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Location of Failure Plane within Narrow GRS Wall Systems


The design of a Geosynthetic Reinforced Soil (GRS) wall for internal stability requires computing the reinforcementrnembedment length against pullout failure. The location of failure plane is important input for this design. The currentrnFHWA design guidelines assume the location of failure plane based on Rankine theory. While this assumption holds truernfor conventional walls it is unconservative for GRS walls under constrained spaces, also known as 'narrow GRS walls'.rnThe observations from centrifuge tests suggest that the inclination angle of failure plane is less than that one calculatedrnbased on Rankine theory for narrow GRS walls. This paper presents a limit equilibrium study to accurately locate failurernplanes within narrow GRS walls. The critical failure planes within narrow GRS walls are searched using Spencer'srnmethod with a function of noncircular failure plane. The results predicted from limit equilibrium analyses shows a goodrnagreement with the experimental data from centrifuge tests conducted on narrow walls. The results indicate that criticalrnfailure plane is bilinear: the failure surface being formed partially through the reinforced soil and partially along therninterface between the GRS and stable wall faces. Finally, the effect of wall aspect ratio on the inclination angle of therncritical failure plane is computed and depicted in a chart for design purposes.......

【作者名称】: K-H Yang, R. Gupta, J.G. Zornberg
【作者单位】: Dept.of Civil Architectural and Environmental Engineering, Univ.of Texas at Austin, TX, USA, Dept.of Civil Architectural and Environmental Engineering, Univ.of Texas at Austin, TX, USA, Dept. of Civil Architectural and Environmental Engineering, Univ. of Texas at Austin, TX, USA
【关 键 词】: Location of Failure Plane within Narrow GRS Wall Systems
【会议名称】: Geosynthetics 2009
【期刊论文数据库】: [DBS_Articles_01]
【期刊论文编号】: 101,629,255
【摘要长度】: 1,405
【会议地点】: Salt Lake City, UT(US)
【会议组织】: Dept.of Civil Architectural and Environmental Engineering, Univ.of Texas at Austin, TX, USA;Dept.of Civil Architectural and Environmental Engineering, Univ.of Texas at Austin, TX, USA;Dept. of Civil Architectural and Environmental Engineering, Univ. of Texas at Austin, TX, USA;
【会议时间】: 2009
【上篇论文】: 外文会议 - Development of a new 3D solid-fluid coupled numerical method using DDA with SPH
【下篇论文】: 外文会议 - Performance of a prestressed concrete bridge loaded to failure

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