| 贺炜,陈永贵,梁斌.超长桩承载性状分析的无网格局部彼得罗夫—伽辽金法[J].南华大学学报(自然科学版),2009,23(2):101~106.[HE Wei,CHEN Yong-gui,LIANG Bin.Meshfree Local Petrove-Galerkin Method for Studying Bearing Behavior of Super Long Pile[J].Journal of University of South China(Science and Technology),2009,23(2):101~106.] |
| 超长桩承载性状分析的无网格局部彼得罗夫—伽辽金法 |
| Meshfree Local Petrove-Galerkin Method for Studying Bearing Behavior of Super Long Pile |
| 投稿时间：2008-12-26 |
| DOI： |
| 中文关键词: 桩基工程 超长桩 无网格法 荷载-沉降曲线 |
| 英文关键词:pile foundation super-long pile meshfree mthod load-settlement curve |
| 基金项目:国家自然科学基金资助项目（40802064）;长沙理工大学人才引进基金资助项目（1004178) |
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| 中文摘要: |
| 基于紧支试函数加权残量法介绍了局部彼得罗夫-伽辽金法（MLPG）试探函数和检验函数的构造和选取.然后深入探讨其位移边界条件的处理方法、桩土材料弹塑性性质模拟方法、不连续面处理方案等及程序实现过程,并编制了相应的计算程序.结合力学经典算例验证无网格局部彼得洛夫－迦辽金法的计算精度,最后对超长桩进行了因素分析,由分析得到了基桩桩顶沉降、荷载-沉降曲线非线性性质与基桩长径比间的关系,且结果表明,存在一个有效桩长,当基桩长度大于该值时,无法以增加桩长的方式获取更高的承载力,其值与地基土性质有关. |
| 英文摘要: |
| Based on weighted residual method,the construction or selection of test function and weight function of Meshfree Local Petrov-Galerkin (MLPG) were introduced.Then,the dealing method of displacement boundary conditions,simulation method of elastic-plastic behavior of reinforcement and surrounding soil,dealing method of non-continuous on the interface and how the relevant program process brough about were deeply discussed,and the codes were also programed.The accracy of the local Petrove-Galerkin method was verified by comparing the calculating result to the classical solution in mechanics.Lastly,the bearing behavior of super-long pile was analyzed by the codes,and the relationship between pile length-diameter ratio and pile top settlement,nonlinear behavior of load-settlment curve was got.And the results also showed that,there is a effective pile length,which is related to the soil stiffness,when a pile longer than it,the bearing capacity of pile can not be enhanced by enlarging the pile length. |
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