SDOF体系地震输入能及其分配问题研究
发布时间：2018-11-04 09:49
【摘要】：目前对地震能量方面的研究工作多集中在地震总输入能和结构总滞回耗能的估算上,忽略了能量反应的时变特征。本文基于能量平衡原理,通过Matlab自编程序对比分析了SDOF体系在弹性无阻尼、弹性有阻尼、弹塑性双线型和弹塑性三线型四种滞回模型下的地震能量时程反应,进而探讨了SDOF体系地震能量时程反应、总输入能及瞬时输入能分配的规律。结果表明:滞回模型选取对弹塑性SDOF体系非动能项影响较大;不同滞回模型下SDOF体系地震输入能的大小关系为:弹塑性体系弹性体系,弹性有阻尼体系弹性无阻尼体系,弹塑性三线型弹塑性双线型。
[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.
【作者单位】： 西安科技大学;
【基金】：中国博士后科学基金(2016M592901XB) 陕西省教育厅科学研究项目(15JK1478)
【分类号】：TU352.1
本文编号：2309469
[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.
【作者单位】： 西安科技大学;
【基金】：中国博士后科学基金(2016M592901XB) 陕西省教育厅科学研究项目(15JK1478)
【分类号】：TU352.1
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