To clarify the feasibility of BFRP (basalt fiber reinforced plastics) anchors instead of steel anchors in the seismic application of slopes under different vibration strengths, a series of shaking table tests were carried out to strengthen the slope using BFRP anchors and steel anchors, respectively. By studying the dynamic response recorded in the slope model and the observed experimental phenomena, the acceleration dynamic response and displacement spectrum dynamic response of the two slope models were analyzed. The test results show that the deformation stage of the slope reinforced by the two types of anchors is basically the same during the test, that is, elastic, plastic (potential sliding surface and plastic strengthening), and failure stages, respectively. The slope is in the elastic stage before the 0.2 g seismic wave, and it gradually enters the plastic stage after the 0.4 g seismic wave. However, the peak acceleration and displacement of the slope reinforced by steel anchors are greater than those of the slope reinforced by BFRP anchors under the same working conditions of seismic waves. In addition, we found that the acceleration response spectrum distribution curve of each measuring point in the short period has an obvious amplification effect along the elevation, and its predominant period has a forward migration phenomenon with the increase of the height of the measuring point, which also indicates that the higher frequency seismic wave has a greater impact on the top of the slope. The BFRP anchors, as a kind of flexible structure supporting slope, can effectively reduce the impact of seismic waves on the slope and attenuate seismic waves to a certain extent compared with steel anchors. Furthermore, the BFRP anchors can be deformed in coordination with the slope, which can improve the overall working performance of the slope, especially limit the dynamic response of the middle and lower slopes. These results can provide a theoretical guide for the seismic design of BFRP anchors for high slopes.

中文翻译：

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BRFP新型锚索材料在高边坡抗震中的应用

为了阐明在不同振动强度下的边坡地震应用中，BFRP（玄武岩纤维增强塑料）锚固代替钢锚固的可行性，分别进行了一系列振动台试验，分别使用BFRP锚固和钢锚固来加固边坡。通过研究边坡模型中记录的动力响应和观察到的实验现象，分析了两种边坡模型的加速度动力响应和位移谱动力响应。试验结果表明，在试验过程中，两种锚固加固的边坡的变形阶段基本相同，分别是弹性阶段，塑性阶段（潜在滑动面和塑性加固阶段）和破坏阶段。斜率在0.2 g地震波之前处于弹性阶段，在0.4 g地震波作用下逐渐进入塑性阶段。然而，在相同的地震波工作条件下，钢锚加固的斜坡的峰值加速度和位移大于BFRP锚加固的斜坡的峰值加速度和位移。另外，我们发现，在短时间内，每个测量点的加速度响应谱分布曲线沿高程都有明显的放大作用，并且随着测量点高度的增加，其主要周期都有向前迁移的现象，也表明较高频率的地震波对斜坡顶部的影响更大。BFRP锚作为一种柔性结构支撑边坡，与钢锚相比，可以有效减少地震波对边坡的影响，并在一定程度上使地震波衰减。此外，BFRP锚可以与边坡配合变形，从而可以改善边坡的整体工作性能，特别是限制了中低边坡的动力响应。这些结果可为高边坡BFRP锚杆的抗震设计提供理论指导。