Incremental Dynamic Analysis of Jacket Type Offshore Platforms Considering Soil-Pile Interaction
The exploitation for offshore oil has become increasingly widespread in the past decades. Steel offshore platforms are commonly constructed to accommodate operation facilities and to withstand environmental and accidental loads during oil exploitation operation. Particular attention is being paid to earthquake loads in seismic active areas because it directly influences the performance of the offshore structure installations. Incremental Dynamic Analysis (IDA) is a powerful tool to assess the capacity of a structure subjected to seismic loads. In this paper, IDA analysis is performed on a newly designed and installed offshore platform through the use of nonlinear finite element program. Pile-soil interaction and post-buckling of lateral load resisting elements are considered and relevant demand parameters are introduced. Nonlinear pile model is used to capture the failure of piles so that the capacity and demand of the structure can be estimated more accurately. It is concluded that using different demand parameters may change the summarized IDA curves especially in highly nonlinear responses of the structure.
Incremental Dynamic Analysis (IDA) Engineering Demand Parameters (EDP) Jacket Pile nonlinearity Soil-Pile-Structure Interactions
B. Asgarian A.A. Aghakouchak P. Alanjari M.A. Assareh
K.N.Toosi University Of Technology, Tehran, Iran Tarbiat Modares University, Civil Department, Tehran, Iran
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）