一种研制的冷沥青乳液混合料的应力应变分布有限元分析

H. K. Shanbara, F. Ruddock, W. Atherton
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引用次数: 11

摘要

冷沥青乳液混合物(cbem)是传统热沥青混合物的一种节能、可持续和经济的替代品,因为生产cbem不需要加热。通过改性沥青混合料来提高柔性路面的性能被认为是有价值的。这是由于不理想的环境条件和重载,将导致传统混合物的性能不满意。使用具有弹性响应的层的经验方法已广泛用于设计这种混合物。目前,快速而强大的设计技术被用于减少柔性路面分析中确定应力、应变和位移的局限性。本文提出了一种简单可行的CBEM设计方法,并讨论了该设计方法的局限性。并介绍了以玻璃纤维为增强材料的表面混合料改性cbem的性能和特点。此外,利用ABAQUS软件进行了路面力学行为和性能预测的三维(3D)有限元分析(FEA)仿真,其中采用了单元类型,模型尺寸和网格划分以达到适当的精度和收敛性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Stresses and Strains Distribution of a Developed Cold Bituminous Emulsion Mixture Using Finite Element Analysis
Cold bitumen emulsion mixtures (CBEMs) offer an energy-efficient, sustainable and costeffective alternative to conventional hot asphalt mixtures, as no heating is required to produce the CBEMs. The enhancement of flexible pavements performance by modifying asphalt mixture has been considered valuable. This is due to the undesirable environmental conditions and heavy loads that will cause unsatisfactory performance of conventional mixtures. Empirical methods using layers with elastic response have been largely used to design such mixtures. Currently fast and powerful design techniques are used to reduce the limitation in determining stresses, strains and displacement in flexible pavements analysis. This research presents a simple and more practicable design procedure of CBEM and discusses limitations of this design. Also, present the properties and characteristics of modified CBEMs for surface course mixture using glass fibre as a reinforcing material. In addition, a three-dimensional (3D) finite element analysis (FEA) simulation for the prediction of pavement mechanical behaviour and performance is carried out using ABAQUS software in which element types, model dimensions and meshing have been taken to achieve appropriate accuracy and convergence.
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