中文摘要：

本文依托实际工程,通过在强夯法处理的沙漠地基上所进行的不同尺寸承压板的平板载荷试验,开展了该类场地地基承载力的尺寸效应研究,发现了此类场地地基承载力特征值随承压板尺寸变化而变化的基本规律。依据实验研究成果,提出了平板载荷试验承压板大小的选择原则,并给出了采用不同宽度承压板进行载荷试验时地基承载力特征值的修正系数。

英文摘要：

Through plate loading tests with different size plates in desert foundation treated by dynamic compaction in Mongolia the size effect of loading test is studied based on engineering practice.It is found that the characteristic values of the subgrade bearing capacity vary with the width of the plates.According to the testing results,the principle how to select the width of the plate in PLT is presented,and the modification coefficients for the characteristic values of the subgrade bearing capacity are given when the plates with different width are used.