区域约束箍筋形式对RCC梁正截面抗弯性能影响分析  

Experimental Research and Nonlinear Finite Element Analysison Shear Behavior of Regional Confined Concrete Beams

作　　者：丁嘉俊[1] 曹新明[1] DING Jiajun CAO Xinming(College of Civil Engineering, Guizhou University, Guiyang 550025, China)

机构地区：[1]贵州大学土木工程学院,贵州贵阳550025

出　　处：《贵州大学学报（自然科学版）》2016年第6期98-103,共6页Journal of Guizhou University:Natural Sciences

基　　金：基金项目 贵州省住房和城乡建设厅<区域约束混凝土结构设计标准编制>(黔建科通[2013]367号)

摘　　要：根据区域约束混凝土理论分析计算,对两根不同约束形式的箍筋间距为50 mm的区域约束混凝土梁(RCC梁)进行了抗弯性能的试验研究,并用ABAQUS有限元软件对梁的抗弯性能进行了模拟分析。结果表明,采用"日"字形箍筋梁与小方箍梁对比可知,"日"字形箍筋梁的箍筋形式能提高混凝土的抗剪承载力,更好的控制了裂缝向受压区延伸,因此采用"日"字形箍筋对区域约束混凝土梁的抗弯承载力以及延性均有大幅度的提高,能创造更好的经济效益。Regional confined concrete（ RCC） is a new concept based on study of normal confined concrete（ NCC）. Many experiment researches have indicated that the compressive properties,shear capacity,anti-seismic capacity and ductility of RCC have a certain increase compared with NCC. By using the RCC constitutive relationships,nonlinear finite element analysis of 4 RCC beams under shear load has been made to simulate the whole process of the experiment. It proved that conclusion given by the nonlinear finite element analysis software of ABAQUS is consistent with the experiment which provided theoretic foundation for further research of RCC.

关 键 词：区域约束混凝土 箍筋 承载力 延性 ABAQUS 

分 类 号：TU375.1[建筑科学—结构工程]