Effects of asphalt overlay on XCC pile-supported embankment vibration from a moving vehicle. Issue 112 (September 2018)

• Record Type: Journal Article
• Authors: Yin, Feng; Zhou, Hang; Liu, Hanlong; Chu, Jian
• Is Part Of: Soil dynamics and earthquake engineering. Issue 112(2018)
• Page Start: 18
• Page End: 23
• Publication Date: 2018-09
• Subjects: Embankment -- XCC pile -- Moving load -- Asphalt overlay -- Vibration analysis -- Finite element analysis; Soil dynamics -- Periodicals; Earthquake engineering -- Periodicals; Sols -- Dynamique -- Périodiques; Génie parasismique -- Périodiques; 624.176205
• DOI: 10.1016/j.soildyn.2018.04.049
• Languages: English
• ISSNs: 0267-7261

Abstract

Abstract: Vibration behaviors of the asphalt pavement-embankment-X-shaped cast-in-situ concrete (XCC) piles reinforced ground system under a moving vehicle are simulated through three-dimensional finite element approach. The influences of asphalt overlays on displacement pattern on the top of pavement, the asymmetric movement of surrounding soil around XCC piles, and the concentration coefficient after laying the overlay are investigated. The obtained results show that the dynamic displacement decreases as a consequence of the increasing stiffness of this system after laying asphalt overlays. It is also shown that the vertical displacement of soil around piles decreases as the thickness of overlays increases. Meanwhile, the asymmetric extent, in which there is an obvious differential displacement between the flat and concave area, is presented. In addition, the concentration coefficient for the embankment's top flat is significantly larger than that for the slope surface, and its increasing is caused by asphalt overlays. Highlights: Vibration behaviors of the embankment system are investigated. The overlay results in the weakening of the vibration of pavement. The differential displacement of soil between flat and concave area is found. The overlay can improve the concentration effect.