DataVXRoad Materials and Pavement DesignPaper
journal article·2022-12-02

Time-domain elasto-dynamic model of a transversely isotropic, layered road structure system with rigid substratum under a FWD load

Junhui Zhang, Haishan Fan, Shiping Zhang, Jie Liu, Jianlong Zheng

Road Materials and Pavement Design· Volume 23· Issue 12
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Source abstract

Abstract

In this paper, the time-domain elasto-dynamic model of a transversely isotropic, layered road structure system resting on rigid bedrock under a falling weight deflectometer (FWD) load is proposed by using the Laplace-Hankel transformation, and developing an improved propagator matrix method (PMM) with less calculation cost, higher calculation accuracy and better numerical stability. The improved model greatly avoids the problem of data overflow and maintains the computational efficiency of PMM. The present model is then verified by comparing with the corresponding FEM results. A parametric analysis is finally performed to discuss the effects of material anisotropy and rigid substratum on dynamic response of a road system, which is meaningful for design and practice of road engineering with modulus back-calculation.
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Research context

OpenAlex topics: Geotechnical Engineering and Underground Structures · Structural Health Monitoring Techniques · Landslides and related hazards

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

National Engineering Laboratory of Highway Maintenance Technology and Hunan International Scientific and Technological Innovation Cooperation Base of Advanced Construction and Maintenance Technology of Highway, School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha, People’s Republic of China

School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha, People’s Republic of China

Funding

National Natural Science Foundation of China · Excellent Youth Foundation of Natural Science Foundation of Hunan Province · Key Laboratory of Road Structure and Material of the Ministry of Transport through Grant · Open Funds of the National Engineering Laboratory of Highway Maintenance Technology through Grant · Key Project of Education Department of Hunan Province · Open Funds of the National Engineering Laboratory of Highway Maintenance Technology

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