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（北京工業(yè)大學(xué)城市與工程安全減災(zāi)教育部重點(diǎn)實(shí)驗(yàn)室， 北京 100124）

［摘要］為了解HRB600級(jí)鋼筋鋼纖維高強(qiáng)混凝土柱的受壓性能，推動(dòng)高強(qiáng)鋼筋和高強(qiáng)混凝土的工程應(yīng)用，進(jìn)行了3根混凝土強(qiáng)度等級(jí)為C80、截面尺寸為600mm×600mm、不同偏心距的HRB600級(jí)鋼筋鋼纖維高強(qiáng)混凝土柱的受壓試驗(yàn)，分析了其破壞特征、變形能力和材料應(yīng)變發(fā)展規(guī)律，并與相應(yīng)的HRB600級(jí)鋼筋高強(qiáng)混凝土柱受壓試驗(yàn)結(jié)果進(jìn)行了比較。試驗(yàn)結(jié)果表明：在高強(qiáng)混凝土中摻入適量鋼纖維，可以使柱的裂縫寬度明顯減小、裂縫間距縮短，降低柱的損傷程度，提高其延性和變形能力，增強(qiáng)HRB600級(jí)鋼筋與高強(qiáng)混凝土的協(xié)同工作性能，使兩種材料的強(qiáng)度優(yōu)勢(shì)得以充分發(fā)揮，獲得高性能的柱構(gòu)件。

［關(guān)鍵詞］HRB600級(jí)鋼筋；鋼纖維；高強(qiáng)混凝土柱；單調(diào)加載；受壓性能

中圖分類號(hào)：TU375-3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)04-0071-06

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

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）

Abstract: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 600mm×600mm 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.

Keywords:HRB600 steel bar;steel fiber;high-strength concrete column;monotonic load;compressive performance

*國(guó)家自然科學(xué)基金項(xiàng)目資助（51678009），北京市教委科技重點(diǎn)項(xiàng)目資助（KZ201710005003）。

作者簡(jiǎn)介：張建偉，博士，教授，博士生導(dǎo)師，Email: zhangjw@bjut.edu.cn。