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Construction method for offshore steel trestle

A technology of steel trestle and construction method, which is applied to bridges, bridge construction, erection/assembly of bridges, etc. It can solve the problems of slow construction progress, turbulence of ship and machine, and inability to form all-weather operations, so as to speed up construction progress and improve positioning accuracy.

Inactive Publication Date: 2015-09-23
CHONGQING CONSTR BRIDGE ENG +2
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Problems solved by technology

The first construction plan requires a large piling ship, which requires high investment. The water level of the trestle bridge is too shallow during the ebb tide, and the construction ship cannot dock, and it cannot form an all-weather operation. The turbulence is serious, and the positioning accuracy of steel pipe piles is not high
Although the second construction plan is less affected by the weather, the crawler crane is relatively stable on the trestle bridge and will not shake, but it is limited by the crawler crane's lifting capacity and operating radius, so it can only be used for construction of trestle bridges in shallow overburden areas. Or start trestle bridge construction directly from the shore, and the construction progress is slow, and the construction accuracy is not easy to control

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  • Construction method for offshore steel trestle
  • Construction method for offshore steel trestle

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Embodiment Construction

[0009] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0010] The construction method of the offshore steel trestle bridge is mainly composed of four parts: the positioning of the pontoon platform, the vibration and sinking of the foundation steel pipe piles, the Bailey main truss and the bridge deck pavement, such as figure 1 As shown, the foundation construction of the trestle bridge adopts pontoon platform 2 and 25t truck crane 1 together with DZ90 vibratory hammer to sink piles; figure 2 As shown, the grouped trusses 3 are transported to the site and assembled with a 50t crawler crane 4 as a whole; the bridge deck construction is installed on site with a 50t crawler crane, and the construction is carried out span by span. The upper structure and the lower structure of the trestle bridge are constructed separately to form multiple working faces, which do not affect each other, and the mecha...

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Abstract

The invention discloses a construction method for an offshore steel trestle. The construction method includes the first step of positioning of a buoyancy tank platform, the second step of distribution of foundation steel tubular piles, the third step of pavement of a primary Bailey truss and the fourth step of bridge deck pavement. The construction method for the offshore steel trestle is fast in construction progress, and the steel tubular piles are positioned accurately.

Description

technical field [0001] The invention belongs to a method for erecting a bridge, and in particular relates to a construction method for an offshore steel trestle bridge. Background technique [0002] The current relatively mature construction methods for offshore steel trestle bridges include: first, using piling ships to insert and drive steel pipe piles, and crawler cranes to install the upper structure; The first construction plan requires a large piling ship, which requires high investment. The water level of the trestle bridge is too shallow during the ebb tide, and the construction ship cannot dock, and it cannot form an all-weather operation. The turbulence is severe, and the positioning accuracy of steel pipe piles is not high. Although the second construction plan is less affected by the weather, the crawler crane is relatively stable on the trestle bridge and will not shake, but it is limited by the crawler crane's lifting capacity and operating radius, so it can o...

Claims

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Application Information

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IPC IPC(8): E01D21/00
Inventor 冯果瞿为
Owner CHONGQING CONSTR BRIDGE ENG
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