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Mathematical Problems in Engineering - Volume 2017 2017, Article ID 2050285, 13 pages - https:-doi.org-10.1155-2017-2050285

Research Article

Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi’an, Shaanxi 710038, China

School of Highway, Chang’an University, Xi’an, Shaanxi 710064, China

Shanghai Municipal and Traffic Design Institute Co., Ltd., Shanghai 200030, China

Correspondence should be addressed to Ding Fei

Received 29 September 2016; Accepted 12 December 2016; Published 16 January 2017

Academic Editor: Francesco Pesavento

Copyright © 2017 Ding Fei et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In order to study the mechanical response of cement concrete pavements under impact loading, four types of typical cement concrete pavement structures are investigated experimentally and numerically under an impact load. Full-scale three-dimensional pavement slots are tested under an impact load and are monitored for the mechanical characteristics including the deflection of the pavement surface layer, the strain distribution at the bottom of the slab, and the plastic damage and cracking under the dynamic impact load. Numerical analysis is performed by developing a three-dimensional finite element model and by utilizing a cement concrete damage model. The results show that the calculation results based on the cement concrete damage model are in reasonable agreement with the experimental results based on the three-dimensional test slot experiment. The peak values of stress and strain as monitored by the sensors are analyzed and compared with the numerical results, indicating that the errors of numerical results from the proposed model are mostly within 10%. The rationality of the finite element model is verified, and the model is expected to be a suitable reference for the analysis and design of cement concrete pavements.





Autor: Ding Fei, Yin Yan, Cai Liangcai, Tang Yaohong, and Wang Xuancang

Fuente: https://www.hindawi.com/



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