胶合木-混凝土组合梁抗弯刚度分析  

Bending stiffness analysis of glued Timber-Concrete Composite(TCC) beam

作　　者：袁帅[1] 贺国京[1] 易锦[1] 冷骏[1] 曹娅蒙 Yuan Shuai;He Guojing;Yi Jin;Leng Jun;Cao Yameng(College of Civil Engineering, Central South University of Forestry ＆ Technology, Changsha 410004, China)

机构地区：[1]中南林业科技大学土木工程学院,湖南长沙410004

出　　处：《建筑科学》2018年第5期17-22,共6页Building Science

基　　金：国家林业局948项目(2014-4-51);国家自然科学基金项目"现代木-混凝土组合结构桥梁设计理论及应用基础研究"(51478485);湖南省教育厅一般科研项目"现代木-混凝土组合结构构件共同工作性能试验研究"(17C1654)

摘　　要：结合正常使用阶段胶合木-混凝土组合梁的梁截面受力特点和对试验资料分析,建立了胶合木-混凝土组合梁刚度计算模型,提出了考虑滑移影响后的简化抗弯刚度公式,使组合梁的抗弯刚度公式得到优化。为验证公式正确性,设计并建造了3根剪力连接程度不同的胶合木-混凝土组合梁构件。通过加载试验,结果表明:理论推导公式与试验结果吻合较好,传统抗弯刚度计算公式不再适用于组合梁,应给以适当折减。The characteristics of beam section and analysis of experimental data are analyzed by using the composite beam of glued Timber-Concrete Composite（TCC） beam in normal service stage. The calculation model of glued Timber-Concrete Composite（TCC） beam is established. The simplified flexural stiffness formula considering the influence of composite beam slippage is proposed. The bending stiffness formula of the composite beam is optimized. In order to verify the correctness of the formula,three kinds of glued Timber-Concrete Composite（TCC）beam with different shear connections are designed and constructed. Through the loading test,the results show that the theoretical formula is in good agreement with the experimental results,and the traditional bending stiffness calculation formula is not applicable to the composite beam and should be appropriately reduced.

关 键 词：胶合木-混凝土组合梁 静力荷载试验 抗弯刚度 滑移 部分剪力连接 

分 类 号：TU398.9[建筑科学—结构工程]