基于FRP的不配筋混凝土桥面结构工作性能研究

复合材料科学与工程 ›› 2014, Vol. 0 ›› Issue (8): 59-66.

基于FRP的不配筋混凝土桥面结构工作性能研究

李游^1,2, 郑愚^1*, 杨健彬¹, 魏木旺¹

1.东莞理工学院建筑工程系,东莞 523808;
2.华南理工大学土木与交通学院,广州 510641

收稿日期:2014-04-30 出版日期:2014-08-28 发布日期:2021-09-13
通讯作者: 郑愚(1978-),男,副教授,博士,主要从事结构耐久性、结构数值模拟及复合材料方面的研究,zhengy@dgut.edu.cn。
作者简介:李游(1987-),男,硕士研究生,主要从事结构分析及复合材料应用研究。
基金资助:
广东省高等学校优秀青年教师培养计划资助项目研究计划(Yq2013155);广东省交通厅科技计划(2011-02-040)

STUDY OF STRUCTURAL BEHAVIOUR OF REINFORCEMENT-FREE CONCRETE DECK STRUCTURE CONSTRUCTED WITH FRP

LI You^1,2, ZHENG Yu^1*, YANG Jian-bin¹, WEI Mu-wang¹

1. Department of Civil Engineering, Dongguang University of Technology, Guangdong 523808, China;
2. School of Civil Engineering and Transportation, South China University of Technology, Guangdong 510641, China

Received:2014-04-30 Online:2014-08-28 Published:2021-09-13

摘要/Abstract

摘要： 为了提高混凝土桥面板的耐久性和降低维修成本,本次研究建立了一种基于FPR的不配筋混凝土桥面结构体系。该桥面结构合理利用面板内的拱效应作为承载机理,采用GFRP杆件作为横向约束杆件,因此面板本体内不需配置受力筋。以支撑梁、约束杆件间距和加载区位置为结构参数,本文建立了一组1∶3比例缩小的桥面结构试验模型并对其进行了静力加载试验。分析研究桥面结构在轮胎荷载作用下的结构响应,清晰揭示了拱效应对该桥面结构承载性能的作用和影响。基于所建立非线性有限元模型计算结果与试验结果吻合良好,本文采用该数值模型进行了深入的参数分析,研究混凝土强度、拱高以及外置FRP约束杆件配置方式变化对该结构工作性能的影响。

关键词: GFRP, 桥面板, 试验研究, 有限元模拟, 拱效应

Abstract: To enhance the durability of concrete bridge deck structure and reduce the maintenance cost, a reinforcement-free concrete deck structure based on FRP was invented in this study. In this deck structure, the loading-carrying mechanism is an arching action inside the deck slab. Because this structure is restrained by horizontal GFRP rods, there is no reinforcement provided in the concrete slabs. A series of one-third scale test models were conducted and tested with the variation in structural parameters, including supporting beams, spacing of lateral restraint rods and loading positions. The results were used to study the effect of arching action on loading-carrying capacity of deck structures by investigating the behaviour of test decks under wheel loads. Due to the accurate validation of the results from nonlinear finite element analysis and experimental tests, a further parametric study were conducted to investigate the influence of other structural variables, such as concrete strengths, arch depth and configuration of FRP rods.

Key words: GFRP, deck slabs, finite element analysis, experimental study, arching action

中图分类号:

TB332

李游, 郑愚, 杨健彬, 魏木旺. 基于FRP的不配筋混凝土桥面结构工作性能研究[J]. 复合材料科学与工程, 2014, 0(8): 59-66.

LI You, ZHENG Yu, YANG Jian-bin, WEI Mu-wang. STUDY OF STRUCTURAL BEHAVIOUR OF REINFORCEMENT-FREE CONCRETE DECK STRUCTURE CONSTRUCTED WITH FRP[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(8): 59-66.

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