Análise Numérica da Estabilidade de Taludes Empregando Estacas Como Elemento de Reforço

Paula Tannús Resende
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Abstract

RESUMO: Neste artigo analisa-se a estabilidade de taludes reforçados com estacas considerando a variabilidade dos parâmetros da geometria (comprimento e espaçamento) e posição das estacas, no intuito de avaliar o comportamento e a variação do fator de segurança com a implementação desse reforço em diferentes situações. Para tanto, foram empregadas ferramentas computacionais nas análises, por meio dos softwares Slide e RSpile que utilizam como base o método do equilíbrio limite para verificar a estabilidade de talude e as curvas p-y para análise das estacas, respectivamente. Ao modelar a introdução de estacas no talude, notou-se que esta prática aumenta a estabilidade do mesmo, além de se apresentar como uma alternativa tecnicamente viável ABSTRACT: This article analyzes the stability of pile-reinforced slopes considering the variability of the geometry parameters (length and spacing) and pile position, in order to evaluate the behavior and safety factor variation with the implementation of this reinforcement in different situations. With this aim, computational tools were employed in the analyzes, by the use of Slide and RSpile software, which use the limit equilibrium method to verify slope stability and p-y curves for pile analysis, respectively. When modeling the introduction of piles in the slope, it was noted that this practice increases the stability of the slope, and presents itself as a technically viable alternative for the slope to reach a normatively adequate safety factor. It was also observed that the optimal location for the pile in the analyzed cases is close to the crest slope and that the greater the spacing between piles, the less the effect in the improvement of the slope’s stability. It is concluded that the longer the pile length, the greater the slope stability, however, in this case, from 10 m of length, the increase in the safety factor was not very relevant.
以桩为加固单元的边坡稳定性数值分析
摘要:本文分析了加桩边坡的稳定性,考虑了几何参数(长度和间距)和桩位置的变异性,以评估加桩在不同情况下的性能和安全系数的变化。为此,采用计算工具进行分析,使用Slide和RSpile软件,分别以极限平衡法验证边坡稳定性和p-y曲线进行桩分析。建模时引入的木桩上,就能发现这种行为增加的稳定性一样,除了执行选择技术上可行的文摘:这篇文章analyzes桩-reinforced斜坡的稳定性考虑的variability几何parameters(长度和间距)和桩的位置,以便evaluate实现的行为和安全因素变化的钢筋在不同的情况下。戴上目标,计算工具,维employed analyzes,由使用的幻灯片和RSpile软件,它使用的极限平衡法进行边坡稳定和p - y曲线是桩分析,分别。在模拟将桩引入斜坡时,人们注意到,这种做法提高了斜坡的稳定性,并且本身作为一种技术上可行的替代方法,使斜坡达到规范上适当的安全系数。这是有趣的观察,桩的最优位置analyzed结婚是接近山顶别墅,桩之间的间距越大,影响越小的改进别墅’s稳定。结论是桩长越长,斜坡稳定性越高,但在这种情况下,从10米长开始,安全系数的增加不是很相关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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