某混合式连续拱桥原位动载试验研究

IF 2.2 4区工程技术 Q2 ENGINEERING, CIVIL

Structural Engineering and Mechanics Pub Date : 2021-01-01 DOI:10.12989/SEM.2021.77.6.809

Hongye Gou, L. Liang, Yu Hong, Y. Bao, Q. Pu

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引用次数: 0

摘要

研究了三跨混合连续拱桥在车辆荷载作用下的动力特性。通过脉动试验，分析了桥梁的自振特性。在动载试验中，测试了桥梁在不同车速和不同路面条件下的振动，并测量了桥梁的挠度和加速度时程。在动加载试验的基础上，分析了冲击系数。结果表明，路面平整度对桥梁振动的影响大于货车车速对桥梁振动的影响。在货车的激励下，桥梁的竖向阻尼大于横向阻尼。共振发生在桥的侧跨下的卡车在10公里/小时。

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In-situ dynamic loading test of a hybrid continuous arch bridge

In this study, the dynamic behavior of a three-span hybrid continuous arch bridge under vehicle loading is investigated. The natural vibration characteristics of the bridge were analyzed through pulsation test. In the dynamic loading test, the vibrations of the bridge under different truck speeds and different pavement conditions were tested, and time histories of deflection and acceleration of the bridge were measured. Based on the dynamic loading test, the impact coefficient was analyzed. The results indicate that the pavement smoothness had more impacts on the vibration of the bridge than the truck's speed. The vertical damping of the bridge under the excitation of the trucks is larger than the transverse damping. Resonance occurs at the side span of the bridge under a truck at 10 km/h.

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来源期刊

Structural Engineering and Mechanics 工程技术-工程：机械

CiteScore

3.80

自引率

18.20%

发文量

审稿时长

11 months

期刊介绍： The STRUCTURAL ENGINEERING AND MECHANICS, An International Journal, aims at: providing a major publication channel for structural engineering, wider distribution at more affordable subscription rates; faster reviewing and publication for manuscripts submitted; and a broad scope for wider participation. The main subject of the Journal is structural engineering concerned with aspects of mechanics. Areas covered by the Journal include: - Structural Mechanics - Design of Civil, Building and Mechanical Structures - Structural Optimization and Controls - Structural Safety and Reliability - New Structural Materials and Applications - Effects of Wind, Earthquake and Wave Loadings on Structures - Fluid-Structure and Soil-Structure Interactions - AI Application and Expert Systems in Structural Engineering. Submission of papers from practicing engineers is particularly encouraged.