Evesque P, Noblet S, Rault G
Laboratoire MSSM, Ecole Centrale Paris, F-92295 Châtenay-Malabry, France.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 1999 Jun;59(6):R6259-62. doi: 10.1103/physreve.59.r6259.
It is found experimentally that vertical-stress field in a conic pile depends on gravity level, building process, and loading story. For instance, a conic pile with inclined strata does exhibit a minimum of stress in the center, whereas conic pile with horizontal strata does not; both piles exhibit an arching effect, which increases with gravity. This questions the assumptions of radius stress field scaling. Amplitude of the stress dip is found to be 10%, which is much smaller than what was found in previous experiments.
实验发现，锥形桩中的垂直应力场取决于重力水平、施工过程和加载层数。例如，具有倾斜地层的锥形桩在中心确实会出现应力最小值，而具有水平地层的锥形桩则不会；两种桩都表现出拱效应，且该效应会随着重力增加。这对半径应力场缩放的假设提出了质疑。应力下降幅度为10%，远小于先前实验中的发现。
