桩尖

弧形十字型桩尖处理PHC管桩斜桩问题

Arc-cross Pile Tip in Treatment of the Inclined Pile Problem of PHC Piles

本文介绍了大头型活瓣桩尖在振动沉管碎石桩施工中的优越性，它具有桩体密度大、充盈系数高、加固效果显著以及工期短的特点。

The superiority of big head pile tip in the construction of crushed stone pile with settling tube is introduced herein .

为此在施工中采用活瓣桩尖，并用0。

Therefore valve stopper is used in construction , and0 .

地震波的输入采用桩尖处输入。

The seismic load is input at the tip of the pile .

之后对比了不同桩尖沉桩过程的土体响应结果之间的差异。

Compared the distinctions of the soil responses between piles with different tops .

预应力管桩桩基不加桩尖危害性之浅见

Hazardness for Pile Foundation Of the Pre-stressing Force Tube Pile Without Pile Toe

桩尖载荷试验方法综述

Pile Toe Load Test Method

讨论了加强肋、桩尖形状、外管突出长度参数对极限承载力和变形性能等力学性能的影响。

The parameters include : reinforcing rib , tip shape , and extension length of outer tube ( OTE length ) .

并通过工程实例，验证了采用大头型桩尖施工挤密碎石桩处理软弱地基的施工质量和加固效果。

The construction quality and result of consolidation in treating soft ground by using the said method are verified by practical project .

对于可能出现闭塞效应的静压管桩宜加设桩尖，减小端阻力，方便贯入。

It is better to add tine to jacked pipe pile when plug effect may appear so that the end resistance can be weakened and the pile can be penetrated easier .

本实用新型属于预应力管桩，特别是涉及一种预应力管桩喷浆式桩尖。

The utility model relates to prestressed pipe pile , especially a gunite type pile tip for prestressed pipe pile comprising a circle shape end plate and a beam plate distributing in crisscross .

动力打桩过程中，由于土层的振源在桩尖处，且由浅到深，通过远场在被保护对象附近设置减振沟是一项有效的减振措施。

Moreover , the damping ditch near the object to be protected is more effective to reduce the magnitude of vibration on account of the epicentre being in the deep soil . the power ;

本文通过工程实例，说明夯扩桩端须带预制钢筋混凝土桩尖或钢桩尖，才能确保桩的施工质量和满足设计要求；

Through the analysis of an engineering example , it is proposed that the precast reinforced concrete drive shoe must be used for the pedestal pile to guarantee the construction quality and meet the requirements of the design .

通过对不同桩尖处理形式的复打沉管灌注桩和静载试验的研究分析，从处理桩尖方面入手，探讨了沉管灌注桩进一步提高承载力的途径。

Through studies and analyses on retapping cast-in-place piles with driven casting and static loading tests of treatment form of different pile tips , the way is discussed for further improving the bearing capacity of cast-in-place pile with driven casting .

预应力混凝土管桩采用敞口桩尖时，沉桩过程中部分桩端土进入桩管内形成土塞，从而减轻了挤土效应。

A part of soil placed in the end of pile gets into pre-stressed concrete pile with open-end in the process of pile-sinking . So a soil plug is formed in the pipe of pile , and the soil-squeezing is cut down .

小截面静压预制桩的尖、平桩底的对比试验

The Contrast Tests between the Small Cross-section Static Pressure Precast Concrete Pile with Pointed End and the One with Flat End

压扩支盘桩的桩尖阀瓣扩压受力分析

Force analysis of valve clack immersed tube for pile with plates

桩标桩或尖的棍子；

To post as a picket .

某些工程中个别桩的桩尖进入持力层过浅，也是导致承载力无法满足设计要求的主要原因。

Another main cause of lower bearing capacity which can not meet design requirement is that several pile 's end enter too shallowly into supporting layer .

某港散货码头接长工程部分桩基采用半封闭钢管桩，桩尖打至砂持力层后，由于砂层液化引起管涌发生。

Part of pile foundation of a bulk cargo wharf extension project adopted semi-closed steel pipe piles . When pile toes were driven to the sand bearing course , piping occurred due to liquefaction .

本文推荐了一种新的试桩方法&桩尖载荷试验法。介绍了方法的基本原理、特点、加载装置、试验方法和资料整理。

A new test pile method pile toe load test , including its basic principle , characteristics , loading equipment , test methods and collected data and information , are recommended .

有了桩顶荷载与桩尖残余沉降的关系，就可以评定桩的极限承载力，并估计桩尖阻力和桩侧阻力。

Knowing the relation between the load at the pile top and the residual settlement of the pile point , it is possible to evaluate the ultimate resistance of the pile , and to estimate the point-resistance and the skin-friction .

广东沿海主要土层桩侧摩阻力和桩尖阻力的分析

Analysis of Friction Resistance Along the Pile and End Resistance in the Main Soil Course of Guangdong Coastal Area

在码头部分增设长桩，使其基桩桩尖均达到硬土层。

To supplement long piles under the frontal platform of the pier with all the tips of piles of this part resting on the same bearing stratum .

本文还提出了依据试桩P～S曲线划分桩尖阻力和桩侧阻力的试算法。

Another trial method to seperate the point resistance and skin-friction based upon the load-settlement curve of the pile are also presented here .

支承桩的桩身摩擦力和桩尖阻力的大小与入土深度及桩身、桩尖处土层的相对刚度密切相关。

The value of frictional force of soil to pile body and resistance to pile toe has a close relation with the penetration depth and relative rigidity of soil layer at pile body and pile toe .

在浅覆盖层花岗岩地区进行钢管桩施工，存在易偏位、桩尖易卷口和进度慢等技术难题。

When installing steel tubular piles in regions where granite is shallowly overburdened , the piles are easy to deviate and the pile tip is easy to warp , resulting in slow driving .

结合工程实例，采用高应变动力试验分析了预应力高强混凝土管桩（以下简称PHC桩）的桩身断裂、接桩缺陷和桩尖破碎等缺陷以及桩身多缺陷情况；

In a case , the high strain dynamic tests was employed to analyze the defects of PHC pile , such as the broken pile , the defect at pile meet or the broken tip .

文章介绍了该种施工方法的质量控制要点及常见问题的处理，如：压桩顺序和入桩路线、管桩养护时间、桩尖的选用、接头平整度控制等。

They are the sequence and rout of pushing piles , curing period of pipe-pile , selection of pile tip , planeness control of joints , etc. .

通过多种方案计算，就不同的荷载水平、桩长、置换率、桩土模量比、桩尖地质条件等因素，对桩土应力比的影响、桩土荷载分担规律进行了分析研究。

By comparison between different schemes computation , the pile-soil stress ratio and the loading distribution rule between pile and soil were analyzed , according to the effect of different load level , pile length , replacement ratio , soil layers and deformation modules of pile .