摘要
施工方法对桥梁成桥状态内力具有重大影响,对桥梁不同施工顺序下的内力进行分析具有非常重要的工程意义。对于钢管混凝土系杆拱桥,常见的施工方法主要有先梁后拱法和先拱后梁法2种。为探究上海罗蕰河拱桥采用不同的施工顺序对成桥的影响,采用MIDAS-CIVIL(2015)建立罗蕰河拱桥一次落架、先梁后拱和先拱后梁3种状态下的有限元模型,计算获得相应的内力分布,分析不同施工方法对罗蕰河系杆拱桥成桥状态内力的影响,并以弯曲应变能为指标,评价3种施工方案的区别。
The construction method has a great influence on the internal force of the completed bridge.It is of great engineering significance to analyze the internal force of the bridge under different construction sequences.For concrete-filled steel tubular tied arch bridge,there are two common construction methods:first arch after beam method and first arch after beam method.In order to explore the influence of different construction sequence on the completion of Luowen River arch bridge in Shanghai,MIDASCIVIL(2015)is used to establish the finite element model of Luowen River arch bridge in three states:one-time falling frame,first beam after arch and first arch after beam,to calculate the corresponding internal force distribution,and to analyze the influence of different construction methods on the internal force of Luowen River arch bridge in the completion state,The difference of three construction schemes is evaluated with the bending strain energy as the index.
作者
闫兴非
陈玮
张凯龙
彭俊
YAN Xing-fei;CHEN Wei;ZHANG Kai-long;PENG Jun(Shanghai Urban Construction Design&Research InstituteCo.,Ltd.,Shanghai 200125,China;Shanghai Engineering Research Center of Industrialized&Prefabricated Municipal Civil Engineering,Shanghai 200125,China)
出处
《中国市政工程》
2020年第3期30-34,128,共6页
China Municipal Engineering
基金
上海市科学技术委员会课题(17DZ2251900,19XD1432400)
国家住房和城乡建设部课题(2018-K9-039)。
关键词
钢管混凝土
系杆拱桥
施工顺序
成桥状态
静力分析
弯曲应变能
concrete filled steel tube
tied arch bridge
construction sequence
bridge state
static analysis
bending strain energy
