黄土地区桩底压密灌浆提高灌注桩承载力的试验研究

通过现场埋设有测试元件的试桩静载试验，对黄土地区运用压密灌浆技术提高挖孔灌注桩承载力进行了试验研究。讨论了灌浆方法应用于该地区的一些问题，对桩底灌浆挖孔灌注桩的承载特性进行了分析，以期为该方法在黄土地区中的应用提供参考依据。并与按规范方法确定灌注桩承载力进行了对比分析。

Experimental Study on the Compaction Grouting of Pile Tip in Loess Region

In this paper, the compaction grouting technology which is used to enhance the bearing capability of cast in place piles in a loess region is experimentally studied based on a static test in which some detectors are attached in situ along the test pile. Some problems of the applications of the grouting method in the loess region are also discussed. The bearing capability properties of the cast in place pile of a pile tip compaction grouting are analyzed, so as to provide references for the application of the technology in loess regions. Meanwhile, the bearing capability of the cast in situ pile is compared with that of piles cast according to codes.