摘要
采用千分表对一特大断面黄土公路隧道初期支护中的钢拱架变形进行了现场测试,推算了钢拱架中的应力,同时对收敛量测结果进行了回归分析。采用二维弹塑性有限元法,分析了该隧道各个施工阶段以及建成后围岩和衬砌的受力状态,对支护结构进行了检算,建议了隧道的支护参数。
The displacement of the steel centering in the preliminary lining of the enormus crosssection of a tunnel in loess is measured with a dial gauge in situ and the stress of the steel centering is calculated. Meanwhile,a regressive analysis is made on the convergence measurement of the tunnel. The state of stress of surrounding rock and tunnel lining under different comstruction stages of the tunnel are analyzed with the two-dimensional elasto-plastic finite element method, the runnel lining is examined and the designing parameters of the tunnel are suggested.
出处
《公路》
北大核心
2005年第8期180-183,共4页
Highway
基金
兰州交通大学"青蓝"人才工程基金资助计划资助
甘肃省科技攻关计划项目(GS993-B52-047)
关键词
黄土隧道
钢拱架变形量测
收敛量测
tunnel in loess
measurement of displacement of steel centering
convergence measurenent
