[1]张玮.重载交通路段的桥梁汽车荷载效应评估[J].福建工程学院学报,2022,20(01):42-47.[doi:10.3969/j.issn.1672-4348.2022.01.007]
　ZHANG Wei.Assessment of vehicle load effects of bridges in heavy-loaded traffic sections[J].Journal of FuJian University of Technology,2022,20(01):42-47.[doi:10.3969/j.issn.1672-4348.2022.01.007]
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重载交通路段的桥梁汽车荷载效应评估()
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《福建工程学院学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第20卷
期数:
2022年01期
页码:
42-47
栏目:
出版日期:
2022-02-25

文章信息/Info

Title:
Assessment of vehicle load effects of bridges in heavy-loaded traffic sections
作者:
张玮
福建省建筑工程质量检测中心有限公司
Author(s):
ZHANG Wei
Fujian Construction Engineering Quality Inspection Center Co., Ltd.
关键词:
桥梁工程; WIM数据; 重载交通; 荷载效应; 冲击系数
Keywords:
bridge engineering;  weigh-in-motion data;  heavy-loaded traffic;  load effect;  dynamic impact factor
分类号:
U441
DOI:
10.3969/j.issn.1672-4348.2022.01.007
文献标志码:
A
摘要:
基于某公路桥梁采集的16个月动态称重(weigh in motion，WIM)数据，计算了随机车流激励作用下桥梁结构的动态位移响应时程以及梁肋的跨中弯矩值和支点剪力值。结果表明:桥址车辆存在显著的超载行为，随机车流作用下梁肋跨中弯矩是规范计算值的1.00~1.38倍，支点剪力是规范计算值的1.71~1.94倍，需要特别关注。研究结果可以为该桥后续的健康监测和车辆管理提供决策依据，也可以为其他重载交通路段的荷载模型建立提供借鉴。
Abstract:
A duration of 16-month weigh-in-motion(WIM) data was collected at a highway bridge. The time-history of the dynamic displacements of the bridge as well as the mid-span bending moment and side-support shear force of each girder under the excitation of random traffic were obtained. Results show that there were a significant number of overloaded trucks on the bridge site. The mid-span bending moments of each girder component under random traffic loadings were 1.00~1.38 times of those calculated by code-based traffic load models, whereas the side-support shear force was 1.71~1.94 times of the standard calculated value, which requires special attention. This result could provide a decision-making basis for subsequent health monitoring and traffic management of the bridge, and also gave insights for the construction of site-specific traffic load models in other heavy-loaded traffic sections.

参考文献/References:

[1] 中华人民共和国交通运输部. 2020年交通运输行业发展统计公报[R]. 北京: 中华人民共和国交通运输部, 2021.05.19.[2] 胡斯然, 周博闻, 张天宇. 基于交通大数据的超限超载车辆时空分析[J]. 公路, 2020, 65（8）: 349-359. [3] 王枫, 吴华勇, 赵荣欣. 国内外近三年桥梁坍塌事故原因与经验教训[J]. 城市道桥与防洪, 2020（7）: 73-76, 13.[4] 刘少辉, 颜全哲, 杨佳毅, 等. 福建省重载交通公路桥梁疲劳荷载模型研究[J]. 福建交通科技, 2017（4）: 119-122.[5] 周军勇, 石雪飞, 阮欣, 等. 高速公路分车道荷载差异及其响应特性[J]. 同济大学学报（自然科学版）, 2018, 46（4）: 458-464.[6] 李占峰, 吴庆雄, 陈康明. 基于WIM系统的重载车辆模型及其荷载效应分析[J]. 公路, 2019, 64（2）: 147-155.[7] 颜全哲, 卓卫东, 王志坚, 等. 利用动态称重技术的福建省重载交通公路车辆荷载模型[J]. 福州大学学报（自然科学版）, 2021, 49（3）: 421-427.[8] 周军勇, 苏建旭, 齐飒. 基于元胞自动机微观模拟的随机车流与桥梁耦合振动数值研究[J]. 工程力学, 2021, 38（2）: 187-197. [9] ZHOU J Y, RUAN X, SHI X F, et al. An efficient approach for traffic load modelling of long span bridges[J]. Structure and Infrastructure Engineering, 2019, 15（5）: 569-581.

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更新日期/Last Update: 2022-02-25