| 基于等效单自由度体系的结构滞回耗能估计 |
| |
| 引用本文： | 王丰,李宏男.基于等效单自由度体系的结构滞回耗能估计[J].大连理工大学学报,2007,47(1):85-89. |
| |
| 作者姓名： | 王丰 李宏男 |
| |
| 作者单位： | 大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024 |
| |
| 摘 要： | 提出了研究单自由度体系和多自由度体系在地震作用下耗能关系的重要意义;建立了结构的等效单自由度体系能量方程,得出与原多自由度体系滞回耗能及变形能关系公式,据此提出了基于等效单自由度体系的多自由度结构体系总滞回耗能估计方法.分别对质量为均匀分布,楼层剪切强度和剪切刚度为均匀及不均匀分布的8幢5层剪切型多自由度体系和其等效单自由度体系输入典型地震动,计算滞回耗能及变形能,并将计算结果进行比较分析.结果表明,通过等效单自由度体系来估计剪切型多自由度体系的滞回耗能,是一种计算简便且较为准确的方法.
|
| 关 键 词： | 多自由度体系 等效单自由度体系 滞回耗能 变形能 往复Pushover分析 |
| 文章编号： | 1000-8608（2007）01-0085-05 |
| 修稿时间： | 2005-07-102006-12-21 |
Estimation of hysteretic energy of structures based on equivalent SDOF systems |
| |
| WANG Feng,LI Hong-nan.Estimation of hysteretic energy of structures based on equivalent SDOF systems[J].Journal of Dalian University of Technology,2007,47(1):85-89. |
| |
| Authors: | WANG Feng LI Hong-nan |
| |
| Institution: | State Key Lab. of Coastal and Offshore Eng., Dalian Univ. of Technol., Dalian 116024, China |
| |
| Abstract: | The important meanings of researching into the relationship of seismic energies of single-degree of freedom(SDOF) systems and multi-degree of freedom (MDOF) systems are presented.The relation formula of hysteretic energy and deformation energy of MDOF structures as well as the equivalent SDOF systems based on the energy equation is developed.The procedure of estimating hysteretic energy of MDOF structures under severe earthquake motions based on equivalent SDOF systems is proposed.With the analysis of eight examples of uniform and nonuniform shearing lumped mass MDOF structures,it is shown that the procedure to get hysteretic energy demand of MDOF structures employing the method based on equivalent SDOF systems is a simple,effective and exact method. |
| |
| Keywords: | MDOF system equivalent SDOF systems hysteretic energy deformation energy reversal Pushover analysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《大连理工大学学报》浏览原始摘要信息 |
| 点击此处可从《大连理工大学学报》下载免费的PDF全文 |
