soil plasticity

Based on soil plasticity and upper-bound analysis theory, the earth pressure intensity formula distributing along the tunnel portal length, general earth pressure formula and earth pressure action point formula are derived.

详细推导了运用土体塑性极限分析理论中的上限解方法研究隧道洞门土压力沿隧道洞门墙高的分布土压力公式、总土压力公式及土压力作用点公式。

Through the laboratory experiments, a certain clay in Hangzhou is mixed with organic matter and the Atterberg limits test of the organic soil is carried on to study the relationship between organic matter ratio and liquid limits, plastic limits, and plasticity index.

本文通过室内试验，将有机质与杭州某工地的粘土配制成不同有机质含量的土，进行液塑限试验，讨论了有机质含量与土的液塑限、塑性指数之间的关系。