CAJ | 학술논문

针对地面堆载范围与桩径对桩侧摩阻力特性的影响，采用有限元软件进行数值模拟，研究结果表明：影响桩侧摩阻力特性的堆载范围存在一个界限值，当堆载范围小于此值时，桩身轴力和摩阻力随着堆载范围的增大而增大，但是增大幅度逐渐减小；当地面堆载范围大于此界限值时，桩身轴力与桩身侧摩阻力值趋于稳定，在界限值堆载范围下，桩身轴力随着桩径增大而增大，桩身摩阻力值和桩径大小成负相关关系，但不同桩径的中性点位置相同。
침대지면퇴재범위여장경대장측마조력특성적영향，채용유한원연건진행수치모의，연구결과표명：영향장측마조력특성적퇴재범위존재일개계한치，당퇴재범위소우차치시，장신축력화마조력수착퇴재범위적증대이증대，단시증대폭도축점감소；당지면퇴재범위대우차계한치시，장신축력여장신측마조력치추우은정，재계한치퇴재범위하，장신축력수착장경증대이증대，장신마조력치화장경대소성부상관관계，단불동장경적중성점위치상동。
The influences of heap load range on a ground and the diameter of pile on skin friction characteristics are simulated by finite element software. It is pointed out that a critical value exists for the heap load range which affects skin friction characteristics of pile,when the heap load range is less than the value,pile axial force and friction resistance increases as the heap load range,but increases deputy degree decreases,the pile axial force and side frictional resistance value tends to be stable when heap load range on a ground is greater than the value. Under the criti-cal heap load range,the axial force increases with the pile diameter while there is a negative correlation relationship between the change value of the pile friction resistance and the pile diameter,but neutral position of each pile is the same.