摘要
依托吉林省鹤大高速公路回头沟隧道工程,运用有限元数值模拟,从锚杆长度、环向间距、喷混凝土厚度等方面分析隧道初期支护结构参数对围岩稳定性的影响规律。在对称和非对称设计时,综合考虑锚杆轴力、洞周位移以及衬砌的结构安全系数等方面对回头沟隧道浅埋偏压段Ⅴ级围岩的支护结构给出优化设计建议。
Based on the project of Huitougou Tunnel on Hegang--Dalian Highway in Jilin Province, how the tunnel＇s primary supporting parameters affect the stability of surrounding rock, was analyzed by finite element numerical simulation from the bolt length, circumferential spacing and shotcrete thickness. Then, under symmetric and asymmetric design, the paper took the axial force of bolt, the displacement along the hole and the structural safety factor of tunnel lining into consideration, then gave the advise on the supporting structure optimization of V class surrounding rock in the shallow bias section of the Tunnel.
作者
李昊
佴磊
徐燕
罗贺文
阮庭环
LI Hao NIE Lei XU Yan LUO Hewen NGUYEN DINH HOAN(College of Construction Engineering, Jilin University, Changchun 130026, China)
出处
《路基工程》
2017年第1期73-77,共5页
Subgrade Engineering
基金
国家自然科学基金青年基金(41502270)
吉林省交通厅科技项目(2014-4-1-10-1)
关键词
浅埋偏压
隧道工程
初期支护
数值模拟
优化设计
稳定性
shallow-buried tunnel under unsymmetrical pressure
tunnel engineering
primary supporting
numerical simulation
optimized design
stability
