国家会展项目D0区预应力转换梁施工阶段分析  

CONSTRUCTION STAGE ANALYSIS FOR PRE-STRESSED BEAM OF D0 DISTRICT OF NATIONAL EXHIBITION CENTRE

作　　者：陈新喜[1] 葛杰[1] 陈华[1] 郑钧雅 邹于捷 

机构地区：[1]中国建筑第八工程局有限公司,上海200122 [2]上海建科预应力技术工程有限公司,上海200135

出　　处：《建筑技术》2014年第12期1137-1139,共3页Architecture Technology

摘　　要：中国博览会会展综合体(国家会展)项目D0区第4层转换梁采用后张有粘结预应力技术,由于梁截面大、跨度大、上部荷载大且施工工期紧,该转换梁需分批次张拉。考虑4种不利状态下的施工阶段,对预应力转换梁进行有限元分析,得到不同施工阶段下的混凝土最大拉压应力值和梁构件的最大变形。通过不同施工阶段下的有限元分析结果与规范要求进行对比,保证了转换梁的施工质量。Post tensioning pre-stressing technique is used in transfer beam of the fourth layer in China Expo Complex project hall DO. The transfer beam is need to be tension batches because of larger sections and span and relatively short construction period. The four unfavorable construction stage is considered in this paper. The pre-stressed transfer beam is analyzed, and the maximum stress value and deformation of concrete members are obtained. The contrast of different construction stage analysis result and specification are given and construction quality is guaranteed.

关 键 词：有粘结预应力 分批次张拉 施工阶段 转换梁 

分 类 号：TU745.2[建筑科学—建筑技术科学]