轨道交通引起的振动在成层土中的传播规律
[Abstract]:With the rapid development of rail transit, especially rail lines covering urban areas more and more, the noise and vibration produced by ground rail transit have an important impact on the surrounding environment. On the one hand, noise and vibration to a certain level will interfere with people's daily life, and even affect people's emotions, sleep, rest and learning; on the other hand, vibration will also lead to liquefaction of the foundation, foundation sinking or uneven sinking. Cracks in the wall, inclining or even partial damage to buildings, especially to buildings with precision instruments, hospitals, laboratories, etc., which are particularly sensitive to vibration, will cause incalculable losses. Therefore, environmental vibration caused by rail transit has been paid more and more attention. In this paper, the current situation of research at home and abroad is summarized, and the research results and current situation of environmental vibration caused by rail transit are systematically expounded. The three-dimensional finite element model of train, track and subgrade is established by ANSYS, and the transient analysis is carried out. The dynamic interaction between railway track and foundation is considered from different angles under the impact load brought by rail transit. The attenuation law and vibration level evaluation of ground vibration caused by train operation are given. The results can provide a theoretical basis for the design and application of vibration isolation in urban rail transit engineering. The main research contents and results are as follows: (1) the 3D model of train-track subgrade is established by ANSYS finite element software to simulate the extension section of Shanghai Metro Line 2 Airport. The artificial viscoelastic boundary is adopted, the load is loaded by exciting force, and the model is calculated by half of the whole model. The calculation time is saved and the calculation efficiency is improved. The actual vibration of the Yanchang section of Shanghai Metro Line 2 Airport is simulated accurately. (2) in order to clarify the influence of track structure and foundation characteristics on the vibration and wave propagation characteristics of the ground caused by train traffic load, The variation law of vertical vibration acceleration and the evaluation of vibration level under different vibration directions, different measuring points and different speeds are investigated through different angles. In addition, the variation law of vibration frequency is summarized. (3) the gap (isolation ditch) and vibration isolation continuous wall are compared. The vibration isolation effect of three kinds of vibration isolation measures is compared, and the dynamic response of 3D foundation surface without or with different vibration isolation measures is demonstrated by contrast method. The application scope of three kinds of vibration isolation measures is briefly explained. The depth, width, thickness and the number of piles are analyzed and evaluated.
【学位授予单位】:沈阳建筑大学
【学位级别】:硕士
【学位授予年份】:2014
【分类号】:U211.3;TU43
【相似文献】
相关期刊论文 前10条
1 郑水明;姚运生;曾心传;;工程场地隔振沟减震效应[J];爆破;2008年03期
2 黄秋菊;沈顺高;邹剑强;徐克利;付桂宏;季新强;李爱群;杜东升;韩晓林;殷彤;李惠来;;隔振体系的数值模拟及连续屏障作用下控制点的振动响应[J];建筑结构;2009年10期
3 邓亚虹;夏唐代;陈敬虞;;车辆动荷载作用下隔振沟响应增强区数值分析[J];岩土工程学报;2006年12期
4 谢伟平;常亮;杜勇;;中南剧场隔振措施分析[J];岩土工程学报;2007年11期
5 王晓;严中保;杜涵文;;上海自由电子激光工程隔振沟减振数值分析[J];振动与冲击;2012年15期
6 孙成龙;史建平;辜小安;高亮;;铁路环境振动屏障隔振研究进展综述[J];铁路节能环保与安全卫生;2011年04期
7 傅玉勇;;高速铁路隔振沟的隔振效应研究[J];自然灾害学报;2011年05期
8 张庆武;;强夯工程隔振沟作用有限元分析与应用实例[J];工程勘察;2013年09期
9 张忠苗,吴世明,赵竹占,魏玉伦;打桩振害机理与监测防治[J];物探与化探;1993年01期
10 刘奉喜,刘建坤,防建宏,郭大华;多年冻土区铁路隔振沟隔振效果的数值分析[J];中国铁道科学;2003年05期
相关会议论文 前1条
1 史建平;孙成龙;;铁路交通屏障隔振研究进展[A];中国铁道学会环保委员会噪声振动学组年会学术交流论文集[C];2008年
相关博士学位论文 前4条
1 谭燕;铁路交通引发场地振动的传播规律与隔振措施研究[D];华中科技大学;2011年
2 袁俊;城市轨道交通隔振减振机理及措施研究[D];西安建筑科技大学;2010年
3 姚锦宝;考虑土—结构动力相互作用的轨道交通引起的环境振动及隔振措施研究[D];北京交通大学;2010年
4 栗润德;地铁列车引起的地面振动及隔振措施研究[D];北京交通大学;2009年
相关硕士学位论文 前10条
1 杨龙宇;大型变压器基础的隔振研究[D];西南交通大学;2015年
2 崔涛;移动荷载作用下场地土的响应和屏障隔振研究[D];西南科技大学;2015年
3 赵帅;三维多功能隔振支座的试验研究[D];东南大学;2015年
4 廉洁;轨道交通引起的振动在成层土中的传播规律[D];沈阳建筑大学;2014年
5 张鼎;典型工程及地质条件下地屏障的隔振机理理论分析及数学模型[D];北京交通大学;2009年
6 韦浩;冻土场地中列车振动荷载下的近场隔振屏障研究[D];哈尔滨工业大学;2011年
7 付强;重力墙与隔振沟工程减振作用研究[D];大连交通大学;2010年
8 郭玲玲;列车运行引起的建筑物振动及减隔振措施研究[D];大连理工大学;2012年
9 李思璐;高速公路环境振动对古遗址影响及屏障隔振研究[D];广州大学;2012年
10 季新强;设备隔振的数值模拟分析[D];东南大学;2006年
,本文编号:2249961
本文链接:https://www.wllwen.com/guanlilunwen/chengjian/2249961.html