车辆荷载作用下钢混组合梁的疲劳性能

doi:10.13438/j.cnki.jdzk.2025.02.007

吉首大学学报（自然科学版） ›› 2025, Vol. 46 ›› Issue (2): 51-57.DOI: 10.13438/j.cnki.jdzk.2025.02.007

车辆荷载作用下钢混组合梁的疲劳性能

王建省，张建猛，贾玉梦

（北方工业大学土木工程学院，北京 100144）

出版日期:2025-03-25 发布日期:2025-04-30

Fatigue Performance of Steel-Concrete Composite Beams Under Vehicle Loads

WANG Jiansheng,ZHANG Jianmeng,JIA Yumeng

（School of Civil Engineering,North Polytechnic University,Beijing 100144,China）

Online:2025-03-25 Published:2025-04-30
About author:WANG Jianxing (1964-),male,was born in Beijing City,professor of School of Civil Engineering,North China University of Technology;research areas are civil engineering,ancient building structure,road and bridge structure.

摘要/Abstract

摘要：为了准确计算标准车辆荷载下钢混组合梁的疲劳损伤度及疲劳寿命，以某大跨钢混组合梁悬索桥的钢梁构件为研究对象，基于S-N曲线和线性疲劳损伤理论构建了标准节段模型，确定了次纵梁焊接位置为疲劳关注点，并对关注点进行了应力时程计算.研究结果表明，当车质量从50 t增加到100 t时，相同时间内疲劳损伤量会增加5倍以上，行车质量增加会降低桥梁结构的疲劳寿命；桥梁结构的疲劳损伤量随着车速的增加而增加，车速低时疲劳损伤量的增加速率较大，车速高时疲劳损伤量的增加速率较小.

关键词： 钢混组合梁, 车辆荷载, 疲劳

Abstract: In order to more accurately calculate the fatigue damage and fatigue life of steel-concrete composite beam under standard vehicle load,the steel beam components of a large-span steel-concrete composite beam suspension bridge were taken as the research object.Based on the S-N curve and linear fatigue damage theory,a standard segment model was established.Accordingly,the welding position of the secondary longitudinal beam was identified as the focus fatigue point,and the stress time course calculation was done for the point.The results showed that when the vehicle mass increases from 50 t to 100 t,the amount of fatigue damage will increase by more than 5 times in the same period of time,and the increase in the vehicle mass will reduce the fatigue life of the bridge structure.The fatigue damage of bridge structures increases with the increase of vehicle speed.The increase rate of fatigue damage is greater at low speeds,and the increase rate of fatigue damage slows down at high speeds.

Key words: steel-concrete composite beam, vehicle load, fatigue

王建省, 张建猛, 贾玉梦. 车辆荷载作用下钢混组合梁的疲劳性能[J]. 吉首大学学报（自然科学版）, 2025, 46(2): 51-57.

WANG Jiansheng, ZHANG Jianmeng, JIA Yumeng. Fatigue Performance of Steel-Concrete Composite Beams Under Vehicle Loads[J]. Journal of Jishou University(Natural Sciences Edition), 2025, 46(2): 51-57.

参考文献

[1] SHAO Changyu.Girder-Type Composite Structure Bridges[M].Beijing:China Construction Industry Press,2015.
[2] LI Xiaozhen,REN Weiping,WEI Xing,et al.Analysis of New Structural Types of Modern Steel Bridges and Their Fatigue Problems[J].Steel Structure,2006(5):50-55.
[3] TAN Hongxia,LI Jiannan,LI Lüe,et al.Dynamic Response of Simply Supported Girder Bridge Based on Different Loads and Vehicle Speeds[J].Journal of Jishou University (Natural Science Edition),2013,34(2):87-90.
[4] FARRERAS-ALCOVER ISAAC,CHRYSSANTHOPOULOS MARIOS K,ANDERSEN JACOB E.Data-Based Models for Fatigue Reliability of Orthotropic Steel Bridge Decks Based on Temperature,Traffic and Strain Monitoring[J].International Journal of Fatigue,2017,95:104-119.
[5] WANG Da,HAN Wanshui,HANG Pingming,et al.Influence of Bridge Deck Flatness on Coupled Vibration of Large-Span Suspension Bridge[J].Journal of Chang'an University (Natural Science Edition),2009,29(4):53-58.
[6] DENG Langni,ZHOU Zheng,HUANG Xiaoxia,et al.Experimental Study on the Fatigue Performance of Reinforced Concrete Beams Strengthened with Carbon Fibre-Grating Plates[J].Journal of Building Structures,2022,43(12):91-101.
[7] WANG Jiansheng,WANG Xinjie.Mechanical Properties of Cast-in-Place Prestressed Concrete Curved Box Girders[J].Journal of Jishou University (Natural Science Edition),2023,44(4):39-46.
[8] ZHAO Hongbing.Research on Fatigue Test and Remaining Life Prediction Method of Highway Reinforced Concrete Simply Supported Girder Bridge[D].Changsha:Central South University,2011.
[9] LU Naiwei,LIU Yang,DENG Yang.Fatigue Damage and Life Assessment of Steel Bridge Panels of Suspension Bridges Under Random Traffic Flow[J].Journal of Central South University (Natural Science Edition),2015,46(11):4300-4306.
[10] WANG Yunxiao.Fatigue Performance of Reinforced Concrete Bridges Based on Measured and Extrapolated Vehicle Data[D].Chongqing:Chongqing Jiaotong University,2020.
[11] ZHU Zhiwen,HUANG Yan,XIANG Ze,et al.Fatigue Performance of Steel Bridges with Curved Notches in Orthotropic Anisotropic Plates on Freight-Heavy Highways[J].China Highway Journal,2017,30(3):104-112.
[12] LEMMA MELAKU SEYOUM,GERVSIO HELENA,PEDRO JOSE OLIVEIRA,et al.Enhancement of the Life-Cycle Performance of Bridges Using High-Strength Steel[J].Structure and Infrastructure Engineering,2020,16(4):772-786.

车辆荷载作用下钢混组合梁的疲劳性能

Fatigue Performance of Steel-Concrete Composite Beams Under Vehicle Loads

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价