钢筋混凝土宽梁-柱抗震性能配筋方案对比研究  

Comparative Study on Seismic Performance of Reinforced Concrete Wide Beam Column

作　　者：王剑楠 张锋 WANG Jian-nan;ZHANG Feng

机构地区：[1]西安云帆市政工程咨询有限公司,陕西西安710061 [2]陕西通宇公路研究所有限公司,陕西西安710100

出　　处：《内蒙古公路与运输》2022年第6期48-51,55,共5页Highways & Transportation in Inner Mongolia

摘　　要：为分析配筋率对钢筋混凝土宽梁抗震性能的影响,文章对水平地震荷载作用下的钢筋混凝土宽梁进行了数值分析,利用有限元软件ANSYS对钢筋混凝土宽梁的各种模型进行了对比研究。对比的参数为箍筋配筋率、抗拉钢筋配筋率和抗压钢筋配筋率,其中抗拉钢筋配筋率为横截面积的1.5%、1%、0.7%、0.3%,抗压钢筋配筋率为抗拉钢筋配筋率的0.8、0.6、0.5、0.4,箍筋配筋率为每延米0.130%、0.067%。探讨了各参数对结构耗能能力、破坏模式、超强系数以及刚度等指标的影响。研究结果表明:选取的参数对于各种性能均有影响,箍筋配筋率是影响宽梁抗震性能的主要因素,箍筋配筋率越大,宽梁在水平地震荷载作用下的极限承载力越高;增大箍筋配筋率可以增强结构延性,从而使得结构具有较高的耗能能力与超强系数;纵向钢筋配筋率主要影响结构的刚度与地震荷载作用下的破坏模式。In order to analyze the influence of reinforcement percentage on the seismic performance of reinforced concrete wide beams,numerical analysis of wide beams under horizontal seismic load was presented in this paper,and diverse models of reinforced concrete wide beams were studied numerically by using finite element software ANSYS.The studied parameters were web reinforcement percentage,tensile reinforcement percentage,and compressive reinforcement percentage.The values of tensile reinforcement percentage were(1.5%,1%,0.7%,0.3%)of cross-section area,compressive reinforcement percentage were(0.8,0.6,0.5,0.4)of the tensile reinforcement ratio and web reinforcement percentage were(0.130%,0.067%)per linear meter.The influence of these parameters was studied on energy dissipation capacity,failure mode,over strength factor and stiffness of the structure.The results demonstrated that the studied parameters affected all these properties,and the web reinforcement percentage was the main factor affecting the seismic performance of wide beams.The larger the percentage of web reinforcement,the higher the ultimate bearing capacity of wide beams under horizontal seismic load.Increasing the web reinforcement percentage could enhance the ductility of the structure,so that the structure has higher energy dissipation capacity and over strength factor.The longitudinal reinforcement percentage mainly affected the stiffness of the structure and the failure mode under seismic load.

关 键 词：钢筋混凝土结构 配筋率 参数分析 宽梁 抗震性能 

分 类 号：U416[交通运输工程—道路与铁道工程]