后压浆技术在央视新台址主楼基础桩中的应用

摘要

Because of the advantages of simple construction, large bearing capacity increases,the post grouting technology has been widely used. With the practical project, the paper introduces the field test study of grouting in different length of bored pile,analyzes the characteristics of bearing deformation. The application of post grouting technology is successful in practical project.%灌注桩后压浆技术以其施工简便,承载力提高幅度大的特点,得到普遍应用.通过实际项目,对灌注桩不同桩长后注浆的现场试验研究,分析其承载变形特性,并在工程实践应用中得到成功.