- 摘 要
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方 志
(合樂中國有限公司，上海200021)[摘要] 在動力有限元理論的基礎上，采用粘彈性人工動力邊界模擬地基無限域的影響，建立了高層建筑-樁-土( SPSI)結構體系的動力計算模型，并編制了動力有限元計算程序TPSPSIo對一12層框架結構-樁-土體系的實例分析表明，采用粘彈性人工邊界的SPSI體系計算結果穩(wěn)定，地震反應形態(tài)良好，并獲得了一些可供工程實踐參考的SPSI體系在地震作用下位移及內力的變化規(guī)律。
[關鍵詞] SPSI；動力分析；有限元；粘彈性；人工邊界；初始應力；地震響應Dynamic analysis of SPSI system considering structure-foundation interaction
Fang Zlu
(Halcrow China Ltd., Shanghai 200021, China)Abstract: Based on theory of dynamic finite element method, it presents a dynamic model of soif-pile-structure system with viscous-elastic artificial boundary to consider the influence of infinite extent of soil, and a dynamic FE calculating program named TPSPSI is achieved. With that program, it carried out a example calculation of 12-storey frame structure-pile-soil system and the results show that the dynamic responses of the system are good and steady with the viscous-elastic boundary, and some beneficial conclusions are obtained which could guide the structure design practice.
Keywords: soil-pile-structure interaction; dynamic analysis; finite element; viscous-elastic; artificial boundary; initial stress; seismic response
