混凝土收缩徐变对超长结构温度应力的影响分析  

Analysis of the Influence of Concrete Shrinkage and Creep on Temperature Stress of Super-Long Structure

作　　者：黄长鑫 HUANG Chang-xin(Qingdao Longyue Real Estate Corporation,Qingdao 266000,China)

机构地区：[1]青岛隆岳置业有限公司,山东青岛266000

出　　处：《工程建设与设计》2022年第14期15-17,共3页Construction & Design for Engineering

摘　　要：结合某工程算例,探究了混凝土收缩和徐变对结构温度应力的影响。分析结果表明,常规分析计算方法未考虑混凝土收缩的不利影响,也未考虑混凝土徐变的有利影响,在一定程度上放大了结构底部应力,也缩小了上部结构应力;应全面考虑上述因素模拟的温差效应较为合理,对大体量、超长混凝土结构有一定指导意义。The influence of concrete shrinkage and creep on structural temperature stress is studied with an engineering example. Results show that the conventional analysis and calculation method does not consider the adverse effect of concrete shrinkage, and does not consider the favorable effect of concrete creep. As a result, the stress at the bottom of the structure is enlarged, and the stress on the upper structure is reduced. The temperature difference effect simulated by considering the above factors is more reasonable, and it has certain guiding significance for large-volume and super-long concrete structures.

关 键 词：混凝土结构 收缩 徐变 温度应力 

分 类 号：TU311[建筑科学—结构工程] TU375