耐蚀钢筋混凝土梁抗弯承载力试验研究  

RESEARCH ON THE FLEXURAL CAPACITY OF CONCRETE BEAM REINFORCED WITH ANTI-CORROSION STEEL BARS

作　　者：赵进阶[1] 杨勇新[1] 廉杰[1] 李彪[1] 陈伟[1] 候慕轶 ZHAO Jinjie YANG Yongxin LIAN Jie LI Biao CHEN Wei HOU Muyi(Central Research Institute of Building and Construction Co. Ltd, MCC, Beijing 100088, China Southwest University of Science and Technology, Mianyang 621010, China)

机构地区：[1]中冶建筑研究总院有限公司,北京100088 [2]西南科技大学,四川绵阳621010

出　　处：《工业建筑》2017年第10期191-194,共4页Industrial Construction

基　　金：中冶建筑研究总院有限公司重大课题资助(YBD2014Ky01)

摘　　要：采用耐蚀钢筋代替普通钢筋可以有效改善混凝土结构的耐久性,但当前国内的技术标准并未对采用此类新型钢筋混凝土构件的计算分析作出规定。因此,通过试验对HRB500c耐蚀钢筋混凝土梁的正截面抗弯承载力及裂缝宽度进行研究,并与GB 50010—2010《混凝土结构设计规范》中算式的计算结果进行对比。结果表明:GB 50010—2010建议的算式可用于预测耐蚀钢筋混凝土梁的正截面抗弯承载力、极限状态时的裂缝间距和最大裂缝宽度。但当承受较小的外荷载时,GB 50010—2010会低估实际的最大裂缝宽度。The durability of RC structures can be greatly improved by adopting anti-corrosion rebars instead of normal rebars. However,the calculation of members reinforced with the anti-corrosion rebar has not been provided by Code for Design of Concretae Structures（ GB 50010—2010）. Thus,the flexural capacity and the crack width of concrete beam reinforced with HRB500 c rebars were investigated experimentally,and the test results were compared with the predicted data according to GB 50010—2010. The results showed that the equations suggested by GB 50010—2010 were capable to predict the ultimate flexural capacity,as well as the crack spacing and maximum crack width of the beam under the ultimate limit state. However,the crack width would be underestimated in the current code when subjected to a small load.

关 键 词：耐蚀钢筋 混凝土梁 受弯 裂缝间距 裂缝宽度 

分 类 号：TU375.1[建筑科学—结构工程]