| 桩的施工方法对桩基沉降的影响 |
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| 引用本文： | 张定 陈竹昌. 桩的施工方法对桩基沉降的影响[J]. 同济大学学报(自然科学版), 1999, 27(6): 723-727 |
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| 作者姓名： | 张定 陈竹昌 |
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| 作者单位： | [1]上海铁道大学土木系 [2]同济大学地下建筑与工程系 |
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| 摘 要： | 通过对上海饱和粘土中１７座钻孔桩基和１８座打入桩基的实测沉降资料对比说明在荷载、地层剖面、持力层、桩长和桩基几何尺寸等都非常接近的条件下钻孔桩基的沉降小于打下桩基，揭示桩施工方法对桩基沉降的影响，根据桩施工引起的柱负摩阻力概念对两类桩基沉和差异的机制作了分析，并用此概念进行一步说明影响打入桩基沉降的复杂性。
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| 关 键 词： | 类型 沉降 负摩阻力 粘性土 施工 桩基 |
Effects of Pile Installation on Settlement of Groups |
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| ZHANG Ding ,CHEN Zhu-chang ,YAO Xiao-qing. Effects of Pile Installation on Settlement of Groups[J]. Journal of Tongji University(Natural Science), 1999, 27(6): 723-727 |
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| Authors: | ZHANG Ding CHEN Zhu-chang YAO Xiao-qing |
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| Affiliation: | ZHANG Ding 1,CHEN Zhu-chang 2,YAO Xiao-qing 1 |
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| Abstract: | Observation data of 17 bored pile groups and 18 driven pile groups in soft soil regions of Shanghai indicate that settlement of driven pile group is greater than that of bored pile group when the conditions for two types of group in total load, soil situation around pile, bearing stratum, pile length and pile number are about the same. The data show the effects of pile installation on group settlement. Based on concept of negative friction induced by pile installation, settlement mechanism for two types of group and complication of negative friction for driven pile group are discussed. |
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| Keywords: | pile installation settlement negative friction soft clay |
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