胡志明市—中梁高速公路某路桥过渡段动态响应及坡稳定性分析

发布时间：2018-04-22 23:22

本文选题：高速公路 + 路桥过渡段　；参考：《北京交通大学》2014年硕士论文

【摘要】：随着科技的不断发展,越南高速公路也得到前所未有的发展,方便、舒适、快捷已经成为目前高速公路的最大优点。唯一美中不足的是高速公路路桥过渡段不均匀沉降得不到很好的处理,时常出现跳车现象,从而影响行车速度和乘客的舒适程度,也为行车安全带来很大隐患。路桥过渡段是设计和施工中的薄弱环节,但长期以来,对采用哪种过渡段设置方法较为合理,至今仍未达成完全的共识。本论文通过讨论了越南公路交通系统和路基以及公路路桥过渡段的现状与缺点,针对越南胡志明市-中梁高速公路位于KM27+260的过渡段,分析桥头跳车的现象和原因,并使用ABAQUS/CAE为工作平台建立了数值模型,进行静态模拟分析与动态模拟分析,主要研究分析影响路桥过渡段平顺性的主要因素,并己取得了一些有价值的结论。通过比较和分析不同过渡段填土的弹性模量参数的弯沉结果,总结了过渡段沉降的发展规律,分析了如何设计最优的倒梯形形式的过渡段,从而减小差异沉降,消除桥头跳车现象。最后,对该路桥过渡段在越南特有的强降雨条件下进行降雨入渗对路基边坡的稳定性分析。这些研究结果将对越南高速公路过渡段设计有借鉴的意义。
[Abstract]:With the continuous development of science and technology, Vietnam highway has been unprecedented development, convenience, comfort, speed has become the greatest advantage of the highway. The only drawback is that the uneven settlement of the transition section of the highway and bridge is not well dealt with, and the phenomenon of jumping often occurs, which affects the driving speed and the comfort degree of the passengers, and also brings great hidden trouble to the driving safety. The transition section of road and bridge is a weak link in design and construction, but for a long time, it has not reached a complete consensus as to which method to set up the transition section is more reasonable. This paper discusses the present situation and shortcomings of highway traffic system, roadbed and highway bridge transition section in Vietnam. Aiming at the transition section of Ho Chi Minh City to Zhongliang Expressway located in KM27 260, this paper analyzes the phenomenon and reasons of bridge head jumping. A numerical model based on ABAQUS/CAE is established for static simulation analysis and dynamic simulation analysis. The main factors affecting the ride comfort of the transition section are studied and some valuable conclusions have been obtained. By comparing and analyzing the deflection results of the elastic modulus parameters of the different transition sections, the development law of the settlement of the transition section is summarized, and how to design the optimal transition section with the inverted trapezoid form is analyzed to reduce the differential settlement. Eliminate bridge jump phenomenon. Finally, the stability of roadbed slope is analyzed under the condition of strong rainfall in Vietnam. These results will be useful for the design of highway transition section in Vietnam.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.1

【参考文献】