Research on the hydrothermal process and deformation law of the fill-cut transition section subgrade under dynamic load

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL Transportation Geotechnics Pub Date : 2025-02-17 DOI:10.1016/j.trgeo.2025.101524

Jinbang Zhai , Ze Zhang , Delong Zhang , Kun Zhang , Qihao Yu , Yaqi Zhang

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引用次数: 0

Abstract

The fill-cut transition section subgrade (FCTSS) is a weak point in subgrade damage. Indoor experiments were conducted to clarify the deformation damage mechanism. It was found that repeated dynamic load leads to upward migration of moisture along the fill-tangent interface and the formation of moisture migration channels. The overall moisture of the soil samples increased under the condition of continuous moisture migration and aggregation. The increase in moisture weakened the strength of the soil, resulting in an increase in moisture accumulation in the region corresponding to the location of greater compressive deformation, which is also the location where damage occurred. Therefore, in order to prevent the effect of dynamic load on the deformation damage of the subgrade, the external recharge of FCTSS should be controlled. This study can provide a valuable reference for the construction and protection of subgrade in the fill-cut transition section in loess areas.

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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.