部分剪力连接新型外包钢-砼组合梁的滑移性能  

Research on the Interface Slip of New Type Steel-encased Concrete Composite Beams with Partial Shear Connection

作　　者：石启印[1] 章荣国[1] 李爱群[2] 

机构地区：[1]江苏大学理学院,江苏镇江212013 [2]东南大学混凝土与预应力混凝土结构教育部重点试验室,江苏南京210096

出　　处：《湘潭大学自然科学学报》2006年第3期112-116,共5页Natural Science Journal of Xiangtan University

基　　金：江苏省自然科学基金资助项目(BK2004064);江苏省建设厅基金资助项目(JS200321)

摘　　要：针对典型的钢-砼组合梁的不足,提出一种新型外包钢-砼组合梁.为研究其钢-砼交界面相对滑移及变形性能,通过4根足尺简支梁的试验研究,得到组合梁的荷载-滑移、荷载-挠度关系曲线.根据试验结果分析了新型外包钢-砼组合梁交界面相对滑移发展的过程和分布规律.利用有限元分析软件ANSYS,对组合梁的交界面相对滑移性能进行了非线性有限元分析,提出剪力连接系数的合理范围.在基于现行规范的基础上提出了组合梁跨中挠度的建议计算公式.把有限元模型和建议公式的计算结果与试验结果进行比较,三者吻合良好.In view of at some problems of conmon steel-concrete leams,a new type of steel -encased concrete composite beams is put forward.To study the interface slip and defomation character,four simple supported specimens of full size have been performed ,the load-slip curves,load-deflection curves are established through the experiment,Based on these results, the interface slip development process and laws are gained, Considering the interface slip, a nonlinear finite element analysis model is established by using finite element analysis soft - ANSYS, and gained a reasonable shearing connection coefficient. Based on actual code, a theoretieal formnla is proposed for deflection. The results of finite element model and the,theoreal formula are proved to be in good agreement with the experimental results.

关 键 词：外包钢-砼组合梁 部分剪力连接 界面滑移 变形 试验研究 理论分析 

分 类 号：TU398[建筑科学—结构工程] TU317.1