Simplified structure of hogging moment area of concrete continuous beam

Abstract

The invention discloses a simplified structure of a hogging moment area of a concrete continuous beam. The simplified structure comprises a steel bar structure and a concrete pouring structure. The steel bar structure comprises constructional steel bars arranged on a hogging moment area cast-in-place section and anti-bending steel bars arranged on a hogging moment area bridge deck slab section. The constructional steel bars are fixedly connected with beam end steel bars; the constructional steel bars are fixedly connected with the anti-bending steel bars; wherein the hogging moment area cast-in-place section is located between two adjacent beam ends, the hogging moment area bridge deck slab section is located above the two adjacent beam ends and above the hogging moment area cast-in-placesection, and an integral T-shaped structure formed by simultaneously pouring concrete on the hogging moment area bridge deck slab section and the hogging moment area cast-in-place section is a concrete pouring structure. Compared with the prior art, the simplified structure has advantages that hogging moment is resisted by arranging common steel bars and pouring high-performance concrete, the construction process is simple, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a simplified structure in the negative moment region of a concrete continuous beam. Background technique [0002] The negative moment zone of concrete continuous girder bridge is the section where the superstructure of concrete continuous girder bridge produces negative bending moment, and it is an important part of the superstructure of concrete continuous girder bridge. [0003] At present, in the design of concrete continuous girder bridges in my country, the negative bending moment of the bridge deck is resisted by arranging prestressed steel beams, namely roof beams, on the top surface of the beam body in the negative bending moment area. Although such a structure can resist the negative bending moment of the bridge deck, the construction is cumbersome, requiring tension and prestressing, and the cost is relatively high. Contents of the invention [0004] The p...

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Problems solved by technology

Although such a structure can resist the negative bending moment of the bridge deck, the construction is cumbersome, requiring tension and prestressing, and the cost is high

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