優(yōu)化布置剛度結(jié)構(gòu)地震響應(yīng)基礎(chǔ)研究
李鵬，裴星洙，趙光偉，劉正偉
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(西安交通大學(xué)土木工程系，西安 710049)［摘要］使用時程分析法對地震作用下結(jié)構(gòu)模型的累積塑性變形和塑性能分布進(jìn)行分析，發(fā)現(xiàn)層間屈服位移在一定范圍內(nèi)的改變，對兩者的分布規(guī)律影響較小。將累積塑性變形在各樓層均勻分布的結(jié)構(gòu)定義為優(yōu)化布置剛度結(jié)構(gòu)，其層間剪力系數(shù)定義為優(yōu)化布置剛度結(jié)構(gòu)層間剪力系數(shù)。提出了使累積塑性變形按樓層均勻分布的優(yōu)化布置剛度結(jié)構(gòu)層間剪力系數(shù)表達(dá)式，可以用于結(jié)構(gòu)優(yōu)化布置剛度的設(shè)計。［關(guān)鍵詞］累積塑性變形分布；累積塑性能分布；優(yōu)化布置剛度層間剪力系數(shù)；時程分析Seismic response of structure with stiffness optimization arrangementLi Peng, Pei Xingzhu, Zhao Guangwei, Liu Zhengwei(Department of Civil Engineering, Xi´an Jiaotong University, Xi´an 710049, China)Abstract:The distribution of cumulative plastic displacement and energy of structures in earthquake is crucial for structure design. When the yield displacements are in a certain scale, both rules of distribution have no more shifts. Modulating stiffness of structure makes the distribution of cumulative plastic displacement equilibratory in every floor, and this kind of structure is defined as the structure with stiffness´ optimization arrangement. Function of its interlaminar shear force coefficient is gained. Applicability of the function has been validated, so it can be applied in the optimization design of structure stiffness.Keywords:cumulative plastic displacement; cumulative plastic energy distribution; interlaminar shear force coefficient;time-history analysis
