摘要
针对现行技术状况评定体系无法体现中、下承式拱桥强健性影响的问题,提出考虑悬吊桥面系强健性的技术状况评定方法。以某中承式钢管混凝土拱桥为背景,针对以横梁受力为主的3种桥面系结构,分别按现行规范和考虑强健性的评定方法对该桥上部结构进行技术状况评定。结果表明:不考虑桥面系强健性时,该桥按照《公路桥梁技术状况评定标准》(JTG/T H21-2011)评定的结果是纵梁数量越多结构得分越低,按《城市桥梁养护技术标准》(CJJ 99-2017)评定的结果是3种结构均为"不合格级",这都是不合理的;考虑桥面系强健性时,该桥的评定结果为其余条件相同时强健性越好的结构其技术状况也越好;考虑强健性的技术状况评定方法更能反映桥梁的实际状况,适应维护管理的需求。
In view of the problem that the influences of the robustness of half through and through arch bridges can not be reflected in the current technical condition evaluation systems, a technical condition evaluation method considering the robustness of the suspended floor systems of the bridges was put forward. A half-through concrete-filled steel tube arch bridge was selected as an example and for the 3 types of the floor system structures having their cross beams as the main load bearing components, the technical condition evaluation of the superstructure of the bridge was implemented, respectively using the current standards and the evaluation method considering the robustness. The results yield that when the robustness of the floor systems is not considered, the evaluation of the bridge following the Standards for Technical Condition Evaluation of Highway Bridges （JTG/T H21 2011） is that the more the numbers of the stringers on the bridge are, the fewer scores the structure will have. The evaluation following the Technical Standard of Maintenance for City Bridge （CJJ 99-2017） is that the 3 floor system structures are defined as the ＂unqualified＂ and all of the evaluation of the two standards is not reasonable. When the robustness of the floor systems is considered and on condition that the other evaluation conditions are the same, the evaluation of the bridge is that the better the robustness is, the better the technical conditions of the structure of the bridge will be. The technical condition evaluation method considering the robustness can better reflect the real conditions of the bridge and can well accommodate to its maintenance and management requirements.
作者
范冰辉
陈宝春
吴庆雄
FAN Bing-hui;CHEN Bao-chun;WU Qing-xiong(College of Civil Engineering,Fuzhou University,Fuzhou 350108,China)
出处
《桥梁建设》
EI
CSCD
北大核心
2018年第5期64-68,共5页
Bridge Construction
基金
国家自然科学基金项目(51678154)
福建省中青年教师教育科研项目(JAT170063)~~
关键词
拱桥
钢管混凝土结构
强健性
悬吊桥面系
技术状况评定
横梁
纵梁
arch bridge
concrete-filled steel tube structure
robustness
suspended floor system
technical condition evaluation
cross beam
stringer
