Seismic earth pressure on embankment gravity retaining wall with nonuniform slope

IF 2.5 3区 工程技术 Q2 ENGINEERING, CIVIL
Hong-lue Qu, Deng Yuanyuan, Qindi Hu, H. Xue, Wang Chenxu
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引用次数: 2

Abstract

According to the results of a survey of retaining structures damaged by the Wenchuan earthquake, the damage to gravity retaining walls accounted for 97.1% of the total damage to retaining walls. Among gravity retaining structures, embankment gravity retaining walls with nonuniform slopes are more prone to be disturbed under seismic conditions. However, relatively few studies have been performed to calculate the seismic earth pressure on such structures. In this study, a simplified approach is presented to calculate the seismic earth pressure on embankment gravity retaining walls with nonuniform slopes. In the proposed approach, the equations are derived based on the primary assumptions of the Mononobe–Okabe theory and the limit equilibrium state of the quadrilateral slip soil wedge. To verify the applicability of the proposed approach, a large-scale shaking-table test was conducted to obtain the distribution of the seismic earth pressure, the magnitude of earth pressure resultant force, the resultant force action point, and slip surface of an embankment gravity retaining wall with a nonuniform slope, under various peak ground accelerations. A comparison indicates that the calculated results were in agreement with the experimental results, implying that the proposed approach is valid for calculating the seismic earth pressure on embankment gravity retaining walls with nonuniform slopes.
非均匀边坡路堤重力挡土墙地震土压力研究
根据对汶川地震破坏的挡土墙结构的调查结果,重力式挡土墙的破坏占挡土墙总破坏的97.1%。在重力挡土墙结构中,边坡不均匀的路堤重力挡土墙在地震作用下更容易受到扰动。然而,计算此类结构的地震土压力的研究相对较少。本文提出了一种计算非均匀边坡路堤重力挡土墙地震土压力的简化方法。在该方法中,基于Mononobe-Okabe理论的基本假设和四边形滑坡体的极限平衡状态推导出了方程。为验证该方法的适用性,进行了大型振动台试验,得到了不同峰值地面加速度作用下非均匀坡度路堤重力挡土墙的地震土压力分布、土压力合力大小、合力作用点及滑移面。计算结果与试验结果吻合较好,表明本文方法对非均匀坡度路堤重力挡土墙地震土压力计算是有效的。
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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来源期刊
Geomechanics and Engineering
Geomechanics and Engineering ENGINEERING, CIVIL-ENGINEERING, GEOLOGICAL
CiteScore
5.20
自引率
25.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: The Geomechanics and Engineering aims at opening an easy access to the valuable source of information and providing an excellent publication channel for the global community of researchers in the geomechanics and its applications. Typical subjects covered by the journal include: - Analytical, computational, and experimental multiscale and interaction mechanics- Computational and Theoretical Geomechnics- Foundations- Tunneling- Earth Structures- Site Characterization- Soil-Structure Interactions
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