安庆长江铁路大桥总体施工方案
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摘要
安庆长江铁路大桥采用双塔三索面钢桁梁斜拉桥和6孔64m跨现浇简支箱梁布置形式,铁路4线。深水区3号、4号桥塔墩采用先围堰后平台的双壁钢围堰施工方案;5号墩桩基采用定位桩平台施工方案,承台采用双壁钢围堰施工方案。浅水区6号、7号及W01号、W02号桥墩桩基采用双栈桥加定位桩平台施工方案,承台采用钢板桩围堰施工方案。桥塔起始段采用支架法施工,其余采用大节段液压爬模施工;横梁采用支架法施工,分2层浇注。主桥无索区钢梁采用膺架法架设,桥塔墩有索区钢梁采用架梁吊机对称伸臂架设;在3号墩设置桁内开启式提升站取梁;全桥设2个合龙口,先中跨、后边跨合龙。非通航孔桥64m箱梁采用支架法现浇施工。水中墩平台、围堰及栈桥考虑不同设防水位。该桥已于2012年12月实现多点精确合龙。
Anqing Changjiang River Railway Bridge was arranged as a 4-track railway steel truss girder cable-stayed bridge with double pylons,triple cable planes and with 6 spans of 64-m cast-in-situ simply-supported box girders.The pylon piers No.3 and No.4 of the bridge in the deep water area were constructed by the scheme of double-wall steel cofferdams,in which the cofferdams were set up first and the working platforms were late.The pile foundation of the pier No.5 was constructed by the positioning pile platform and the pile cap of the pier was constructed by the double-wall steel cofferdam.The pile foundations of the piers No.6,No.7 and the piers W01 and W02 in the shallow water area were constructed by the twin trestle bridges and positioning pile platforms and the pile caps thereof were constructed by the steel sheet pile cofferdams.The starting segments of a pylon were constructed by the scaffolding method while the rest of the segments were constructed by the large segment hydraulic climbing formwork.The cross beam of the pylon was cast in two layers by the scaffolding method.The steel truss girder of the main bridge in the areas without stay cables was erected by the scaffolding method and in the areas of the pylons with stay cables was erected by the deck cranes by the balanced two-side cantilever method.At the pier No.3,the opening lifting station was arranged inside the steel truss girder to pick up the girder blocks.There were two closure gaps arranged for the whole bridge,the sequences of closure of the girder proceeded from the central span first and the side span late.The 64-m box girders for the non-navigable span bridge were cast in situ by the scaffolding method.The protection of the platforms for the in-water piers,of the cofferdams and trestle bridges was considered and determined according to different water levels.The multi-point and accurate closure of the bridge was completed in December,2012.
Anqing Changjiang River Railway Bridge was arranged as a 4-track railway steel truss girder cable-stayed bridge with double pylons,triple cable planes and with 6 spans of 64-m cast-in-situ simply-supported box girders.The pylon piers No.3 and No.4 of the bridge in the deep water area were constructed by the scheme of double-wall steel cofferdams,in which the cofferdams were set up first and the working platforms were late.The pile foundation of the pier No.5 was constructed by the positioning pile platform and the pile cap of the pier was constructed by the double-wall steel cofferdam.The pile foundations of the piers No.6,No.7 and the piers W01 and W02 in the shallow water area were constructed by the twin trestle bridges and positioning pile platforms and the pile caps thereof were constructed by the steel sheet pile cofferdams.The starting segments of a pylon were constructed by the scaffolding method while the rest of the segments were constructed by the large segment hydraulic climbing formwork.The cross beam of the pylon was cast in two layers by the scaffolding method.The steel truss girder of the main bridge in the areas without stay cables was erected by the scaffolding method and in the areas of the pylons with stay cables was erected by the deck cranes by the balanced two-side cantilever method.At the pier No.3,the opening lifting station was arranged inside the steel truss girder to pick up the girder blocks.There were two closure gaps arranged for the whole bridge,the sequences of closure of the girder proceeded from the central span first and the side span late.The 64-m box girders for the non-navigable span bridge were cast in situ by the scaffolding method.The protection of the platforms for the in-water piers,of the cofferdams and trestle bridges was considered and determined according to different water levels.The multi-point and accurate closure of the bridge was completed in December,2012.
