| 大直径桩荷载与沉降关系的改进离散灰色模型 |
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| 引用本文： | 陈似华,杨果林,蒋建清.大直径桩荷载与沉降关系的改进离散灰色模型[J].工业建筑,2009(Z1). |
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| 作者姓名： | 陈似华 杨果林 蒋建清 |
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| 作者单位： | 中南大学土木建筑学院;湖南城市学院土木工程学院; |
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| 摘 要： | 大直径桩荷载与沉降关系曲线一般为缓变形,未必符合指数曲线特性,很可能服从其他非线性特性,为此对离散灰色DGM(1,1)模型进行拓展,建立了非线性离散灰色模型。以此模型为基础利用优化理论求出初始迭代点,提高了非线性离散灰色模型的精度。利用该模型预测大直径桩荷载与沉降曲线,预测值与试验值吻合较好,与GM(1,1)模型、离散灰色DGM(1,1)模型相比,预测精度进一步提高,为大直径桩的荷载与沉降关系曲线预测提供了新的方法。
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| 关 键 词： | 大直径桩 荷载-沉降曲线 离散灰色模型 预测 |
IMPROVEMENT ON A DISCRETE PREDICATING GM(1,1) FOR LOAD-SETTLEMENT PREDICATING OF LARGE DIAMETER PILE |
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| Chen Sihua Yang Guolin Jiang Jianqing.IMPROVEMENT ON A DISCRETE PREDICATING GM(1,1) FOR LOAD-SETTLEMENT PREDICATING OF LARGE DIAMETER PILE[J].Industrial Construction,2009(Z1). |
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| Authors: | Chen Sihua Yang Guolin Jiang Jianqing |
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| Affiliation: | 1.School of Civil and Architectural Engineering;Central South University;Changsha 410075;China;2.School of Civil Engineering;Hunan City University;Yiyang 413000;China |
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| Abstract: | The load-settlement curve of large diameter pile generally is slow deformation curve,which is not surely fit the exponential curve,is possibly subjected to other non-linear curve.In order to fit the load-settlement curve of large diameter pile,the discrete GM(1,1) model is extended,and the non-linear discrete GM(1,1) model is established.The iterative datum value is obtained by the optimization theory,the precision of this model is improved and the improvement on a discrete GM(1,1) model is established.The ... |
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| Keywords: | large diameter pile load-settlement curve discrete GM(1 1) model prediction |
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