Rapid testing and evaluation of bridges based on moving load test

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Jun.2024, Vol.47 No.6: 849-855

DOI: 10.3969/j.issn.1003-5060.2024.06.020

Authors

XIONG Liang $ ^{1} $, LI Junfei $ ^{2} $, CHENG Huacai $ ^{3} $, LI Zibing $ ^{3} $, HE Wenyu $ ^{2} $

(1. Anhui Transportation Holding Group Co., Ltd., Hefei 230088, China; 2. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China; 3. Anhui Expressway Engineering Test and Research Center Co., Ltd., Hefei 230031, China)

Abstract and Keywords

Abstract: This paper proposes a rapid testing and evaluation method based on moving load test for bridges, and applies it to a long-span continuous girder bridge with variable cross section successfully. Firstly, the bridge flexibility matrix identification method based on the moving vehicle induced dynamic response is briefly introduced. Then, the approach and procedure for calculating the deflection verification coefficient based on flexibility matrix are proposed to evaluate bridge conditions. Finally, the effectiveness and efficiency of the proposed bridge evaluation method are verified by numerical example and field test.

Keywords: bridge evaluation; moving vehicle; rapid testing; flexibility matrix; verification coefficient

作者信息

熊亮 $ ^{1} $，黎骏飞 $ ^{2} $，程华才 $ ^{3} $，李子兵 $ ^{3} $，贺文宇 $ ^{2} $

（1. 安徽省交通控股集团有限公司，安徽合肥 230088；2. 合肥工业大学土木与水利工程学院，安徽合肥 230009；3. 安徽省高速公路试验检测科研中心有限公司，安徽合肥 230031）

摘要和关键词

摘要: 文章提出一种基于移动荷载试验的桥梁快速测试与评定方法，并成功应用于一座实际运营的大跨径变截面连续梁桥。首先简单介绍基于移动车辆激励下桥梁动力响应的桥梁柔度矩阵识别方法；其次提出基于柔度矩阵的桥梁挠度校验系数计算的方法和流程，实现对桥梁状况的评定；最后通过数值算例和实桥试验验证所提出的桥梁评定方法的有效性和高效性。

关键词: 桥梁评定；移动车辆；快速测试；柔度矩阵；校验系数

Funding

安徽省自然科学基金资助项目（2208085J20）；安徽省交通控股集团有限公司科技资助项目（JKKJ-2021-01）

合肥工业大学学报(自然科学版)

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