水泥土搅拌桩复合地基极限承载力灰色预测  

Gray Prediction on Ultimate Bearing Capacity of Composite Foundation Reinforced by Cement-soil Mixing Pile

作　　者：俞伟[1] 王永恒 林弘磊 

机构地区：[1]福建省建筑科学研究院,福州350025 [2]重庆市政设计研究院,重庆400020 [3]中南市政设计研究院,武汉430050

出　　处：《路基工程》2010年第3期142-144,共3页Subgrade Engineering

摘　　要：载荷试验是确定复合地基承载力的可靠方法,但试验常无法进行到极限荷载阶段。如何利用未达到破坏的试桩资料来确定水泥土搅拌桩复合地基极限承载力是一个重要的工程问题。文中根据灰色预测理论中的非等步长GM(1,1)模型,提出一种预测水泥土搅拌桩复合地基极限承载力的方法。该法拟合度较高,有其适用性。Load test is a reliable method to determine bearing capacity of composite foundation,but it normally cannot be further into ultimate load.It is an important engineering problem to determine the ultimate bearing capacity of composite foundation reinforced by cement-soil mixing pile with unbroken test pile data.This paper puts forward a method to predict the ultimate bearing capacity of composite foundation reinforced by cement-soil mixing pile with unequal step GM（1,1） model in gray prediction theory,which has higher fittingness and applicability.

关 键 词：水泥土搅拌桩 复合地基 极限承载力 非等步长GM(1 1)模型 

分 类 号：TU472[建筑科学—结构工程]