摘要
对双排管竖井冻结所形成的冻结壁等效成材料性质沿厚度呈梯形分布的功能梯度材料(FGM)无限长厚壁圆筒,通过求解均布荷载下该类厚壁圆筒的弹性解析解,并利用摩尔-库伦屈服准则求解其弹塑性解析解。根据解析解,进行双排管竖井冻结壁的应力场分析,将分析结果与均质冻结壁模型进行对比,提出对设计施工具有参考价值的建议。
The frozen soil wall in double-row-pipe shaft freezing can be equivalent to an infinite-long functionally graded material （FGM） thick cylinder with properties that are trapezoid-shaped distributed through the thickness. By analytically solving this kind of thick cylinder under a uniform load, the elastic analytical solution was obtained. Meanwhile, the plastic analytical solution was derived by employing Mohr-Coulomb yield criterion. Based on the analytical solutions mentioned, the stress field of frozen soil wall in double-row-pipe shaft freezing was analyzed. The result was further compared with that of a homogeneous model to reflect some mechanical characteristics of frozen wall with FGM property. Finally, some suggestions regarding to the design and construction of frozen soil wall were proposed.
出处
《工程力学》
EI
CSCD
北大核心
2014年第1期145-153,共9页
Engineering Mechanics
基金
国家自然科学基金项目(50578120
51178336)
关键词
功能梯度材料(FGM)
梯形分布
厚壁圆筒
弹塑性解析解
摩尔-库伦准则
双排管冻结
竖井冻结壁
functionally graded material （FGM）
trapezoid-shaped distribution
thick cylinder
elastic and plastic analytical solutions
Mohr-Coulomb yield criterion
double-row-pipe freezing
frozen soil wall in shaft freezing
