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.
讨论了桥台的计算组合、群桩及承台的计算；
The combining calculation of abutment and the calculation of pile group and pile cap are discussed.
该公式反映出群桩间距对极限承载力的影响。
It is showed that the pile spacing has a great influence on the ultimate bearing capacity of pile tip.
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.
深厚软土地基中群桩沉降的预测一直是工程设计中的难点。
In the geotechnical engineering design, it was difficult yet to estimate the settlement of pile - group in the deep soft soil.
有效桩长不仅与桩土特性有关，还与群桩及荷载分布有关。
The effective length of piles not only depends on soil and pile characteristic, but also depends on grouped piles and loads distribution.
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.
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.
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.
通过现场足尺试验，研究了软土中水泥土群桩的承载力特性。
Systematic in situ tests were carried out to study the bearing capacity of composite foundation with cement-soil piles in soft clay.
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.
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.
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.
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.
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.
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.
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.
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。
According to the interaction between every two piles, the pile-head flexible matrix of the bending viscoelastic dynamic analysis of pile groups is given.
根据附加应力叠加原理，逐步推导得到不同布桩形式的群桩效应系数计算公式。
The formula for effect coefficient of piles group were solved gradually under different shape of laying-out piles according to principle of additional stress superposition.
群桩施工时，后打入的桩体使到先打入的桩体产生倾斜、上抬、翘曲甚至断裂。
While pile group construction, later pile would make the former pile tilt the balance, elevation, warp or even break.
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。
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.
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.
对软土地基中的微型桩单桩及群桩进行了水平荷载试验，并对试验结果进行了分析。
Prototype testing study is made on single micropile and micropile groups under lateral loading in soft soil.
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.
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。
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.
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 current situation of super-long pile groups, i. e. more application and less theoretical studies, a large-scale laboratory model test is conducted.
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。
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.
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.
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.
应用推荐