引文
[1]农代培,季跃华,徐炳法.安庆长江铁路大桥主墩大型深水基础施工方案与关键技术[J].桥梁建设,2012,42(6):1-7.(NONG Dai-pei,JI Yue-hua,XU Bing-fa.Construc-tion Scheme and Key Construction Techniques for Large Deepwater Foundations of Main Piers of Anqing Changjiang River Railway Bridge[J].Bridge Construc-tion,2012,42(6):1-7.in Chinese)
[2]肖海珠,徐伟,高宗余.安庆铁路长江大桥设计[J].桥梁建设,2009,(5):6-8,20.(XIAO Hai-zhu,XU Wei,GAO Zong-yu.Design of Anqing Changjiang River Railway Bridge[J].BridgeConstruction,2009,(5):6-8,20.in Chinese)
[3]汪水清,农代培.安庆长江铁路大桥3号墩巨型圆围堰气囊下河技术[J].桥梁建设,2012,42(2):1-6.(WANG Shui-qing,NONG Dai-pei.Techniques of Air Bag Method Launching for Huge Circular Steel Coffer-dam of Pier No.3of Anqing Changjiang River Railway Bridge[J].Bridge Construction,2012,42(2):1-6.in Chinese)
[4]刘爱林,农代培.安庆长江铁路大桥3号墩围堰锚碇系统设计与施工[J].桥梁建设,2011,(6):1-5,41.(LIU Ai-lin,NONG Dai-pei.Design and Construction of Mooring System for Cofferdam of Pylon Pier No.3 of Anqing Changjiang River Railway Bridge[J].Bridge Construction,2011,(6):1-5,41.in Chinese)
[5]杜健.白马河特大桥边跨上部结构64m混凝土简支箱梁施工技术[J].桥梁建设,2006,(S1):63-65.(DU Jian.Construction Techniques for 64-m Span Simply-Supported Concrete Box Girders of Side Span Superstructure of Baima River Bridge[J].Bridge Construction,2006,(S1):63-65.in Chinese)
[6]佟海鹏,张世奎.杭州下沙大桥栈桥施工[J].重庆交通学院学报,2003,(S1):8-10,28.(TONG Hai-peng,ZHANG Shi-kui.Construction of Trestle Bridge for Xiasha Bridge in Hangzhou[J].Journal of Chongqing Jiaotong University,2003,(S1):8-10,28.in Chinese)
[7]任回兴,欧阳效勇,贺茂生,等.苏通大桥主塔深水基础的设计与施工[J].中国工程科学,2009,(3):3843.(REN Hui-xing,OUYANG Xiao-yong,HE Maosheng,et al.Design and Construction of Deep Water Foundations for Main Pylons of Sutong Bridge[J].Engineering Sciences,2009,(3):38-43.in Chinese)
[8]黄中华,许佳平.乌龙江特大桥主墩水上施工平台设计与施工[J].桥梁建设,2007,(S2):78-81,94.(HUANG Zhong-hua,XU Jia-ping.Design and Construction of Working Platorfms over Water for Main Piers of Wulong River Bridge[J].Bridge Construction,2007,(S2):78-81,94.in Chinese)
[9]罗洋波.64m跨简支箱梁整体现浇施工技术[J].城市建设,2011,(4):214-215.(LUO Yang-bo.Construction Techniques for Integral Casting-in-Situ of 64-m Span Simply-Supported Box Girders[J].City Construction,2011,(4):214-215.in Chinese)
[10]邓永锋.黄冈公铁两用长江大桥桥塔墩顶4个节间钢梁架设方案[J].桥梁建设,2012,42(2):7-12.(DENG Yong-feng.Erection Scheme for Four Panels of Steel Truss Girders at Top of Pylon Pier of Huanggang Changjiang River Rail-cum-Road Bridge[J].Bridge Construction,2012,42(2):7-12.in Chinese)
[11]王东辉.京沪高速铁路南京大胜关长江大桥主跨钢梁架设方案比选[J].铁道标准设计,2009,(11):59-61.(WANG Dong-hui.Comparison and Selection of Erection Schemes for Main Span Steel Truss Girder ofNanjing Dashengguan Changjiang River Bridge on Beijing-Shanghai High-Speed Railway[J].Railway Standard Design,2009,(11):59-61.in Chinese)
[12]王序森,唐寰澄.桥梁工程[M].北京:中国铁道出版社,1995.(WANG Xu-sen,TANG Huan-cheng.Bridge Engi-neering[M].Beijing:China Railway Publishing House,1995.in Chinese)
[13]铁建设[2010]241号,高速铁路桥涵工程施工技术指南[S].(TJS[2010]No.241,Guide to Construction Tech-niques of High-Speed Railway Bridge and Culvert[S].)
