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扩底桩在当前工业建筑中得到了越来越广泛的应用。本文对扩底桩承载性能进行了分析研究。结果表明,扩底桩的桩端承载力(kPa)比同直径的直径桩的桩端承载力(kPa)要小;沉降量同扩底端直径有关,在相同荷载作用下,扩底端直径越大,沉降量也越大;随着D/d的增大,荷载传递到桩端的比例逐渐增大,但并不是成比例增大,其增大的比例越来越小;对扩底桩桩端阻力发展分三种状态分别进行了研究,从而对扩底桩桩端承载性状有了更加清晰的认识。
Expanded pile in the current industrial building has been more and more widely used. In this paper, the bearing capacity of expanded pile is analyzed. The results show that the pile bearing capacity (kPa) is smaller than the pile bearing capacity (kPa) of the same diameter pile. The settlement is related to the diameter of the expanding bottom. Under the same load, the bottom diameter The larger the settlement, the greater the settlement. With the increase of D / d, the proportion of load transfer to the pile tip gradually increases, but not increasing proportionally, and its increasing proportion is smaller and smaller. The development of pile tip resistance has been studied separately in three states, so as to have a clearer understanding of the bearing behavior of pile-end pile.