当前位置: X-MOL 学术Rock Mech. Rock Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Experimental Testing of Ground Reinforced Embankments Under Low-Energy Impact of Rockfall
Rock Mechanics and Rock Engineering ( IF 5.5 ) Pub Date : 2021-07-23 , DOI: 10.1007/s00603-021-02573-1
Liang Lu 1, 2 , Liang Xiao 1, 3 , Zongjian Wang 4 , Tiantian Tang 5 , Katsuhiko Arai 6
Affiliation  

To evaluate the ultimate capacity of the ground reinforced embankments, most of the research have been focused on high levels of impact energy. However, many existing embankments have been impacted by several blocks without collapsing. The residual characteristics and efficiency of post-impact embankments under low-energy impact are researched in this paper. Model tests of two types of embankments are compared to investigate the deformation performance and damage evolution of embankments. A simplified analytical approach, based on the test results and the energy method, is proposed to assess the residual efficiency of the post-impact embankments. Furthermore, the adverse impact conditions are analyzed by numerical simulation. The results show that the damage evolution of the embankments goes through three phases, uphill face compression, downhill face displacement, and collapse. Compared with experimental data, the stability calculation method is proved to be feasible. It is also found that the impact location and inclination of the blocks affect the deformation and stability of the embankments significantly. These points should be beneficial to the design of ground reinforced embankments.



中文翻译:

落石低能量冲击下地基加固路堤的试验测试

为了评估地面加固路堤的最终承载力,大部分研究都集中在高水平的冲击能量上。然而,许多现有的堤防已经受到几个街区的影响而没有倒塌。本文研究了低能量冲击下冲击后路堤的残余特性和效率。通过对两种类型路堤的模型试验进行对比,研究路堤的变形性能和损伤演化。提出了一种基于测试结果和能量方法的简化分析方法来评估冲击后路堤的剩余效率。此外,通过数值模拟分析了不利的冲击条件。结果表明,路堤的破坏演化经历了三个阶段,上坡面压缩、下坡面位移,倒塌。通过与实验数据的对比,证明了该稳定性计算方法是可行的。还发现,块体的撞击位置和倾斜度对路堤的变形和稳定性有显着影响。这些点应有利于地基加固路堤的设计。

更新日期:2021-07-23
down
wechat
bug