高强钢筋混凝土结构设计及工程实例中钢筋用量分析  

Design of concrete structures with high strength reinforcement and analysis of the reinforcement amount in engineering projects

作　　者：方敏华[1] 刘立新[1] 

机构地区：[1]郑州大学综合设计研究院,郑州450002

出　　处：《建筑结构》2013年第10期59-63,30,共6页Building Structure

基　　金：国家科技支撑计划项目(2008BAE61B04)

摘　　要：讨论高强钢筋混凝土结构设计中的钢筋锚固长度和裂缝宽度控制等问题,对3个工程实例分别采用500,400,335MPa级热轧带肋钢筋进行设计,对不同强度等级钢筋的用量进行了分析和比较,得出了用400MPa级钢筋代替335MPa级钢筋用量可减少约10%、用500MPa级钢筋代替335MPa级钢筋用量可减少约20%的结论,并提出了高强钢筋工程设计和应用的建议。The anchorage length and the control of crack width in reinforced concrete structures with high strength reinforcement were discussed.For 3 engineering projects,hot-rolled ribbed steel bars of 500MPa,400MPa and 335MPa grade were used respectively.The reinforcement amount of different strength were analyzed and compared.The results show that the reinforcement amount may decrease about 10% for using reinforcement of 400MPa instead of steel bars of 335MPa.When using 500MPa grade steel bars to replace the 350MPa ones,the reduction can be 20%.According to the results,suggestions for the design and application of the high strength reinforcement in engineering were also given.

关 键 词：高强钢筋 钢筋用量 锚固长度 裂缝宽度 

分 类 号：TU375[建筑科学—结构工程]