基于给定结构寿命的混凝土系杆拱桥设计及养护策略研究
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摘要
针对混凝土系杆拱桥的病害及养护策略问题,从给定结构寿命的设计及养护的理念出发,提出根据系杆拱桥各构件的等级与易损性分析结果,寻找出结构中既关键又易损的构件,在桥梁设计及养护排序选择时,优先及重点关注这些构件,实现针对性的养护,同时在安全性和经济性之间进行权衡,从而达到降低维护成本,有效地延长桥梁使用寿命的目的。
Aiming at the fault and maintenance strategy of concrete bowstring arch bridge,the article analyzes the results based on the grades and vulnerability of components for the bowstring arch bridge from the design and maintenance ideas of the given service life of structure,and looks for the components not only important but also easily damaged in the structures.These components are firstly and importantly plaid attention in the selection of bridge design and maintenance order for realizing the special maintenance.The security and the economy are also weighed to reach the aim of reducing the maintenance cost and efficiently prolonging the service life of bridge.
Aiming at the fault and maintenance strategy of concrete bowstring arch bridge,the article analyzes the results based on the grades and vulnerability of components for the bowstring arch bridge from the design and maintenance ideas of the given service life of structure,and looks for the components not only important but also easily damaged in the structures.These components are firstly and importantly plaid attention in the selection of bridge design and maintenance order for realizing the special maintenance.The security and the economy are also weighed to reach the aim of reducing the maintenance cost and efficiently prolonging the service life of bridge.
引文
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[12]谷音.基于结构易损性的斜拉桥多灾害防治问题研究[D].上海:同济大学博士后工作报告,2009.
[2]金凝.江苏常州公路大桥突然倒塌[EB/OL].http://www.jyenet.cn/new/china/200705/new_115369.shtml,2007-5-14.
[3]徐超.福建武夷山公馆大桥发生坍塌事故[EB/OL].http://news.163.com/11/0714/10/78TS7VKQ00014JB5.html,2011-7-14.
[4]上海同吉预应力工程有限公司.安徽省合肥市寿春路桥拱桥吊杆更换[EB/OL].http://www.tjpec.com/j_gu/icon06/06_sc.htm,2009-09-20.
[5]国家电力公司华东勘测设计研究院.叶青兜桥裂缝、吊杆损伤及索力测试报告[R].2003.
[6]王福敏,吕庆丰,宋琼瑶.结合桥梁寿命期成本论武隆乌江二桥旧桥改造方案的决策[J].公路交通技术,2005,22(1):84-86.
[7]陈艾荣.基于给定结构寿命的桥梁设计过程[M].北京:人民交通出版社,2009.
[8]Kong J S,Frangopol D M.Life-cycle reliability-based maintenancecost optimization of deteriorating structures with emphasis onbridges[J].Journal of Structural Engineering,2003,129(6):818-828.
[9]Mori Y,Ellingwood B R.Maintaining reliability of concrete structures.II:optimum inspection/repair[J].Journal of Structural Engineering,1994,120(3):846-862.
[10]柳承茂.结构易损性问题研究[D].北京:清华大学博士论文,2005.
[11]杜鹏.钢筋混凝土桥梁的地震易损性分析[J].工程抗震与加固改造,2007,29(1):89-93.
[12]谷音.基于结构易损性的斜拉桥多灾害防治问题研究[D].上海:同济大学博士后工作报告,2009.
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