堆
岩土工程
基础(证据)
凝聚力(化学)
拱门
地质学
内耗
有限元法
刚度
结构工程
工程类
材料科学
法学
化学
有机化学
政治学
复合材料
作者
Qingyang Xu,Jinli Xie,Linhai Lu,Meizi Wang,Chengjiu Wu,Qiang Meng
标识
DOI:10.1016/j.undsp.2023.09.011
摘要
This study presents a detailed investigation into the soil arching effects within deep foundation pits (DFPs), focusing on their mechanical behavior and implications for structural design. Through rigorous 3D finite element modeling and parameter sensitivity analyses, the research explores the formation, geometric characteristics, and spatial distribution of soil arching phenomena. The investigation encompasses the influence of key parameters such as elastic modulus, cohesion, and internal friction angle on the soil arching effect. The findings reveal that soil arching within DFPs exhibits distinct spatial characteristics, with the prominent arch axis shifting as excavation depth progresses. Optimal soil arching is observed when the pile spacing approximates three times the pile diameter, enhancing soil retention and minimizing deformation risks. Sensitivity analyses highlight the significant impact of soil parameters on soil arching behavior, underscoring the critical role of cohesive forces and internal friction angles in shaping arching characteristics. By elucidating the interplay between soil parameters and soil arching effects, the research provides insights for optimizing pile spacing and structural stability.
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