论文部分内容阅读
纽马克(Newmark)关于在地震荷载作用下计算永久位移的理论已和传统的极限平衡分析相结合,用于计算岩石楔形体的位移.由交叉面形成的岩石楔形体在上部边坡表面中可能有张裂隙存在,但也可能没有.由于楔形体的静力分析方法可以在文献资料中找到,因此,这里仅对抗震问题从理论上进行较为详细地阐述.根据加速度历时关系的输入数据编制一套计算程序,用以计算位移.该程序可以把交叉面和张裂隙平面上的水压力考虑进去.除了静超载荷重之外,还考虑到可能存在的岩石锚筋的影响.该程序可用于计算传统的静力安全系数、剩余抗滑阻力、临界加速度、激振力、随时间变化的相对速度和累积位移.
Newmark’s theory of calculating permanent displacement under seismic loads has been combined with traditional limit equilibrium analysis to calculate the displacement of rock wedges. The rock wedge formed by the intersections may be in the upper slope surface. There are cracks, but there may be no. Because the method of static analysis of the wedge can be found in the literature, therefore, only the anti-seismic problem is elaborated theoretically in detail. According to the input data of the acceleration duration relationship, a The calculation program is used to calculate the displacement. This program can take into account the water pressure on the plane of the plane of intersection and the plane of the fracture. In addition to the static overburden weight, the influence of possible rock anchors is also taken into account. This program can be used to calculate Traditional static safety factor, residual anti-sliding resistance, critical acceleration, excitation force, relative velocity and cumulative displacement over time.