灰土桩复合地基治理湿陷性黄土施工

Lime-soil pile composite foundation treats the constructionof collapsible loess

河北张家口地区湿陷性黄土分布广泛,湿陷等级复杂,通过勘察、施工研究分析,在天然状态下地层结构稳定,遇有暴雨含水量达到饱和状态在上部压力的作用下,地基土将会产生不同程度的下沉。通过挤密灰土桩夯实处理效果明显。

Collapsible loess is widely distributed in Zhangjiakou, Hebei province, and its collapsibility grade is complex. Through reconnaissance, construction and research, the collapsible loess layer is stable under nature condition, but the foundation soil will sink in different degrees under the action of the upper pressure, when the water content of collapsible loess reaches saturation state after a torrential rain. The effect of tamping compaction lime soil pile is obvious.