深埋无中导洞连拱隧道过程荷载计算方法研究

张建; 孙纬宇; 严松宏; 王永刚; 王文

doi:10.11779/CJGE20240622

深埋无中导洞连拱隧道过程荷载计算方法研究 English Version

1.
兰州交通大学, 土木工程学院, 兰州, 730070, 中国;2
1.
兰州交通大学, 土木工程学院, 兰州, 730070, 中国;3
2.
甘肃省交通规划勘察设计院股份有限公司, 兰州, 730030, 中国

基金项目: 国家自然科学基金项目(52208392);国家自然科学基金项目(52068044);国家自然科学基金项目(U2468217);中国博士后科学基金项目(2021M693843);甘肃省交通运输厅科技项目(2024-48);

计量
- 文章访问数: 0
- HTML全文浏览量: 0
- PDF下载量: 0
出版历程
- 收稿日期: 2024-06-27
- 网络出版日期: 2024-12-16

Calculation method of calculating rock pressure of deeply buried double-arch tunnel without middle drift

摘要

摘要: 无中导洞连拱隧道规避了传统连拱隧道施工工序繁杂、应力转换频繁等缺点，近年来在我国取得了越来越广泛的应用，而该新型结构的围岩压力计算方法并未有统一的标准可循。基于普氏理论及过程设计方法，考虑先行洞支护结构对后行洞塌落拱高度的抑制作用及后行洞开挖对先行洞围岩压力的加剧影响，建立了深埋无中导洞连拱隧道过程荷载计算方法，最后通过与典型工程现场监控量测结果及参考文献计算方法比对分析。研究结果表明，通过应力分布组合的方式确定先行洞支护结构支撑能力能够量化对后行洞围岩压力的抑制作用；定量分析影响围岩压力的四个主要因素影响程度（围岩级别S（32.66%）、先行洞开挖宽度W1（28.02%）、后行洞开挖宽度W2（22.34%）、先行洞支护强度G（16.99%）），使得后行洞开挖对先行洞围岩压力影响系数的取值更加合理。通过对深埋无中导洞连拱隧道过程荷载计算方法的求解，能够为无中导洞连拱隧道支护结构提供较为科学合理的设计依据。
- 连拱隧道 /
- 普氏理论 /
- 过程荷载 /
- 最大隶属度原则
Abstract: The multi arch tunnel without a central guide tunnel avoids the drawbacks of traditional multi arch tunnel construction processes such as complexity and frequent stress conversion. In recent years, it has been widely used in China, but there is no unified standard for calculating the surrounding rock pressure of this new structure. Based on the Prussian theory and process design method, considering the inhibitory effect of the support structure of the advance tunnel on the collapse arch height of the subsequent tunnel and the intensifying effect of the excavation of the subsequent tunnel on the surrounding rock pressure of the advance tunnel, a process load calculation method for deep buried multi arch tunnels without a central guide tunnel was established. Finally, the rationality of the process load calculation method was verified by comparing and analyzing with the monitoring and measurement results of typical engineering sites and reference calculation methods. The research results indicate that determining the support capacity of the advance tunnel support structure through the combination of stress distribution can quantify the inhibitory effect on the surrounding rock pressure of the subsequent tunnel; Quantitative analysis of the four main factors that affect the degree of influence on surrounding rock pressure (rock level S (32.66%), excavation width W1 (28.02%) of the front tunnel ,excavation width W2 (22.34%) of the rear tunnel, and support strength G (16.99%) of the front tunnel) makes the value of the coefficient of influence of rear tunnel excavation on the surrounding rock pressure of the front tunnel more reasonable. By solving the process load calculation method for deep buried multi arch tunnels without central guide tunnels, a more scientific and reasonable design basis can be provided for the support structure of multi arch tunnels without central guide tunnels.
- multi-arch tunnel /
- Protodyakonov's theory /
- process load /
- principle of maximum affiliation

HTML全文

参考文献(0)

施引文献(24)

期刊类型引用(10)

1.	朱才辉，周小松，乔建伟，李鑫磊. 孔内深层强夯法处理湿陷性黄土地基试验研究. 自然灾害学报. 2025(01): 217-229 . 百度学术
2.	张子萱，曹宝花，韩泽敏，许江波，程芳卉，陈绍华，侯鑫敏，詹皓辰. PFC3D颗粒流模拟纳米黏土改良黄土三轴试验. 岩土工程技术. 2024(03): 365-373 . 百度学术
3.	杨智慧，李珊花. 基于PFC~(2D)的水泥土单轴压缩试验及细观数值模拟. 中外公路. 2023(01): 189-193 . 百度学术
4.	刘欢，张庆文，连晓兰，朱孟龙，聂广影. 非饱和绢云母片岩残积土一维压缩变形规律. 科学技术与工程. 2021(03): 1131-1137 . 百度学术
5.	李涛，蒋明镜，李立青. 非饱和重塑黄土应变控制等应力比试验三维离散元分析. 水利与建筑工程学报. 2021(02): 36-41 . 百度学术
6.	蒋明镜，王优群，卢国文，张鹏. 非饱和重塑与结构性黄土平面应变试验三维离散元模拟. 水利与建筑工程学报. 2021(02): 1-5+18 . 百度学术
7.	李瑶，伏映鹏，廖红建，吕龙龙，董琪. 考虑吸力作用的非饱和土离散元模型及细观参数影响分析. 岩土工程学报. 2021(S1): 246-250 . 本站查看
8.	米文静，张爱军，刘争宏，刘宏泰. 黄土自重湿陷变形的多地层离心模型试验方法. 岩土工程学报. 2020(04): 678-687 . 本站查看
9.	蒋明镜. 现代土力学研究的新视野——宏微观土力学. 岩土工程学报. 2019(02): 195-254 . 本站查看
10.	蒋明镜，张浩泽，李涛，张鹏. 非饱和重塑与结构性黄土等向压缩试验离散元分析. 岩土工程学报. 2019(S2): 121-124 . 本站查看