新型预应力锚拉式桩板墙的弹性约束地基系数法

预应力锚拉式桩板墙是在桩板墙及锚拉抗滑桩基础上发展起来的一种新型文档结构。基于结构矩阵方法，结合工作特点，考虑了锚索的弹性约束、填土土压力随位移的变化关系、锁口处位移和内力的连续条件，计入了桩锚固段变形对桩位移和内力的影响，分别导出了锚固段及受荷段的刚度矩阵，编制了相应的计算程序，计算了墙面桩的位移、弯矩、锚固段应力及应变、锚索拉力等。所得结果与其他方法相比，有较好的规律性和可比性，可供相关工程参考和借鉴。

SUBGRADE REACTION COEFFICIENT METHOD OF NEW-STYLE PRESTRESSED ANCHOR SHEET-PILE RETAINING WALL WITH ELASTIC RESTRAINT

Based on sheet-pile retaining wall and anchored anti-slide pile, the prestressed anchor sheet-pile is developed as a new type of retaining structures. On the basis of structure matrix method , combined with engineering characteristics, and with consideration of elastic restraint of anchorage cables, the relationships of earth pressure along with displacement, continuous conditions of displacement and internal force at preliminary shaft, and effect of anchorage part deformation on displacement of piles, stiffness matrixes of anchorage part and bearing part are established, respectively. Displacements and moments of metope pile, stresses and strains of anchorage part, and tension forces of anchor cables are all calculated by using a corresponding program. The calculated results have preferable regularity and agree with those of other methods, and this may be referenced in other related engineering projects.