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Analysis of soil-pile interaction considering slope effect in integral abutment jointless bridges (IAJBs) under cyclic loading
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Analysis of soil-pile interaction considering slope effect in integral abutment jointless bridges (IAJBs) under cyclic loading
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Journal Article
Analysis of soil-pile interaction considering slope effect in integral abutment jointless bridges (IAJBs) under cyclic loading
2025
Overview
This study systematically investigated the influence of slope effects on soil-pile interaction in integral abutment jointless bridges (IAJBs) under cyclic loading through pseudo-static cyclic tests. While existing studies on the soil-structure interaction in IAJBs had predominantly centered on level-ground conditions, the asymmetric constraint effects of sloped terrains remained inadequately investigated. To address this research limitation, three reinforced concrete piles—with varying ratios (b/d = 2.0, 0.0, −2.0) of the distance (b) from pile side relative to slope crest to the pile diameter (
d
)—were embedded in layered clay-sand slopes and subjected to cyclic displacements. Key results indicated that decreasing the ratio (b/d) from 2.0 to -2.0 increased the maximum damage depth by 25% and expanded the crack distribution range by 50%. The lateral load and soil reaction of the pile in the slope-facing direction decreased by 29.1% and 28.9%, respectively, while backslope values remained stable. Both the equivalent viscous damping and stiffness in the slope-facing direction degraded by 12–32%. These findings clarified the asymmetric soil-pile interaction mechanisms induced by slope effects and provided critical references for optimizing pile embedment depth and seismic design of IAJBs in sloped terrains.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
