摘要
针对采用多元线性回归法分析初始地应力场进行工况组合时仅有选取足够大的计算范围方能避免计算与实测的结果偏差过大,利用多元线性回归拟合精度高的优点,在较小区域范围内通过合成初始应力场并施加使模型内部应力保持平衡的边界条件,采用ABAQUS软件进行地应力平衡分析计算。结果表明,该方法基本消除了边界条件对应力场的影响,可获得拟合精度高、直接应用于工程分析的初始应力场,可供借鉴。
Generally large enough calculation range is needed to reduce differences between simulation and test results during combining load cases in initial geostress field analysis with multivariate linear regression method.In smaller simulation area,initial stress field is combined and boundary condition is applied to balance the internal stress of the model.And then the balance analysis of geostress is conducted with ABAQUS.The results show that the influence of boundary condition on stress field is eliminated an...
出处
《水电能源科学》
北大核心
2010年第6期39-42,共4页
Water Resources and Power
基金
国家自然科学基金资助项目(50809051)
