VISCOPLASTIC SEISMIC RESPONSE OF ARCH DAM UNDER HIGH HYDROSTATIC PRESSURE

摘要：

In this paper, seismic responses of a 278m high arch dam were analyzed. The consistency viscoplastic Hsieh-Ting-Chen four-parameter model of concrete, modified from the static Hsieh-Ting-Chen four-parameter model based on the results of uniaxial tensile and compressive dynamic tests of concrete, was adopted. This model took account into the effect of strain rates and hydrostatic pressure on dynamic behaviors of concrete.Then, an implicit backward Euler iterative algorithm was proposed. Results showed that the strain rate affected the first principal stresses, the maximal equivalent visco-plastic strain rate of the arch dam. It played an important role in the safety assessment of arch dams located in earthquake active area.

关键词： arch dam seismic response strain rate hydrostatic pressure constitutive model algorithm

作者: S.Y. Xiao G. Lin

作者单位: The Key State Laboratory of Coastal and Offshore, Dalian University of technology, Dalian. China

会议类型: 国际会议

会议名称: 14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）