發(fā)布時間：2018-11-04 09:49

【摘要】：目前對地震能量方面的研究工作多集中在地震總輸入能和結(jié)構(gòu)總滯回耗能的估算上,忽略了能量反應(yīng)的時變特征。本文基于能量平衡原理,通過Matlab自編程序?qū)Ρ确治隽薙DOF體系在彈性無阻尼、彈性有阻尼、彈塑性雙線型和彈塑性三線型四種滯回模型下的地震能量時程反應(yīng),進而探討了SDOF體系地震能量時程反應(yīng)、總輸入能及瞬時輸入能分配的規(guī)律。結(jié)果表明:滯回模型選取對彈塑性SDOF體系非動能項影響較大;不同滯回模型下SDOF體系地震輸入能的大小關(guān)系為:彈塑性體系彈性體系,彈性有阻尼體系彈性無阻尼體系,彈塑性三線型彈塑性雙線型。
[Abstract]:At present, most of the researches on seismic energy are focused on the estimation of the total input energy and the total hysteretic energy of the structure, and the time-varying characteristics of the energy response are ignored. Based on the principle of energy balance, the seismic energy time-history responses of SDOF system under four hysteretic models: elastic non-damping, elastic damping, elastic-plastic two-line and elastic-plastic three-wire are analyzed by Matlab program. Furthermore, the time history response, total input energy and instantaneous input energy distribution of SDOF system are discussed. The results show that the selection of hysteretic model has great influence on the non-kinetic term of elastoplastic SDOF system. Under different hysteretic models, the relationship of seismic input energy of SDOF system is as follows: elastic system, elastic system with damping, elastoplastic three-wire elastoplastic double line type.
【作者單位】： 西安科技大學(xué);
【基金】：中國博士后科學(xué)基金(2016M592901XB) 陜西省教育廳科學(xué)研究項目(15JK1478)
【分類號】：TU352.1

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本文編號：2309469