[2]肖海珠,徐伟,高宗余.安庆铁路长江大桥设计[J].桥梁建设,2009,(5):6-8,20.(XIAO Hai-zhu,XU Wei,GAO Zong-yu.Design of Anqing Changjiang River Railway Bridge[J].BridgeConstruction,2009,(5):6-8,20.in Chinese)
[3]汪水清,农代培.安庆长江铁路大桥3号墩巨型圆围堰气囊下河技术[J].桥梁建设,2012,42(2):1-6.(WANG Shui-qing,NONG Dai-pei.Techniques of Air Bag Method Launching for Huge Circular Steel Coffer-dam of Pier No.3of Anqing Changjiang River Railway Bridge[J].Bridge Construction,2012,42(2):1-6.in Chinese)
[4]刘爱林,农代培.安庆长江铁路大桥3号墩围堰锚碇系统设计与施工[J].桥梁建设,2011,(6):1-5,41.(LIU Ai-lin,NONG Dai-pei.Design and Construction of Mooring System for Cofferdam of Pylon Pier No.3 of Anqing Changjiang River Railway Bridge[J].Bridge Construction,2011,(6):1-5,41.in Chinese)
[5]杜健.白马河特大桥边跨上部结构64m混凝土简支箱梁施工技术[J].桥梁建设,2006,(S1):63-65.(DU Jian.Construction Techniques for 64-m Span Simply-Supported Concrete Box Girders of Side Span Superstructure of Baima River Bridge[J].Bridge Construction,2006,(S1):63-65.in Chinese)
[6]佟海鹏,张世奎.杭州下沙大桥栈桥施工[J].重庆交通学院学报,2003,(S1):8-10,28.(TONG Hai-peng,ZHANG Shi-kui.Construction of Trestle Bridge for Xiasha Bridge in Hangzhou[J].Journal of Chongqing Jiaotong University,2003,(S1):8-10,28.in Chinese)
[7]任回兴,欧阳效勇,贺茂生,等.苏通大桥主塔深水基础的设计与施工[J].中国工程科学,2009,(3):3843.(REN Hui-xing,OUYANG Xiao-yong,HE Maosheng,et al.Design and Construction of Deep Water Foundations for Main Pylons of Sutong Bridge[J].Engineering Sciences,2009,(3):38-43.in Chinese)
[8]黄中华,许佳平.乌龙江特大桥主墩水上施工平台设计与施工[J].桥梁建设,2007,(S2):78-81,94.(HUANG Zhong-hua,XU Jia-ping.Design and Construction of Working Platorfms over Water for Main Piers of Wulong River Bridge[J].Bridge Construction,2007,(S2):78-81,94.in Chinese)
[9]罗洋波.64m跨简支箱梁整体现浇施工技术[J].城市建设,2011,(4):214-215.(LUO Yang-bo.Construction Techniques for Integral Casting-in-Situ of 64-m Span Simply-Supported Box Girders[J].City Construction,2011,(4):214-215.in Chinese)
[10]邓永锋.黄冈公铁两用长江大桥桥塔墩顶4个节间钢梁架设方案[J].桥梁建设,2012,42(2):7-12.(DENG Yong-feng.Erection Scheme for Four Panels of Steel Truss Girders at Top of Pylon Pier of Huanggang Changjiang River Rail-cum-Road Bridge[J].Bridge Construction,2012,42(2):7-12.in Chinese)
[11]王东辉.京沪高速铁路南京大胜关长江大桥主跨钢梁架设方案比选[J].铁道标准设计,2009,(11):59-61.(WANG Dong-hui.Comparison and Selection of Erection Schemes for Main Span Steel Truss Girder ofNanjing Dashengguan Changjiang River Bridge on Beijing-Shanghai High-Speed Railway[J].Railway Standard Design,2009,(11):59-61.in Chinese)
[12]王序森,唐寰澄.桥梁工程[M].北京:中国铁道出版社,1995.(WANG Xu-sen,TANG Huan-cheng.Bridge Engi-neering[M].Beijing:China Railway Publishing House,1995.in Chinese)
[13]铁建设[2010]241号,高速铁路桥涵工程施工技术指南[S].(TJS[2010]No.241,Guide to Construction Tech-niques of High-Speed Railway Bridge and Culvert[S].)
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