东南大学学报（自然科学版）2013，Vol.43Issue(2)：414-419,6.DOI:10.3969/j.issn.1001-0505.2013.02.035
双向水平加载下钢筋混凝土柱抗震性能的数值模拟
Numerical simulation of seismic performance of reinforced concrete columns under biaxial lateral loads
摘要
Abstract
To investigate the seismic performance of reinforced concrete (RC) columns under biaxial lateral loads, numerical analysis for tests of RC columns under spatial loads are performed by using the fiber model based on OpenSees software. The simulation results agree well with the test results in literature. The effects of the axial compression ratio and the hoop reinforcement ratio on the seismic performance of RC columns under biaxial lateral loads are analyzed. The analytical results show that biaxial lateral loads have little effect on the critical axial compression ratio, and the value of critical axial compression ratio is between 0. 4 and 0. 5. The bevel carrying capacity under biaxial lateral loads is greater than that under principal axial loads when the axial compression ratio is less than 0.1. At the critical axial compression ratio, the bevel carrying capacity decreases about 10% while the principal axial bearing capacity decreases about 35%. Moreover, the ultimate displacement angle and the accumulative hysteretic dissipation energy decrease obviously with the increase in the axial compression ratio. Therefore, the adverse influence of special effects on principle axial should be considered in the actual design. The hoop reinforcement ratio has obvious effect on ductility, but it lightly affects carrying capacity.关键词
钢筋混凝土柱/双向水平加载/抗震性能/OpenSees/纤维模型Key words
reinforced concrete column/ biaxial lateral load/ seismic performance/ OpenSees/ fiber model分类
建筑与水利引用本文复制引用
吕大刚,李雁军,王震宇..双向水平加载下钢筋混凝土柱抗震性能的数值模拟[J].东南大学学报（自然科学版）,2013,43(2):414-419,6.基金项目
国家自然科学基金资助项目(50978080,51078109,51178150). （50978080,51078109,51178150）
