Rutting Resistance of Asphalt Pavement Mixes by Finite Element Modelling and Optimisation  

作　　者：Chau Phuong Ngo Van Bac Nguyen Thanh Phong Nguyen Ngoc Bay Pham Van Phuc Le Van Hung Nguyen 

机构地区：[1]Faculty of Civil Engineering,University of Transport and Communications,Campus in Ho Chi Minh City,Vietnam [2]College of Engineering and Technology,University of Derby,Derby,United Kingdom

出　　处：《Journal of Construction Research》2019年第2期1-7,共7页建筑研究（英文）

基　　金：This study is part of the FIRST project‘The development of numerical simulation and optimization technologies for optimal performance of concrete asphalt pavements taking into account the traffic and climate conditions of Vietnam’(35/FIRST/1a/UTC).We acknowledge FIRST Project,Ministry of Science and Technology,Vietnam,for sponsoring this project。

摘　　要：Asphalt pavement rtting is a major safety concem and is one of the main distress modes of asphalt pavement.Research into asphalt pavement mixes that provide strong resistance for nutting is considered of great significance as it can help provide extended pavement life and significant cost savings in pavement maintenance and rehabilitation.The objectives of this study are to develop numernical models to investigate the ntting of asphalt concrete pavements and to find optimal design of asphalt pave-ment mix for nutting resistance.Three-dimensional Finite Element mod-els were first developed to simulate both the axial compression and wheel track testing in which a visco elastic-plastic material model was used to predict the ntting of the asphalt concrete pavements.A strain hardening creep model with the material parameters developed from experimental testing was employed to model the time-dependent characteristics of the asphalt concrete pavements.The results were validated against the pre-vious experimental wheel track test results of different pavement mixes.Finally,optimisation techniques using the Design Of Experiments method were applied to the simulation rutting results by varying creep parameters to identify their effects on rutting resistance in order to obtain an optimal asphalt pavements mixes.The results of this paper clearly demonstrate an efficient and effective experimental-numerical method and tool set towards optimal design for asphalt concrete pavements for rutting resis-tance.

关 键 词：Visco-elastic-plastic CREEP Asphalt pavement RUTTING Wheel track testing Finite Element modelling Design of experiments Optimisation 

分 类 号：K83[历史地理—历史学]