武汉火车站预应力简支梁支撑体系研究与应用.pdf

2010年4月 施工技术 第39卷第4期 CONSTRUCTION TECHNOLOGY 11 武汉火车站预应力简支梁支撑体系研究与应用 周清1，金学勤2，周华松1 (1.中建三局建设工程股份有限公司工程总承包公司，湖北武汉430070； 2.江西省高等级公路管理局省庄养路站，江西南昌330100) [摘要]武汉火车站铁路高架桥1联平行布置，群桥施工工期紧、条件复杂.综合考虑工期、成本、技术条件等因 素，选定钢桁架支撑体系.介绍了支撑体系的结构布置，通过验算，指出贝雷梁节点与支座对齐、分配梁与贝雷梁 以夹片螺栓连接等构造措施.另外重点介绍支撑体系整体安装技术，预压、滑移施工技术，指出滑移过程中应严格 控制其稳定性和滑移速度. [关键词]武汉火车站；支撑体系；整体安装；预压；滑移 [中图分类号]TU731.2[文献标识码]A [文章编号]1002-8498(2010)04-0011-03 Research and Application of Support System of Simply Supported Prestressed Box Girder in Wuhan Station Zhou Qing' Jin Xueqin2 Zhou Huasong' (1.General Contraction Company of CCTEB Wuhan Hubei 430070 China; 2.Shengzhuang Road Maintenance Station of Jiangxi High Grade Road Administration Bureau Nanchang Jiangxi 330100 China) Abstract:Wuhan Station has ten parallel arc rigid bridges.Because of tight construction period plex situations and considering period cost and technology condition prehensively steel truss support system is chosen.The structural setting for support system is introduced as well as some structural methods are indicated by checking such as bailey beam joint should be of alignment with support and distributive girder is connected with bailey beam by clamping piece type bolts.Furthermore the integral installation technology for support system and construction technology for preloading and sliding it is presented that stability and sliding velocity should be controlled strictly during sliding. Key words:Wuhan Station;support system;integral installation;preloading;s...