钢筋混凝土烟囱温度应力计算方法  

CALCULATION METHOD OF THE TEMPERATURE STRESS OF REINFORCED CONCRETE CHIMNEY

作　　者：李晓文[1] 边瑞平[1] 袁龙飞[2] 尹磊[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]西安建筑科技大学建筑设计研究院,西安710055

出　　处：《工业建筑》2013年第4期82-85,共4页Industrial Construction

摘　　要：在钢筋混凝土烟囱筒身使用阶段的应力计算中,必须考虑温度应力。通过对GB 50051—2002《烟囱设计规范》(下称"规范")[1]关于使用阶段迎风侧竖向钢筋拉应力的数值分析与理论研究发现,在温度与外荷载(自重与风荷载)共同作用的情况下,规范的迎风侧钢筋拉应力计算公式存在不连续,为此,分析了造成不连续的原因,并且提出了改进的应力计算方法。For the stress calculation of a reinforced concrete chimney under serviceability limit state, thermal stress must be considered. Based on the ＂Code for Design of Chimneys＂ （GB 50051--2002）[11 chereafter referred to as ＂standard＂）, it was found by the numerical analysis and theoretic study on vertical reinforcement tensile stress on windward side during service that under co-action of temperature and load （ weight and wind load） , there was a discontinuity in the tensile stress calculation formula in the code, therefore, the causes for the discontinuity were analyzed, and a modified calculation method of temperature stress was also proposed.

关 键 词：烟囱 钢筋应变不均匀系数 钢筋拉应力 

分 类 号：TU375[建筑科学—结构工程] TU312