| 高喷插芯组合桩极限承载力的灰色预测 |
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| 引用本文： | 任连伟,刘汉龙,张华东,郑浩.高喷插芯组合桩极限承载力的灰色预测[J].防灾减灾工程学报,2009,29(2). |
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| 作者姓名： | 任连伟 刘汉龙 张华东 郑浩 |
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| 作者单位： | 1. 河海大学岩土力学与堤坝工程教育部重点实验室,南京,210098;河海大学岩土工程科学研究所,南京,210098
2. 天津华正岩土工程有限公司,天津,300451 |
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| 摘 要： | 高喷插芯组合桩(JPP)是一种新的桩型,具有承载力高、造价低等优点。许多工程单桩的静载荷试验只能加到两倍设计荷载,无法达到试桩的极限或破坏荷载,因此利用有限的实测数据比较准确地预测高喷插芯组合桩的极限承载力具有一定的现实意义。根据灰色理论,介绍了预测单桩竖向极限承载力的自调整非等步长GM(1,1)模型,讨论了三种不同的灰色模型在有限的实测数据条件下预测单桩极限承载力以及荷载—沉降关系的方法。通过对达到破坏和未达到破坏的工程实例的分析计算,证明三种模型的预测精度是令人满意的,其中等维新息模型预测精度最高。
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| 关 键 词： | 高喷插芯组合桩 极限承载力 灰色预测 非等步长GM(1 1)模型 相对误差 |
Application of Gray System Theory on Prediction of Ultimate Bearing Capacity of Jet Grouting Soil-Cement-Pile Strengthened Pile |
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| REN Lian-wei,LIU Han-long,ZHANG Hua-dong,ZHENG Hao.Application of Gray System Theory on Prediction of Ultimate Bearing Capacity of Jet Grouting Soil-Cement-Pile Strengthened Pile[J].Journal of Disaster Prevent and Mitigation Eng,2009,29(2). |
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| Authors: | REN Lian-wei LIU Han-long ZHANG Hua-dong ZHENG Hao |
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| Affiliation: | REN Lian-wei~(1,2),LIU Han-long~(1,ZHANG Hua-dong~3,ZHENG Hao~(1,2) (1.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing 210098,China,2.Geotechnical Research Institute of Hohai University,3.Tianjin Huazheng Geotechnical Co.,Ltd,Tianjin 300451,China) |
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| Abstract: | Jet grouting Soild-cement-Pile Strengthened Pile(JPP) is a new type of pile and has the advantages of high bearing capacity and low costs.The loads in many static tests of engineering single pile can be applied up to only double of the design load but not the ultimate or failure load.It is of pratical significance for civil engineers to accurately predict the ultimate bearing capacity of JPP with the limited measurement data available.Based on the gray theory,a non-uniform step GM(1,1) model was introduced ... |
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| Keywords: | Jet grouting soil-cement-pile strengthened pile(JPP) ultimate bearing capacity gray prediction non-uniform step GM(1 1) model relative error |
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