AN IMPROVED NUMERICAL TIME-DOMAIN APPROACH FOR THE DYNAMIC DAM-FOUNDATION-RESERVOIR INTERACTION ANALYSIS BASED ON THE DAMPING SOLVENT EXTRACTION METHOD
Based on the damping solvent extraction method (DSEM), a new sub-regional explicit-implicit reciprocal solution method with integral strategy of mixed time step-size in time domain is proposed in this paper, to cope with the numerical analysis of dynamic soil-structure interaction. In the approach, an implicit integral arithmetic with big time step is applied in the computation of structure region, as explicit integral solution with small time step is used in the soil region. This method is convenient to combine the numerical advantages of big calculated time steps in implicit integration and wide applicability of explicit numerical integration. Furthermore, according to the similarity in the numerical expression between dynamic differential equations for structure and fluid mechanics, the above proposed solution methods on DSEM is extended to cope with the dynamic dam-reservoir interaction, in which the hydro dynamic pressure of unbounded water can be presented by explicit boundary interaction forces. Finally, some practical examples are presented to demonstrate that the evaluation efficiency can be efficiently improved in the condition of satisfying good engineering accuracy.
Dynamic structure-foundation interaction analysis Time-domain numerical method Infinite soil Damping solvent extraction method
Jianbo Li Gao Lin Jianyun Chen
Doctor, Dep. Of Civil and Hydra. Engng., Dalian Univ. of Tech., Dalian, China Professor, Dep. Of Civil and Hydra. Engng., Dalian Univ. of Tech., Dalian, China
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）