Construction method of multi-connected continuous beam or multi-connected steel structural beam side-span straight beam section

A construction method and side span technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of long construction period, high risk factor, large wind and waves, etc., achieve short construction period, overcome high cost and economic benefits and social benefits

Active Publication Date: 2018-03-20
CHINA RAILWAYS CORPORATION +2
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  • Summary
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  • Claims
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Problems solved by technology

For the cast-in-place section with a length of 35m, the traditional support beside the pier cannot meet the requirements. It is necessary to set up a temporary support pier 1 and cooperate

Method used

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  • Construction method of multi-connected continuous beam or multi-connected steel structural beam side-span straight beam section
  • Construction method of multi-connected continuous beam or multi-connected steel structural beam side-span straight beam section
  • Construction method of multi-connected continuous beam or multi-connected steel structural beam side-span straight beam section

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[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. 的实施例。 Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0027] In an embodiment of the present invention, reference Figure 2 to Figure 9 , A construction method of a multi-connected continuous beam or a multi-connected steel beam side span straight beam section, including:

[0028] S1: Fix the temporary support device between the cast-in-situ section of the first side span and the cast-in-situ section of the second side span; use temporary high-strength threa...

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Abstract

The invention provides a construction method of a multi-connected continuous beam or multi-connected steel structural beam side-span straight beam section. A temporary supporting device is arranged atthe beam joint position between a first side-span cast-in-place section and a second side-span cast-in-place section, the two adjacent side-span cast-in-place sections form a whole through opposite pulling of temporary thick high-strength threaded steel bars, a temporary cable tower is arranged on the temporary supporting device and is utilized to perform staged cantilever construction of side-span cantilever sections. The construction method of the multi-connected continuous beam or multi-connected steel structural beam side-span straight beam section overcomes the shortcomings of high temporary foundation construction cost, high high-pier support risk and long construction period of traditional temporary supporting piers and Bailey beam support matched cast-in-place construction, has the advantages of good construction quality, low cost, short construction period, good economic and social benefits and the like and especially has very strong competitiveness in deep-water high-pier continuous steel structure construction.

Description

technical field [0001] The invention relates to the technical field of construction methods for highway and railway bridge structures, and more specifically, relates to a construction method for side-span straight beam sections of multi-connected continuous beams or multi-connected steel beams. Background technique [0002] The unsupported continuous rigid frame bridge is a newly developed bridge type in recent years. Compared with the traditional continuous beam (rigid frame) side pier with movable supports, the side pier adopts the form of pier beam consolidation. In order to better adapt to the longitudinal expansion and deformation of the main beam under temperature load, the side piers are double-branched thin-walled piers with low thrust stiffness, and the main beam is only consolidated with one of the thin-walled columns. After research on related bridges at home and abroad, the main characteristics of the continuous rigid structure without support are: (1) no support...

Claims

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Application Information

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IPC IPC(8): E01D21/10
CPCE01D21/105
Inventor 柏华军王德志文望青寇延春凌玉芳邓世海武兵
Owner CHINA RAILWAYS CORPORATION
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