超长混凝土板柱结构温度应力研究  

THERMAL STRESS RESEARCH ON BASE PARTING FOR OVERLONG SLAB-COLUMN STRUCTURE

作　　者：邵莹[1] 

机构地区：[1]中铁第一勘察设计院集团有限公司,西安710043

出　　处：《工业建筑》2009年第S1期317-320,435,共5页Industrial Construction

摘　　要：分析温度作用、混凝土收缩徐变效应对混凝土结构的作用,在T-B法混凝土徐变计算理论的基础上,应用按龄期调整的有效模量法来计算均匀温差作用下混凝土结构温度应力。研究底部分缝对超长混凝土板柱结构温度应力的影响,提出多种底部分缝形式,分析其对季节变化引起的均匀温差作用下超长板柱结构的温度应力和温度变形的削减,建立不同长度的结构模型,对其内力和变形进行比较,得出较为合理的底部分缝形式,为超长混凝土板柱结构温度裂缝控制提供参考。The effect of thermal load in concrete structure,concrete shrinkage and concrete creep effect are analyzed,effective moduli method for thermal stress analysis of overlong concrete slab-column structure in uniform temperature field causing by seasonal variation is established,based on T-B method and the theory of concrete creep.The reduced effect is researched for thermal stress of over long concrete slab-column structure using base parting,different base parting formations are presented to reduce the effect of thermal stress in uniform temperature field;and the best parting formations are got for overlong concrete slab-column structures with different lengths,which provides a reference for controlling extension of temperature cracks of this sort of staucture.

关 键 词：超长板柱结构 温度应力 底部分缝 

分 类 号：TU375[建筑科学—结构工程]