华侨大学学报（自然科学版）2011，Vol.32Issue(3)：326-331,6.
采用统一强度理论的锚喷支护围岩弹塑性统一解
Elastic-Plastic Unified Solution of Shotcrete-Anchorage Support Surrounding Rock Based on Unified Strength Theory
摘要
Abstract
Combining the mechanical mechanism of point anchored bolts and twin shear unified strength theory, rock stress field of surrounding, displacement field and analytical solution of plastic zone radius in circular tunnel are educed under the two-way stress in an infinite homogeneous medium, the influence of the parameter b value of strength theory on the features of stress and displacement distribution in the elastic and plastic zone are analyzed. Furthermore, the trend of anchor support influence on radius of plastic zone is analyzed. It's shown that the tunnel axial stress and the parameter b of strength theory affect tunnel surrounding rock stress field, displacement field, plastic zone radius and support reaction etc; the stress value of surrounding rock drops in the outside end of anchorage zone, also surrounding rock stress outside of anchorage in the plastic zone drops more than that in the elastic zone; with increasing the anchorage area radius, the plastic zone radius of tunnel surrounding rock increases initially, then decreases, finally almost doesn′t change.关键词
弹塑性/锚喷支护/统一强度理论/围岩Key words
plastic/ shotcrete-anchorage support/ unified strength theory/ surrounding rock分类
交通工程引用本文复制引用
郑强,林从谋,孟凡兵..采用统一强度理论的锚喷支护围岩弹塑性统一解[J].华侨大学学报（自然科学版）,2011,32(3):326-331,6.基金项目
福建省科技计划重点项目(2007H0055) （2007H0055）
福建省自然科学基金资助项目(2006J0445) （2006J0445）
