At the beginning of loading, the majorprincipalstress centralize in a triangle area under the lap.
刚开始加载时,最大应力集中在搭接面以下的一个三角形区域内。
2
The direction of the majorprincipalstress in a region remains the same from tens of meters to 4000 meters below surface.
一个地区的主压应力方向在地下几十米至4000米大体是一致的。
3
The direct earth pressure should be calculated by analysis of minor principalstress arch while the indirect earth pressure by analysis of majorprincipalstress arch.