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有限元分析结果表明，影响桩基负摩阻力特性的桩体材料弹性模量存在一个临界值。
Finite element analysis shows that a critical value exists for Young's module of pile that affects NSF character.
试验的观测结果表明，地震诱发黄土震陷时的桩基负摩阻力不容忽视，应当在桩基设计时加以考虑。
It was shown by these test data that the NSF along piles induced by seismic settlement of loess was significant and should not be ignored in the design of pile foundation.
阐述了桥梁桩基负摩阻力产生的原因，分析了桩基中性点位置确定、负摩阻力计算等问题，并提出了十条有效减少负摩阻力的措施。
This paper expatiates on the causes of negative frictional resistance which may appear on bridge piles, analyses the calculation methods and gives ten methods reducing it.
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