金口河区大渡河大桥桥面结构体系加固改造技术
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摘要
金口河大渡河大桥是主跨为175 m中承式钢管混凝土悬链线拱桥,桥面结构体系由混凝土横梁和T型桥面板组成,由于桥面结构和吊杆的破坏使桥面存在整体坍塌的安全隐患,须对该桥桥面结构体系进行加固改造。加固前采用结构验算方法评估该桥结构状态,针对病害提出具体加固设计,并对设计后的结构进行结构验算。通过加固改造以后,计算结果表明,车行道桥面板和新增钢纵梁均满足要求,桥面结构体系的竖向基频提高约12%,横桥向基频提高约18%,大桥桥面结构体系静力性能和动力性能均得到明显改善。
Dadu River Bridge in Jinkouhe District is a mid-supported CFST catenary arch bridge with a main span of 175 m.The bridge deck structure consists of concrete beams and T-shaped bridge decks.The bridge deck may be completely collapsed due to the damage of the bridge deck structure and the derrick.The bridge deck structure system shall be strengthened and reconstructed.Before the reinforcement,the structural verification method is used to evaluate the structural state of the bridge,and the specific reinforcement design is proposed for the disease,and the structural verification is carried out for the designed structure.After reinforcement and transformation,the calculation results show that the roadway bridge deck and the new longitudinal steel beam meet the requirements.The vertical fundamental frequency of the bridge deck structure system is increased by about 12%,and the transverse fundamental frequency is increased by about 18%.The static performance and dynamic performance of the structural system improved significantly.
Dadu River Bridge in Jinkouhe District is a mid-supported CFST catenary arch bridge with a main span of 175 m.The bridge deck structure consists of concrete beams and T-shaped bridge decks.The bridge deck may be completely collapsed due to the damage of the bridge deck structure and the derrick.The bridge deck structure system shall be strengthened and reconstructed.Before the reinforcement,the structural verification method is used to evaluate the structural state of the bridge,and the specific reinforcement design is proposed for the disease,and the structural verification is carried out for the designed structure.After reinforcement and transformation,the calculation results show that the roadway bridge deck and the new longitudinal steel beam meet the requirements.The vertical fundamental frequency of the bridge deck structure system is increased by about 12%,and the transverse fundamental frequency is increased by about 18%.The static performance and dynamic performance of the structural system improved significantly.
引文
[1]陈宝春,韦建刚,周俊,等.我国钢管混凝土拱桥应用现状与展望[J].土木工程学报,2017,50(6):50-61.CHEN Baochun,WEI Jiangang,ZHOU Jun,et al.Application status and prospects of CFST arch bridges in China[J].China Civil Engineering Journal,2017,50(6):50-61.
[2]陈宝春.钢管混凝土拱桥应用与研究进展[J].公路,2008(11):57-66.CHEN Baochun.Application and research progress of concrete filled steel tubular arch bridges[J].Highway,2008(11):57-66.
[3]彭桂瀚,袁保星,陈宝春.加设钢管桁架纵梁改造中承式拱桥悬挂桥道系的应用研究[J].公路工程,2009,34(3):109-114.PENG Guihan,YUAN Baoxing,CHEN Baochun.Research on strengthening suspended deck system for half-through arch bridge by setting longitudinal steel-tubular trusses[J].Highway Engineering,2009,34(3):109-114.
[4]滕宇.钢管混凝土拱桥检测评估与加固技术研究[D].西安:长安大学,2016.TENG Yu.Detection of CFST arch bridge and reinforcing technology assessment[D].Xi'an:Chang'an University,2016.
[5]王学智.桥梁损伤评估及对策专家系统BEES[D].上海:同济大学,1990.WANG Xuezhi.Expert system for bridge damage assessment and countermeasures BEES[D].Shanghai:Tongji University,1990.
[6]陈清华.Y特大桥桥面系病因及加固方案受力性能研究[D].长沙:中南大学,2011.CHEN Qinghua.Study on the cause of diseases of the bridge deck of Y bridge and the stress performance of the reinforcement scheme[D].Changsha:Central South University,2011.
[7]陈红.丫髻沙大桥桥面系加固设计[J].桥梁建设,2013,43(2):93-97.CHEN Hong.Strengthening design of floor system of Yajisha bridge[J].Bridge Construction,2013,43(2):93-97.
[8]周水兴,陈山林.桥道系对钢管混凝土拱桥吊杆受力影响的研究[J].桥梁建设,2007,37(2):28-31.ZHOU Shuixing,CHEN Shanlin.Study of influences of floor systems on structural behavior of suspenders of concrete-filled steel tube arch bridges[J].Bridge Construction,2007,37(2):28-31.
[9]张武,吴运宏.钢管混凝土拱桥动态悬吊式主梁结构改造技术[J].桥梁建设,2016,46(2):103-107.ZHANG Wu,WU Yunhong.Rehabilitation techniques for dynamically suspended main girder structure of a CFSTarch bridge[J].Bridge Construction,2016,46(2):103-107.
