双线性单自由度体系(SDOF)弹塑性位移比的研究被引量：1

Study of the Inelastic Displacement Ratios for SDOF Systems

下载PDF

导出

摘要本文分析了双线性单自由度体系(SDOF)在地震作用下弹塑性位移与弹性位移之间的关系。对大量地震动记录下的弹塑性位移比进行了统计分析,考虑了场地土情况、震级、震中距以及滞回特性等多种因素对均值弹塑性位移比的影响,得到弹塑性位移比的回归公式。分析结果显示,场地土情况对弹塑性位移比的影响比较明显;震级、震中距以及结构阻尼对弹塑性位移比的影响不是很明显;而在短周期(<0.3s)阶段,滞回特性尤其是捏缩效应对弹塑性位移比的影响很明显。 The relationship of the peak deformation of inelastic and corresponding linear single-degree-of-freedom （SDOF） system with bihnear hysteretic character is analyzed. Based on the comprehensive statistical analysis of inelastic displacement ratios, a regression equation is obtained. The effects of soil condition, earthquake magnitude, epicenter distance and hysteretic character are taken account for. The results demonstrate that the effect of soil condition is obvious, whereas the effects of the earthquake magnitude, epicenter distance, damp ratios is shght. Mentioned here is that in short period （〈 0.3s）, the effects of the hysteretic character especially pinching is significant.

作者沈蒲生龚胡广

机构地区湖南大学土木工程学院

出处《工程抗震与加固改造》 2006年第2期1-5,共5页 Earthquake Resistant Engineering and Retrofitting

基金国家自然科学基金资助项目(50378035)

关键词位移比弹塑性结构分析 displacement ratio inelastic action structural analysis

分类号 TU313 [建筑科学—结构工程]

引文网络
相关文献

参考文献14

1Veletsos A S,and Newmark N M.Effect of inelastic behavior on the response of simple system to earthquake motions[A].Proc.2nd World Conf.on Earthquake Engrg[C].Vol.2,Tokyo,1960:895 ～ 912.
2Veletsos A S,Newmark N M and Chepalati C V.Response of ground-excited elastoplastic systems subjected to ground shock and earthquake motion[A].Proc.3rd World Conf.on Earthquake Engrg[C].Vol.2,Wellington,New Zealand,1965:663 ～ 682.
3Miranda E.Seismic evaluation and upgrading of existing structures[D].PhD thesis,Univ.of California at Berkeley.Berkeley,Calif.,1991.
4Miranda E.Evaluation of inelastic deformation demands of SDOF systems[J].J.Struct.Eng.,ASCE,2001,127(9):1005 ～ 1012.
5Miranda E.Inelastic displacement ratios for structures on firm sites[J].J.Struct.Eng.,ASCE,2000,126(10):1150 ～ 1159.
6Shimazaki K and Sozen M A.Seismic drift of reinforced concrete structures[R].Tech.Research Rep.Prepared for Hazama-Gumi Ltd.,Tokyo,1984:145～ 166.
7Qi X and Moehle J P.Displacement design approach for reinforced concrete structures subjected to earthquakes[R].Rep.No.EERC-91/02,Earthquake Engineering Research Center,Univ.of California at Berkeley,Berkeley,Calif.1991.
8Ruiz-Garcia J and Miranda E.Inelastic displacement ratios for evaluation of existing structures[J].Earthquake Eng.Struct.Dyn.,2003,32(8):1237 ～ 1258.
9Gupta B and Kunnath S.Effect of hysteretic model parameters on inelastic seismic demands[A].Proc.,6th National Conf.on Earthquake Engineering Research Institute[C],Oakland,Calif.,1998.
10Clough R W.Effect of stiffness degradation on earthquake ductility requirements[R].Rep.No.SEMM 66-16,Dept.of Civil Engineering,Univ.of California at Berkeley,Berkeley,Calif.,1966.