O-Cell桩基承载力试验法在大直径超长钻孔嵌岩桩的应用

摘要

结合某桥梁大直径超长钻孔嵌岩桩承载力测试的实践,介绍了O-Cell桩基承载力试验原理和单桩极限承载力确定方法,对于荷载箱位置的选取及超长嵌岩桩成孔成桩工艺进行分析并提出自己的看法,为类似工程提供参考.%Based on the cumulative evidence of O-cell load test for rock-socket bored piles with large diameter and extra length for a bridge project, this paper introduces the theory of O-cell load test and the method of confirming the load. The positioning of loading equipment and the technology of boring and casting of long length rock-socket bored pile are also discussed and some views of the author are proposed to provide reference for similar projects.