中外规范钢筋混凝土桥梁裂缝计算对比研究  

Study on Comparison of the Calculation of Reinforced Concrete Bridge Cracks in Domestic and Foreign Codes

作　　者：糜径超 郑平 姚永丁 MI Jingchao;ZHENG Ping;YAO Yongding(HuaDong Engineering Corporation Limited, Hangzhou 311122, China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,杭州311122

出　　处：《交通科技》2022年第3期90-94,共5页Transportation Science & Technology

摘　　要：在进行钢筋混凝土桥梁裂缝计算时,受地理环境、荷载条件、主观意识等的影响,不同的国家(地区)的规范公式存在较大不同。为了掌握不同国家和地区桥梁抗裂设计的侧重点,文中通过对比各国规范公式,针对计算公式和裂缝宽度限值,采用控制变量法进行研究分析。结果表明,不同计算方法对影响因子的敏感性有较大差异,其中中国、澳大利亚规范对裂缝控制要求最严格,俄罗斯、美国规范规定最为宽松,设计时应综合考虑安全和经济性要求合理选用规范。In the calculation of cracks in reinforced concrete bridges,the formulas given by the codes of different countries(regions)are quite different due to the influence of geographical environment,load conditions and subjective consciousness,etc.In order to facilitate designers to grasp the key points of bridge crack resistance design in different countries and regions,control variable method is adopted for the research of the calculation formula and crack width limit value by comparing the standard formulas of various countries.It is concluded that the sensitivity of different calculation methods to influencing factors is quite different.Among them,the Chinese and Australian codes have the strictest requirements for crack control,and the Russian and American codes have the most relaxed regulations.The codes should be reasonably selected for safety and economic requirements in the design.

关 键 词：钢筋混凝土桥梁 裂缝宽度计算 控制变量 中外规范 

分 类 号：U441[建筑科学—桥梁与隧道工程]