摘要
为了评估建筑结构的抗倒塌能力,在机械铰理论的基础上,提出了机械铰的量化准则,进行了框架节点的数值模拟,并与节点的试验结果进行对比和验证,最后建立了基于机械铰的结构倒塌判定准则,并对某二层钢筋混凝土框架结构进行了倒塌分析。研究结果表明,相比于塑性铰的倒塌判定准则,基于机械铰的倒塌判定准则更接近于结构的真实倒塌极限,可以更真实地模拟结构的抗倒塌能力。
To evaluate the collapse-resistant capacity of reinforced concrete(RC)frame structures,a quantitative criterion for mechanical hinge formation is proposed.Numerical simulation of RC frame joints is performed and verified using experimental results.A mechanical-hinge-based collapse criterion of structures is established.The criterion is used for the collapse analysis of a two-story reinforced concrete frame structure.The analysis results show that compared to the plastic-hinge-based criterion,the mechanical-hinge-based criterion works better for simulating the structural collapse and predicting the collapse resistance of RC frame structures.
出处
《土木建筑与环境工程》
CSCD
北大核心
2016年第S2期1-5,共5页
Journal of Civil,Architectural & Environment Engineering
基金
四川省科技支撑计划项目(2014SZ0110)
关键词
机械铰
量化准则
倒塌判定准则
倒塌分析
RC框架结构
mechanical hinge
quantitative criterion
collapse criterion
collapse analysis
RC frame structure
