摘要
本文应用子结构方法对天然地基上带刚性整体基础 (箱型基础或筏板基础 )的高层框架结构进行了平面静力弹塑性 (Pushover)分析 ,地基阻抗采用拟合数值结果得到的近似公式 ,上部框架结构采用杆系模型。并就其水平荷载模式、目标位移等几个关键问题进行了研究。文末对一栋 12层的钢筋混凝土框架结构进行了静力弹塑性 (Pushover)分析 ,说明了本文建立的考虑土 -结构相互作用高层框架结构静力弹塑性 (Pushover)
In this paper, the sub-structure technique is adopted to perform nonlinear static seismic response analysis considering soil-structure interaction for high-rise frame structures with box foundation or raft foundation resting on natural foundation soils,the dynamic impedance coefficients of foundation are determined by a set of approximate formulas which are obtained by fitting mathematical expressions to accurate numerical solutions,the upper-structures is modeled as the bar-system model. Some key problems of pushover analysis method for high-rise frame structures considering soil-structure interaction are studied. At last, the nonlinear seismic response analysis for a 12-story high-rise reinforce concrete frame structure is given as a numerical example to show the possibility and reliability of the pushover analysis method for high-rise frame structures considering soil-structure interaction.
出处
《工程抗震与加固改造》
2005年第1期7-11,共5页
Earthquake Resistant Engineering and Retrofitting
关键词
土-结构相互作用
地基阻抗
非线性时程分析
高层框架结构
静力弹塑性分析方法
soil-structure interaction
the dynamic impedance of foundation
the time-history analysis of nonlinear seismic response
high-rise frame structure
push over analysis method
