既有拓宽加固的预应力混凝土空心板梁桥技术状况评估分析  

Evaluation and Analysis of Prestressed Concrete Hollow Slab Bridge with Widening and Reinforcement

作　　者：游勇利 彭武 谈勇 张腾龙 曹琪 杨超[3] YOU Yong-li;PENG Wu;TAN Yong;ZHANG Teng-long;CAO Qi;YANG Chao(Jiangxi Highway Design and Research Institute,Nanchang 330000,China;Nanchang Normal University Nanchang 330032,China;East China Jiaotong University,Nanchang 330003,China)

机构地区：[1]江西省公路科研设计院有限公司,南昌330000 [2]南昌师范学院,南昌330032 [3]华东交通大学,南昌330003

出　　处：《工程建设与设计》2022年第18期69-71,共3页Construction & Design for Engineering

基　　金：江西省交通运输厅科技项目(2019Q0024)。

摘　　要：针对既有拓宽加固的预应力混凝土空心板梁桥,采用现场外观检查方法,依据JTG/TH21—2011《公路桥梁技术状况评定标准》,分别对桥面系、上部结构、下部结构进行评估,再综合得出整个桥梁技术状况的评估。评估结果为:该桥上部结构分值为58.10,技术状况为4类;下部结构分值为76.93,技术状况为3类;桥面系分值为66.39,技术状况为3类;总体分值为67.69,根据规范等相关要求,评定等级为4类桥梁,应进行大修或改建,及时进行交通管制或封闭交通。In view of the existing widened and strengthened prestressed concrete hollow girder bridge,the site appearance inspection method is adopted to evaluate the bridge deck system,upperstructure and substructure respectively according to JTG/T H21-2011 Standard for Technical Condition Evaluation of Highway Bridge,and then the evaluation of the whole bridge technical condition is obtained comprehensively.The evaluation results are as follows:the score of the bridge superstructure is 58.10,and the technical status is 4.The substructure score is76.93,and the technical status is 3.The bridge deck system score is 66.39,and the technical status is 3.The overall score is 67.69.According to the regulations and other relevant requirements,the bridge is rated as Class 4.It should be overhauled or rebuilt,and traffic control or traffic closure should be carried out in time.

关 键 词：拓宽加固 预应力 空心板梁桥 技术状况评估 

分 类 号：U446.3[建筑科学—桥梁与隧道工程]