CAJ | 학술논문

在大量的试验和数值分析表明，采用小扩展角度的扩底抗拔桩能大幅提高承载力。由于没有对桩身轴力进行量测，仅凭现有的试验成果无法深入认识扩大头的作用机理。主要研究锥形扩底抗拔桩承载力的影响因素，采用数值方法模拟足尺试验，通过控制桩顶位移，研究承载力的关系曲线，确定相关计算参数，对扩大头扩径倍数、扩大头长度、等主要影响因素进行数值分析。
재대량적시험화수치분석표명，채용소확전각도적확저항발장능대폭제고승재력。유우몰유대장신축력진행량측，부빙현유적시험성과무법심입인식확대두적작용궤리。주요연구추형확저항발장승재력적영향인소，채용수치방법모의족척시험，통과공제장정위이，연구승재력적관계곡선，학정상관계산삼수，대확대두확경배수、확대두장도、등주요영향인소진행수치분석。
A large number of tests and numerical analysis shows that the enlarged base of tapered pedestal pile with a small extension angle will improve the bearing capacity substantially. Being lack of the measurement of axial force of pile, it is hard to know the functional mechanism of the enlarged base of tapered pedestal pile with the current testing results. This paper mainly makes a study on the affecting factors of the bearing capacity of the enlarged base of tapered pedestal pile. A numerical analysis is carried out to simulate the full scale test. The bearing capacity relation curve is worked out by a control of the displacement of pile top. The numerical analysis is also given to other main affecting factors including the relating calculating parameters, multiplies of diameter expansion and length of the enlarged foot and so on.