This paper expounds the application of the cast - in - place pile for its function and grouting technique in the foundation project of bridge construction 摘要通过对钻孔灌注桩地基处理的工作机理及桩端压浆技术在桥梁建设地基工程中的应用。
Abstract : at present , the reflected wave method is the most suitable and commonly used method in detecting the quality of rigid precast and cast - in - place piles 文摘:反射波法是目前检测预制桩和灌注桩等刚性基桩质量最适合、最常用的方法。
Dx pile is a new cast - in - place pile which can improve the vertical ultimate bearing capacity of single pile by developing the capacity of bearing enlarging disk in the pile 摘要dx桩是通过发挥桩身中承力扩大盘的承载力，以达到提高单桩竖向承载力的一种新型钻孔灌注桩。
In order to have more load capacity in drilling pile , size of drilling holes may be increased , or enlarged the end of pile by explosion , or driving the cast - in - place pile twice 为了提高钻孔桩承载能力,可在钻孔时孔头扩大,也可以采用爆破法使桩头扩大,现浇混凝土桩二次复打也可提高承载能力
The cast - in - place pile has become the major foundation form to road and bridge construction for the feasible practice of various geological structure , load bearing and strong resistance to earthquake 钻孔灌注桩基础能适应于不同地质条件、荷载情况，抗震能力强，因此成为了公路桥梁的主要基础形式。
Since the pebble structure is of big pellet easy to be permeated ant it is difficult to smash and drill , the appliance with big diameter and deep cast - in - place pile has been greatly restricted 卵石地基具有颗粒大、透水性强、进尺和破碎困难、容易垮孔等困难，限制了大直径深孔钻孔灌注桩在其中的应用。
The technology of grouting after pile driving at the bottom of pile makes up for some inherent defects caused by the bore cast - in - place pile protecting bore wall with mud and thereby it enhances the bearing capacity of pile greatly 泥浆护壁钻孔灌注有一定的缺陷，桩底后压浆技术有效地弥补了这些缺陷，并能大幅度提高承载力。
Main characteristics of bearing capacity of cast - in - place pile under vertical load have been expounded by introduction to engineering course and analysis of experiment result . and application of test pile in concrete design has been probed 摘要通过对工程试桩过程介绍及对结果的分析，总结了竖向荷载作用下嵌岩灌注桩承载力的主要特点，并对试桩在具体设计中的应用进行了探讨。
Based on four project cases of vibro casing cast - in - place pile in silty sand foundation , the liquefaction of sand and its consequent pile breaking are analyzed , and suggestions on how to adopt values of the design parameters of a single pile are presented 摘要以4个在粉砂地基中均采用振动沉管灌注桩的工程为例，分析了施工中砂土的液化及由此引起的断桩，并对单桩设计参数的取值提出了建议。
Some means of ground treatment are discussed . all kinds of ground treatment methods are analysed . they are the deeping pile , prestressed tubular piles , diving casing cast - in - place pile , which are often used in shao xing . some problems about design and constrction are proposed 另外，对绍兴城区常用的各种地基形式如：水泥搅拌法、管桩、沉管灌注桩等进行了分析，提出了在设计和施工中应注意的问题。
