摘要
当前我国水下盾构隧道正朝着断面大型化发展,随之带来的大埋深、高水压等问题对管片结构的安全性带来了极大挑战,高水压作用下管片结构的承载性能与破坏特征一直备受关注。本研究从狮子洋隧道和苏通GIL特高压电力管廊工程等两座大断面盾构隧道原型管片的高水压破坏加载试验现象出发,分析高水压条件下盾构隧道管片结构的破坏特征与规律,在此基础上提出管片结构承载性能评价指标,并结合试验结果给出了控制参数建议。
At present,the underwater shield tunnels in China are developing towards large-scale cross-sections,consequently,problems such as large buried depth and high waterpressure had brought great challenges to the safety of the segment lining.Accordingly,the load-bearing performance and failure characteristics of segment lining under high water pressure need to be investigated.In view of this,based on the experimental failure results of two prototype large-sectional segment linings used in the Shiziyang Tunnel and the Sutong GIL UHV Power Pipe Gallery Project,the failure characteristics of the large-section segment lining under high-water-pressure were clarified.In addition,the evaluation indexes for the load-bearing performance of the segment lining was proposed and the recommended control parameters based on the test results were given.
作者
封坤
何川
张力
郭文琦
FENG Kun;HE Chuan;ZHANG Li;GUO Wenqi(Key Laboratory of Transportation Tunnel Engineering,Ministry of Education,Southwest Jiaotong University,Chengdu 610031,Sichuan,China)
出处
《隧道与地下工程灾害防治》
2020年第3期95-106,共12页
Hazard Control in Tunnelling and Underground Engineering
基金
国家自然科学基金资助项目(52078430,51878569)
关键词
盾构隧道
原型试验
高水压
破坏特征
评价指标
shield tunnel
prototype test
high water pressure
failure characteristic
evaluation indexe
作者简介
封坤(1983—),男,陕西延川人,博士,副教授,主要研究方向为现代盾构隧道技术与结构设计理论.E-mail:windfeng813@163.com
