水泥土搅拌桩复合地基承载力与桩长的关系研究

随着现代科学技术的发展,在公路和城市道路建设中已有越来越多的地基处理技术。水泥土搅拌桩复合地基处理技术就是其中之一。对复合地基的原理进行了进一步的阐释,分析了常见水泥土搅拌桩复合地基设计中存在的误区,着重分析了复合地基承载力与桩长的关系。从承载力的角度出发,水泥土搅拌桩存在一个"有效桩长"。在工程实践中,不能为了提高复合地基承载力,盲目地增大桩长;否则既增加了工程投资,又没有起到应有的效果。

A Relationship Study of Composite Foundation Bearing Capacity and Pile Length of Cement Soil Mixing Pile

With the development of modern science technology,there are more and more foundation treatment technologies applied in highways and urban roads construction and cement soil mixing pile composite foundation treatment technology is one of these.The principle of composite foundation is explained further and common mistakes occurred in cement soil mixing pile composite foundation design are analyzed with focusing on the relationship between composite foundation bearing capacity and pile length.From the aspect of bearing capacity,there is an effective pile length for cement soil mixing pile.In practice,the pile length cannot be increased blindly not for increasing composite foundation bearing capacity;otherwise,it will add project investment and have no proper effects.