- 摘 要
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（1 河北冀科工程項目管理有限公司， 石家莊 050021； 2 河北地質大學勘查技術與工程學院， 石家莊 050031； 3 河北省通信建設有限公司， 石家莊 050021； 4 河北水利電力學院土木學院， 滄州 061500）
［摘要］剪切-粘結破壞是鋼筋混凝土柱的一種重要的震害形式，為研究大尺寸鋼筋混凝土短柱在高軸壓比下的剪切-粘結破壞性能，采用40 000kN的大型加載設備對2個橫截面為700×700的鋼筋混凝土短柱進行了低周反復加載試驗，研究試件的破壞過程、滯回特性、承載能力和耗能能力等抗震性能，并進行了影響因素分析。結果表明：試件發(fā)生剪切-粘結破壞，耗能能力較低；試件J-0-4，J-0-6的峰值荷載基本相同；為了避免短柱發(fā)生剪切-粘結破壞，依據(jù)試驗結果認為《混凝土結構設計規(guī)范》(GB 50010—2010)規(guī)定的每側縱筋配筋率不大于1-2%的設定值偏高。
［關鍵詞］大尺寸試件； 高軸壓比； 鋼筋混凝土短柱； 剪切-粘結破壞； 抗震性能
中圖分類號：TU375-3文獻標識碼：A文章編號：1002-848X(2019)12-0089-05
Experimental study on shear-bond failure of large-scale reinforced concrete short columns with high axial compression ratio
Guo Jianming1， Xie Yongping2, Zhang Li3， Xue Bingyong4， Song Xinghai4
(1 Hebei Jike Engineering Project Management Co., Ltd., Shijiazhuang 050021, China；2 College of Exploration Technology and Engineering, Hebei GEO University, Shijiazhuang 050031, China；3 Hebei Communication Construction Co., Ltd., Shijiazhuang 050021, China； 4 College of Civil Engineering, Hebei University of Water Resources and Electiric Engineering, Cangzhou 061500, China)
Abstract:Shear-bond failure of reinforced concrete columns is a common form of the earthquake damage. In order to study the behavior of shear-bond failure of large-scale reinforced concrete short columns with high axial compression ratio, two 700×700 reinforced concrete short columns were test under low cycle reversed loading by using 40 000kN loading system. The seismic behaviors including the failure characteristic, hysteretic behavior, shear capacity and energy dissipation were studied, and the influence factors were analyzed. The results show that the short columns occur shear-bond failure, energy dissipation capacity of the specimen is poor， and the shear bearing capacity of specimen J-0-4 is approximately equal to the specimen J-0-6. In order to avoid shear-bond failure of short columns, according to the test results, it shows that the longitudinal reinforcement ratio of each side is not greater than 1-2% in Code for design of concrete structures (GB 50010—2010) is a little bit higher.
Keywords:large-scale specimen; high axial compression ratio; reinforced concrete short column; shear-bond failure; seismic behavior
*國家自然科學基金青年基金項目（51408378），河北省自然科學基金青年基金項目（E2015403018）,河北省教育廳自然科學類重點項目（ED2019026）。
通訊作者：解詠平，博士，副教授，碩士生導師，Email:axypa@163.com。
