铁道标准设计2017，Vol.61Issue(6)：44-48,5.DOI:10.13238/j.issn.1004-2954.2017.06.010
沪通铁路土压力盒标定工装设计及试验研究
Design and Experimental Research of Calibration Device of Earth Pressure Cell Based on Hu-Tong Railway
摘要
Abstract
In order to obtain accurate test data, the requirement of the soil pressure cell calibration is proposed. Through the modeling analysis of ANSYS, calibration device suitable for the soil pressure cell in laboratory is designed. The bearing plate is 32 cm in diameter and 2 cm in thickness, and the calibration barrel is 15 cm in height, 33 cm in inner diameter and 0. 5 cm in thickness. The results of the experimental study show that the correlation coefficients of R2 obtained by the least square method are all more than 0. 99 and the linearity is relatively strong; the values of K1 and K2 are very close when two earth pressure cells are in the same measuring range; the data have good repeatability and the device is applicable;the K1 value of calibration test for sand soil is more than the K2 value of factory calibration. It is necessary to conduct calibration test based on engineering practices prior to engineering application and the selected measurement range should not exceed 2/3 of the maximum range of the soil pressure cell.关键词
土压力盒/ANSYS/标定工装/砂标法/最小二乘法/量程选择Key words
Earth pressure cell/ANSYS/Calibration device/Calibration test in sand soil/The least square method/Selection measurement range分类
建筑与水利引用本文复制引用
尹紫红,杨邦强,杨建中,邵寅旭..沪通铁路土压力盒标定工装设计及试验研究[J].铁道标准设计,2017,61(6):44-48,5.基金项目
国家自然科学基金资助项目(51378441) （51378441）
国家留学基金管理委员会资助项目(201507005063) （201507005063）
