Study on Compression-bending Behavior of Corrugated Steel-concrete Composite Structure at High Temperature
The corrugated steel-concrete composite structure has been applied to tunnel support due to its high strength and efficient construction,but the performance of corrugated steel plate deteriorates seriously at high temperature because of the lack of concrete protection.Relying on the Gaoshanzhai Tunnel in Pu'er City,Yunnan Province,ABAQUS software was used to establish a finite element model for numerical analysis,and the multi-condition high temperature compression-bending behavior of corrugated steel-concrete composite structures under different temperatures and different eccentricities under the action of positive and negative bending moments was studied.The research results show that with the increase of temperature,the neutral axis of the corrugated steel-concrete composite structure gradually moves upward,and the initial bending stiffness and ultimate load gradually decrease.When the temperature exceeds 500℃,the structural performance decreases the most,and 500℃ should be taken as the key temperature of the structure.
corrugated steelconcretecomposite structureeccentricitiesbending momentfinite element analysis
万方数据
维普
