高速铁路钢管混凝土系杆拱桥吊杆纠偏分析
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摘要
以高速铁路上某钢管混凝土系杆拱桥为实例,分析该桥吊杆偏位的原因及其影响,并对其成桥及运营各时期监测索力的差别进行判别,采用有限元软件Midas/Civil建立该下承式钢管混凝土系杆拱桥的空间有限元计算模型,根据索力监测数据结果通过迭代计算得出相应时期的拱桥状态,分析该拱桥在吊杆纠偏工况下的桥梁结构安全及其变形对列车运营安全的影响,并为后续的纠偏施工给出具体的操作建议,所得结果可用于指导该桥的吊杆纠偏施工,并可为同类桥梁的施工积累更多的可供借鉴的理论和实践经验。
This paper discusses the cause and influence of the rectification of the tied concrete- filled steel tubular arch bridge suspender of high-speed railway and confirms the differences of suspender tensile forces measured in different periods. The finite element program MIDAS / Civil is used to establish the spatial finite element calculating models of the concrete filled steel tubular arch bridge and the measured suspender tensile force is used to define the corresponding state of the arch bridge by way of successive iterations. The influence of suspender rectification on the safety of bridge structure and train operation is analyzed and specific operation suggestions are offered. The calculating results can be used to guide suspender rectification of arch bridges and provide adoptable theories and practical references for the construction of similar bridges.
This paper discusses the cause and influence of the rectification of the tied concrete- filled steel tubular arch bridge suspender of high-speed railway and confirms the differences of suspender tensile forces measured in different periods. The finite element program MIDAS / Civil is used to establish the spatial finite element calculating models of the concrete filled steel tubular arch bridge and the measured suspender tensile force is used to define the corresponding state of the arch bridge by way of successive iterations. The influence of suspender rectification on the safety of bridge structure and train operation is analyzed and specific operation suggestions are offered. The calculating results can be used to guide suspender rectification of arch bridges and provide adoptable theories and practical references for the construction of similar bridges.
引文
[1]陈宝春.钢管混凝土拱桥[M].北京:人民交通出版社,2007.
[2]林文泉,冯楚桥.尼尔森体系钢管混凝土拱桥的静、动力分析[J].铁道标准设计,2007(8):58-60.
[3]刘钊,吕志涛.竖吊杆与斜吊杆系杆拱结构的桥式研究[J].土木工程学报,2000,33(5):64-67.
[4]李乃强.大跨中承式拱桥吊杆索力检测及更换研究[D].长沙:湖南大学,2008:19-23.
[5]沈百忠,周雪峰,赵明朝,等.拱桥吊杆更换施工中的索力监测[J].交通标准化,2013,12(24):1-4.
[6]陈麟.某梁拱组合体系吊杆内力变化实测与分析[J].铁道标准设计,2013(4):41-45.
[7]陈宝春,韦建刚,吴庆雄.钢管混凝土拱桥设计计算方法与应用[M].北京:中国建筑工业出版社,2014.
[8]叶梅新,许润锋,谢晓慧.确定系杆拱桥吊杆索力张拉值的方法[J].交通科学与工程,2010,26(1):44-48.
[9]刘亚平.钢筋混凝土系杆拱桥吊杆张拉计算及控制的研究[J].中国港湾建设,2002(4):5-8.
[10]国家铁路局.TB10621—2014高速铁路设计规范[S].北京:中国铁道出版社,2015.
[11]中华人民共和国铁道部.TB10002.2—2005铁路桥梁钢结构设计规范[S].北京:中国铁道出版社,2010.
[12]黄国兴.中承式钢管混凝土拱桥吊杆更换设计与施工[J].公路交通科技,2011(2):95-99.
[2]林文泉,冯楚桥.尼尔森体系钢管混凝土拱桥的静、动力分析[J].铁道标准设计,2007(8):58-60.
[3]刘钊,吕志涛.竖吊杆与斜吊杆系杆拱结构的桥式研究[J].土木工程学报,2000,33(5):64-67.
[4]李乃强.大跨中承式拱桥吊杆索力检测及更换研究[D].长沙:湖南大学,2008:19-23.
[5]沈百忠,周雪峰,赵明朝,等.拱桥吊杆更换施工中的索力监测[J].交通标准化,2013,12(24):1-4.
[6]陈麟.某梁拱组合体系吊杆内力变化实测与分析[J].铁道标准设计,2013(4):41-45.
[7]陈宝春,韦建刚,吴庆雄.钢管混凝土拱桥设计计算方法与应用[M].北京:中国建筑工业出版社,2014.
[8]叶梅新,许润锋,谢晓慧.确定系杆拱桥吊杆索力张拉值的方法[J].交通科学与工程,2010,26(1):44-48.
[9]刘亚平.钢筋混凝土系杆拱桥吊杆张拉计算及控制的研究[J].中国港湾建设,2002(4):5-8.
[10]国家铁路局.TB10621—2014高速铁路设计规范[S].北京:中国铁道出版社,2015.
[11]中华人民共和国铁道部.TB10002.2—2005铁路桥梁钢结构设计规范[S].北京:中国铁道出版社,2010.
[12]黄国兴.中承式钢管混凝土拱桥吊杆更换设计与施工[J].公路交通科技,2011(2):95-99.