摘要
针对超高强混凝土脆性显著,传统轴压比限值无法保证其抗震安全性问题,本文设计试验研究不同轴压比限值下超高强混凝土柱的抗震性能。设计3个轴压比限值分别为0.50、0.60、0.70的1/2缩尺比例超高强混凝土柱试件,对三组试件开展抗震试验。试验结果表明:A-2轴压比试件(0.6)滞回环最为饱满,塑性变形能力最优,且在各加载阶段累计耗能最高,强度退化系数整体较高,承载能力强。通过与现有传统方法对比可知,本文方法的TECI指标始终高于已有方法,且PSD值始终处于较低水平,这表明研究方法的结论与实际情况是一致的。
In response to the significant brittleness of ultra-high strength concrete and the inability of traditional axial compression ratio limits to ensure its seismic safety,this paper designs experiments to study the seismic performance of ultra-high strength concrete columns under different axial compression ratio limits.Three 1/2 scale ultra-high strength concrete column specimens with axial compression ratio limits of 0.50,0.60 and 0.70 respectively were design,and seismic tests were carried out on the three groups of specimens.The test results show that the hysteresis ring of the A-2 axial compression ratio test piece(0.6)is the fullest,the plastic deformation capacity is the best,and the cumulative energy consumption is the highest in each loading stage.The overall strength degradation coefficient is relatively high,and the bearing capacity is strong.By comparing with the existing traditional methods,it can be reasoned that the TECI index of the research method is always higher than that of the existing methods,and the PSD value is always at a relatively low level.This indicates that the conclusion of the research method is consistent with the actual situation.
作者
方欣欣
陈月香
周伟亮
FANG Xinxin;CHEN Yuexiang;ZHOU Weiiang(Jinshan School,Fujian Agriculture and Forestry University,Fuzhou Fujian 350002,China)
出处
《阜阳师范大学学报(自然科学版)》
2025年第3期74-79,共6页
Journal of Fuyang Normal University:Natural Science
基金
福建省中青年教师教育科研项目(JAT200989)。
关键词
超高强混凝土柱
轴压比限值
对抗震性
ultra high strength concrete columns
axial compression ratio limit
seismic resistance
作者简介
方欣欣(1990-),女,硕士,讲师,研究方向:工程结构受力性能及抗震,Email:fangxinxin0102@163.com。
