考虑收缩徐变的施工期大跨砼结构内力分析  

A Research of Large Span Concrete Structure Reliability Considering Creep and Shrinkage during Construction

作　　者：赵军[1] 缪昌国[1] 阳小超 戴昌强 

机构地区：[1]桂林理工大学广西岩土力学与工程重点实验室,土木与建筑工程学院,桂林541004

出　　处：《科学技术与工程》2017年第5期252-256,共5页Science Technology and Engineering

基　　金：国家自然科学基金(51568016);广西矿冶与环境科学实验中心项目(KH2011YB025)资助

摘　　要：针对施工期钢筋混凝土大跨结构的安全问题,结合工程实例,获取了考虑收缩徐变和未考虑收缩徐变时施工期内力和变形的时变规律。研究表明:当采用二层支模时,第二层梁的内力和变形在拆模阶段将发生突变,对结构造成不可忽略的影响。For reinforced concrete during the construction safety of long-span structure,combined with the engineering example,creep and shrinkage of obtained considering not considering the creep of contraction time varying law of internal force and deformation during the construction,research shows that: when using the mould on the second floor,the second beam of internal force and deformation in ripping stage will mutate,significant effects on the structure.

关 键 词：施工期 收缩 徐变 大跨 

分 类 号：TU375.4[建筑科学—结构工程]