When the load on pile top is small, the later friction undertake mainly the load. With the increase of load on pile top, the resistance of pile tip develops gradually.
桩端力发挥的程度与桩顶荷载的大小相关，桩顶压力较小时，桩顶荷载主要由桩侧摩阻力承担，随桩顶压力的增大，桩端力将逐渐发挥。
The seismic load is input at the tip of the pile.
地震波的输入采用桩尖处输入。
The seismic load is input at the tip of the pile.
地震波的输入采用桩尖处输入。
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