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Numerical analysis of a finite slope improved with stone columns under the effect of earthquake force
Natural Hazards ( IF 3.3 ) Pub Date : 2021-01-02 , DOI: 10.1007/s11069-020-04456-0
Cenk Cuma Çadır , Mustafa Vekli , Ferhat Şahinkaya

Slope stability is one of the most important issues of geotechnical engineering. Significant slope failures (landslides), which result from earthquakes, can cause considerable losses of life and property. Hence, it is required that a slope keeps its stability under the effect of earthquake forces. This study includes the numerical analysis (pseudo-static) of slopes improved with stone columns under the effect of earthquake force. In the analysis conducted using the finite element program, the safety factor was determined by performing the safety analysis of the slopes modeled (different s/D (2, 2.5, 3) ratios, c/(γ.H) (0.19, 0.14, etc.) ratios, and slope angles (β: 20°, 25°)) without the effect of earthquake force and under the effect of earthquake force. As a result of this study, it was observed that the slopes improved with stone columns had a higher factor of safety compared to the slopes without stone columns both under the effect of earthquake force and without the effect of earthquake force. In the study, the safety factor of the slopes improved with stone columns under the effect of earthquake force increased up to 1.24 times in comparison with the slopes not improved with stone columns. Furthermore, under the effect of earthquake force, a 22.50% decrease was observed in the horizontal displacement of the slope model supported with stone columns compared to the slopes without stone columns. The study determined that the stability of clay slopes reinforced with stone columns under the effect of earthquake force increased. In light of the data obtained from this study, it is thought that it may be important in terms of creating preliminary information in land applications that require quick and economical solutions. Moreover, it is thought that the study will shed light on other studies to be carried out since it is a basic study on the numerical investigation of finite clay slopes reinforced with stone columns under the effect of earthquake force (pseudo-static).



中文翻译:

地震作用下石柱改善有限坡度的数值分析

边坡稳定性是岩土工程中最重要的问题之一。地震造成的严重边坡破坏(滑坡)可能会导致生命和财产损失。因此,要求斜坡在地震作用下保持其稳定性。这项研究包括在地震力作用下用石柱改善边坡的数值分析(拟静力)。在使用有限元程序进行的分析中,通过对建模的边坡进行安全分析(不同s / D(2,2.5,3)比率,c /(γ.H)(0.19,0.14,比率和倾斜角(β:20°,25°)),而不受地震力的影响,而在地震力的作用下。这项研究的结果,可以看出,无论是在地震作用力作用下还是在没有地震作用力作用下,石柱改善的边坡比无石柱的边坡具有更高的安全系数。在研究中,与没有石柱改善的边坡相比,在地震力作用下石柱改善的边坡安全系数提高了1.24倍。此外,在地震力的作用下,与没有石柱的边坡相比,有石柱的边坡模型的水平位移降低了22.50%。研究确定,在地震力作用下,石柱加固的土质边坡的稳定性增加。根据这项研究获得的数据,人们认为,在需要快速,经济解决方案的土地应用中创建初步信息方面可能很重要。而且,由于它是在地震力(伪静力)作用下用石柱加固有限黏土边坡的数值研究的基础研究,因此认为该研究将为其他研究提供参考。

更新日期:2021-01-03
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