钢筋陶瓷混凝土黏结性能及梁受弯性能实验研究  

Experimental Study on Bond Behavior Between Steel Bars and Ceramic Concrete and Flexural Behavior of Ceramic Concrete Beam

作　　者：许颖 金淦 郭家驹 XU Ying;JIN Gan;GUO Jiaju(Guangdong Provincial Key Laboratory of Intelligent and Resilient Structures for Civil Engineering,Harbin Institute of Technology,Shenzhen 518055,China)

机构地区：[1]哈尔滨工业大学(深圳)广东省土木工程智能韧性结构重点实验室,广东深圳518055

出　　处：《湖南大学学报（自然科学版）》2024年第11期94-103,共10页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(52078173);广东省土木工程智能韧性结构重点实验室资助项目(2023B1212010004);深圳市高等院校稳定支持项目(GXWD20231129175636001);广东省自然科学基金资助项目(2024A1515011980)。

摘　　要：为了将陶瓷混凝土应用于工程结构构件中,通过中心拉拔试验,研究了钢筋与陶瓷混凝土黏结性能,并给出了陶瓷混凝土黏结滑移本构关系及极限黏结强度预测公式;通过四点抗弯试验研究了钢筋陶瓷混凝土梁的受弯性能,从承载力、挠度、纵筋应变、平均裂缝间距及最大裂缝宽度等方面研究了其受弯性能.结果表明陶瓷混凝土黏结性能弱于普通混凝土,极限黏结强度与普通混凝土接近,下降段速率大于普通混凝土,残余黏结强度小于普通混凝土;钢筋陶瓷混凝土梁受弯过程和承载力与普通混凝土梁接近,但平均裂缝间距大于普通混凝土,最大裂缝宽度的计算仍符合我国混凝土设计规范.To apply ceramic concrete to engineering structural components,the bond behavior of steel bars and ceramic concrete was studied through a central pull-out test,and the bond-slip constitutive model of ceramic concrete and the prediction formula of ultimate bond strength were given.The flexural behavior of reinforced ceramic concrete beams was studied through four-point bending test,and the flexural performance was studied from the aspects of bearing capacity,deflection,longitudinal bar strain,average crack spacing and maximum crack width.The results show that the bond behavior of ceramic concrete is weaker than that of ordinary concrete,the ultimate bond strength is close to that of ordinary concrete,the rate of descent is greater than that of ordinary concrete,and the residual bond strength is lower than that of ordinary concrete.The bending process and bearing capacity of reinforced ceramic concrete beams are similar to those of ordinary concrete beams,but the average crack spacing is greater than that of ordinary concrete,and the calculation of the maximum crack width still agrees with Chinese concrete design code.

关 键 词：废弃陶瓷 再生陶瓷混凝土 黏结性能 四点抗弯试验 受弯性能 

分 类 号：TU375[建筑科学—结构工程]