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浙江大学学报(工学版)
浙江大学学报(工学版)
土木工程     
3种理想化滞回模型下的弹塑性反应谱对比
童根树1，叶赟1，2，张磊1
1.浙江大学 土木工程学系,浙江 杭州 310058; 2.浙江大学建筑设计研究院有限公司，浙江 杭州 310027
Comparative study on elastic-plastic response spectra of three idealized hysteretic models
TONG Gen-shu1, YE Yun1,2, ZHANG Lei1
1. Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China; 2. Architectural Design and
 Research Institute of Zhejiang University, Hangzhou 310027, China
 全文: PDF(7338 KB)   HTML
摘要：

对双线性(BIL)和剪切滑移(SSP)滞回模型的SDOF体系在地震作用下进行弹塑性动力分析,得到考虑和不考虑P-Δ效应时不同场地、延性等参数组合下双周期标准化的地震力调整系数R谱,并与理想弹塑性(EPP)滞回模型的R谱比较.结果表明：在Tga<T<TgR周期段,等能量准则在BIL模型中成立,EPP模型的R值大于等能量准则的值,显示耗能能力在此周期段中有重要影响；在T>2TgR周期段,3种滞回模型的R谱接近；P-Δ效应对BIL模型的影响可以忽略,对EPP和SSP模型的影响随延性的增大而增大；对于具有90%保证率的R谱,BIL模型在Tga<T<TgR范围内很小,SSP模型仅略有改善,EPP模型的谱值最大.
Abstract:

The dynamic elastic-plastic analysis of systems of bilinear elastic (BIL) model and shear-slipped elastic-plastic (SSP) model was conducted to acquire the seismic force modification factor R for different site and ductility. The R-spectra were constructed with their abscissa normalized with two characteristic periods. The R-spectra with the dynamic P-Δ effect being considered and being not included were constructed. Results were compared with those of elastic-perfectly plastic (EPP) models. Results reveal that the equal-energy rule is valid only for BIL model in the range of Tga<T<TgR. For EPP and SSP, the R spectra are greater than for BIL, indicating the importance of energy dissipation capacity in the period range of Tga<T<TgR. With T>2TgR, the R spectra are similar for all three models. The P-Δ effect has almost no influence on the R spectra of BIL model, but for EPP and SSP models, its influence increases with the ductility factor. For the R spectra with 90% assurance, the R spectra are very small for BIL model in the period of Tga<T<TgR, the R spectra for SSP has only minor improvement and the R spectra of EPP model has the greatest value.
出版日期: 2014-09-03
:  TU 973.31  
基金资助:

国家自然科学基金资助项目(51078328,50908203).
作者简介: 童根树(1963—)，男，教授，博导，从事钢结构稳定和抗震的研究.E-mail: tonggs@ccea.zju.edu.cn
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引用本文:

童根树，叶赟， 张磊. 3种理想化滞回模型下的弹塑性反应谱对比[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2014.04.020.

TONG Gen-shu, YE Yun, ZHANG Lei. Comparative study on elastic-plastic response spectra of three idealized hysteretic models. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2014.04.020.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2014.04.020    或    http://www.zjujournals.com/eng/CN/Y2014/V48/I4/693

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