悬索桥—系杆拱组合双层桥抗震性能研究
发布时间：2018-10-23 12:11
【摘要】：城市交通流量不停增长,造成城市道路日益拥堵,限制城市发展,还会造成大量汽车尾气的排放和环境污染。双层桥梁的出现在部分缓解了土地资源的稀缺,降低了土地使用成本,双层桥以及空间立体交通网的建设可以一定程度上解决城市交通的拥堵问题,但是双层桥梁以及双层桥抗震的研究却滞后于实际建设。 本文首先介绍了双层桥的发展概况以及目前的研究现状,介绍了桥梁在遭受地震作用时的地震灾害,以及当前采用的桥梁抗震分析理论。在此基础之上,做了以下工作： (1)利用Midas/Civil有限元软件建立了一座下层自锚式悬索桥上层系杆拱桥双层桥的空间模型,分析当双层桥分别采用盆式橡胶支座和铅芯橡胶支座时的动力特性的对比。 (2)分析当双层桥的支座采用盆式橡胶支座时,在E2地震作用下,双层桥的上部拱桥与下部悬索桥的内力以及位移的地震反应。 (3)介绍地震波选取的原则以及地震波选取的方法,将金渤湾双层桥的盆式橡胶支座改为铅芯橡胶支座进行了时程分析,分别研究水平纵向地震作用下和横向地震作用下结构的内力以及位移的地震反应。 (4)考虑不同刚度效应的模型,有Kelvin模型、Maxwell模型、Wiechert模型等,介绍粘滞阻尼器的构造及原理,研究不同粘滞阻尼器参数对于结构响应的影响,并依据选取阻尼器参数的主要原则选则阻尼器参数。
[Abstract]:Urban traffic flow is increasing, resulting in increasing congestion of urban roads, restricting urban development, and also causing a large number of vehicle exhaust emissions and environmental pollution. The emergence of double-deck bridges partly alleviates the scarcity of land resources and reduces the cost of land use. The construction of double-deck bridges and spatial three-dimensional traffic networks can solve the problem of urban traffic congestion to a certain extent. But the study of double-deck bridges and double-deck bridges lags behind the actual construction. This paper first introduces the development of double-deck bridge and the present research situation, and introduces the earthquake disaster of the bridge when it is affected by earthquake, as well as the seismic analysis theory of bridge used at present. On this basis, the following work has been done: (1) using Midas/Civil finite element software, a spatial model of the upper tied-arch double-deck bridge of a self-anchored suspension bridge is established. The dynamic characteristics of the double-deck bridge are compared when the basin rubber bearing and the lead rubber bearing are used respectively. (2) when the double deck bridge supports adopt the basin rubber bearing, under the action of E2 earthquake, The internal force and seismic response of the upper arch bridge and the lower suspension bridge of double-deck bridge are introduced. (3) the principle of seismic wave selection and the method of seismic wave selection are introduced. The time history analysis of changing the basin rubber bearing to lead rubber bearing of Jinbo Bay double deck bridge is carried out. The internal force and displacement response of the structure under horizontal longitudinal earthquake and lateral earthquake are studied respectively. (4) considering different stiffness effects, there are Kelvin model, Maxwell model, Wiechert model and so on. This paper introduces the structure and principle of viscous damper, studies the influence of different parameters of viscous damper on structural response, and selects the parameters of damper according to the main principle of selecting damper parameters.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U442.55
[Abstract]:Urban traffic flow is increasing, resulting in increasing congestion of urban roads, restricting urban development, and also causing a large number of vehicle exhaust emissions and environmental pollution. The emergence of double-deck bridges partly alleviates the scarcity of land resources and reduces the cost of land use. The construction of double-deck bridges and spatial three-dimensional traffic networks can solve the problem of urban traffic congestion to a certain extent. But the study of double-deck bridges and double-deck bridges lags behind the actual construction. This paper first introduces the development of double-deck bridge and the present research situation, and introduces the earthquake disaster of the bridge when it is affected by earthquake, as well as the seismic analysis theory of bridge used at present. On this basis, the following work has been done: (1) using Midas/Civil finite element software, a spatial model of the upper tied-arch double-deck bridge of a self-anchored suspension bridge is established. The dynamic characteristics of the double-deck bridge are compared when the basin rubber bearing and the lead rubber bearing are used respectively. (2) when the double deck bridge supports adopt the basin rubber bearing, under the action of E2 earthquake, The internal force and seismic response of the upper arch bridge and the lower suspension bridge of double-deck bridge are introduced. (3) the principle of seismic wave selection and the method of seismic wave selection are introduced. The time history analysis of changing the basin rubber bearing to lead rubber bearing of Jinbo Bay double deck bridge is carried out. The internal force and displacement response of the structure under horizontal longitudinal earthquake and lateral earthquake are studied respectively. (4) considering different stiffness effects, there are Kelvin model, Maxwell model, Wiechert model and so on. This paper introduces the structure and principle of viscous damper, studies the influence of different parameters of viscous damper on structural response, and selects the parameters of damper according to the main principle of selecting damper parameters.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U442.55
【相似文献】
相关期刊论文 前10条
1 潘盛山;许文俊;庄年;张哲;;双层桥支座布置对抗震性能的影响[J];防灾减灾工程学报;2010年S1期
2 沈锦华,王永平,王素琴;双层预应力混凝土箱梁桥的实验研究[J];哈尔滨建筑工程学院学报;1984年01期
3 陈文艳;舒展望;王安宇;唐国胜;;黄浦江首座公轨双层桥——闵浦二桥引桥工程总体方案研究[J];地下工程与隧道;2008年01期
4 肖鸣;;大跨径简支双层桥面复合桁梁桥[J];市政技术;2013年06期
5 文会;;世界大桥之最[J];世界文化;2006年06期
6 郑为明,陈q，
本文编号：2289192
本文链接：https://www.wllwen.com/kejilunwen/jiaotonggongchenglunwen/2289192.html