[10]刘玉擎.日本新西海钢管混凝土拱桥的设计概况[J].世界桥梁,2006(2):5-7.LIU Yuqing.Overview of the design of New Nishihai CFST arch bridge in Japan[J].World Bridge,2006(2):5-7.
[11]罗文韬.桥面系形式对下承式拱桥受力性能的影响[D].重庆:重庆交通大学,2014.LUO Wentao.Impact analysis of bridge floor system for through bridge's stress performance[D].Chongqing:Chongqing Jiaotong University,2014.
[12]黄卫.大跨径桥梁钢桥面铺装设计理论与方法[M].北京:中国建筑工业出版社,2006.HUANG Wei.Research on theory and method of longspan steel bridges deck surfacing design[M].Beijing:China Building Industry Press,2006.
[13]崔军.大跨度钢管混凝土拱桥受力性能分析[D].杭州:浙江大学,2003.CUI Jun.Analysis of mechanical behavior of long-span CFST arch bridge[D].Hangzhou:Zhejiang University,2003.
[14]胡光伟,黄卫,张晓春.润扬大桥钢桥面铺装层力学分析[J].公路交通技术,2002(4):1-3.HU Guangwei,HUANG Wei,ZHANG Xiaochun.Mechanical analysis of steel bridge pavement of the Runyang bridge[J].Journal of Highway and Transportation Technology,2002(4):1-3.
[2]陈宝春.钢管混凝土拱桥应用与研究进展[J].公路,2008(11):57-66.CHEN Baochun.Application and research progress of concrete filled steel tubular arch bridges[J].Highway,2008(11):57-66.
[3]彭桂瀚,袁保星,陈宝春.加设钢管桁架纵梁改造中承式拱桥悬挂桥道系的应用研究[J].公路工程,2009,34(3):109-114.PENG Guihan,YUAN Baoxing,CHEN Baochun.Research on strengthening suspended deck system for half-through arch bridge by setting longitudinal steel-tubular trusses[J].Highway Engineering,2009,34(3):109-114.
[4]滕宇.钢管混凝土拱桥检测评估与加固技术研究[D].西安:长安大学,2016.TENG Yu.Detection of CFST arch bridge and reinforcing technology assessment[D].Xi'an:Chang'an University,2016.
[5]王学智.桥梁损伤评估及对策专家系统BEES[D].上海:同济大学,1990.WANG Xuezhi.Expert system for bridge damage assessment and countermeasures BEES[D].Shanghai:Tongji University,1990.
[6]陈清华.Y特大桥桥面系病因及加固方案受力性能研究[D].长沙:中南大学,2011.CHEN Qinghua.Study on the cause of diseases of the bridge deck of Y bridge and the stress performance of the reinforcement scheme[D].Changsha:Central South University,2011.
[7]陈红.丫髻沙大桥桥面系加固设计[J].桥梁建设,2013,43(2):93-97.CHEN Hong.Strengthening design of floor system of Yajisha bridge[J].Bridge Construction,2013,43(2):93-97.
[8]周水兴,陈山林.桥道系对钢管混凝土拱桥吊杆受力影响的研究[J].桥梁建设,2007,37(2):28-31.ZHOU Shuixing,CHEN Shanlin.Study of influences of floor systems on structural behavior of suspenders of concrete-filled steel tube arch bridges[J].Bridge Construction,2007,37(2):28-31.
[9]张武,吴运宏.钢管混凝土拱桥动态悬吊式主梁结构改造技术[J].桥梁建设,2016,46(2):103-107.ZHANG Wu,WU Yunhong.Rehabilitation techniques for dynamically suspended main girder structure of a CFSTarch bridge[J].Bridge Construction,2016,46(2):103-107.
[10]刘玉擎.日本新西海钢管混凝土拱桥的设计概况[J].世界桥梁,2006(2):5-7.LIU Yuqing.Overview of the design of New Nishihai CFST arch bridge in Japan[J].World Bridge,2006(2):5-7.
[11]罗文韬.桥面系形式对下承式拱桥受力性能的影响[D].重庆:重庆交通大学,2014.LUO Wentao.Impact analysis of bridge floor system for through bridge's stress performance[D].Chongqing:Chongqing Jiaotong University,2014.
[12]黄卫.大跨径桥梁钢桥面铺装设计理论与方法[M].北京:中国建筑工业出版社,2006.HUANG Wei.Research on theory and method of longspan steel bridges deck surfacing design[M].Beijing:China Building Industry Press,2006.
[13]崔军.大跨度钢管混凝土拱桥受力性能分析[D].杭州:浙江大学,2003.CUI Jun.Analysis of mechanical behavior of long-span CFST arch bridge[D].Hangzhou:Zhejiang University,2003.
[14]胡光伟,黄卫,张晓春.润扬大桥钢桥面铺装层力学分析[J].公路交通技术,2002(4):1-3.HU Guangwei,HUANG Wei,ZHANG Xiaochun.Mechanical analysis of steel bridge pavement of the Runyang bridge[J].Journal of Highway and Transportation Technology,2002(4):1-3.