国家会展中心(天津)工程大跨度超重人行天桥高空散装技术  

High-altitude Separated Assembling of Large Span Pedestrian Overpass in National Convention and Exhibition Center (Tianjin) Project

作　　者：张加鑫 魏鹏 刘飞[1] 王博 周志健[1] ZHANG Jiaxin;WEI Peng;LIU Fei;WANG Bo;ZHOU Zhijian(China Construction Eighth Engineering Division Co.,Ltd.,Shanghai 200135,China)

机构地区：[1]中国建筑第八工程局有限公司,上海200135

出　　处：《施工技术（中英文）》2021年第24期15-19,共5页Construction Technology

摘　　要：国家会展中心(天津)工程期大跨度人行天桥钢结构跨地铁施工过程中,存在吊装工况复杂、跨市政道路施工场地有限、工期影响因素多、跨度大、超重等问题。通过对人行天桥进行桁架吊装模拟和有限元分析,提出人行天桥由两端向中间合龙,高空散装吊装的施工方法。在保证安全、经济、质量的前提下高效完成人行天桥安装作业,且不影响市政道路通行,缩短施工周期,减少占路时间。During the construction of long-span pedestrian overpass steel structure across subway in National Convention and Exhibition Center(Tianjin) project, there are some problems, such as complex hoisting conditions, limited construction site across municipal roads, many influencing factors on construction period, large span and excessive weight. A construction method of closing from both ends to the middle of the pedestrian overpass and high-altitude bulk hoisting is proposed through truss hoisting simulation and finite element analysis of pedestrian overpass. The installation of pedestrian overpass can be completed efficiently under the premise of ensuring safety, economy and quality.

关 键 词：会展中心 人行天桥 吊装 高空散装 大跨度 

分 类 号：TU758[建筑科学—建筑技术科学]