留后浇带预应力混凝土结构施工短暂状况分析  

Analysis of Short-time Situation of Prestressed Concrete Structures with a Strip of Post Pouring Concrete During Construction

作　　者：赵挺生[1] 潘先轶[2] 方东平[2] 

机构地区：[1]华中科技大学土木工程与力学学院,武汉430074 [2]清华大学土木系,北京100084

出　　处：《建筑结构》2005年第4期50-52,共3页Building Structure

基　　金：国家自然科学基金资助项目 (5 0 3 780 5 1);中国博士后科学基金资助项目 (2 0 0 3 )

摘　　要：施工期间的预应力混凝土结构是时变体系。通过预应力等效荷载分析和梁板柱混凝土结构的施工阶段受力分析,计算作用于预应力混凝土结构上的荷载。将留后浇带预应力混凝土梁模拟为弹性支座梁,研究了留后浇带预应力混凝土结构施工期间的力学性能。结果表明,预应力等效荷载和施工荷载直接影响预应力混凝土结构的施工安全。The prestressed reinforced concrete structure during construction is a time-dependent structural system.The loads acting on it include construction load and prestressed equivalent loads.Based on the theory of prestressed concrete and time-dependent structures of beam-slab-column concrete structures during construction,the loads are studied.The structures are simulated as a beam with elastic bearing, then a model is proposed for the analysis of prestressed concrete structures with a strip of post pouring concrete during construction.Study shows that construction load and prestressed equivalent loads have obvious effect on its safety during construction.

关 键 词：混凝土结构施工 后浇带 预应力混凝土结构 预应力混凝土梁 施工期间 弹性支座梁 受力分析 施工阶段 荷载分析 力学性能 施工安全 直接影响 施工荷载 等效荷载 梁板 

分 类 号：TU248.6[建筑科学—建筑设计及理论] TU755