MEMBRANE EFFECTS OF RESTRAINED RC STRUCTURES SUBJECTED TO BLAST LOADS

摘要：

When a RC structure is laterally restrained,the static and dynamic load resistances are both enhanced due to the compressive membrane action. A simplified static membrane action theory was proposed by modifying the Maximum Membrane Force Design Method (MMFM) to predict the total static resistancedeflection curves of restrained beam-slab RC structures. To investigate the dynamic responses of the restrained RC structures subjected to blast loads,a new analytical method was proposed based on the static membrane action theory. The new method uses an equivalent single degree of freedom system,which combines a three parameters elastoviscoplastic rate-sensitive material model with the proposed static theory. A good agreement is observed between the test data and the analytical results. It is demonstrated that the dynamic resistance capacity increases with the increasing of load rate as well as restraint stiffness.

关键词： Membrane action Static loads Blast loads RC structures Resistance capacity

作者: Jin-Chun Liu Li Chen Qing Fang

作者单位: College of Civil Engineering,PLA University of Science and Technology,Nanjing 210007,P.R. China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 732-742

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）