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Method for constructing reinforced concrete combined beam in under-beam beam transporting mode

A technology of steel-concrete composite beams and beam transportation, which is applied in bridges, bridge materials, bridge construction, etc. It can solve the problems of material waste, avoid increasing costs, improve stress, and simple construction methods

Active Publication Date: 2018-05-08
HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, if limited by construction conditions, it is impossible or unsuitable to erect brackets at the bridge site, the construction method without brackets is often used for construction, and the traditional steel-concrete composite beams constructed without brackets need to bear their own weight and construction during the construction process. Load and concrete self-weight, etc., in order to meet the construction requirements, the rigidity of steel beams is required to be greater than that of dead-load composite beams, which causes waste of materials to a certain extent for steel-concrete composite beams that bear the same load after the bridge is completed

Method used

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  • Method for constructing reinforced concrete combined beam in under-beam beam transporting mode
  • Method for constructing reinforced concrete combined beam in under-beam beam transporting mode
  • Method for constructing reinforced concrete combined beam in under-beam beam transporting mode

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Embodiment Construction

[0031] Taking the continuous composite box girder erecting 5*30m as an example below, the construction method of the present invention is described in more detail:

[0032] In the first step, when the construction reaches the bridge span, at first the foundation 301 and the bridge pier 302 are constructed, as figure 1 ;

[0033] In the second step, according to the design requirements, the steel beam unit 1 for each hole is prefabricated, such as Figure 11 ;

[0034] Assembling and hoisting equipment: Take two sets of prefabricated (four pieces) steel girder units 1, weld the two steel girder units along the bridge direction into one, and connect the two steel girder units across the bridge direction through the steel truss 2 in the middle (The top of the steel truss 2 is screwed to the flange of the steel beam unit 1, and the bottom of the steel truss 2 is connected to the horizontally welded connecting web 1.1 at the lower part of the oblique web of the steel beam unit);...

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Abstract

The invention discloses a method for constructing a reinforced concrete combined beam in an under-beam beam transporting mode. The method includes the steps that a steel truss is mainly used for connecting prefabricated steel beam units, a girder of a lifting device is formed to substitute a bridge girder erection machine, and the construction cost of a middle-small-span assembled bridge is reduced. Multiple rows of slings are used in a matched mode in the construction process for installation of steel beams, the stress state of the girder in the construction process can be effectively improved, the installation and use requirements of the reinforced concrete combined beam can be met, cost can be prevented from being increased, no construction process needs to be added, the beneficial effects that the method is simple, and construction is convenient and quick are achieved, practicability is quite high, and application prospects are wide.

Description

technical field [0001] The invention relates to the construction of a steel-concrete composite beam, in particular to a method for constructing a steel-concrete composite beam by means of beam transportation under the beam. Background technique [0002] Steel-concrete composite beam structure is another important structural form after steel structure and concrete structure. It can combine the respective characteristics of the two and provide new solutions for the special design and construction problems of super high, long span, heavy load and complex structures. s Choice. [0003] In terms of bridge construction, steel-concrete composite beams are prefabricated, which can quickly complete the assembly of bridge structures, but bridge erection equipment is required during construction, and the bridge erection equipment usually used is walking bridge erection machines. Since the bridge erecting equipment is very expensive, when the overall length of the bridge is large, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D21/06E01D101/24E01D101/30
CPCE01D21/00E01D21/06E01D2101/24E01D2101/30
Inventor 李斐然刘闯张海啸李修华刘伟邢雪辉郭福利李铎
Owner HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
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