Construction method of two-span steel-concrete composite bridge with cable-back erecting machine

A bridge construction and bridge erecting machine technology, which is applied in the direction of erecting/assembling bridges, bridges, bridge construction, etc., can solve the problems of low utilization rate of equipment, slow construction speed, unfavorable force of steel girders and side spans, and improve utilization The effect of increasing the efficiency and construction speed, improving the hoisting strength and transportation distance

Active Publication Date: 2021-08-24
HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a construction method for a two-span steel-concrete composite bridge using a back-cable bridge-erecting machine. handicap problem

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  • Construction method of two-span steel-concrete composite bridge with cable-back erecting machine
  • Construction method of two-span steel-concrete composite bridge with cable-back erecting machine
  • Construction method of two-span steel-concrete composite bridge with cable-back erecting machine

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Embodiment Construction

[0036] The construction method of the two-span steel-concrete composite bridge adopting the back-cable type bridge erecting machine of the present invention is suitable for the situation that the steel girder unit span is 70-150m. Taking the steel-concrete continuous composite bridge with six spans and one connection as an example below, the construction method of the present invention will be described in more detail.

[0037] like Figure 1-7 Shown, the present invention mainly comprises the following steps:

[0038] In the first step, according to the bridge design scheme, prefabrication such as Figure 8 As shown in the steel beam unit 1, the steel beam unit 1 mainly includes a web 1.1 and a flange 1.2, and a temporary hanging piece 1.3 is welded on the flange 1.2.

[0039] In the second step, after the construction of the bridge foundation piles and bridge piers is completed, the bridge erecting machine 2 is put in place.

[0040] like Figure 9 As shown, the bridge e...

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Abstract

The invention discloses a construction method of a two-span steel-concrete composite bridge using a back cable type bridge erecting machine. The steps are as follows: ① prefabricating the steel girder unit; Make the front, middle and rear outriggers of the bridge erecting machine stand respectively on the bridge pier cover beam ③First hoist the first span steel beam in place, then adjust the middle outriggers to reserve erection space, hoist the second span steel beam in place ④Longitudinal Weld the steel beams of the first and second spans ⑤ Install the prefabricated bridge decks of the first and second spans, and adjust the position of the middle legs again ⑥ Pull the steel beams of the two spans at the same time The joint concrete ⑧ shall be constructed according to the two-span connection method described in the second to seventh steps until the erection of the integrated bridge is completed. The invention can greatly improve the construction progress of the steel-concrete composite bridge, and can also improve the stress state of the composite structure. It is a new concept of steel-concrete composite bridge construction method and has wide application in long-span steel-concrete composite bridges. prospect.

Description

technical field [0001] The invention relates to a construction method of a steel-concrete composite beam, in particular to a construction method of a two-span steel-concrete composite bridge using a back cable type bridge erecting machine. Background technique [0002] Steel-concrete composite bridges have many advantages such as light weight, large spanning capacity, and fast construction progress. They have very obvious economic benefits and competitiveness in transportation construction. At present, the country is vigorously promoting the construction of steel-concrete composite beam bridges. Since the construction sequence and construction method will affect the completed state and mechanical characteristics of the steel-concrete composite girder bridge, it is necessary to select an appropriate construction method based on the actual situation. [0003] At present, there are three commonly used construction methods: ① Bracket construction: first erect temporary mounting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 李斐然张存超张海啸袁波郭晓光傅立军谢理伟关冀
Owner HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
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