钻孔灌注桩后压浆作用机理及施工技术控制

摘要

对钻孔灌注桩后压浆提高桩基承载力的机理进行了分析,研究了后压浆的效果,详细介绍了桩端后压浆施工工艺,针对后压浆施工中出现的问题,提出了具体的处理措施,以推广后压浆施工工艺的应用.%r: The paper analyzes principles of back-grouting technique for broach-douche peg to improve pile foundation' s loading capacity, it also studies effects of back-grouting and introduces detailedly the hack-grouting for pile top technique. Aiming at problems in the process of back-grouting construction, the paper also proposes specific handling measures, so as to popularize application of the technique.