大面积土体堆载地基变形一般规律分析

Disciplines of foundation deformation under large area earth loading

大面积土体堆载是典型的一维固结问题,但是大面积堆载的地基土变形规律与常规小范围堆载有显著差别。本文通过收集整理多项软土地区大面积土体堆载工程实测资料,结合工程地质情况,总结了大面积堆载的一般规律。从这些工程的实测结果看,大面积堆载与小范围堆载相比,其影响范围大、固结时间长、孔隙水压力消散缓慢、变形量大,这些规律对工程设计具有一定参考价值和指导意义。

Large area earth loading was a typical one-dimensional consolidation problem, yet significant differences existed for foundation deformation between large area loading and common small scale loading. In this paper, monitoring data from typical large area loading history cases in soft soil were collected with geological conditions simultaneously, and common disciplines of large area loading were summed up. It can be seen from these projects that compared to small scale loading, large area loading had wider influencing range, longer consolidation time, longer pore pressure dissipation time and larger deformation, which had certain value for references and guidance for similar projects.