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本文通过对相近地质条件下同一桩基工程中施工工艺分别为静压沉管和水冲自引孔静压沉管管桩单桩竖向抗压静载检测结果对比、分析,以及对检测承载力不满足设计要求管桩进行桩底、桩侧高压注浆,注浆达到龄期后再进行抗压静载检测,并对检测结果进行分析、与注浆前结果进行对比,分析了水冲自引孔静压管桩静载不合格原因,提出水冲自引孔静压管桩施工时应注意的一些问题。
In this paper, the same geological conditions under the same pile foundation construction process are static pressure tube and water punching self-piercing static pressure pipe sink pile vertical compression static load test results comparison and analysis, as well as the test load bearing The force does not meet the design requirements of pile pipe pile bottom, pile high pressure grouting, grouting to reach the age after compression static load test, and the test results were analyzed, compared with the results before grouting, analysis of the red water The reasons of unqualified static load of hydrostatic pipe pile self-priming pipe, and some problems that should be noticed when constructing self-priming static pressure pipe pile.