流体-单腿平台结构-土相互作用体系的地震响应分析  

DYNAMIC RESPONSE OF THE FLUID-S.L.GRAVITY PLATFORM-SOIL INTERACTION SYSTEM

作　　者：匡志平[1] 曹国敖 

机构地区：[1]同济大学

出　　处：《海洋工程》1991年第4期21-28,共8页The Ocean Engineering

基　　金：国家自然科学基金

摘　　要：本文主要对流体-重力式单腿平台结构-土相互作用体系在地震荷载作用下的动力响应问题进行了研究。分析了考虑土-结构相互作用及不考虑相互作用效应对体系动力响应的影响,同时研究了沉箱基础半径和海水深度变化对体系动力响应的影响,并结合一个简单实例进行了数值分析。An approximate method is presented to investigate the earthquake response of the Fluid-S.L.Gravity peatform-soil interaction system.The purpose of the current study is to present an approximate efficient analytical solution to quantify the response of the flexible, vertical circular cylinder subjected to earthquake loading.By assuming a suitable form of the velocity potential of the radiation waves and by using of the motion equation and the boundary conditions, the unknown coefficients can be obtained, then the function of frequency for the interaction system may be also obtained.In this paper, the difference of the system dynamic response between rigid foundation and flexible foundation has been analysed and the influence of the various foundation geometric dimension and the various water-depth on the hydrod-ynamic loading and dynamic response of the system illustrated.

关 键 词：相互作用体系 地震响应分析 动力响应问题 地震荷载作用 平台结构 沉箱基础 数值分析 地基土 地震波作用 海水深度 

分 类 号：P75[天文地球—海洋科学]