CAJ | 학술논문

提出基于统一强度理论和非相关联流动法则，推导同时考虑中间主应力和约束损失两种因素作用下的围岩弹塑性应力？位移解析解。结合算例，分析中间主应力和约束损失对围岩特征曲线的影响规律。结果表明：考虑中间主应力的影响，能够充分发挥围岩的强度；考虑约束损失的影响，计算得到的围岩塑性区径向位移值减小，说明在利用围岩特征曲线进行支护设计时，同时考虑以上两种因素，能够取得较好的经济效益。
제출기우통일강도이론화비상관련류동법칙，추도동시고필중간주응력화약속손실량충인소작용하적위암탄소성응력？위이해석해。결합산례，분석중간주응력화약속손실대위암특정곡선적영향규률。결과표명：고필중간주응력적영향，능구충분발휘위암적강도；고필약속손실적영향，계산득도적위암소성구경향위이치감소，설명재이용위암특정곡선진행지호설계시，동시고필이상량충인소，능구취득교호적경제효익。
Based on the unified strength theory and a non?associated flow rule,an analytical solution for elastic?plastic of a deep circular rock tunnel is presented taking into consideration both effects of the intermediate principal stress and con-finement loss factor.In combination with a calculation example,the impacts of these two factors on the ground reaction curve from are studied.The results show:consideration of the impact of intermediate principal stress is conducive to de-velop the strength of the surrounding rock;considering the impact of the constraint loss,the radial displacement of sur-rounding rock decrease.Consequently,when two factors are considered,using the characteristic curve of surrounding rock for designation,benign economic benefit can be achieved.