Steel-concrete composite beam structure applicable to self-compacting concrete pouring and design method

Abstract

The invention provides a steel-concrete composite beam structure applicable to self-compacting concrete pouring and a design method, and belongs to the field of bridge engineering. The steel-concretecomposite beam structure applicable to self-compacting concrete pouring changes a square-grid mode of thinking adopted by a conventional steel structure design, and adopts oblique-crossing type stiffened plates and a cross arrangement mode instead. As a concrete flowing platform, the steel-concrete composite beam structure helps self-compacting concrete to reach the required position instead of directly pouring from a height by virtue of a pumping tube, so as to prevent concrete aggregates from splashing, to well avoid the separation of concrete ingredients and to facilitate the discharge of internal air, so that the steel-concrete composite beam structure is also applicable to other concrete pouring which is similarly affected by the construction space.

Description

technical field [0001] The invention belongs to the field of bridge engineering, and in particular relates to a steel-concrete mixed beam structure and a design method suitable for pouring self-compacting concrete, which is suitable for the design and construction of steel-concrete combined beam bridges, and is also suitable for other steel-concrete combined forces Design and construction of structures. Background technique [0002] With the improvement of self-compacting concrete mix ratio, more and more structures adopt self-compacting concrete construction technology in engineering, because self-compacting concrete can reduce the vibration process during concrete pouring, and can achieve the same degree of compaction as conventional concrete Or strength index, which undoubtedly provides great help for projects that cannot be vibrated due to construction environment restrictions. However, it may be easier for ordinary-strength concrete, or for large-area construction such...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, aiming at the existing problems in the construction process of the existing mixed beams, to provide a steel-concrete mixed beam structure suitable for pouring self-compacting concrete, which takes into account both structural Stress needs, and at the same time, it can avoid the problem that the internal air bubbles cannot be discharged during the flow of self-compacting concrete. More importantly, it can ensure that the strength of self-compacting concrete will not be uneven due to slurry separation during pouring, so as to ensure structural safety

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