大厚度湿陷性黄土场地地基处理合理深度的研究

he foundation reinforce depth of thickness of collapsible loess foundation less than the code for building constructing，based on this Engineering problem, this paper put forward that the single standard of the remnant collapse as a foundation reinforce depth are uneconomical, the stiffness of treated soil in some depth have capability of resist deformation caused by collapsible. Through the establishment of stress and strain relation of mathematical model of artificial foundation, the calculations analyzed with FLAC the relation and rule of the collapsible loess of artificial foundation in the site of shear damage of collapsible area and reinforce depth. The results showed that artificial foundation resist the capacity of deformation caused by collapsible is enhanced with the increasing depth, when reinforce depth at 12m above, the increasing resistance is little. In the remnant collapse is still higher than the code requirements. Selecting 12m as a minimum reasonable reinforce depth that is safe and economical.