含无限刚性体结构的动力学特征与工程应用

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英文篇名：DYNAMIC CHARACTERISTICS AND ENGINEERING APPLICATION OF STRUCTURES CONTAINING INFINITELY STIFF MEMBERS 中文刊名：力学与实践 英文刊名：Mechanics and Engineering 作者：朱慈勉 ; 吴宇清 英文作者：ZHU Cimian WU Yuging (Dept. of Building Engineering ; Tongji University ; Shanghai 200092 ; China) 中文关键词：无限刚性体 ; 隐性无限刚性 ; 惯性耦合 ; 动力学特征 ; 工程实践 英文关键词：infinitely stiff members ; hidden infinitely stiff ; inertial coupling ; dynamic characteristics ; engineering practice 出版日期：2005-04-15 机构：同济大学建筑工程系,同济大学建筑工程系 上海 200092 ,上海 200092 年：2005 期：02 出版单位：力学与实践

摘要

除显含无限刚性段的振动体系外,结合动力问题有限单元法中的一致质量矩阵提出了隐性无限刚 性的概念,以及由此引起的振动惯性耦合问题.结合地震作用下高层建筑与桩-土相互作用时的动力响应,提 出了对于实际工程问题利用分支模态二步分析法建立计算模型时应注意的问题.
This paper deals with the dynamic characteristics of the structures containing infinitely stiff members, for which the vibration equations of the systems are usually inertially coupled. Combined with the element consistent mass matrix in finite element dynamic analysis, the concept of hidden infinitely stiff and relative inertial coupling is presented. The paper discusses some problems in setting up the computational models for dynamic response analyses of tall buildings, using a branched modal and taking pile-soil-superstructure interaction into account.

引文

1朱慈勉,曹慧玲.含无限刚性体结构的静力学特征与工程实践. 力学与实践,2002,24(6):56-58(Zhu Cimian,Cao Huilin. The static characteristics and engineering practice of the structures containing infinite stiff members. Mechanics in Engineering, 2002, 24(6): 56-58 (in Chinese))
    2朱慈勉.结构力学(下册). 北京;高等教育出版社, 2004. 120-123 (Zhu Cimian. Structural Mechanics (Vol Ⅱ). Beijing: Higher Education Press, 2004. 120-123 (in Chinese))
    3姜忻良,严士超,丁学成.简体结构-桩-土相互作用的分支 模态二步法.天津大学学报, 1995(6):796-801(Jiang Xin- liang, Yan Shichao, Ding Xuecheng. Two step method combined with the branched modal analysis for tube structure-pile-soil interaction system. Journal of Tianjin University, 1995(6): 796-801 (in Chinese))