新型管片接头盾构隧道衬砌结构整环足尺试验研究
赵明应1,2何应道1,2吴鑫林1,2张肇一3白海文3柳献3
Full-Scale Full-Ring Experimental Study on Shield Tunnel Lining Structure with Innovative Segment Joints
ZHAO Mingying1,2HE Yingdao1,2WU Xinlin1,2ZHANG Zhaoyi3BAI Haiwen3LIU Xian3
-
作者信息:1.中铁第四勘察设计院集团有限公司, 430063, 武汉
2.水下隧道技术国家地方联合工程研究中心, 430063, 武汉
3.同济大学土木工程学院, 200092, 上海
-
Affiliation:1.China Railway Siyuan Survey and Design Group Co., Ltd., 430063, Wuhan, China
2.National and Local Joint Engineering Research Center for Underwater Tunnel Technology, 430063, Wuhan, China
3.School of Civil Engineering, Tongji University, 200092, Shanghai, China
-
关键词:
-
Key words:
-
DOI:10.16037/j.1007-869x.2025.05.024
-
中图分类号/CLCN:U455.43
-
栏目/Col:土建工程
摘要:
［目的］目前，我国的盾构隧道结构存在管片局部削弱、接缝变形大、施工效率低及不利于自动化拼装等问题，因此，有必要对采用新型管片接头的盾构隧道结构力学性能进行研究。［方法］介绍了试验概况、加载方案及测试系统；基于新型管片接头的力学性能，对盾构隧道衬砌结构力学性能进行分析，并开展新型管片接头盾构隧道衬砌结构整环足尺试验。［结果及结论］采用新型管片接头的盾构隧道衬砌结构在各工况下的收敛变形、接缝变形量及连接件受力均满足设计要求；管片结构整体变形呈现左右不对称的特点，管片结构右腰的变形量和内力均大于左腰；管片结构在弹性阶段的刚度为2.21×10^4 N/mm；由于正弯矩接头连接件的受力相较于负弯矩接头更加不利，因此在施工运营过程中，应重点关注管片结构顶底位置的接缝受力情况。
Abstracts:
［Objective］Presently, shield tunnel structures in China face challenges including local segment weakening, significant joint deformation, low construction efficiency and hindered automated assembly. Therefore, it is necessary to study the mechanical properties of shield tunnel structures with innovative segment joints. ［Method］The test overview, loading scheme and test system are introduced. Based on the mechanical properties of innovative segment joints, an analysis on the mechanical properties of shield tunnel lining structures is conducted, and a full-scale full-ring test on such structures is carried out. ［Result & Conclusion］The convergence deformation, joint deformation and connector stress of the shield tunnel lining structure with innovative segment joints under various working conditions all meet design requirements; the overall segment structure deformation shows asymmetric characteristics, with both the segment structure deformation and internal force of the right waist greater than those of the left waist; the segment structure stiffness in the elastic stage is 2.21×10^4N/mm. Since the stress on the connector of positive moment joints is more unfavorable than that on negative moment joints, special attention should be paid to the stress of joints at the top and bottom of the segment structure during construction and operation process.
- 上一篇: 地震列车荷载耦合作用下桩网复合路基动力响应
- 下一篇: 考虑施工因素的盾构下穿对既有隧道沉降影响
过刊浏览
资料下载
友情链接