厚黄土地层浸没试验中试验坑尺寸影响的定量研究

IF 5.9 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Ain Shams Engineering Journal Pub Date : 2025-08-14 DOI:10.1016/j.asej.2025.103686

Bin Hou , Faning Dang , Yi Yao , Wuwei Zhu , Haibin Xue , Jiayang Li

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引用次数: 0

摘要

试验坑尺寸对黄土湿陷变形有显著影响，但影响机理和定量关系尚不清楚。本研究结合工程勘察与理论分析，探讨基坑尺寸对湿陷变形的影响。以非饱和土力学为基础，建立了土体侧壁摩擦与湿陷变形的耦合模型。提出了临界坑尺寸的计算方法和实测自重可折叠变形的修正公式。工程实例验证表明，当坑半径超过临界阈值时，侧壁摩擦的影响可以忽略不计。修正后的变形测量结果与理论预测更加吻合，减少了与尺寸相关的误差。研究结果为湿陷性黄土地区浸没试验坑的设计和经验数据的修正提供了理论依据。

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Quantitative study on the effects of test pit dimensions during immersion testing of thick loess strata

The collapsible deformation of loess is significantly influenced by test pit dimensions, but the mechanisms and quantitative relationships remain unclear. This study combines engineering surveys and theoretical analysis to explore how pit dimensions affect collapsible deformation. Based on unsaturated soil mechanics, a coupled model integrating sidewall friction and collapsible deformation was developed. A method for calculating critical pit dimensions and a correction formula for measured self-weight collapsible deformation were proposed. Validation using engineering cases showed that when the pit radius exceeds the critical threshold, sidewall friction’s impact becomes negligible. Corrected deformation measurements then align better with theoretical predictions, reducing dimension-related errors. These results provide a theoretical basis for designing immersion test pits and correcting empirical data in collapsible loess regions.

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来源期刊

Ain Shams Engineering Journal Engineering-General Engineering

CiteScore

10.80

自引率

13.30%

发文量

441

审稿时长

49 weeks

期刊介绍： in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.