|
|||||
|
|
| 城市地铁隧道对结构物上部桩基的影响 | |
| 引用本文： | 朱逢斌,杨平,佘才高.城市地铁隧道对结构物上部桩基的影响[J].南京林业大学学报(自然科学版),2009,33(6). |
| 作者姓名： | 朱逢斌 杨平 佘才高 |
| 作者单位： | 1. 苏州科技学院土木工程学院,江苏,苏州,215011 2. 南京林业大学土木工程学院,江苏,南京,210037 3. 南京地铁有限责任公司,江苏,南京,210000 |
| 基金项目： | 江苏省"青蓝工程"中青年学术带头人培养计划 |
| 摘 要： | 通过三维弹塑性有限元模型的建立，探讨软土地区盾构隧道开挖对地表沉降及上部桩基工作性状的影响规律。结果表明：地表沉降随盾构隧道开挖深度的增大而减小，而发生地表沉降范围增大；当桩体位于隧道拱顶正上方时，桩端与隧道拱顶间的最小安全距离为0.5d(d为隧道直径)；盾构隧道开挖在其侧上方引起的影响区为距离隧道中心线1d的范围。 |
| 关 键 词： | 地铁隧道 上部桩基 水平位移 弯矩 沉降 轴力 |
Effect of metro tunneling traversing on super-pile |
|
| ZHU Feng-bin,YANG Ping,SHE Cai-gao.Effect of metro tunneling traversing on super-pile[J].Journal of Nanjing Forestry University(Natural Sciences ),2009,33(6). | |
| Authors: | ZHU Feng-bin YANG Ping SHE Cai-gao |
| Institution: | 1.College of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China; 2.College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China; 3.Nanjing Metro Corporation Limited, Nanjing 210000, China |
| Abstract: | A 3D elasto plastic finite element model was established, and a detailed discussion was made on the influence caused by tunneling to ground settlement and super-pile. The results showed that the ground settlement which occurs in larger scope would reduce with the increasing of shield tunnel excavation depth. If the pile existed just at the upside of shield tunnel crown, the minimum safe distance between pile toe and shield tunnel crown would be half tunnel diameter. The lateral up influenced zone due to tunneling was one tunnel diameter from tunnel centerline. |
| Keywords: | metro tunnel super-pile horizontal displacement bending moment settlement axial force |
| 本文献已被 万方数据 等数据库收录！ | |
| 点击此处可从《南京林业大学学报(自然科学版)》浏览原始摘要信息 | |
| 点击此处可从《南京林业大学学报(自然科学版)》下载免费的PDF全文 | |