佳木斯大学学报(自然科学版)
佳木斯大學學報(自然科學版)
가목사대학학보(자연과학판)
JOURNAL OF JIAMUSI UNIVERSITY (NATURAL SCIENCE EDITION)
2014年
3期
321-324
,共4页
箍筋约束%力学性能%随机性
箍觔約束%力學性能%隨機性
고근약속%역학성능%수궤성
hoop confine%mechanical property%randomness
试验旨在研究箍筋约束对于混凝土轴压力学性能:强度、延性和随机性的影响.试验采用C70高强混凝土、方形箍筋约束试件,静态加载,每种试件得到5至7条全曲线样本.结果发现,当配箍率从1.1%提高到3.4%时,峰值强度提高47%,延性提高76%,同时标准差曲线峰值从8.95MPa降低到6.52Mpa,说明箍筋约束明显提升高强混凝土的力学性能,并减小其随机性.
試驗旨在研究箍觔約束對于混凝土軸壓力學性能:彊度、延性和隨機性的影響.試驗採用C70高彊混凝土、方形箍觔約束試件,靜態加載,每種試件得到5至7條全麯線樣本.結果髮現,噹配箍率從1.1%提高到3.4%時,峰值彊度提高47%,延性提高76%,同時標準差麯線峰值從8.95MPa降低到6.52Mpa,說明箍觔約束明顯提升高彊混凝土的力學性能,併減小其隨機性.
시험지재연구고근약속대우혼응토축압역학성능:강도、연성화수궤성적영향.시험채용C70고강혼응토、방형고근약속시건,정태가재,매충시건득도5지7조전곡선양본.결과발현,당배고솔종1.1%제고도3.4%시,봉치강도제고47%,연성제고76%,동시표준차곡선봉치종8.95MPa강저도6.52Mpa,설명고근약속명현제승고강혼응토적역학성능,병감소기수궤성.
The experiment was conducted to help building hoop confined high -strength concrete model , and studying confinement effects on stochastics of concrete .The specimens were in size of 150*150*400, and used C70 concrete , square hoop , and loaded statically .The results show that hoop confinement can improve per-formance of high-strength concrete considerably , and reduce the randomness of stress -strain behavior as well .