考虑混凝土徐变后轴心受压柱的最大配筋率  

The Maximum Reinforcement Ratio of the Axial Compressive Pillar Considering the Concrete Creep

作　　者：黄达海[1] 张开臣[1] 杜彦凯[1] 

机构地区：[1]北京航空航天大学土木工程系,北京100083

出　　处：《建筑科学》2006年第1期6-9,共4页Building Science

基　　金：湖北省自然科学基金项目(9815BHB985-1-4)

摘　　要：从理论与应用两方面,分析了混凝土徐变对钢筋混凝土轴心受压柱最大配筋率的影响;在反复荷载作用条件下,导出了防止混凝土卸载开裂的混凝土轴心受压柱最大配筋率的计算公式;分析了影响钢筋混凝土轴心受压柱最大配筋率的几种因素,并用实例演示了考虑混凝土徐变后,该公式在结构设计中的应用。成果可以为港口、仓储与码头等建筑物的结构设计提供参考。From the theory and the application, this paper analyses the effect of the concrete creep on the maximum reinforcement ratio of the axial compressed pillar;In the case of the repeated loading,this paper deduces the formula of the maximum reinforcement ratio which can prevent the cracking of the axial compressive pillar from cracking when it is unloaded; This paper also analyses some factors that affect the maximum reinforcement ratio of the axial compressive pillar, and with the practical example this paper demonstrates the application of this formulation in the structuraldesign considering the concrete creep. And this paper can provide references for the design of the structures such as the pert, the storehouse and the wharf.

关 键 词：混凝土徐变 轴心受压柱 卸载 最大配筋率 

分 类 号：TU375.3[建筑科学—结构工程] TU312.1