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随着各类重要建筑物及构筑物的大量兴建,采用天然地基上的浅基础已满足不了上部结构和生产使用对地基基础的要求。由于桩基础具有承载力大、变形量小、变形速率缓慢及施工速度较快等优点而得到了广泛的应用。在桩基设计中的一个关键问题,就是要正确确定单桩的竖向容许承载力。为了使拉(基)能正常、安全地传递荷载,必须保证桩身材料强度及地基土对桩的支承力不受破坏。
With the large-scale construction of various types of important buildings and structures, the use of shallow foundations on natural foundations has not met the requirements of superstructures and production use of foundations. The pile foundation has been widely used due to its advantages of large bearing capacity, small deformation, slow deformation rate, and quick construction speed. A key issue in the design of pile foundations is to correctly determine the vertical allowable bearing capacity of a single pile. In order for the pull (base) to transmit the load normally and safely, it must be ensured that the material strength of the pile body and the supporting force of the foundation soil to the pile are not damaged.