The boundary condition at the pile head plays an important role in pile responses.
桩头处的边界条件在桩反应中起着重要的作用。
Then, the effect of pile head vertical load value on negative skin friction is analyzed.
对桩顶荷载大小的影响进行了研究。
Static loading test, which is expensive, is usually required for getting pile head stiffness.
为了确定桩的刚度，通常需要通过静载荷试验测取，耗资巨大。
In mest current methods for computation of pile head stiffness, pile is supposed to be rigid.
现行桩的刚度计算大都假设桩为刚性。
Transient lateral response of pile subjected to lateral impulse load at the pile head is studied.
解析地研究了桩顶受到横向冲击荷载时桩的瞬态横向动力响应。
A new method to compute the pile head stiffness with the load transfer method is proposed in this paper.
本文提出用分层荷载传递法计算单桩刚度，能方便地考虑桩的可压缩性、分层土的性质和桩截面的变化。
The drivability study of piling requires modeling of the hammer impact to calculate the input force wave at the pile head.
桩的可打性研究需要模拟桩的锤击，计算出桩顶的应力波。
The anchor pile support apparatus for pneumatic caisson includes bearing block, jack, steel bracket, anchor pile and expanded pile head.
本发明公开了一种气压沉箱锚桩支承装置，包括垫块、千斤顶，钢托架，锚桩，桩顶扩大头。
The tested signal on pile head is the convolution of the vibration resource and frequency response function of itself in domain of time.
实测桩顶响应信号是振源与系统频响函数的时域卷积。
In this paper, the equivalent conversion principle from self-balanced q-s curve to traditional q-s curve on pile head is introduced simply.
本文简要地介绍了桩基自平衡测试的Q—S曲线向传统静载试验q—S曲线的等效转换原理。
With the shearing deformation theory and deductive theory, the calculational formulas of flexibility coefficient of the pile head can be obtained.
采用剪切位移法，利用递推原理导出桩顶柔度系数的计算公式；
In the paper, a shear spring model is proposed to simulate the constraint of the soil. Based on this model, the theoretic formula of pile head stiffness is derived.
本文提出的用模拟桩周土约束的剪切弹簧模型来计算单桩刚度，并推导出了相应的理论计算公式。
In the current harbour code, the formula of pile head stiffness is based on experience, and the error of the code value, compared with the measured value, is remarkable.
而现行《港工规范》桩的刚度计算公式是经验性的，与实测值相比误差较大。
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，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。
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.
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。
In the time of pressing the pile, the grout are inject into the soil. When the pile tip reaches the design depth, then continue to inject grout into the pile, so that the pile head expand.
在压桩过程中同时在桩侧注入浆液，桩尖达到设计深度后，浆液随着桩的沉入在桩端形成注浆扩大头。
Compared with the existing methods, the proposed method could obtain more reasonable results which could decrease pile group effect and render a distribution of pile head load agreeable to the fact.
与现有的方法相比，该方法能够取得较好的结果，即使群桩之间被夸大的效应减小了，桩顶荷载的分布更趋于实际工况。
It was fun to cut off his head and see him disappear in a pile of dust.
我砍下他的头，看着他变成一堆尘土的时候觉得开心极了。
Those around the edges had been packed tightly, head to toe, like sardines in a tin, while those thrown into the middle were tossed in a disorderly pile.
那些站在坑边儿的人被包得严严实实的，从头到脚，就像罐头中的沙丁鱼，而那些已被扔进坑里的尸体胡乱地堆在一起。
Put your head down in front of this garage. Under that dumpster is a big pile of money.
你低头看车库前面，在那个垃圾桶下面有一大撂钞票。
The strength of top pile concrete, especially head part, ensured by taking measurement, Single allowable bearing capacity of this pile is enhanced.
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。
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。
Reinforcement of soft soil foundation with dusting pile is capable of effectively lowering the settlement of subgrade, lessening the vehicle bump at bridge head.
通过使用粉喷桩加固软基，有效降低路基沉降，减少桥头跳车现象。
A pile of China dishes rested precariously on the head of the acrobat.
杂技演员头上危险地顶着一叠瓷碟。
Taking bridge head area of Songtiao River for example, discussion has been made hereby on key points of the design, construction and acceptance of cement mixed pile.
该文以宋跳河桥桥头地区为例，对粉喷桩设计和施工及验收中注意事项作了探讨。
At the head of the table was a large pile of apples . Someone had written a note and placed it next to the apples .
桌子的前端有一大堆的苹果，有人在苹果旁边留了一张字条。
It puts the trapeze artist to shame. Look at us, We run a tight rope daily, balancing a pile of books on the head. Baby-carriage, parasol, kitchen chair, still under control. Steady now!
它会使吊秋千的表演者都感到羞愧。每天我们过着崩紧的绳子样的生活，在头脑中堆积如山的书本中寻找平衡。婴儿车，阳伞，厨房讲座，现在仍然在牢牢的控制当中！
It puts the trapeze artist to shame. Look at us, We run a tight rope daily, balancing a pile of books on the head. Baby-carriage, parasol, kitchen chair, still under control. Steady now!
它会使吊秋千的表演者都感到羞愧。每天我们过着崩紧的绳子样的生活，在头脑中堆积如山的书本中寻找平衡。婴儿车，阳伞，厨房讲座，现在仍然在牢牢的控制当中！
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