【作者】 郑建波； 蒋欢军； 陈林之；

【Author】 Jianbo ZHENG~1,Huanjun JIANG~2,Linzhi CHEN~2 (1.Educational Technology and Equipment Station in Nanhui District,Shanghai 201300,China; 2.State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

【机构】 上海市南汇区教育技术装备站； 同济大学土木工程防灾国家重点实验室；

【摘要】 以轴压比、剪跨比、配箍率和纵筋配筋率为主要参数,进行了钢筋混凝土结构构件(柱、梁)的低周反复加载试验。试验中详细记录了构件各损伤阶段的裂缝宽度和破坏时混凝土保护层的剥落高度,从宏观现象中得到了构件地震损伤破坏的物理过程。通过整理和分析试验数据,对比研究了各参数对抗震性能的影响,并对抗震设计与非抗震设计构件进行了对比研究,试验结果表明在实际工程中按抗震要求设置箍筋是非常有必要的。更多还原

【Abstract】 Considering the main design parameters of axial compressive force ratio,shear span ratio,longitudinal steel ratio,and transverse steel ratio,the low-cycle reserved loading test on reinforced concrete structural components(beams and columns) was carried out.The crack width corresponding to individual damage state and spalling height of concrete cover were recorded during the test.From the observed phenomena during the test,the general damage progress of the structural components was obtained.And by analyzing the test data,the effect of each design parameter on the seismic performance was studied.The behavior of the component non-seismic designed was compared with that seismic designed.The comparison shows that it is necessary to set the transverse steel in line with the current seismic design code.更多还原