限阻耗能型支护在高速公路软岩大变形隧道中的应用:以玉楚高速公路齐云隧道为例

罗江; 王刚; 白柱; 王玉洁; 仇文革; 朱旺; 朱麒

doi:10.3973/j.issn.2096-4498.2023.05.013

隧道建设 >

2023 , Vol. 43 >Issue 5: 856 - 864

DOI: https://doi.org/10.3973/j.issn.2096-4498.2023.05.013

施工技术

限阻耗能型支护在高速公路软岩大变形隧道中的应用:以玉楚高速公路齐云隧道为例

罗江 ,
王刚 ,
白柱 ,
王玉洁 ,
仇文革 ,
朱旺 ,
朱麒

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(1. 中铁一局集团第五工程有限公司，陕西宝鸡 721006； 2. 南京工业大学交通运输工程学院，江苏南京 210009； 3. 西南交通大学交通隧道工程教育部重点实验室，四川成都 610031； 4. 成都天佑智隧科技有限公司，四川成都 610031)

罗江(1987—)，男，四川西昌人，2011年毕业于西华大学，土木工程专业，本科，高级工程师，现从事公路工程施工技术与管理工作。Email： 410576180@qq.com。*通信作者：王刚， Email： swjtu_wg@163.com。

网络出版日期: 2023-06-20

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Application of SupportResistant Limiting Damper in Soft Rock Highway Tunnel with Large Deformation: a Case Study of Qiyun 

Tunnel of YuxiChuxiong Expressway

LUO Jiang ,
WANG Gang ,
BAI Zhu ,
WANG Yujie ,
QIU Wenge ,
ZHU Wang ,
ZHU Qi

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(1.The Fifth Engineering Co.,Ltd. of China Railway First Engineering Group,Baoji 721006,Shaanxi,China;2.College of Transportation Science & Engineering,Nanjing Tech University,Nanjing 210009,Jiangsu,China;3.Key Laboratory of Transportation Tunnel Engineering,Ministry of Education,Southwest Jiaotong University,Chengdu 610031,Sichuan,China;4.Chengdu Tianyou Tunnel Key Technology Co.,Ltd.,Chengdu 610031,Sichuan,China)

Online published: 2023-06-20

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摘要

为解决玉楚高速公路齐云隧道大变形问题，引入限阻耗能型支护设计理念，采用限阻耗能型支护方案进行研究。通过静压试验进行限阻耗能型支护元件的方案比选，对比分析直板型、弧板型、斜板型限阻器的压力-变形情况。试验结果表明，弧板型限阻器工作性能更佳，其恒阻值约为3 MPa，初始峰值小于C25混凝土抗压强度，且压缩变形具有导向性和可控性，满足设计需求。因而选用弧板型限阻器进行设计，并将优化后的结构应用于齐云隧道。根据限阻耗能型支护在大变形隧道的应用效果，得到以下结论： 1）支护结构受形变压力控制，除限阻器在设计行程内产生塑性变形以外，其余初期支护结构均在弹性范围内工作，增加了结构的安全性，围岩压力最大值仅为0.13 MPa，可以看出施作限阻器能够更有效地释放围岩压力； 2）在齐云隧道施工中，相较于常规支护方法出现的初期支护结构混凝土剥落、钢架压溃现象，限阻耗能型支护段落的限阻器产生了显著的变形，但支护结构状态整体较好，达到了治理大变形的功效； 3）限阻器不仅加工方式简单，且施工工艺与台阶法相适应，具有良好的可操作性和经济效益。

关键词： 高速公路隧道; 大变形; 能量释放; 限阻器; 初期支护优化

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罗江 , 王刚 , 白柱 , 王玉洁 , 仇文革 , 朱旺 , 朱麒 .

限阻耗能型支护在高速公路软岩大变形隧道中的应用:以玉楚高速公路齐云隧道为例

[J]. 隧道建设, 2023 , 43(5) : 856 -864 . DOI: 10.3973/j.issn.2096-4498.2023.05.013

Abstract

To address the large deformation issues of the Qiyun tunnel on the YuxiChuxiong highway, a design concept known as the supportresistant limiting damper(SRLD) is introduced and examined. Using static pressure testing, the schemes of the energyconsuming types of support elements and the pressuredeformation of the straight plate, arc plate, and inclined plate types of support elements are compared and analyzed. The results reveal that the arc plate SRLD has a constant resistance of approximately 3 MPa. Its initial peak value is less than the compressive strength of C25 concrete and compression deformation is controlled and oriented. Therefore, the arc plate type SRLD is selected and the optimized structure is applied into the Qiyun tunnel design. Based on SRLD performance in the large deformation tunnel, the following conclusions are drawn: (1) The support structure is controlled by deformation pressure. Except for the plastic deformation caused by SRLD during the design stroke, the remaining primary support structures operate within the elastic range, enhancing structural safety. The maximum pressure of the surrounding rock is only 0.13 MPa, indicating that SRLD can release this pressure effectively. (2) Concrete spalling and steel frame collapse are common in the primary support structures reinforced using conventional support methods, while the section supported by SRLD exhibits a good overall state because SRLD experiences only large deformations, indicating a good deformation control effect. (3) The processing method of the SRLD is simple and the construction technology is suitable for the bench method, which provides good operability and economic benefits.

Key words： highway tunnel; large deformation; energy release; supportresistant limiting damper; primary support optimization

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