CAJ | 학술논문

根据路基荷载面积较大、布桩均匀的特点，利用介质力学对称面剪应力为零的原理，简化刚性桩复合路基计算模型。通过零摩阻区上下段桩间土压缩量分别与桩头及桩端刺入量的相等关系，桩头与垫层、桩端与持力层的约束关系，可以求解零摩阻区(或中性点)及桩头桩端的桩土相对位移，进而计算路基沉降、桩侧摩阻及桩体轴力分布。在路基稳定验算中，把滑动单元荷载扣掉滑面处桩体轴力，并按弹性地基梁法确定桩体水平抗力以符合其弯断破坏形式。
근거로기하재면적교대、포장균균적특점，이용개질역학대칭면전응력위령적원리，간화강성장복합로기계산모형。통과령마조구상하단장간토압축량분별여장두급장단자입량적상등관계，장두여점층、장단여지력층적약속관계，가이구해령마조구(혹중성점)급장두장단적장토상대위이，진이계산로기침강、장측마조급장체축력분포。재로기은정험산중，파활동단원하재구도활면처장체축력，병안탄성지기량법학정장체수평항력이부합기만단파배형식。
Based on the features of large load area and even pile distribution, the calculating model of rigid pile compos-ite subgrade is simplified by the continuum mechanics principle about zero shear stress in symmetric plane. Through the equality relations between compressive deformation of soil between upper pile and lower pile in the zero frictional resist-ance area and penetration pile top and pile end and the constraint relations between pile top and bedding and between pile end and bearing layer, the pile-soil relative displacements in the zero frictional resistance area ( or neutral point) and on the pile top and at the top end may be worked out and then the subgrade settlement, the pile frictional resistance and the axial force distribution of pile body can be worked out. in the stability checking of the subgrade, the axial force of pile body at the sliding surface shall be deducted from the load of sliding unit, and horizontal resistance of pile body shall be determined according to elastic foundation beam method to meet the curved breaking mode.