The greatly reduced capacity of a single pile resulting from the negative friction leaves the end-bearing pile unsuitable in the backfilling soil.
实例分析表明，由于桩侧负摩阻力的影响，单桩承载力大为降低。产生负摩阻力的土层，不宜采用端承型桩基。
Longitudinal vibration of an integral pile in an uniform soil with end bearing boundary or elastic bottom boundary undergoing vertical harmonic load is theoretically investigated.
分别对均质土中完整端承桩和弹性支承桩在垂直谐和激振力作用下的纵向振动特性进行了研究。
The impedance function of the end bearing pile in stratified soil has been obtained by the method of transfer matrix according to the theory of continuous medium mechanics.
本文根据连续介质力学理论，用传递矩阵法求得分层土端承桩的阻抗函数。
The paper describes the conditions of realizing reasonable pile end grouting; pile end grouting can improve mechanics of single pile bearing capacity and impact analysis of grouting reinforcement.
并阐述了实现合理的桩端注浆条件，桩端注浆提高单桩承载力的机理以及注浆加固效果分析。
The pile-end post-grouting technology can increase the bearing capacity of piles and improve the bearing performance of piles.
桩端后压浆可以提高桩的承载力，改善桩的承载性状。
The interrelated model of the shear wave velocity with the normal value of ultimate lateral resistance(qsik)and ultimate end bearing resistance(qpk)of the soil around the pile is established.
建立了桩周土的极限侧阻力标准值及极限端阻力标准值与剪切波速度的相关模型。
Theoretically the single pile vertical bearing capacity of rock-socketed pile is composed of the frictional resistance, the socketed force and the end-bearing force.
嵌岩桩的单桩竖向承载力理论上应由摩阻力、嵌固力、端承力组成。
This paper mainly discuses how to determine the pile length, place the reinforcing steel bar coop and determine the water - cement ratio in construction of pressure - grouting and end - bearing piles.
本文主要讨论了钻孔压浆桩施工中桩长的确定，钢筋笼子的安放，水灰比的确定等措施。
Problem on the bearing capacity of cast-in-place pile influenced by the deposit at pile end and the mud hanged on pile shaft can be solved by the technique with the post grouting.
灌注桩后压浆技术解决了桩底沉淤和桩身泥皮影响灌注桩承载力的问题，使桩底、桩侧土得到了加固，从而大幅度提高了灌注桩的承载力，降低了桩的沉降量。
Problem on the bearing capacity of cast-in-place pile influenced by the deposit at pile end and the mud hanged on pile shaft can be solved by the technique with the post grouting.
灌注桩后压浆技术解决了桩底沉淤和桩身泥皮影响灌注桩承载力的问题，使桩底、桩侧土得到了加固，从而大幅度提高了灌注桩的承载力，降低了桩的沉降量。
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