| 运用FLAC模型分析PHC管桩群桩效应 |
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| 引用本文： | 张仕洲,王昌达.运用FLAC模型分析PHC管桩群桩效应[J].路基工程,2010,0(4):189-191. |
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| 作者姓名： | 张仕洲 王昌达 |
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| 作者单位： | 东南大学交通学院，南京210096 |
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| 摘 要： | 运用FLAC模型模拟了承台荷载作用下的PHC管桩群桩，得出了荷载-沉降曲线，并与现场所得曲线进行对比分析，结果证明二者吻合较好。然后采用该模型分析了在桩数不变的情况下，桩长L、桩距Sa等对群桩效应及其系数η的影响。结果表明:桩基极限承载力随L和Sa的增长而逐渐增大，但其幅度逐渐减小；η随L的增长而减小，而幅度逐渐降低；η与Sa近似一种线性增长的关系，但幅度随Sa的增大而逐步减缓。
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| 关 键 词： | FLAC PHC管桩 群桩效应 群桩效应系数 |
| 收稿时间： | 2019-11-11 |
Analysis on Efficiency of PHC Pipe Pile Group Using FLAC Model |
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| Authors: | ZHANG Shi-zhou WANG Chang-da |
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| Affiliation: | (School of Transportation,Southwest University,Nanjing 210096,China) |
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| Abstract: | PHC pipe pile group under bearing platform load is simulated with FLAC model and load-settlement curve is educed.Compared to the curve obtained on site,it is found that the two has goodness of fit.The influence of pile length L and pile distance Sa is analyzed on pile group effect and its coefficient η under unchanging pile quantity using this model.The result shows that pile foundation ultimate bearing capacity gradually increases with the increase of L and Sa,with amplitude gradually reduced.η decreases with the increase of L,with amplitude gradually reduced.The relationship between η and Sa is similar to linear increase,but the amplitude gradually reduces with the increase of Sa. |
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| Keywords: | FLAC |
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