受横向动载的空心桩性能研究

The Dynamical Calculation of Laterally Loaded Hollow Pile

应用综合刚度原理和双参数法对桩顶在横向动荷载作用下的实心桩和空心桩进行计算,通过改变截面形状和尺寸分别对相同直径的实心桩与空心桩和相同截面面积的实心桩与空心桩的挠度、弯矩、转角、剪力、土抗力集度进行计算.研究表明:空心桩比实心桩具有许多优点,如空心桩桩顶的挠度和转角较小,空心桩单位体积的承载力高等.

The hollow pile and solid pile are calculated under the lateral dynamic load by using the composite stiffness principle and two-parameter method.By changing the shape and size of the cross-section,this paper calculates the deflection,bending moment,rotation angle,shear,and soil resistance of hollow pile and solid pile with the same diametre and that with the same sectional area.Meanwhile,it makes a table for comparing them.Furthermore,the hollow pile sections are calculated as the deflections of hollow pile and solid pile are similar.It is found out that the hollow pile is more suitable for soil conditions than the solid one.