文献类型：期刊文献

中文题名：基于性能的组合边坡加固设计方法研究

英文题名：RESEARCH ON DESIGN METHOD OF SLOPE REINFORCED BY PILE-ANCHOR COMBINATION

作者：陶连金[1];文虎[1];贾志波[1];边金[2];张海祥[1]

机构：[1]北京工业大学城市与工程安全减灾省部共建教育部重点实验室,北京100124;[2]广东海洋大学海洋工程学院,湛江524008

年份：2022

卷号：30

期号：5

起止页码：1620

中文期刊名：工程地质学报

外文期刊名：Journal of Engineering Geology

收录：CSTPCD、、CSCD2021_2022、北大核心、CSCD、北大核心2020

基金：国家重点研发计划(资助号:2019YFC1509704);国家自然科学基金(资助号:41877218).

语种：中文

中文关键词：边坡;性能设计;边坡加固;地震荷载

外文关键词：Slope;Performance design;Slope reinforcement;Seismic load

中文摘要：锚索-抗滑桩组合结构是高大边坡加固的主要措施。加固设计时,传统的安全系数不能考虑地震波频谱特性的影响。为了准确的评价边坡的稳定性,开展性能设计方法的研究。基于极限分析法,推导了抗滑桩位移公式。在易损性的框架下对比了远、近场地震波的差异。结果表明:(1)将结构非线性模型引入到Newmark法可以实现抗滑力的实时更新。指数模型的评估结果更保守。(2)考虑到地震荷载存在较大的离散性,基于性能的设计方法更具合理性。易损性曲线可以用来定量分析边坡的失稳概率。(3)边坡的破坏状态与地震强度和地震动类型有关。当地震强度较低时,失效模式以轻微损坏和中等损坏为主。随地震强度增大,边坡更易发生严重破坏。近场脉冲地震具有能量大、冲击强的特点,更容易造成边坡的失稳。

外文摘要：The combined structure of anchor cables and stabilizing piles is the main measure for slope reinforcement.In reinforcement design,the traditional safety factor cannot reflect the influence of seismic wave types.This paper aims to accurately evaluate the stability of the slope and carries out the research on the performance design method.Based on the limit analysis method,the displacement formula of stabilizing pile is derived.The difference between far and near field seismic waves is compared under the framework of vulnerability.The results show that:(1)Introducing the nonlinear model into the Newmark method can realize the real-time update of the anti-sliding force.(2)Considering the randomness of seismic loads,the performance-based design method is more reasonable.The fragility curve can be used to quantitatively evaluate the failure probability of the slope.(3)The failure state of the slope is related to the earthquake intensity and the type of ground motion.When the earthquake intensity is low,the probability of minor damage and moderate damage is greater.With the increase of earthquake intensity,the slope is more prone to serious damage.Near-field earthquakes have the characteristics of high energy and strong impact,which are more likely to cause slope instability.