京张城际铁路隧道工程对长城的影响分析

发布时间：2018-06-08 16:11

本文选题：城际高铁 + 振动数值评估　；参考：《西南交通大学》2015年硕士论文

【摘要】：进入新世纪以来,随着我国经济建设的飞速发展,铁路的建设发展也迈出了崭新的一章。其所产生的铁路振动危害也越来越明显。而如今,在我国内省-省之间以及省-市之间越来越多的高速铁路在规划修建的时候无可避免地选择了一些敏感的路线,这些敏感路线会穿越以及沿途涉及到一些文物古迹,振动会对文物古迹造成无形的影响和破坏。因此基于如何有效的防护振动这一前提,预测振动影响就成为了新时代铁路干线的新难题。本文所研究背景是正在规划建设中的京张城际铁路,根据铁路路网规划,和选线计划需要,将会三次下穿北京八达岭长城和水关长城等重点保护单位,铁路的开通运营将不可避免地对长城的保护产生有害影响。高速列车引起的振动对长城本体而言,是典型的动力问题,本文采用定性分析和定量计算等方法,通过实地考察调研,开展了现场调查测试工作,利用瞬态表面波法对相关地段进行测试,获取地质参数和技术指标,通过对结构物主体进行纵波测试,得到主体结构物最大容许振动速度,对长城本体耐震程度进行理论计算,获得了列车振动源、岩体物理力学性能以及相关地段的地质参数资料,最后建立轨道-山体-隧道的三维模型,采用国际上通用的大型有限元动力分析软件ANSYS和Universal Mechanism,进行三维实体有限元数值分析模拟和有限元仿真模拟计算分析,研究新建北京至张家口城际列车对长城本体的影响。最终根据三种不同方法的结论对比,得到铁路选线的振动影响结论,并提出减振措施和施工爆破建议。为了保护我国重要的文化瑰宝—长城,评估京张城际列车运行对长城的影响程度,不仅是一个重要立项的依据之一,也为以后此类相关问题的深入研究提供理论和参考依据。
[Abstract]:In the new century, with the rapid development of China's economic construction, railway construction has also taken a new chapter. The damage caused by railway vibration is becoming more and more obvious. And today, more and more high-speed railways in our country, between provinces, cities and cities, inevitably choose sensitive routes when planning and building, and these sensitive routes will traverse and involve cultural relics and monuments along the way. Vibration will cause intangible impact and destruction on cultural relics and monuments. Therefore, based on the premise of how to protect vibration effectively, predicting the influence of vibration becomes a new difficult problem of railway trunk line in the new era. The background of this paper is the Beijing-Zhangzhou-Intercity Railway, which is under planning and construction. According to the railway network planning and the needs of the route selection plan, key protection units such as Beijing Badaling the Great Wall and Shuiguan the Great Wall will be cut down three times. The opening and operation of the railway will inevitably have harmful effects on the protection of the Great Wall. The vibration caused by high-speed train is a typical dynamic problem to the Great Wall itself. This paper adopts qualitative analysis and quantitative calculation methods, through field investigation and investigation, carries out field investigation and test work. By using the transient surface wave method to test the relevant sections, the geological parameters and technical indexes are obtained, and the maximum allowable vibration velocity of the main structure is obtained by measuring the longitudinal wave of the main body of the structure, and the degree of earthquake resistance of the main body of the Great Wall is calculated theoretically. The data of train vibration source, physical and mechanical properties of rock mass and geological parameters are obtained. Finally, a three-dimensional model of track mountain body tunnel is established. In this paper, a large-scale finite element dynamic analysis software ANSYS and Universal Mechanism are used to study the influence of the newly built Beijing-Zhangjiakou intercity train on the Great Wall body by means of three-dimensional solid finite element numerical analysis and finite element simulation calculation. Finally, according to the conclusion comparison of three different methods, the conclusion of vibration influence of railway line selection is obtained, and the vibration reduction measures and construction blasting suggestions are put forward. In order to protect the important cultural treasure of our country-the Great Wall, it is not only one of the important foundation to evaluate the influence degree of Beijing-Zhangcheng train operation on the Great Wall, but also provide theoretical and reference basis for further research on this kind of related issues.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U455

【参考文献】