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本文简单介绍了钉形水泥土双向搅拌桩的形成及其特点,通过大量的桩身标准贯入试验和室内无侧限抗压强度试验,建立了桩身标准贯入击数与桩身无侧限抗压强度以及桩体分段深度的数学关系式,同时对钉形水泥土双向搅拌桩桩身强度不一致的现象进行了深入分析,对桩身强度检测项目和方法进行了深入探讨,并初步确定了武汉新区桩身强度检测的项目和方法。提出采用加权平均值作为桩身强度设计和检测的标准更为妥当。
In this paper, the formation and characteristics of spike cement-soil two-way mixing piles are briefly introduced. Through a large number of standard penetration tests of pile body and unconfined compressive strength tests indoors, Limit compressive strength and the depth of pile segment mathematical relationship, at the same time, the phenomenon of inconsistent strength of the spar-shaped cement-soil two-way mixing pile body is analyzed in depth, and the pile strength test items and methods are discussed in depth, The items and methods of pile strength testing in Wuhan New Area were confirmed. It is more appropriate to adopt the weighted average as the standard for the design and testing of pile strength.