The Construction Method of Long-span Reinforced Concrete Composite Truss Girder Lateral Movement and Beam Falling

A technology of combining trusses and construction methods, which is applied in the erection/assembly of bridges, bridges, bridge construction, etc., can solve the problem of unreliable lateral movement of large-tonnage span bridges, and achieves strong applicability and superiority. Strong construction adaptability , the effect of a wide range of applications

Active Publication Date: 2017-03-01
RAILWAY NO 10 ENG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there is no reliable construction method for large-tonnage over-the-line bridge swaying and beam drop construction

Method used

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  • The Construction Method of Long-span Reinforced Concrete Composite Truss Girder Lateral Movement and Beam Falling
  • The Construction Method of Long-span Reinforced Concrete Composite Truss Girder Lateral Movement and Beam Falling
  • The Construction Method of Long-span Reinforced Concrete Composite Truss Girder Lateral Movement and Beam Falling

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Embodiment Construction

[0055] The present invention will be further described below in conjunction with accompanying drawing and non-limiting embodiment:

[0056] As shown in the attached picture, the Shaoguan Zhenjiang Bridge on the decommissioning line has a total length of 2.3km, 1-88m steel-concrete composite truss girders span 13# to 14#, and cross the Beijing-Guangzhou Railway up and down lines, with an intersection angle of 30 °, located on the transitional curve with a curve radius of R=800m. The steel-concrete composite truss girder adopts the construction method of lateral cast-in-place and dragging lateral movement.

[0057] Lateral movement and beam drop construction include the following steps:

[0058] (1) Measure the axis of the slideway beam to confirm that the axes of the two slideway beams are parallel;

[0059] (2) Install the dragging and traversing system, which includes the upper slideway 6, the glideway 7, the reaction limit seat 10, the traction device 9, and the constructi...

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Abstract

The invention discloses a large-span steel concrete combined truss girder side position transverse movement and girder dropping construction method. The construction method comprises the following steps of (1) measuring whether two slide way girder axels to be parallel, (2) installing a pulling transverse-moving system, (3) conducting main point pilot transverse movement outside railway clearance, (4) locking the main point to conduct formal transverse movement construction according to the pilot transverse movement data, (5) installing a girder-dropping steel support pier, a temporary protection pier and a girder-dropping jack on a pier top cap after the girder body is transversely moved to a designed position, then detaching a slide boat, a spherical steel bearer and a slide way beam. In the second step, the pulling transverse-moving system comprises an upper slide way, a lower slide way and a traction device, wherein the upper slide way is formed by the spherical steel bearer and the slide boat; the lower slide way is formed by two slide way beams; the slide boat of the upper slide way is buckled on the lower slide way; the traction device is connected with the slide boat on the transverse-movement front end via a steel strand; in the fifth step, two ends of the beam body conduct alternative girder-dropping; the spherical steel bearer is mounted on the lower part of the beam body; the spherical steel bearer falls on a supporting pinner; and the girder-dropping is in place.

Description

technical field [0001] The invention relates to a construction method for lateral lateral movement and beam drop of a large-span steel-concrete composite truss beam, in particular to a construction method for lateral lateral displacement and beam drop of a large-span steel-concrete composite truss beam spanning a busy railway trunk line , belongs to the technical field of bridge construction. Background technique [0002] The Shaoguan Zhenjiang Super Bridge on the Deconstruction Line has a total length of 2.3km and a total of 69 piers, of which spans 13# to 14# are 1-88m composite truss beam structures, across the Beijing-Guangzhou Railway up and down lines, and the angle of intersection is 30° , located on the transitional curve with a curve radius of R=800m. [0003] The total length of the steel-concrete composite truss girder is 90m. The deck part adopts the prestressed concrete channel girder structure, and the steel truss structure is adopted above the bridge deck. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
Inventor 杨基好杜彪乐叶伟王憬丁国才许岩张振伟胡新贵闫小普孙后祥周亚飞
Owner RAILWAY NO 10 ENG GRP CO LTD
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