GEOTECHNICAL ANALYSIS OF A RETAINING WALL IN WEAK ROCK

IF 0.3 Q4 ENGINEERING, GEOLOGICAL
D. Richards, C. Clayton, W. Powrie, T. Hayward
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引用次数: 10

Abstract

The determination of realistic values of stiffness and in-situ horizontal stress is challenging in softer materials, but in weak rocks where discontinuities are typically present it is particularly difficult. Such difficulties were encountered during the site investigation for the construction of the A444 Coventry North-South road retaining structures, where the in-situ lateral stress and stiffness profiles of the weathered sandstones and mudstone were determined using a range of investigation techniques. A section of retaining wall incorporating a stabilising base was monitored during construction, and further investigation of the weak rock was undertaken using geophysical techniques. Aspects of the observed performance of the retaining wall during construction were analysed using a continuum finite-element method to provide a computed stiffness and initial horizontal stress profile. The results from these analyses are compared with the site characterisation data.
软弱岩体挡土墙的岩土力学分析
在较软的材料中,确定刚度和原位水平应力的真实值是具有挑战性的,而在通常存在不连续结构的软弱岩石中,这尤其困难。在考文垂A444南北公路挡土结构施工的现场调查中遇到了这些困难,在现场调查中,使用一系列调查技术确定了风化砂岩和泥岩的原位横向应力和刚度剖面。在施工过程中监测了一段包含稳定基础的挡土墙,并使用地球物理技术对软弱岩石进行了进一步调查。在施工过程中观察到的挡土墙性能方面使用连续体有限元方法进行了分析,以提供计算刚度和初始水平应力剖面。这些分析结果与现场特征数据进行了比较。
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来源期刊
Geotechnical Engineering
Geotechnical Engineering ENGINEERING, GEOLOGICAL-
CiteScore
0.50
自引率
0.00%
发文量
0
期刊介绍: The objectives of the Association shall be the promotion of co-operation among geotechnical societies in SE Asia; and the assistance to member societies who have limited number of members. Now there is only one combined web titled: AGSSEA-SEAGS. SEAGS & AGSSEA encourage the submission of scholarly and practice-oriented articles to its journal. The journal is published quarterly. Both sponsors of the journal, the Southeast Asian Geotechnical Society and the Association of Geotechnical Societies in Southeast Asia, promote the ideals and goals of the International Society of Soil Mechanics and Geotechhnical Engineering in fostering communications, developing insights and enabling the advancement of the geotechnical engineering discipline.
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