HRB600级钢筋钢纤维高强混凝土柱的受压性能  

Compressive performance of steel fiber reinforced high-strength concrete columns with HRB600 steel bars

作　　者：张建伟[1] 刘娟 冯曹杰 曹万林[1] ZHANG Jianwei;LIU Juan;FENG Caojie;CAO Wanlin(Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124

出　　处：《建筑结构》2021年第4期71-76,32,共7页Building Structure

基　　金：国家自然科学基金项目资助(51678009);北京市教委科技重点项目资助(KZ201710005003)。

摘　　要：为了解HRB600级钢筋钢纤维高强混凝土柱的受压性能,推动高强钢筋和高强混凝土的工程应用,进行了3根混凝土强度等级为C80、截面尺寸为600mm×600mm、不同偏心距的HRB600级钢筋钢纤维高强混凝土柱的受压试验,分析了其破坏特征、变形能力和材料应变发展规律,并与相应的HRB600级钢筋高强混凝土柱受压试验结果进行了比较。试验结果表明:在高强混凝土中掺入适量钢纤维,可以使柱的裂缝宽度明显减小、裂缝间距缩短,降低柱的损伤程度,提高其延性和变形能力,增强HRB600级钢筋与高强混凝土的协同工作性能,使两种材料的强度优势得以充分发挥,获得高性能的柱构件。In order to investigate the compressive performance of high-strength steel fiber reinforced high-strength concrete columns with HRB600 steel bars and promote the engineering application of high-strength steel bars and high-strength concrete, three steel fiber reinforced C80 concrete columns with cross-sectional dimensions of 600 mm×600 mm were tested under different eccentric compression loads. The failure characteristics, deformation capacity and material strain development law of test specimens were discussed. At the same time, the discussing results were compared with that of common high-strength concrete columns with same steel bars. The test results show that adding the appropriate amount of high-strength steel fibers in high-strength concrete can significantly reduce the width and spacing of cracks,mitigate the column damage, and improve the deformation capacity and ductility of columns and the collaborative performance of the HRB600 steel bars and high-strength concrete, so that the strength advantages of the two materials can be fully exerted, and high-performance column members can be obtained.

关 键 词：HRB600级钢筋 钢纤维 高强混凝土柱 单调加载 受压性能 

分 类 号：TU375.3[建筑科学—结构工程]