基于实例分析的UHPC延伸桥面无缝桥力学性能研究
PDF下载 (95)陈 隆,石鑫磊,丁 勇,韩春旭,熊 群.基于实例分析的UHPC延伸桥面无缝桥力学性能研究[J].宁波大学学报(理工版),2025,38(3):86-94.DOI:10.20098/j.cnki.1001-5132.2024.0503
CHEN Long,SHI Xinlei,DING Yong,HAN Chunxu,XIONG Qun.search on mechanical performance of the jointless bridge with UHPC extended bridge deck based on case analysis[J].Journal of Ningbo University(Natural Science & Engineering Edition),2025,38(3):86-94.DOI:10.20098/j.cnki.1001-5132.2024.0503
| Title: | search on mechanical performance of the jointless bridge with UHPC extended bridge deck based on case analysis |
| 作者: | 陈 隆, 石鑫磊, 丁 勇, 韩春旭, 熊 群 |
| Author(s): | CHEN Long, SHI Xinlei, DING Yong, HAN Chunxu, XIONG Qun |
| 关键词: | 无缝桥; 实例分析; 延伸桥面板; 有限元方法; 车辆荷载试验 |
| Keywords: | jointless bridge; case analysis; extended bridge deck; finite element method; vehicle load test |
| 分类号: | U442 |
| DOI: | 10.20098/j.cnki.1001-5132.2024.0503 |
| 文献标识码: | A |
| 摘要: | 延伸桥面无缝桥作为一种新型的桥梁结构, 其力学性能是关注的重点。为此, 以一座实际工程中的延伸桥面无缝桥为例, 建立包含主梁、超高性能混凝土(Ultra-High Performance Concrete, UHPC) |
| Abstract: | As a new type of bridge structure, the mechanical performance of the jointless bridge with extended deck has drawn significant attention. In this paper, an actual jointless bridge with extended deck is taken as an example for research. Firstly, an overall finite element model is established that incorporates the main girder, UHPC (Ultra-High Performance Concrete) link slab, and extended pavement at the bridge end. Then, the stress in the UHPC extended bridge decks, which exhibits the weak point of the bridge, is analyzed under the most unfavorable vehicle loads, gradient temperature and uniform temperature difference with seasonal variation, respectively. The results show that the UHPC extended bridge deck meets the strength requirements under these three working conditions. Finally, the real bridge under vehicle load is tested for the stresses in the deck reinforcement and the strains in the main girder. The results indicate significant rebar stresses in the extended bridge decks and in the link slab as well, necessitating full bridge analysis. The extended bridge decks and the link slab play a role of boundary constraint for the main girder, effectively reducing the strains in the main girder |
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| 备注/Memo: | 收稿日期: 2024−05−06 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 浙江省自然科学基金（LTGS24E080002）; 宁波市交通运输科技项目（202447）; 浙江省教育厅一般科研项目（Y202455432） 第一作者: 陈 隆, 硕士研究生, 主要研究方向: 桥梁工程。E-mail: 1161495977@qq.com *通信作者: 丁 勇, 教授, 主要研究方向: 桥梁工程。E-mail: dingyong@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
