橡胶集料混凝土改善框架抗震性能的计算分析实例  

CASE STUDIES OF SEISMIC BEHAVIOR OF THE DEVELOPED FRAME BY CRC

作　　者：李成芳[1] 朱涵[2] 杨林虎[2] 

机构地区：[1]天津港津建筑设计工程有限公司,天津300457 [2]天津大学建筑工程学院,天津300072

出　　处：《工业建筑》2008年第z1期415-418,共4页Industrial Construction

基　　金：国家自然科学基金项目(50478087)

摘　　要：橡胶集料混凝土与普通混凝土相比其独特性主要表现在:阻尼大、弹性模量低、韧性高、变形能力大大高于普通混凝土(极限应变可达0.006)。将普通混凝土框架的横梁用橡胶集料混凝土替换,通过有限元软件计算分析表明:改善后,框架的自振周期增加,地震剪力标准值减小,橡胶集料钢筋混凝土框架有较好的延性,抗震性能有所提高。Crumb Rubber Concrete(CRC) is characterized by large damp coefficient,low Yong Modulus,high toughness,and large deformation(ultimate compressive strain is up to 0.006),in comparison to controlled concrete.CRC was substituted for the beams of the plain frames,and was analyzed by the FEM.The results showed that the natural vibration period of the frame increased,and the shear force decreased,which led to the increment of the ductility of the frame.In a word,seismic behavior of the frame increased to some extent.

关 键 词：橡胶集料混凝土 横梁 自振周期 抗震性能 

分 类 号：TU352.11[建筑科学—结构工程] TU528