摘要
为研究新型外包钢-砼组合梁的钢-砼交界面相对滑移及变形性能,设计4根不同剪力连接系数足尺简支梁,其中1根为完全剪力连接组合梁,其余为部分剪力连接组合梁。通过对4根简支梁的试验研究,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。
To study the interface slip and the deflection properties of a new type of steel-encased concrete composite beams, four full size simply supported specimens with different shear connection coefficient were designed. One was a beam＇with full shear connection, and the others with partial shear connection. According to the experiment , a set of load-slip curves and load-deflection curves are derived. Based on these results, the interface slip development process and distribution laws are gained. Taking the interface slip into account, a nonlinear finite element analysis model is established by using the finite element analysis soft-ANSYS, and gains a reasonable shearing connection coefficient. Based on the actual code, a theoretical formula is proposed for deflection. The results of finite element model and theoretical formula are proved to be in good agreement with the experimental data.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2006年第6期13-17,共5页
Journal of Sichuan University (Engineering Science Edition)
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)
关键词
外包钢-砼组合梁
界面滑移
变形
非线性有限元分析
理论计算公式
steel-encased concrete composite beam
interface slip
deflection
nonlinear finite element analysis
theoretical formula
