南昌大学第二附属医院新型逆作法设计与实践  

Practice and Design of New Top-down Method in the Project of Second Hospital of Nanchang University

作　　者：李进军[1] 王卫东[1] 颜洪[2] 

机构地区：[1]现代设计集团华东建筑设计研究院有限公司,上海200002 [2]南昌大学第二附属医院基建科,南昌330006

出　　处：《建筑结构》2009年第S1期725-730,共6页Building Structure

摘　　要：基于南昌大学第二附属医院医疗中心大楼逆作法工程的成功实践,介绍了新型逆作法结构型式在江西地区的首次应用。本工程采用全逆作法总体设计思路,地上地下结构同步施工,在地下二层逆作施工同时完成地上十层结构的施工。采用结构梁板替代临时水平支撑、结构竖向构件框架柱与临时立柱相结合的一柱一桩竖向支撑、围护结构采用临时围护体的逆作法结构型式。工程实施监测结果表明,地下结构逆作施工对周边环境影响较小,上部结构沉降均匀稳定。本工程新型逆作法设计取得了良好的社会和经济效益,为江西地区类似工程的设计提供了借鉴。Basing on the successful application of the project of second affiliated hospital of Nanchang university,a new top-down design method was introduced on the base of success application in Jiangxi province firstly.The full top-down excavation method was used in the project,and ten floor structures were built at the process of excavation.The key design techniques of the new top-down method including:1) substituting level bracing system by basement slab;2) combine the structure vertical supporting column with the temporary vertical shoring;3) using the temporary fender cast-in-place piles as exterior-protected construction in top-down excavation process etc.A series of new techniques,which including the profiled bar-concrete controlled bracing system,substituting level bracing system by variable level basement roof slap, concrete ring beam on complex boundary condition,the top-down method of ete were first introduced and practiced in engineering originally.It is proved the new top-down method have a good economy effect and society effect.The method provides a new engineering design choice for the similar projects.

关 键 词：新型逆作法 支护结构与主体结构相结合 结构梁板替代支撑 一柱一桩 钢筋混凝土环梁节点 型钢混凝土变刚度转换结构 

分 类 号：TU476[建筑科学—结构工程]