多维动力加载条件下钢筋混凝土柱力学性能的研究  

Dynamic behaviors of reinforced concrete columns under multi-dimensional dynamic loadings

作　　者：王德斌[1] 范国玺[2] 张皓[3] 

机构地区：[1]大连交通大学土木与安全工程学院,辽宁大连116028 [2]中国海洋大学工程学院,山东青岛266100 [3]沈阳建筑大学土木工程学院,沈阳110168

出　　处：《振动与冲击》2016年第4期35-41,共7页Journal of Vibration and Shock

基　　金：国家自然科学青年基金(51408093;51308356);辽宁省教育厅科学研究一般项目(L2015098);沈阳市科技计划项目(F13-158-9-00)

摘　　要：通过钢筋混凝土柱在多维动力加载下的试验,研究了钢筋混凝土柱在不同加载速率下的动态力学性能。试验结果表明:加载速率的提高会有效提高构件的承载能力;随加载速率的提高,构件的刚度退化、强度退化和损伤进程均有不同程度的增强;双向加载及变轴力加载受加载速率的影响更为显著;构件发生破坏的区域更加局部化;构件的延性和变形能力有所降低,在双向加载并伴随有轴力变化的加载条件下表现尤为明显。The dynamic behaviors of reinforced concrete（ RC） columns under multi-dimensional dynamic loadings were investigated here. The test results showed that the load-bearing capacity of RC columns can be enhanced with increase in loading rate; their stiffness degradation,strength degradation and damage significantly increase with increase in loading rate; the effects of loading rate under bi-directional loading and varying axial loading on RC columns are more obvious; with increase in loading rate,the damage region distribution is more localized; the ductility and deformation capacity of RC columns decrease obviously with increase in loading rate,especially,under bi-directional loading with varying axial load.

关 键 词：钢筋混凝土柱 加载速率 双向加载 延性 破坏模式 

分 类 号：TU375[建筑科学—结构工程] TU528.571