静压桩与粉喷桩在复合地基中的联合应用

Combining application of precast piles and dry jet mixing piles to composite foundation of deep and thick soft soil

通过对云南大理经济开发区深厚软土特征与结构的研究,分析了目前该地区地基处理的方法及出现的问题,提出了联合使用较长的静压预制桩和浅部粉喷桩,形成深部和浅部复合地基共同承载的设计方案。这是刚性桩与柔性桩在特定条件下联合运用的尝试。通过具体工程实践证明了这一方案的可行性,为深厚软土地区地基处理找到了一新的方法。

Through studying the structural characters of the deep and thick soft soil in Dali economic development district of Yunnan province,actual methods of reinforcing foundation and appeared problems,are analyzed;and a new designing project for which the longer precast piles and dry jet mixing piles are adopted to reinforce its composite foundation,is put forward.The project is a practice of combining application of rigid piles and flexible piles in a foundation.Through engineering practice,its feasibility is proved,so as to offer a new method to reinforce foundation in deep and thick soft soil area.