文中考虑了竖向力对群桩刚度的影响以及桩基承台水平位移与弯曲、扭转位移的耦合作用。
The effect of the vertical force on the pier stiffness and the interaction among the level, bending and torsion displacement is also studied.
群桩中桩身压缩由单桩静载试验得到的桩顶沉降与桩端沉降之差求得，群桩的桩端沉降由分层总和法计算。
The compression of the pile in the pile group can be determined by static load test. The settlement of the pile toe is calculated by layer wise summation method.
对于必须考虑承台作用的低承台群桩，本文的计算结果是很有价值的。
The effect of SFRC on mechanics behavior of thick pile caps has also been analyzed systematically in this paper.
应用担普拉斯数值反演方法分析了群桩垂向粘弹性动力反应。
This paper presents the analysis of the vertical viscoelastic dynamic responses of pipe group by Laplace numerical inversion method.
水平受荷群桩，“正斜”单桩组成的群桩比直桩群桩和“负斜”单桩组成的群桩的承载力大。
Under lateral load, the positive battered pile group has bigger bearing capacity than the vertical and negative battered pile group.
桩桩相互作用降低了桩的刚度，并使群桩的有效桩长加大了。
The pile stiffness is reduced by the pile-pile interaction and the effective length of piles becomes longer.
基于弹性理论方法，结合分层总和法，编制了群桩沉降计算程序，并掘此对普通群桩和组合桩群桩性状和沉降计算进行研究。
Based on elastic methods and the layer-wise summation method, a program developed for settlement calculation of pile ground and combined composite foundation.
差异沉降是群桩复合地基的一个不容忽视的问题。
Differential settlement is an important problem in composite foundation of pile group.
通过实测资料和理论计算值的比较，提出了群桩水平地基系数的建议值。
Suggested values of pile group horizontal foundation coefficients are given through comparison between observation data and theoretical calculation values.
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。
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.
对不规则波与流共同作用于群桩的水动力特征进行试验分析。
The hydrodynamic features of irregular wave and current loads jointly acting on group piles are experimentally investigated.
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。
At present, there are many research methods on pile groups subjected to lateral loads at home and abroad.
同时还用被动破坏理论阐述了群桩外部塑性区土中的应力状态。
Finally, according to passive failure theory, the stress SLATE in plastic soil zone outside cluster of piles is presented.
在软土地基上建造的高层建筑，有时因地下围护结构的失稳或基坑挖土方法的不当造成基础群桩发生严重位移的工程事故。
The underground pit wall structure unstability or foundation pit excavations accident will cause multi -pile(group- pile) serious movements when high- rise building built on soft ground.
并且，板下单桩及群桩的桩端阻力均能较充分的发挥出来。
Moreover, the tip resistance of pile groups is better used than the single pile.
再次，运用二维轴对称有限元法以及三维有限元法，系统分析了挤扩支盘桩单桩和群桩的承载变形性状。
Thirdly, the bearing and deformation characteristics of single and group piles are investigated by means of axisymmetric finite element analysis (FEA) and three-dimensional FEA.
本文根据圆柱孔扩张理论分析了在单桩周围和群桩内部土中产生的打桩挤压应力，并与室内模型试验和工程实录资料作了比较。
Based on the cylindrical cavity expansion theory, the squeeze stress induced by pile driving in soils around a pile and inside cluster of piles is analyzed.
本文延伸单桩之非线性t -Z曲线理论，应用于刚性群桩工程。
In this paper is extended the nonlinear T-Z Curve of single pile, to rigid group piles.
采用两阶段分析方法，提出了隧道开挖对群桩竖向位移和内力影响的解析计算方法。
A simple analytical two-stages method for determining the settlement and internal forces of group pile caused by tunneling was present here.
为此提出了采用深埋式变阶群桩进行综合防治的方法。
Thus a method is proposed for comprehensive prevention with a deeply buried stage variation cluster piles.
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。
Effects of pile-to-pile interaction factors on the lateral seismic response of pile groups were analyzed.
针对群桩墩处河床局部冲刷的复杂性，运用正态动床物理模型较好地预测了桥墩附近河床局部冲刷，并获得了现场监测结果的验证。
According to the local scouring around the pile foundation of the pylon, a normal movable-bed physical model test is conducted to predict the local scouring and is verified by the field measured data.
采用子结构方法研究了公路桥梁考虑群桩—地基土—空间桥梁结构相互作用分析方法。
A substructure method for the analysis of a highway bridge, considering interaction of group piles-soil-spaced bridge structures, is discussed in detail.
应用有限棱柱单元法对群桩与土相互作用系统进行了三维弹塑性分析，并以无限棱柱元模拟半无限空间地基土的边界条件。
In this paper, the three dimensional elastoplastic analysis of a group pile soil interaction system is made by using the finite prism element method.
通过单桩的荷载沉降曲线确定群桩中单桩的刚度，并可用逐次逼近的方法求解桩顶反力和基础沉降，避免了对刚度的非理性调整。
Single stiffness is presented through Q-S curve, and the load of the top of pile is computed by circulating many times, so it can avoid man-made rectification.
斜桩以及有斜桩群桩广泛应用于桥梁、码头以及大型输电线路基础等。
Battered pile and pile group are generally used in bridge, wharf and foundation of transmission power.
同时研究了群桩上浮规律和影响因素。
The floating rules and influence factors of group pipe piles were studied.
减小井距可节约工程费用，但会引起群桩效应而导致拒锤现象发生。
Reducing well spacing can economize project cost, but it will cause group pile effect and bring on the phenomenon of repelling hammering.
扶壁式轻型桥台是由台帽、耳墙、扶壁、胸墙、群桩承台、锥坡、裙墙组成。
The buttressed light type abutment consists of abutment cap, side wall, buttress, breast wall, group pile cap, conical slope and skirt wall.
提出了一种考虑空间变刚度的群桩设计新方法，改变“等桩长、等桩距、等桩径”的传统设计方法。
This paper puts forward a new design method for group piles considering of the space-varying rigidity and changes the traditional method of "equal long, equal distance, equal diameter".
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