灰色预测法在单桩竖向静载荷试验中的应用
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(1 浙江大学建筑设计研究院,杭州 310027; 2 浙江大学岩土工程研究所,杭州 310027)[摘要]根据灰色理论,建立了单桩荷载沉降关系的SGM(I,1)模型,介绍了运用该模型在有限的实测数据条件下预测单桩完整的荷载沉降关系以及单桩极限承载力的方法,并通过工程实例的计算分析,证明该模型具有良好的预测精度,满足工程实际需要。[关键词]单桩极限承载力;灰色预测;SGM(I,1)模型Application of grey prediction to static load test of a single pileQian Lei1,Gan Gang1,Hu Anfeng2(1 Architectural Design and Research Institute of Zhejiang University, Hangzhou 310027, China;2 Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China)Abstract:Based on the grey theory, SGM(1,1) model of load-settlement relation for single pile is established and the way of using it to predict the integrated relationship of load-settlement and the ultimate bearing capacity of a single pile with limited measurement data introduced. The results of engineering cases prove that this method is reliable, and the precision of prediction can meet engineering need.Keywords:ultimate bearing capacity; grey prediction; SGM(1,1) model作者简介:钱磊,硕士,注册土木工程师(岩土),一级注册结构工程师,Email:qlstonegc@126.com。参考文献[1]邓聚龙. 灰色控制系统[M]. 武汉:华中理工大学出版社,1993.[2]罗战友,等. 未达到破坏的单桩极限承载力的灰色预测[J].岩土力学,2004,25(2).[3]戚科骏,等. 单桩承载力的灰色预测方法[J]. 岩石力学与工程学报,2004,23(12).[4]刘金砺. 桩基工程与施工技术[M]. 北京:中国建材工业出版社,1994.