| 地裂缝-隧道-围岩动力相互作用模型试验研究 |
| |
| 引用本文： | 杨龙伟,杨觅,门玉明,王鹏,李坚.地裂缝-隧道-围岩动力相互作用模型试验研究[J].西北地震学报,2019,41(3):710-716. |
| |
| 作者姓名： | 杨龙伟 杨觅 门玉明 王鹏 李坚 |
| |
| 作者单位： | 长安大学地质工程与测绘学院, 陕西 西安 710054,陕西省高速公路建设集团公司, 陕西 西安 710065,长安大学地质工程与测绘学院, 陕西 西安 710054,西安中交公路岩土工程有限责任公司, 陕西 西安 710054,长安大学地质工程与测绘学院, 陕西 西安 710054 |
| |
| 基金项目： | 国家重点研发计划（2018YFC1505404）；国家自然科学基金项目（41172257）；中央高校基本科研业务费资助项目（310826171016） |
| |
| 摘 要： | 为了研究在地铁列车振动荷载情况下盾构隧道-地裂缝-围岩相互耦合作用下的场地灾害效应,从西安地裂缝地质环境和西安地铁2号线的实际工程背景出发,采用相似理论设计了相似比例尺为1∶5的物理模型试验,对盾构隧道、围岩材料、地裂缝等进行了合理设计。基于偏心块的振动原理,课题组自主研发了列车激振器来模拟地铁列车荷载,激振方式采用移动荷载激振方式,分析在不同列车车速和激振频率下地裂缝两侧土体的加速度变化情况,以此来研究地铁隧道-地裂缝-围岩系统在地铁振动荷载作用下的动力响应规律。结果表明,列车振动向下传播时振动衰减的幅度要小于向上传播衰减的幅度,由此为实际工程中减少地铁振动灾害效应技术的发展提供了理论支撑。
|
| 关 键 词： | 地裂缝 灾害效应 模型试验 动力响应 地铁 |
| 收稿时间： | 2018/1/11 0:00:00 |
Model Teston Dynamic Interaction among Ground Fissure,Tunnel, and Surrounding Rock |
| |
| YANG Longwei,YANG Mi,MEN Yuming,WANG Peng and LI Jian.Model Teston Dynamic Interaction among Ground Fissure,Tunnel, and Surrounding Rock[J].Northwestern Seismological Journal,2019,41(3):710-716. |
| |
| Authors: | YANG Longwei YANG Mi MEN Yuming WANG Peng and LI Jian |
| |
| Institution: | School of Geological Engineering and Geomatics, Chang''an University, Xi''an 710054, Shaanxi, China,Shaanxi Provincial Expressway Construction Group Company, Xi''an 710065, Shaanxi, China,School of Geological Engineering and Geomatics, Chang''an University, Xi''an 710054, Shaanxi, China,Xi''an China Highway Geotechnical Engineering Co., Ltd., Xi''an 710054, Shaanxi, China and School of Geological Engineering and Geomatics, Chang''an University, Xi''an 710054, Shaanxi, China |
| |
| Abstract: | To study the site hazard effect induced by the dynamic interaction among ground fissure, metro tunnel, and surrounding rock under the load of subway vibration, the geological environment of the ground fissures in Xi''an and the actual engineering design of Xi''an Metro Line 2 were selected as the background. A physical model test with a similar scale of 1:5 was designed using the similarity theory. Then the shield tunnel, surrounding rock material, and ground fissures were reasonably designed. A vibrator was used in the model test to simulate the load of metro train vibration, and fixed-point excitation and moving-point excitation were both applied to analyze the dynamic response among ground fissure, metro tunnel, and surrounding rock under subway vibration load. The analysis results can provide a scientific basis for the safe running of subways. |
| |
| Keywords: | ground fissure hazard effect model test dynamic response subway |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《西北地震学报》浏览原始摘要信息 |
| 点击此处可从《西北地震学报》下载免费的PDF全文 |
|
