中文摘要：

采用大型有限元软件ADINA对复合土钉支护边坡进行地震响应分析.地震波输入选用常用的EL-Centro波,分析内容包括支护边坡位移、加速度、土钉、锚杆的轴力时程响应.在建立有限元模型时,考虑土体和支护结构相互作用;应用非线性静动力性能的弹塑性M-C模型模拟土体;采用双线形强化模型模拟支护结构;土与支护结构相互作用由接触单元模拟.结果表明复合土钉边坡支护结构比纯土钉边坡支护结构有更好的抗震性能;普通土钉支护最大水平位移发生在边坡顶部,而复合型土钉支护发生在边坡的中上部,尤其是在施加了预应力之后,边坡在地震作用下位移明显减小;土钉和锚杆轴力在地震作用下放大显著,在滑移面附近轴力最大;位移和加速度沿着坡高逐渐增大.

英文摘要：

By using large-scale finite element software ADNIA,the seismic response of the slope supported by composite soil nailing was analyzed,in which the common EL-Centro wave was selected as the input earthquake wave.The analysis included the displacement and acceleration of the supporting slope as well as the time history responses of the axial forces of soil nails and anchors.In the establishment of finite element model,the interaction between soil body and supporting structure was considered.An elastic-plastic M-C model with nonlinear static and dynamic behavior was used to simulate the soil body and a dual linear strengthening model was adopted to simulate the supporting structure.Then the interaction between soil body and supporting structure was simulated with contact element.The results showed that the supporting structure with composite soil nailing slope had better anti-seismic performance than the supporting structure with general soil nailing slope.The maximum horizontal displacement of the latter occurred at the slope top,but that of the former occurred at the slope upper middle.Especially after the imposition of the prestress,the slope displacement under earthquake would reduce significantly,and the axial forces of soil nails and anchors under earthquake would increase significantly.Moreover,the axial forces of soil nails and anchors would reach their maximum values near the slipping surface.The displacement and the acceleration of slope increased with the slope height.