摘要
在平面应变条件下,分别推导了松冈元-中井照夫破坏准则、Lade-Duncan破坏准则和俞茂宏双剪统一强度准则的表达形式,并将平面应变条件下和常规三轴压缩条件下的土体抗剪强度指标联系起来.在此基础上,得到了考虑中间主应力影响的主动土压力计算公式.计算表明,只要填土的内摩擦角大于0,考虑中间主应力影响的主动土压力值都小于Rankine主动土压力值,但不同的破坏准则,其计算结果相差较大.
The expressions of Matsuoka- Nakai, Lade- Duncan and Yu＇s twin - shear failure criterion under the plane strain condition are respectively obtained, and the shear strength parameters of soil under the plane strain condition are connected with those under the routine tfiaxial mula of active earth pressure considering the effect of the proposed compression condition in this paper. Accordingly, the forintermediate principal stress under plane strain condition is It is shown that, for the filling soil with the internal friction angle greater than 0, the active earth pressure acting on retaining wall considering the effect of the intermediate principal stress is less than that by Rankine＇ s theory, but the difference among the calculated results based on these failure criterions is nonnegligible.
出处
《郑州大学学报（工学版）》
CAS
2006年第1期27-30,共4页
Journal of Zhengzhou University（Engineering Science）
关键词
挡土墙
破坏准则
主动土压力
平面应变
中间主应力
retaining wall
failure criterion
active earth pressure
plane strain
intermediate principal stress
