Failure mechanisms and characteristics of high-filled embankments with different types of basal reinforcement

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics Pub Date : 2025-03-01 DOI:10.1016/j.trgeo.2025.101528

Boyang Xia , Gang Zheng , Haizuo Zhou , Yu Diao

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引用次数: 0

Abstract

The accurate evaluation of the failure mechanisms and characteristics of high-filled embankments reinforced by different basal reinforcements is essential for ensuring the safety of transportation infrastructure. This study conducted two centrifuge tests to investigate the failure mechanisms and characteristics of high-filled embankments reinforced by a geosynthetic and a concrete slab, respectively. The particle image velocimetry (PIV) technique was used to observe the initiation and progression mechanisms in the soft layer. The test results reveal that the geosynthetic-reinforced embankment exhibited a progressive shear failure mechanism and the soft layer exhibited strain-softening characteristics, while the embankment reinforced by the concrete slab exhibited instantaneous shear failure in a soft foundation. Based on numerical analysis, the relationship between the overall stability and the failure modes of the reinforced embankment system was revealed. The stiffness and layers of the basal reinforcements both had positive influence on the embankment stability when deep-seated rotational failure occurred. For embankment fills with low shear strength, employing a concrete slab as basal reinforcement led to general slope failure, and the global stability was determined by the shear strength of the embankment fill. The findings of this study may be useful for the design of transportation infrastructure.

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来源期刊

Transportation Geotechnics Social Sciences-Transportation

CiteScore

8.10

自引率

11.30%

发文量

194

审稿时长

51 days

期刊介绍： Transportation Geotechnics is a journal dedicated to publishing high-quality, theoretical, and applied papers that cover all facets of geotechnics for transportation infrastructure such as roads, highways, railways, underground railways, airfields, and waterways. The journal places a special emphasis on case studies that present original work relevant to the sustainable construction of transportation infrastructure. The scope of topics it addresses includes the geotechnical properties of geomaterials for sustainable and rational design and construction, the behavior of compacted and stabilized geomaterials, the use of geosynthetics and reinforcement in constructed layers and interlayers, ground improvement and slope stability for transportation infrastructures, compaction technology and management, maintenance technology, the impact of climate, embankments for highways and high-speed trains, transition zones, dredging, underwater geotechnics for infrastructure purposes, and the modeling of multi-layered structures and supporting ground under dynamic and repeated loads.