摘要
分析了楔形体与开挖坡体模型之间的关系,阐明可以用平面应变条件下的楔形体理论分析开挖坡体的应力场,给出了确定边坡开挖应力场的弹性理论近似解析方法,指出在计算坡体每一步开挖后的应力场的过程中,主要需通过分析上一步开挖后的坡体应力场、本步开挖卸荷量来实现,由此在坡体自上而下分步开挖过程中每一步开挖施工完成之后相应的应力场都可以计算出来。最后以具体算例较为详细地说明了解析计算过程。
The relationship between wedge body and the model of cutting slope is analyzed to expound the possibility of applying wedge body theory to analyze the stress field of cutting slope according to the elastic plane-strain theory. On this basis, the analytical method for calculating stress field of homogeneous and elastic slope by means of elastic theory is proposed. The calculation of stress field for each step of cutting is realized by analyzing the stress field for previous step of cutting and calculating the off-load amount due to current step of cutting. By using this method the corresponding stress field for each step of cutting can be calculated. An example is given for demonstration.
出处
《水利学报》
EI
CSCD
北大核心
2005年第1期16-21,共6页
Journal of Hydraulic Engineering
关键词
边坡
应力场
弹性理论
楔形体
slope
stress field
elastic theory
wedge body
