桩头缺陷是常见和严重的钢筋混凝土钻孔灌注桩质量问题。
The blemish is a familiar and important reinforced concrete to drill a hole to infuse to note a quantity problem.
但现场试验时，观测精度要求较高，尤其是桩头处理要求细致认真。
However, the requirements of observation accuracy are high, especially the treatment of pile cap should be careful and earnest on the test site.
由于前排桩和后排桩的受荷模式不同、刚度不同，从而桩头弯矩不同。
The bending moments of pile heads at the front piles and the back ones are different due to the difference in loading mode and structural stiffness.
采取措施保证桩顶(尤其是桩头部分)混凝土强度，提高单桩容许承载力。
The strength of top pile concrete, especially head part, ensured by taking measurement, Single allowable bearing capacity of this pile is enhanced.
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.
英式马鞍非常小：它没有桩头（可能是专有名词），马镫也比西式马鞍的要小。
English saddles are very small: they have no saddle horn, and the stirrups are smaller than those on Western saddles.
现浇薄壁管桩低应变检测时，存在桩头三维效应以及平截面假定的适应性问题。
The three-dimensional effects of pile head and applicability of plane-section assumption are main problems in low strain dynamic tests on cast-in-situ concrete thin-wall pipe piles.
通过工程实例，介绍大孔径扩大桩头人工挖孔灌注桩的施工方法及质量保证措施。
Based on the engineering practice, this paper introduced constructional technique and quality assurance measures of big bore hole digging and pouring with expansion pile head.
通过工程实例分析了影响夯扩桩桩头质量的因素，提出了控制夯扩桩桩头质量的措施，以进一步提高夯扩桩的质量。
The factors which influence head of tamping reamed piles quality is analyzed through practical example of project, and measures in controling head of tamping reamed piles quality is given.
从分析立柱柱头与顶梁柱窝的结构形式入手，采取定量计算的方法分析了引起桩头变形的原因，指出了设计上存在的缺陷。
Started from the analysis of connection form between prop end and pit on top beam and quantified calculation to analyze the cause of prop end deformation, points out the defect for design.
建筑施工废料主要由碎砖、混凝土、砂浆、桩头、包装材料等组成。废料数量因施工及管理情况不同，各建筑工地差异很大；
Construction waste is mainly composed of bricks, concrete, mortar, piles and packing material, and its quantity varies largely in different sites.
另外，桩头约束的存在与否，对单桩的横向阻抗函数值也有较大的影响，桩头有约束的阻抗函数值要明显大于无约束的阻抗函数值。
It also should be noticed that whether there is restraint or not on top of the pile will have great influence on the impedance function.
通过对某小学活动馆的预应力管桩基础在施工过程中出现的桩头偏位的情况进行分析与处理，取得了较好的实用效果并得到了一些有益的经验。
Pre-stressed pipe pile foundation is used in the gymnasium of certain primary school, in which some pile-heads of them are deviated during the course of constructing.
通过对某小学活动馆的预应力管桩基础在施工过程中出现的桩头偏位的情况进行分析与处理，取得了较好的实用效果并得到了一些有益的经验。
Pre-stressed pipe pile foundation is used in the gymnasium of certain primary school, in which some pile-heads of them are deviated during the course of constructing.
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