薄壁空心高墩智能液压爬模系统设计与施工关键技术  

KEY TECHNOLOGY FOR DESIGN AND CONSTRUCTION OF INTELLIGENT HYDRAULIC CREEPING FORMWORK SYSTEM OF THIN-WALLED HIGH HOLLOW PIER

作　　者：周瑞刚 郭鹏 张兴瑞 ZHOU Rui-gang;GUO Peng;ZHANG Xing-rui(CCCC Third Highway Engineering Co.,Ltd.,100012,Beijing,China)

机构地区：[1]中交第三公路工程局有限公司,北京100012

出　　处：《建筑技术》2024年第22期2766-2769,共4页Architecture Technology

摘　　要：以牛栏江特大桥1号主墩为工程背景,设计了内外模同步爬升的智能液压爬模系统,通过在上平台顶部增设4道支架横梁,横梁上设有滚吊装置,并通过拉杆系统与内模连接;在增高后爬模系统的顶层平台上安装内吊装置,实现了内外模的同步爬升,解决了本项目施工空间小、无法采用传统爬模方式施工的难题。通过有限元软件对新型爬模系统进行验算,结果表明,不同状态下爬模系统各杆件的强度及变形均满足设计规范要求。研究了模板安装、墩柱分节施工、系统爬升等施工关键技术,通过与2号主墩采用的无支架翻模施工进行对比,表明新型智能液压爬模系统经济效益显著。Taking 1#main pier of Niulanjiang Super-large Bridge as an engineering case,an intelligent hydraulic creeping formwork system was designed for synchronous creeping of internal and external formworks,with 4 additional support beams at the top of the top platform,and a roller hanger on these beams.This system was connected to inner formworks through tie bars.The inner hoist on the top platform of the elevated creeping formwork system is used for synchronous creeping of internal and external formworks.Therefore,a solution is provided to the problems of conventional creeping formwork construction in small spaces.The new creeping system was also verified with finite element software.Results show that the strength and deformation of each member of the creeping formwork system in different states meets the design specifications.Key technologies for formwork installation,pier construction by sections and system creeping were studied and compared with the nobracket formwork rollover construction of 2#main pier.Results show that the new intelligent hydraulic formwork creeping system has remarkable economic benefits.

关 键 词：薄壁空心高墩 液压爬模 同步爬升 数值模拟 

分 类 号：TU74[建筑科学—建筑技术科学]