摘要
为满足建筑抗震设计规范对混凝土框架结构侧向刚度规则性的要求,分析了柱侧向刚度修正系数与梁线刚度的关系.以5榀4层单跨平面框架为研究对象,比较了各层的侧向刚度.验证了通过小幅度弱化底层梁,稍大幅度弱化底层以上其余3层梁,可将底层侧向刚度提高至不小于其上层侧向刚度70%以及不小于其相邻上3层侧向刚度平均值的80%的事实,该思路可供结构工程设计人员参考.
To satisfy the regularity requirements of concrete frame lateral stiffness set by the codes for seismic designof buildings,the relationship between compensation factor for column lateral stiffness and linear stiffness of beamwas analyzed. Lateral stiffness of all storeys was compared after five single span plane frames were investigated eachwith four storeys. It was verified that the lateral stiffness of bottom storey increased to not less than 70% of that in thestorey above and not less than 80% of the average stiffness of the three storeys above when the beam of bottom storeyweakened within a narrow range while the beams of three storeys above weakened within a slight wide range. Theidea above provides reference to structural engineers.
出处
《河南科学》
2015年第7期1169-1171,共3页
Henan Science
关键词
弱梁法
框架
侧向刚度
薄弱层
weak beam method
frame
lateral stiffness
weak storey
