Optimization Analysis for Pavement Construction Integrated Optical Fiber Sensors Based on DEM-FDM Coupled Method
Peixin Tian, Min Xiao, Yaoting Zhu, Xihai Yang, Yongwei Li, Xunhao Ding, Tao Ma
TL;DR
This study uses a coupled DEM-FDM method to optimize the design of optical fiber sensors embedded in pavement structures for better durability and construction efficiency.
Contribution
The paper introduces a novel DEM-FDM coupled method to analyze the mechanical behavior of optical cables during pavement compaction.
Findings
The maximum contact force of 13.2 mm aggregates in the Z-direction exceeds 150 N during compaction.
Adding GFRP components and an armored layer reduces stress and displacement by up to 66.7%.
Thicker armored layers improve resistance to both tension and compression.
Abstract
Today, distributed optical fiber sensors are widely used in structural health monitoring due to their high sensitivity and long-distance applicability. However, when embedded in pavement structures, distributed optical fiber sensors are always installed in a slotted buried fashion, which not only affects current pavement durability but also reduces pavement construction efficiency. In order to design clear requirements of in situ-embedded distributed optical fiber sensors for pavement construction, this study analyzes the micro-mechanical behavior of optical cables under the ultimate pavement compaction state based on a coupled DEM-FDM approach. According to the study results, it is found that when the pavement subbase was compacted, the maximum contact force of 13.2 mm aggregates in the Z-direction exceeds 150 N, which is the main resistance of the external load during pavement…
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Taxonomy
TopicsAdvanced Fiber Optic Sensors · Geotechnical Engineering and Soil Stabilization · Asphalt Pavement Performance Evaluation