钢管初应力对钢管混凝土构件轴压刚度和抗弯刚度的影响  

EFFECTS OF INITIAL STRESS OF STEEL TUBES ON AXIAL COMPRESSION RIGIDITY AND FLEXURAL RIGIDITY OF CONCRETE\|FILLED STEEL TUBULAR MEMBERS

作　　者：尧国皇[1] 韩林海[1] 

机构地区：[1]福州大学土木建筑工程学院,福州350002

出　　处：《工业建筑》2004年第7期57-60,共4页Industrial Construction

基　　金：国家建设部科学计划项目 ( 0 4-2 -15 1);国家经贸委 2 0 0 0年国家技术创新重点专项计划项目;福建省科技计划重大科研项目( 2 0 0 2H0 0 7)。

摘　　要：钢管混凝土轴压刚度和抗弯刚度是对钢管混凝土结构进行抗震分析的重要指标。利用数值方法计算了考虑钢管初应力影响时的钢管混凝土轴压构件和纯弯构件荷载 -变形关系曲线 ,分析了初应力系数、截面含钢率、钢材和混凝土的强度等因素的影响规律。Axial compression regidity and flexural rigidity of concrete\|filled steel tubular are very important parameters for seismic behavior analysis.An attempt to predict the load\|deformation behavior of concrete\|filled steel tubular axial loaded members and pure bending members with the effects of initial stress in the steel tubes considered is proposed in this paper.Based on the theoretical model,influence of the initial stress coefficient,sectional steel ratio,as well as strength of the materials is discussed.Finally,formulas for the calculation of the bending rigidity of concrete\|filled steel tubular members with the effects of initial stress in the steel tubes considered are developed.

关 键 词：钢管混凝土 钢管初应力 轴压剐度 抗弯剐度 

分 类 号：TU398.9[建筑科学—结构工程]