混杂配筋(钢和FRP筋)梁正截面受弯设计方法研究  

DESIGN METHOD FOR NORMAL SECTION OF HYBRID REINFORCED(STEEL AND FRP BARS)BEAMS UNDER BENDING

作　　者：杨洋 潘登 吴刚[2] 曹大富[1] 陆伟刚[3] YANG Yang;PAN Deng;WU Gang;CAO Da-fu;LU Wei-gang(College of Civil Science and Engineering,Yangzhou University,Yangzhou,Jiangsu 225127,China;School of Civil Engineering,Southeast University,Nanjing,Jiangsu 210096,China;College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou,Jiangsu 225127,China)

机构地区：[1]扬州大学建筑科学与工程学院,江苏扬州225127 [2]东南大学土木工程学院,江苏南京210096 [3]扬州大学水利科学与工程学院,江苏扬州225127

出　　处：《工程力学》2021年第9期192-202,共11页Engineering Mechanics

基　　金：江苏省自然科学基金青年基金项目(BK20180931);国家自然科学基金青年基金项目(51908486);中国博士后基金项目(2020M671620);江苏省博士后科研资助计划项目(2020Z290)。

摘　　要：钢和纤维复合筋混杂增强混凝土(hybrid reinforced concrete,Hybrid-RC)梁具有较好的承载力、耐久性和延性。然而,基于文献调研发现,现有设计方法对Hybrid-RC梁正截面受弯的破坏形态还未能做出准确的预测。因此,该文修正了现有的设计方法,并通过数据库对比,验证了其有效性。在此基础上,对Hybrid-RC梁提出了一种新的设计思路,以减少使用成本,并得到更高的使用荷载。The hybrid reinforced concrete(Hybrid-RC)beam consisting steel bars and fiber-reinforced polymer bars can provide better bearing capacity,durability and ductility.However,literature review showed that the design methods for the normal section of Hybrid-RC beams under bending failed to predict the failure mode of these structures accurately.Therefore,it revises the existing design method,and verifies its effectiveness through database comparison.On this basis,a new design idea of Hybrid-RC beam is proposed to reduce the service cost and achieve higher service load.

关 键 词：混杂配筋(Hybrid-RC)梁 破坏形态 抗弯承载力 设计程序 数值模拟 

分 类 号：TU375.1[建筑科学—结构工程]