Shaking-table tests on the liquefaction characteristics of organic matter-disseminated sand in island areas
Abstract
针对海岛区域性砂土，开展不同砂样、不同峰值加速度条件下的自由场地振动台试验，结合试验现象与响应数据阐述砂土液化特性，并对其影响因素进行分析。结果表明： 2种砂土地基均发生变形沉降，伴有喷砂冒水等液化现象；超静孔压比与加速度呈现正相关性，随着埋深的增加，液化风险降低；有机质浸染砂超静孔隙水压力消散速率慢且有残存，标准砂超静孔隙水压力消散速度快且彻底；加速度放大系数呈现高程放大效应，加速度放大系数随加速度增加而增大；循环剪应力随加速度的增加而上升，有机质浸染砂显示出在相同条件下更高的液化风险；显著性分析表明峰值加速度对砂土液化的影响高于埋深。
Fields of Study & Subjects
Geotechnical Engineering and Soil Mechanics
Geotechnical Engineering and Underground Structures
Geotechnical Engineering and Soil Stabilization
Publication details
- Journal / source
- Natural Science of Hainan University
- Volume
- 44
- Issue
- 1
- Pages
- 87–87
- Publication date
- 1 January 2026
- Language
- ZH