bridge components

A technology for bridges and components, applied in the field of longitudinal translation of super-long and super-heavy bridge components, which can solve problems such as high design standards of track foundations, threats to the overall stability of steel truss girder longitudinal movement, and limited by site space, etc., to achieve the bearing capacity of track foundations The effect of low requirements, low requirements for the carrying capacity of a single device, and low investment in procurement and construction

Inactive Publication Date: 2020-01-21
CHINA RAILWAY SHANQIAO GRP CO LTD +1
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AI Technical Summary

Problems solved by technology

The lifting method of two large gantry cranes has unfavorable factors such as high requirements on the carrying capacity of a single equipment, large equipment investment, long equipment procurement and installation period, and limited space on the site; the simply supported lifting method of four rail-type trolleys has a single Unfavorable factors such as high requirements on the carrying capacity of the equipment, high design standards of the track foundation, large construction investment, long construction period, and low safety factor of equipment operation
[0003] In actual operation, it may be considered to increase the number of rail-mounted trolleys to reduce the requirements for the carrying capacity of a single device and the load-carrying capacity of the track foundation; During the process, the lifting speed of the light-loaded end is faster, and the lifting speed of the heavy-loaded end is slower, which poses a great threat to the overall stability of the longitudinal movement of the steel truss girder

Method used

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  • Longitudinal horizontal movement method for super-long super-heavy bridge components
  • Longitudinal horizontal movement method for super-long super-heavy bridge components

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Embodiment 1

[0014] A method for longitudinal translation of super-long and super-heavy bridge components. Six track-type trolleys are arranged symmetrically at equal intervals below the lower chord nodes of the main truss on both sides of each steel truss girder, such as the 2# of the main truss on both sides of each steel truss girder , 5#, and 8# lower chord nodes are respectively symmetrically arranged with two rail trolleys. The six track-type trolleys move toward the direction of the bridge components first from left to right, followed by the first trolley 1#, the second trolley 2#, the third trolley 3#, the fourth trolley 4#, and the fifth trolley 5#, the sixth car 6#.

[0015] The six rail-mounted trolleys are controlled by two sets of hydraulic systems. This is because the long oil supply pipeline is not conducive to the simultaneous lifting of the rail-mounted trolleys, and it is difficult to maintain pressure balance.

[0016] Considering that the two sets of oil supply circuit...

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Abstract

The invention provides a longitudinal horizontal movement method for super-long super-heavy bridge components. Six track trolleys are controlled by two hydraulic systems and ejected in a distributed mode, and the overall stability of the longitudinal movement process of a full-span steel trussed beam is ensured. The longitudinal horizontal movement method has the advantages that the requirement for the bearing capacity of a single device is low, the requirement for the bearing capacity of a track foundation is low, purchasing and constructing investment is low, the manufacturing and constructing cycle is short and the use safety coefficient is high. The longitudinal horizontal movement method is safe in operation, reliable in operation, economical, efficient and suitable for longitudinal integral displacement construction of various super-long super-heavy bridge components.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a longitudinal translation method for super-long and super-heavy bridge components. Background technique [0002] In the prior art, the overall vertical displacement of super-long and super-heavy bridge components adopts the lifting method of two large-scale gantry cranes or the simple-supported jacking method of four rail-type trolleys. The lifting method of two large gantry cranes has unfavorable factors such as high requirements on the carrying capacity of a single equipment, large equipment investment, long equipment procurement and installation period, and limited space on the site; the simply supported lifting method of four rail-type trolleys has a single The unfavorable factors such as high requirements on the carrying capacity of the equipment, high design standards of the track foundation, large construction investment, long construction period, and low sa...

Claims

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Application Information

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IPC IPC(8): E01D21/06
CPCE01D21/06
Inventor 蔺卫华李士斌魏明霞
Owner CHINA RAILWAY SHANQIAO GRP CO LTD
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