This paper analyzes the effect of negative friction on pile's axial force and its calculation.
分析研究负摩擦力对桩轴力的影响及基桩负摩擦力的计算。
Change of negative friction in pile with consolidation time is simulated by finite element method.
采用有限元方法模拟了基桩负摩阻力随着固结时间的变化。
Measures to overcome negative friction caused by the collapse of loess in pile foundation are recommended.
为了防止桩基因黄土地基湿陷而产生负摩擦力，介绍了克服桩基负摩擦力的措施。
Due to the important infection in using foundation, the negative friction in pile has became one of the engineering skill focus.
鉴于负摩擦力对桩基础应用过程中的重要影响，桩基础的负摩擦力已经成为基础工程界的一个技术热点。
Based on load transferring concept, the author puts up with a new method which USES double broken line model to calculate negative friction.
本文基于荷载传递函数的概念，提出了一种用双折线模型来计算负摩阻力的新方法。
The greatly reduced capacity of a single pile resulting from the negative friction leaves the end-bearing pile unsuitable in the backfilling soil.
实例分析表明，由于桩侧负摩阻力的影响，单桩承载力大为降低。产生负摩阻力的土层，不宜采用端承型桩基。
Based on load transferring concept, this paper puts up a new method which USES double broken line model to calculate the negative friction of pile.
基于荷载传递函数的概念，提出了一种用双折线模型来计算桩负摩阻力的方法。
The calculation of pile negative friction is a important foundation for pile foundation design when pile foundation is in large area filled up ground.
在大面积的填土地基上做桩基础，桩的负摩擦力的计算是桩基设计中的重要依据。
By applying theories of Fuzzy sets, proposal is offered of an analytic method of Fuzzy inversion of negative friction on shafts through DE watered subsiding grounds.
采用模糊集理论，提出了一种模糊反演疏水沉降地层井筒负摩擦力的分析方法。
The author ascribed the shaft deformation and failure to a complex contribution of three factors, namely geological weak position, negative friction, and horizontal loading.
在竖井变形破坏的工程调查和总结研究的基础上，提出了徐淮地区竖井变形破坏“三因素综合破坏”观点。
The characters and the calculation of negative friction of a pile group are given. Several approximately estimating methods are compared with the others and commented on as well in this paper.
主要论述群桩负摩阻力的特点及群桩负摩阻力的计算，并结合国内外几种常用的近似估算法进行比较，对各种计算方法加以评价。
So friction does negative work — it's converted into heat.
所以摩擦力做负功-，转化成热能。
A close relationship inevitably generates both positive and negative emotions. Where there is contact, there is friction.
亲密的关系不可避免会同时产生正面的和负面的情绪。有接触的地方就会有磨擦。
As airfoil thickness is increased, the average pressure drag, affected by leading edge vortex is reduced even to be negative, and meanwhile friction has little increase.
由于前缘涡的影响，翼型厚度增加，平均压差阻力系数变小，甚至会出现负值。
The test of negative skin friction along the single pile or wharf bent piles, which is modeled after piles of ZanJiang harbor, is studied.
结合湛江港某码头工程基桩，用模型试验模拟现场地质情况，对港口单桩、排架桩基负摩擦力进行模型试验。
The test of negative skin friction along the single pile is studied, which is modeled after piles of Zhanjiang harbor.
结合湛江港某码头基桩工程，对桩的负摩擦力进行试验研究。
The characteristics of negative skin friction (NSF) with working load on pile top were analyzed.
分析了在桩顶荷载作用下的负摩阻力特性。
The effect of Al content, direct current negative bias and post treatment on the friction coefficient of the films was studied.
在此基础上讨论铝含量、直流偏压及后期处理对薄膜摩擦系数的影响。
The negative skin friction resistance caused by collapsible deformation after water soaking into collapsible loess will reduce the vertical bearing capacity of piles.
湿陷性黄土地区地基土浸水湿陷后，桩侧表面可能产生负摩阻力，将导致桩基承载力降低。
Combined with the previous results and the property of PCC pile, based on Terzaghi consolidation theory, mechanism of negative skin friction of PCC pile has been studied.
结合以往研究实心桩的成果和PC C桩自身的特点，基于太沙基固结理论，探讨了PCC桩负摩阻力作用机理。
Engineering accidents often occur due to negative skin friction in pile foundation engineering. The research on problems of negative skin friction has been paid more and more attention.
工程中，因负摩阻力问题造成工程事故屡有发生，负摩阻力问题相关研究现在越来越受到重视。
Negative skin friction is one of important problems in design of pile foundation, but the negative skin friction of pile groups considering time effect is less studied.
基桩负摩阻力是桩基础设计中必须考虑的重要问题之一，但是针对考虑土体固结时间效应的群桩负摩阻力研究却相对较少。
Then, the effect of pile head vertical load value on negative skin friction is analyzed.
对桩顶荷载大小的影响进行了研究。
In the engineering project, negative skin friction is the drag force that will reduce the vertical bearing capacity and cause differential settlement of the structure.
工程中由于负摩阻力产生的下拉荷载不仅使桩竖向承载力减小，还会导致结构物的不均匀沉降。
The axial force of piles first increases with the depth and then decreases. The variation of negative skin friction with the depth of piles is nonlinear.
由于负摩阻力的作用，桩身轴力随着深度的增加先增大后减小，桩侧摩阻力沿深度呈非线性变化。
Distribution curves of negative skin friction were similar to parabola, as was also found in some field test studies.
负摩阻力分布曲线大致呈抛物线型，与桩基现场浸水试验结果相似。
Distribution curves of negative skin friction were similar to parabola, as was also found in some field test studies.
负摩阻力分布曲线大致呈抛物线型，与桩基现场浸水试验结果相似。
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