摘要
采用统一强度理论,考虑中间主应力的影响,根据不同的应力状态,正确选择第一主应力,推导了深埋圆形隧洞围岩塑性区范围统一解,并给出了公式的适用条件。通过算例说明,考虑第一主应力的变化是正确、必要的。
With unified strength theory, considering the influence of central main stress, this paper correctly chooses the major principal stress according to different stress states to deduce the unified solution of plastic range of wall rocks in deeply-buried circular tunnel calculation examples, it is correct and necessary to and give the applicable conditions of the formula. Through consider the change of the major principal stress.
出处
《路基工程》
2010年第1期72-74,共3页
Subgrade Engineering
关键词
隧道工程
统一强度理论
芬纳公式
塑性区范围
tunnel engineering
unified strength theory
Fenner Formula
plastic range
