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夯扩桩及载体桩均属于摩擦端承桩,选择合适的持力层并保证夯扩头及载体质量尤为关键。本文通过对西安市渭河及其支流冲积阶地和黄土台塬共6个工程实例的简要分析,说明夯扩桩和载体桩在西安黄土地区有广泛的应用前景,同时也总结了有关两类桩基施工及检测中应该注意的有关问题及相关工程经验,并针对某一实例中不同夯扩头质量对应不同单桩竖向抗压极限承载力的情况,结合静载试验成果和低应变桩身完整性曲线作出了简要的分析,以期对今后的设计应用及施工控制有所帮助。
Both the rammed-expanded pile and the carrier pile belong to the friction bearing pile, and it is particularly crucial to select the appropriate bearing layer and ensure the rammer head and the quality of the carrier. In this paper, a brief analysis of a total of 6 engineering cases in Xi’an Weihe River and its tributary alluvial terraces and the Loess Plateau shows that the rammed expanded piles and the carrier piles have a wide range of application prospects in the loess area of Xi’an. Meanwhile, Construction and testing should pay attention to the relevant issues and related engineering experience, and for an example of different ram extension head corresponding to different vertical compressive ultimate bearing capacity of the pile, combined with static load test results and low strain pile body integrity Sex curve made a brief analysis, with a view to the future design and application of construction control help.