Evaluating permissible subgrade rut depth in pavement design

IF 0.3 Q4 ENGINEERING, GEOLOGICAL
K. Hau, G. McDowell
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引用次数: 3

Abstract

In the design of a pavement, the permissible rut depth and permissible resilient vertical strain at the top of the subgrade at the end of the construction stage (i.e. before the placing of the bituminous layer) are used to select the appropriate thickness of granular material. However, usually the only available data for the subgrade is the resilient modulus, which is estimated from the California Bearing Ratio. This paper examines the application of a new three-surface kinematic hardening model for the subgrade in a finite-element analysis to evaluate the rut depth and resilient vertical strain at the top of the subgrade at the end of the construction stage. The resilient modulus for the subgrade is determined by examining the stress changes at different depths in the subgrade, for different thicknesses of granular material, and applying such stress changes to simulated triaxial samples for 50 cycles to compute the resilient modulus at different depths for input to a layered elastic analysis, in order to...
路面设计中允许路基车辙深度的评定
在路面设计中,根据施工阶段结束时(即铺设沥青层之前)路基顶部的允许车辙深度和允许弹性垂直应变来选择合适的颗粒材料厚度。然而,通常唯一可用的路基数据是弹性模量,这是根据加州承载比估计的。本文研究了一种新的路基三面运动硬化模型在有限元分析中的应用,以评估施工阶段结束时路基顶部的车辙深度和弹性垂直应变。路基的弹性模量是通过检查路基不同深度、不同厚度的颗粒材料的应力变化,并将这种应力变化应用于模拟三轴样品50个循环来计算不同深度的弹性模量,以输入分层弹性分析,从而确定路基的弹性模量。
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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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