外包钢板-混凝土组合连梁刚度分析

发布时间：2018-03-16 01:17

  本文选题：外包钢板-混凝土组合连梁　切入点：钢管混凝土　出处：《建筑结构学报》2014年08期 　论文类型：期刊论文

【摘要】：联肢剪力墙弹性阶段的内力分布、抗侧刚度等工作性能主要受墙肢与连梁刚度的影响。为了准确分析外包钢板-混凝土联肢组合剪力墙的受力性能,对外包钢板-混凝土组合连梁的刚度进行了分析。基于钢板与混凝土无相对变形和忽略混凝土抗拉强度的基本假定,建立了组合连梁钢与混凝土无滑移的截面内力与变形之间的关系,并推导了截面刚度的计算公式。对于常用工程设计参数范围内的组合连梁,考虑滑移后得到的抗侧刚度相比无滑移情况减小了10%~24%。通过对无滑移组合连梁刚度公式中的混凝土部分贡献的折减(折减系数为0.5),得到了无特殊界面构造的外包钢板-混凝土组合连梁的刚度计算公式。通过与有限元分析和试验结果的对比,验证了公式的准确性。
[Abstract]:The internal force distribution and lateral stiffness of coupled shear wall are mainly affected by the stiffness of wall and connecting beam. In order to accurately analyze the mechanical behavior of sheet-concrete composite shear wall, The stiffness of sheet-concrete composite beam is analyzed. Based on the assumption that there is no relative deformation between steel plate and concrete and the tensile strength of concrete is neglected, The relationship between internal force and deformation of steel and concrete sections without slip is established, and the calculation formula of section stiffness is derived. The lateral stiffness after considering slippage is reduced by 10% and 24% compared with that without slip. By reducing the contribution of concrete part in the stiffness formula of non-slip composite connecting beam (the reduction coefficient is 0.5), the outer clad steel without special interface structure is obtained. Stiffness calculation formula of slab-concrete composite beam. Compared with finite element analysis and test results, The accuracy of the formula is verified.
【作者单位】： 清华大学土木工程系;清华大学土木工程安全与耐久教育部重点实验室;
【基金】：国家科技支撑计划项目(2011BAJ09B01) 国家自然科学基金项目(51178246) 清华大学自主科研计划(2012Z06117)
【分类号】：TU398.2
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本文编号：1617684