建筑结构学报2017，Vol.38Issue(4)：35-44,10.DOI:10.14006/j.jzjgxb.2017.04.005
基于单柱子结构模型的型钢混凝土异形柱框架抗震性能混合试验研究
Seismic hybrid simulation of steel reinforced concrete frame with specially-shaped columns based on single column substructure model
摘要
Abstract
In order to investigate the dynamic seismic behaviors of solid-web steel reinforced concrete frame with specially-shaped columns,seismic hybrid test of a two-bay and three-story middle frame served as prototype integral structure was conducted.The hybrid test system named OpenSees-OpenFresco-MTS was setup based on the existing equipment of laboratory.The cross-shaped section interior column and T-shaped exterior column on bottom story served as experimental elements were loaded with four-bar linkage device respectively and the rest of the structures served as numerical elements were carried out time history analysis with OpenSees.Then the dynamic response of different experimental elements and the whole frame were obtained by observing the loading process,failure characteristics of specimens,and further analysed the hysteretic curves,energy dissipation and stiffness degradation.Quasi-static test was carried out to explore the residual performance of the damaged specimens.The results show that different experimental elements and the whole frame have full hysteretic loops and good energy dissipation capability.The early stiffness of seismic damaged column decreases rapidly,the late stiffness decreases slowly,and the failure stiffness is 30％ of the initial average stiffness.The initial and final energy dissipation responses of whole frame based on different experimental elements show the same results,which verifies the correctness and economy of hybrid test.关键词
异形柱框架/型钢混凝土/试验单元/单柱/混合试验/拟静力试验/抗震性能Key words
specially-shaped column frame/steel reinforced concrete/experimental element/single column/hybrid test/quasi-static test/seismic behavior分类
建筑与水利引用本文复制引用
蔡新江,贾红星,巩牧华,田石柱..基于单柱子结构模型的型钢混凝土异形柱框架抗震性能混合试验研究[J].建筑结构学报,2017,38(4):35-44,10.基金项目
国家自然科学基金项目(51308368,51278322),江苏省高校自然科学基金重大项目(13KJA560002),江苏高校优势学科建设工程项目(PAPD). （51308368,51278322）
