摘要
为了解决在入射平面SV波和Rayleigh波作用下地下圆形衬砌洞室的动应力集中问题,利用文献[5]的级数解,分析了衬砌刚度、入射波长、入射角度诸因素对动应力集中系数(DSCF)的影响。数值结果表明:(1)衬砌刚度对DSCF有重要影响,柔性衬砌情况DSCF最小,刚性衬砌情况的最大;环向与轴向DSCF最大可分别达到32.31与16.12;(2)入射频率和入射角度对DSCF也有很大影响。
The series solution of an underground cylindrical lined cavern subject to incident plane SV waves and Rayleigh waves[5] can be used to quantitatively analyze the effect of liner stiffness,incident wavelength and incident angle on dynamic stress concentration.The numerical results show that:(1) the rigidity of line has significant effect on dynamic stress concentration factor(DSCF).DSCF is lowest for a cavern with flexible lining,and is highest for a cavern with rigid lining.The dynamic circumferential and axial stress concentration factor can be 32.31 and 16.12 respectively;(2) the frequency and the angles of the incident waves also play an important role in the dynamic stress concentration factor.
出处
《辽宁工程技术大学学报(自然科学版)》
CAS
北大核心
2011年第1期64-67,共4页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(50378063)
辽宁省教育厅高等学校科研计划基金资助项目(2008058)