| 弱化饱和土层中桩的双曲型p-y曲线 |
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| 引用本文： | 戚春香,王建华.弱化饱和土层中桩的双曲型p-y曲线[J].天津大学学报(自然科学与工程技术版),2010,43(3). |
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| 作者姓名： | 戚春香 王建华 |
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| 作者单位： | 戚春香(天津大学岩土工程研究所,天津,300072;中国民航大学交通工程学院,天津,300300);王建华(天津大学岩土工程研究所,天津,300072) |
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| 基金项目： | 国家自然科学基金资助项目，中国民航大学科研启动基金资助项目 |
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| 摘 要： | 通过桩与弱化土层相互作用的模型试验,研究了描述具有残余孔压弱化饱和土层双曲型p-y曲线参数的变化规律.结果表明,随土层中残余孔压比的增加,弱化饱和土层的水平极限抗力与土反力模量系数逐渐降低.为进一步分析弱化土层强度与p-y曲线参数的关系,引入了弱化饱和土层的等效强度参数.根据模型试验结果,结合有效应力原理,建立了依据土层等效强度确定土层水平极限抗力及土模量系数的方法.在此基础上,利用双曲函数构造弱化土层的p-y曲线,并与模型试验结果进行比较.结果表明,构造的双曲型弱化p-y曲线与模型试验测得的p、y关系基本一致.说明采用双曲函数构造弱化土层p-y曲线的方法是合理的.
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| 关 键 词： | p-y曲线 桩土相互作用 水平极限抗力 弱化土层 土强度参数 |
Hyperbolic p-y Curve of Pile in Saturated Degradation Strata |
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| QI Chun-xiang,WANG Jian-hua.Hyperbolic p-y Curve of Pile in Saturated Degradation Strata[J].Journal of Tianjin University(Science and Technology),2010,43(3). |
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| Authors: | QI Chun-xiang WANG Jian-hua |
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| Institution: | QI Chun-xiang1,2,WANG Jian-hua1 (1. Institute of Geotechnical Engineering,Tianjin University,Tianjin 300072,China,2. College ofRTransportation Engineering,Civil Aviation University of China,Tianjin 300300,China) |
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| Abstract: | Soil-pile interaction model tests were conducted to research variations of parameters determining hyperbolic p-y curves in degraded saturated sands with residual pore water pressure. Test results showed that the lateral resistance and subgrade reaction modulus coefficient of the degraded saturated stratum gradually decreased with the increase of residual pore water pressure. To analyze the relationship between the strength and parameters determining hyperbolic p-y curves in degraded stratum, equivalent stre... |
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| Keywords: | p-y curve soil-pile interaction ultimate lateral resistance degradation stratum soil strength parameter |
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