微型土压力盒在砂土单桩模型试验中的标定及应用
Calibration and Application of Miniature Earth Pressure Cell in Sandy Single Pile Model Test
马思彬 1孙吉主 1王勇2
作者信息
- 1. 武汉理工大学土木工程与建筑学院,武汉 430070
- 2. 中科院武汉岩土力学研究所,武汉 430071
- 折叠
摘要
研究了不同加载界面尺寸对砂标准确性的影响.结果表明,采用大尺寸加载界面方法标定的土压力与实际值基本一致,拟合相关性系数均在95％以上,并且砂标系数和油标系数吻合较好.将标定好的土压力盒用于单桩模型试验,发现实测桩周土抗力与通过桩身弯矩计算的土抗力基本吻合.该研究对桩基水平加载模型试验中土抗力的准确测定具有重要的参考价值.
Abstract
The influence of different loading interface sizes on the accuracy of sand standards was investigated.The re-sults show that the soil pressure calibrated using the large-sized loading interface method is basically consistent with the actual value,with fitting correlation coefficients above 95％,and the sand standard coefficient and oil standard coefficient are in good agreement.The calibrated miniature earth pressure cell was used for single pile model testing,and it was found that the measured soil resistance around the pile was basically consistent with the soil resistance calculated by the pile ben-ding moment.This study has important reference value for the accurate determination of soil resistance in horizontal load-ing model tests of pile foundations.
关键词
微型土压力盒/土压力标定/砂土/单桩基础/模型试验Key words
miniature earth pressure cell/earth pressure calibration/sandy soil/single pile/model test引用本文复制引用
出版年
2024
NETL
NSTL
万方数据