| 桩极限承载力的Usher模型预测 |
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| 引用本文： | 蒋建平,刘文白,高广运.桩极限承载力的Usher模型预测[J].江苏大学学报(自然科学版),2009,30(5). |
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| 作者姓名： | 蒋建平 刘文白 高广运 |
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| 作者单位： | 1. 上海海事大学,海洋环境与工程学院,上海,201306
2. 同济大学,土木工程学院,上海,200092 |
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| 基金项目： | 国家自然科学基金资助项目，上海市教委科研项目 |
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| 摘 要： | 为深化对桩承载性能的认识,选用生物领域的Usher生长曲线模型,对桩的桩顶荷载-桩顶沉降曲线(即Q-s曲线)进行拟合,并对其极限承载力进行预测.给出了Usher模型的建立与求解,并用于分析3根试桩(包括2根灌注桩、1根钢管桩)的实测资料.结果表明:Usher模型对3种类型的Q-s曲线有高的拟合精度;该模型拟合效果优于双曲线模型,特别是在曲线的末端;利用这些拟合方程式能对3种桩的极限承载力进行预测.
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| 关 键 词： | 桩 数学模型 承载力 预测 曲线拟合 |
Prediction of ultimate bearing capacity of piles based on Usher model |
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| Jiang Jianping,Liu Wenbai,Gao Guangyun.Prediction of ultimate bearing capacity of piles based on Usher model[J].Journal of Jiangsu University:Natural Science Edition,2009,30(5). |
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| Authors: | Jiang Jianping Liu Wenbai Gao Guangyun |
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| Institution: | 1.College of Ocean Environment and Engineering;Shanghai Maritime University;Shanghai 201306;China;2.College of Civil Engineering;Tongji University;Shanghai 200092;China |
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| Abstract: | In order to enhance the understanding of piles bearing behaviors,Usher mathematical model in biological field was selected to fit load-settlement curves(i.e.Q-s curves) of piles and the ultimate bearing capacity of piles was predicted.Estabilishment and solution of Usher model were completed,and this model was used to analyze field load testing data of 3 types piles(including 2 cast-in-place piles and 1 steel pipe pile).The results show that the fitting precision of Q-s curves is high.The fitting effect of ... |
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| Keywords: | piles mathematical model bearing capacity prediction curve fitting |
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