摘要
以伊犁河谷高烈度地震区隧道工程为依托,用FLAC^(3D)建立隧道洞口段模型,并对隧道洞口进行内力分析,得出洞口段的隧道结构内力和隧道口进出交界面有明显突变,隧道衬砌及锚杆内力与围岩等级密切相关,锚杆与衬砌连接处的锚杆内力稍微大于锚杆中部的内力。综上所述,为了安全考虑,隧道洞口在抗震设计时进出交界处应加固,对隧道衬砌及锚杆在抗震设计也要考虑防范措施。
Relying on the tunnel projects in the high-intensity seismic area of the Yili River Valley,a model of the tunnel portal section was established using FLAC^(3D),and an internal force analysis of the tunnel portal was carried out.The results show that there are obvious mutations in the internal forces of the tunnel structure in the portal section and at the entrance-exit interface of the tunnel portal.The internal forces of the tunnel lining and bolts are closely related to the grade of the surrounding rock.The internal forces of the bolts at the connection with the lining are slightly greater than those in the middle of the bolts.In conclusion,for safety reasons,the entrance-exit junction of the tunnel portal should be strengthened in seismic design,and preventive measures should also be considered for the tunnel lining and bolts in seismic design.
作者
杜文涛
夏家鹏
张佳程
李彦红
彭华瑞
潘晓飞
刘康宁
Du Wentao;Xia Jiapeng;Zhang Jiacheng;Li Yanhong;Peng Huarui;Pan Xiaofei;Liu Kangning(Xinjiang Transportation Planning Survey and Design Research Institute Co.,Ltd.,Urumqi,China;School of Architectural Engineering,Xinjiang University,Urumqi,China;li Transportation Investment Group Co.Ltd.,Yining,China;li Guangtong Traffic Construction Project Management Co.,Ltd.,Yining,China;College of Transportation and Logistics Engineering,Xinjiang Agricultural University,Urumqi,China)
出处
《科学技术创新》
2025年第20期184-187,共4页
Scientific and Technological Innovation
基金
伊犁河谷生态敏感区低碳耐久高速公路智能化建设关键技术研究(2022-ZD-018)。
