Study on Reinforcement-curtain Effect and Pile-soil Load Share Ratio of Pile Groups;
研究了桩间距、桩帽大小和填料内摩擦角对桩体荷载分担比的影响。
At present, there are many research methods on pile groups subjected to lateral loads at home and abroad.
目前，国内外对横向荷载作用下群桩的分析方法较多，但在工程应用上仍远不能满足要求。
Effects of pile-to-pile interaction factors on the lateral seismic response of pile groups were analyzed.
并分析了桩与桩相互作用因子对群桩横向地震响应的影响。
In this paper, a failure model has been obtained for pile groups foundation with large high-pile platform.
本文提出了一种砂土中大型高桩台群桩基础的地基破坏模式，并导出了桩端阻力的理论计算公式。
The dynamic responses of pile groups in saturated soil subjected to horizontal harmonic load are researched.
研究了在水平简谐荷载作用下饱和土中群桩的动力反应问题。
It's no doubt that the shaking table test provides the necessary groundwork to study seismic performance of pile groups of Bridges.
振动台试验无疑为可液化场地桥梁群桩抗震性能研究提供必要铺垫。
Many scholars had some attempts for the interaction of pile-soil, but the field tests on pile groups with prototype size were seen seldom.
多年来，许多学者对于“桩与土的共同作用”做了一些尝试，但是作为现场原位试验的情况就很少了。
These conclusions can provide a useful guidance for the theoretical researches, engineering design and construction of super-long pile groups.
这些结论为超长群桩的理论研究、工程设计与施工提供有益参考。
According to the interaction between every two piles, the pile-head flexible matrix of the bending viscoelastic dynamic analysis of pile groups is given.
根据桩间两两相互作用关系给出了群桩弯曲粘弹性动力分析的桩头柔度矩阵。
The different distribution of pile reaction between pile groups composite foundation and composite pile foundation are studied, and some reasons are given.
研究了多桩复合地基与多桩复合桩基在桩顶反力分布上的不同，分析了出现差别的原因。
Therefore, not only the pile spacing but also the pile group layout will have influence on both the bearing capacity and the pile group effect of pile groups.
群桩已不再具有圆形单桩的轴对称性，因此群桩的承载特性及群桩效应不仅受桩间距的影响，而且受群桩布置方式的影响。
A theoretical computational formula has been given, it can react the rule that pile toe resistance changes with pile distance in large pile groups foundation.
该公式能较好地反映大型群桩基础的端阻力随桩距变化的客观规律。
The pile groups efficiency is larger than 1 in the condition of the test. The coaction of pile-soil-cap should be considered in optimum design of pile foundation.
认为类似该场地条件下群桩效率系数大于1，在实际的工程桩基设计中应考虑共同工作以优化设计。
Dynamic impedances of pile groups have been studied almost on a same assumption that rigid caps and soil under it do not touch each other in the current literature.
目前对群桩动阻抗研究的文献，始终局限在刚性承台底与土脱离的假设，而没有考虑实际存在的承台底与土接触的情况。
According to the current situation of super-long pile groups, i. e. more application and less theoretical studies, a large-scale laboratory model test is conducted.
针对超长群桩使用较多而理论研究较少的现状，进行了大型的室内超长群桩模型试验。
According to the principle of the minimum potential energy the deformation of single tension pile and pile groups was analyzed using a modified variational approach.
根据最小势能原理，使用修正变分法来分析抗拔单桩和抗拔群桩的变形。
According to the principle of the minimum potential energy, the deformation of single tension pile and pile groups was analyzed using a modified variational approach.
根据最小势能原理，使用修正变分法来分析抗拔单桩和抗拔群桩的变形。
It may be used for the calculation of the dynamic impedances and internal forces of pile groups, and also for the analysis of the kinematic pile-soil-pile interactions.
可以用于群桩动力阻抗及桩身内力的计算，也可以进行桩—土—桩运动相互作用分析。
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。
Systematic field tests on pile groups with near prototype size have been carried out in order to research into the behavior and bearing capacity of bored pile groups in silt.
为了研究粉土中钻孔群桩的工作性能和承载力等问题，进行了系统的接近于原型尺寸的现场群桩试验。通过埋设测试元件对承台土反力、桩侧摩阻力、桩端阻力、桩土相对位移等进行了测定。
This paper describes a pile groups-soil-pile cap interaction model in the lateral loading and proposes a finite layer-finite element analysis for the single pile and groups pile.
本文研究了水平荷载下桩—土—承台共同作用的问题，对单桩和群桩分别进行了有限层—有限元分析。
Reviewing the researching results and calculating methods of the bearing capacity mechanism of single pile, pile groups or cooperation of piles and pile caps affected under lateral loads.
回顾、总结了目前水平荷载作用下单桩、群桩、以及桩和承台共同工作的受力机理研究成果和分析计算方法；
So based on the condition of displacement coordination, a method which can consider the effect of the cap sharing the load to predict the settlement of pile groups with low caps is advised.
本文考虑承台—桩—土的共同作用，根据位移协调条件，在高承台桩基沉降计算方法的基础上提出考虑承台分担荷载作用的低承台桩基沉降计算方法。
Based on the current studies on large pile groups, an analytical method considering slip of piles and soil and dynamic adjustment of integral whole stiffness of pile groups was put forward.
在分析了大型群桩研究现状的基础上，提出了考虑桩土滑移和群桩桩顶整体刚度动态调整的分析计算方法。
The influences of number of piles, the pile length, the space between piles, and the pile-soil relative stiffness factor on the characteristic of pile groups were analyzed in a systematic way.
分析了刚性承台下群桩桩数、桩长、桩间距和桩土模量比等群桩工作特性的影响。
Based on pile-to-pile interaction factors, the transfer matrix method is used to establish the dynamic model of partially embedded pile groups, while the pile is treated as dynamic Winkler beam.
充分考虑了被动桩与土体的共同作用，基于桩—桩相互作用因子的叠加法，建立了部分埋入群桩的动力模型。
Based on the data obtained from the 17 groups of statistic loading tests and the corresponding calculation analysis, the load bearing capacity of Impaction Rootage-shaped Pile is investigated.
通过17组试桩的载荷试验及计算，对挤压支盘桩的承载能力进行了计算分析与研究。
What's more, bearing capacities of partially inclined piles, inclined pile-groups and partially inclined piles due to pit excavation are also studied based on the parameters from the back analysis.
同时还对局部倾斜桩、倾斜群桩及基坑开挖导致的局部倾斜桩的竖向承载力进行了分析。
Clean the drawer out first, of course, and put the very small pile of things you chose back in the drawer, grouping like things together and leaving space around the groups.
当然要先清洁杂物箱，然后把刚才选出的那些东西放回箱子里，要分类放好，每类件适当留些地方。
What's more, bearing capacities of partially inclined piles, inclined pile-groups and partially inclined piles due to pit excavation are also studied based on the parameters from the back analysis.
从挤土效应及振动影响、浅层障碍、斜桩、桩身破坏等方面总结了静压预应力管桩施工中的常见问题，并分析了产生的原因，介绍了预防措施，以提高桩的合格率。
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