均布荷载作用下钢-混凝土组合梁滑移及变形的理论计算  

THEORETICAL ANALYSIS OF SLIP AND DEFORMATION OF STEEL-CONCRETE COMPOSITE BEAM UNDER UNIFORMLY DISTRIBUTED LOADS

作　　者：蒋丽忠[1] 余志武[1] 李佳[1] 

机构地区：[1]中南大学铁道校区土木建筑学院,长沙中国410075

出　　处：《工程力学》2003年第2期133-137,共5页Engineering Mechanics

基　　金：国家自然科学基金资助项目(59878007)

摘　　要：对均布荷载作用下简支钢-混凝土组合梁的滑移及其对组合梁变形挠度影响的理论计算进行了研究。利用Goodman弹性夹层假设及弹性体变形理论,推导了简支钢-混凝土组合梁的界面滑移和挠度变形的理论计算公式。该理论公式既能描述组合梁的界面滑移规律,也体现了界面滑移对组合梁变形挠度的影响。该理论公式将为钢-混凝土组合结构极限承载力和变形挠度的有限元计算提供理论基础。This paper is concerned with the interface slip of steel-concrete composite beam under uniformly distributed loads. The effect of the slip on the deformation of beam is studied. Using Goodman抯 elasticmultiplayer assumption and elastic deformation theory, the analytical formulae of interface slip and the deformation of simply supported steel-concrete composite beam are obtained. These formulae can not onlydescribe the interface slip distribution, but also account for its effect on deformation. The present theoreticalanalysis can benchmark finite element analysis of load bearing capacity and deformation of steel-concrete composite beams.

关 键 词：钢-混凝土组合梁 均布荷载 界面滑移 变形挠度 理论计算公式 

分 类 号：TU312[建筑科学—结构工程]