强夯加固填土地基静载荷试验的尺寸效应研究

The Research on Size Effect of Static Load Test of Dynamic Compacting Thick Filled Earth Foundation

对强夯加固填土厚度为10m的碎石土进行现场静载荷试验,在压板宽度选择时,考虑了相关规范所要求的最小值和承压板应力所能达到的影响深度的因素,选用宽度为1.41,3.00,3.46,4.47m 4种规格正方形大面积压板进行现场静载荷试验,研究压板宽度对地基沉降、相对沉降比、土性参数、地基承载力的影响,得到了上述研究对象随着压板宽度的变化规律,并且给出了强夯填土地基静载荷试验压板宽度选取的范围。

Choosing the width of bearing plate to do field static load test with gravelly soil with thickness of 10 m of filled earth reinforced by dynamic compaction,this paper considered both the minimum value required by the relevant standard and the depth-influencing factors produced by bearing plates after being stressed and then chose 4 norms of large square bearing plates with the width of 1. 41 m,3. 00 m,3. 46 m and 4. 47 m to do the field static load test to study the effects of width of bearing plates to foundation settlement,relative settlement proportion,soil parameters,ultimate bearing capacity of ground and bearing capacity of ground. Summing up the results helps gain the rule of the objects mentioned above varying with the width of bearing plates and shows the width choosing range of bearing plates to do static load test of dynamic compacting the filled earth foundation.