摘要
为研究配钢管高强混凝土芯柱的异强组合柱(SGCC)的抗震性能,以钢管内外混凝土的强度(fcc、fco)、组合柱内钢管高强混凝土芯柱的套箍系数(θ)、钢管外围混凝土配箍特征值(λv)、轴压比(n)为主要参数,设计了11根SGCC。采用ABAQUS软件建立其有限元模型,并对10根类似试件开展验证分析,将仿真分析结果与试验结果进行对比,验证了模型的合理性。基于此开展11根SGCC试件的参数分析,探究了不同参数对试件的滞回曲线、骨架曲线、耗能能力、刚度退化、抗力衰减和延性等抗震性能指标的影响规律。结果表明,fcc、fco、λv和n对试件抗震性能的影响相对较大,本文分析结果可为该类构件的抗震设计提供一定的技术支撑。
In order to study the seismic behavior of strength-gradient composite columns with built-in high-strength concrete filled steel tube(SGCC),the strength of the inner and outer concrete steel tube(fcc,fco),the hoop coefficient of high-strength concrete filled steel tube(θ),the stirrup characteristic value of outer concrete(λv),the axial compression ratio(n) are selected as the main parameters,and 11 SGCC specimens are designed.The finite element model of 10 similar experimental specimens is established by ABAQUS.By comparing the simulation analysis results with the test results,the rationality of the finite element model is verified.Therefore,the parameter analysis of 11 SGCC is carried out to explore the influence of different parameters on the seismic behavior indexes such as hysteresis curve,skeleton curve,energy dissipation capacity,stiffness degradation,resistance reduction and ductility of SGCC specimens.The results show that fcc,fco,λvand n have great influence on the seismic performance of those specimens,and it can provide technical support for seismic design of this member.
作者
计静
杨毛毛
姜良芹
刘迎春
于殿友
Ji Jing;Yang Mao-mao;Jiang Liang-qin;Liu Ying-chun;Yu Dian-you(Heilongjiang Key Laboratory of Disaster Prevention,Mitigation and Protection Engineering,Northeast Petroleum University,Daqing 163318,China;Department of Civil and Environmental Engineering,The Hong Kong Polytechnic University,Hong Kong 999077,China)
出处
《工程抗震与加固改造》
北大核心
2020年第6期114-122,共9页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金面上项目(51178087)
黑龙江省自然科学基金联合引导项目(LH2020E018)
哈尔滨工业大学结构灾变与控制教育部重点实验室开放基金(HITCE201908)
中国地震局工程力学研究所基本科研业务费专项资助项目(2020D07)
东北石油大学研究生创新科研项目(JYCX_CX05_2018)。
