| 超浅埋偏压小净距隧道的施工力学行为分析 |
| |
| 引用本文： | 李华,彭文波.超浅埋偏压小净距隧道的施工力学行为分析[J].路基工程,2016,0(3):213-217. |
| |
| 作者姓名： | 李华 彭文波 |
| |
| 作者单位： | 中交第二公路勘察设计研究院有限公司, 武汉 430056 |
| |
| 摘 要： | 浅埋偏压隧道是山岭隧道中常见的一种隧道类型,隧道受偏压影响衬砌结构受力复杂,山坡岩体稳定性差,施工难度极大。以广乐高速大源一号隧道为工程背景,针对双洞并行隧道复杂的受力状态,采用有限元方法对超浅埋偏压小净距隧道进行了考虑施工顺序的数值模拟,对隧道衬砌结构的受力及变形进行了分析,对围岩的加固处理方式对衬砌结构造成的影响进行了计算分析。结果表明:对浅埋偏压小净距隧道,先施工埋深较浅一侧的洞室可使得衬砌结构所受到的内力较小;对大源一号隧道采取灌浆等措施可有效减小衬砌结构所受到的内力。
|
| 关 键 词： | 浅埋偏压隧道 施工顺序 工程措施 有限元模拟 衬砌结构 |
| 收稿时间： | 2019-11-09 |
Analysis of Construction Mechanical Behavior of Ultra Shallow Buried Bias Small-distance Tunnel |
| |
| Abstract: | Shallow buried bias tunnel is a common type of tunnel among mountain tunnels; the construction of the tunnel is very difficult for the complicated stress distribution in tunnel lining and rocks. Under the background of Dayuan tunnel 1, aiming at the complicated stress states of double-hole parallel tunnel, the finite element method is adopted to perform numerical study of tunnel lining for shallow-buried bias tunnel in order to analyze the stress and deformation of lining structure of tunnel and the influence of surrounding rock reinforcement treatment on the lining structure. The results of the study show that the stress of the tunnel lining will be smaller when the tunnel which is buried shallow is constructed firstly for the shallow-buried bias tunnel. The engineering measures for Dayuan tunnel 1 can reduce the stress of the lining structure effectively. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《路基工程》浏览原始摘要信息 |
|
点击此处可从《路基工程》下载全文 |
|
