湿陷性黄土中疏桩基础的设计方法研究

RESEARCH ON THE DESIGN METHOD OF THE SCATTERED PILE FOUNDATION IN COLLAPSIBLE LOESS FOUNDATION

在多层建筑的地基处理中,疏桩基础较传统意义上的桩基在工程造价等方面有明显的优势。由于黄土具有湿陷性,因而疏桩基础在黄土地基中的应用具有其特殊性。针对湿陷性黄土地基中疏桩基础的应用,提出了首先采用灰土挤密桩消除地基土的湿陷性,然后进行疏桩基础的设计。详细介绍了灰土挤密桩的做法和地基处理后疏桩基础的设计方法。对湿陷性黄土地基中疏桩基础的推广应用提供了一定的参考价值。

The scattered pile foundation has the apparent advantage compared with the traditional pile foundation in the aspect of the project cost in the multi - building. Because of the collapsibility of loess, the application of the scattered pile foundation in the loess foundation is different from the others. First, the lime - soil compaction pile is presented to banish the collapsibility, and then does the design of the scattered pile foundation. This paper presents the method of the lime-soil compaction pile and the method of the scattered pile foundation on the treated foundation. Afford certain theoretical foundation for the spreading and application of the scattered pile foundation in collapsible loess foundation.