桥头搭板与路基路面结构一体化研究

发布时间：2018-05-05 15:06

本文选题：桥头跳车 + 桥头搭板　；参考：《河北工业大学》2015年硕士论文

【摘要】：在日渐成熟的国内交通基础建设中,桥涵结构扮演着越来越重要的角色,在高速公路中尤为突出。有桥涵结构的出现,一个不可避免的问题也会随之而来,桥头跳车现象。桥头跳车即桥涵两端一定范围内桥面与台背路堤顶面产生的错位或不平顺,当行驶车辆以一定车速经过错位处时会产生跳动的一种现象。针对桥头跳车病害的预防与治理,国内外的专家学者都进行了广泛的研究探索。处治桥头跳车的根本途径,就是减少甚至避免桥台与台背路堤的差异沉降,而在解决差异沉降时一般从天然土基、路基和路面三个方面着手。设置桥头搭板作为一种有效而又经济的办法,得到了普遍的应用。桥头搭板是通过过渡两种结构物的差异沉降来防治桥头跳车的。本文在现有的搭板设计的基础上,提出将搭板与台背路堤的路基路面结构结合一体化的方法,尝试新的搭板设计形式。在对现有的桥头跳车处治方法特别是桥头搭板的设计的总结研究的基础上,通过运用ANSYS有限元软件,对搭板与路基路面结构组合一体化进行计算机模拟,对结果进行分析后,从变形、应力应变等方面验证了此种搭板形式的可行性,以及这种搭板形式在缓解桥头跳车现象中的作用。
[Abstract]:In the increasingly mature domestic traffic infrastructure, bridge and culvert structure plays a more and more important role, especially in the expressway. With the emergence of bridge and culvert structure, an inevitable problem will follow. Bridge-head jump is a phenomenon that the bridge deck and the top surface of the abutment back embankment are mislocated or irregularity in a certain range between the two ends of the bridge and culvert, and will jump when the driving vehicle passes through the misalignment at a certain speed. Experts and scholars at home and abroad have carried out extensive research and exploration for the prevention and treatment of bridge-head jumping disease. The basic way to deal with the jump of bridge head is to reduce or even avoid the differential settlement between abutment and abutment embankment, and to solve the differential settlement generally from three aspects of natural soil foundation, subgrade and pavement. As an effective and economical method, the bridge head slab has been widely used. The bridge head slab is used to prevent the bridge head from jumping by the differential settlement of the two structures. Based on the existing slab design, this paper puts forward the method of integrating the subgrade and pavement structure of overlay and abutment embankment to try a new design form of slabs. On the basis of summing up and studying the existing bridge head jumping treatment methods, especially the design of bridge head slab, by using ANSYS finite element software, computer simulation is carried out on the combination of lap slab and subgrade pavement structure, and the results are analyzed. The feasibility of this kind of slab form is verified from the aspects of deformation, stress and strain, and the role of this kind of slab form in alleviating the phenomenon of bridge-head jumping is proved.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416;U443

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