以液压垫法检测二衬应力与设计值对比分析
Test of Stress State of Tunnel Secondary Lining by Hydraulic Cushion Method and Comparisons with Design Values
高翊宸 1周洋 2凤跃森1
作者信息
- 1. 中交第一公路勘察设计研究院有限公司 西安市 710068
- 2. 中交二公局第六工程有限公司 西安市 710075
- 折叠
摘要
在黑山南北高速公路项目的施工过程中,隧道初支多点位移计与锚杆轴力计存在局部缺失、数量不足或安装不及时等问题,业主接收委员会在验收隧道二衬时要求进行试验与论证分析,证明隧道的安全稳定以及受力情况在设计假设的包络范围内.为满足业主要求,承包商聘请第三方机构采用液压平板千斤顶进行二衬应力试验,并将所读取应力与设计值进行了对比分析,消除了业主的疑虑.对该试验的过程进行描述并对结果进行了分析,此类以检测试验论证解决技术争议的方法对我国在欧洲参与"一带一路"倡议的建设者们有重要参考价值.
Abstract
During construction of the Bar-Boljare Highway Project in Montenegro,the multiple extensometersand the rock bolts for axial force monitoring are either not installed,or installed with insufficient quantity or not timely installed.The Technical Acceptance Committee of the Employer required to obtain actual stress testing results to analyze and verify the safety and stability of the tunnels,as well as to proof that the Main Design calculation envelop covers the actual stress state.In order to satisfy the Employer's requirement,the Contractor has invited a qualified third party institute to test the stress state of the tunnel secondary lining by using hydraulic cushion method on the flat-jack,and compare the obtained results with the Main Design values,which eliminates the doubts from the Employer.In the paper,the testing procedure is described and the results are analyzed.Such method of solving technical dispute by testing based verification could provide valuable reference for Chinese companies when engaging in the"Belt and Road"projects construction in Europe.
关键词
隧道工程/隧道衬砌/二衬应力试验/安全稳定Key words
tunnel engineering/tunnel lining/stress in tunnel secondary lining test/safety and stability引用本文复制引用
出版年
2024
NETL
NSTL
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