摘要
文章针对公路桥梁的车桥耦合振动问题,提出基于ANSYS单一环境下的车桥耦合振动响应数值分析方法。该方法将桥梁与车辆模型均独立建立于ANSYS环境下,其耦合作用关系通过APDL编程语言计算并将其在任意时刻施加于车辆及桥梁结构,最终得到振动的时程响应。通过与既有文献的对比及实桥试验测试,验证了该方法的正确性。以连续刚构桥梁为背景,结合正交试验理论,通过16个计算工况的分析得到各影响因素对车桥耦合振动响应的敏感性排名。结果表明,冲击系数影响程度排名前3位通常包含车质量、行驶速度以及桥面平整度因素,但对于不同类型的冲击系数研究对象,敏感性参数排名亦存在不同。
To study the response of vehicle-bridge coupled vibration of highway bridge ,a numerical analysis method of vehicle-bridge coupled vibration based on ANSYS is presented .The bridge model and vehicle model are estab-lished in ANSYS environment separately and its coupled vibration relationship is calculated by APDL language and imposed on vehicles and bridge structures at any time to get the vibration schedule response .The validity of this method is proved by the comparison with the present literature and the experimental results .By using the orthogonal test ,and based on the analysis of 16 conditions ,the significance of the effect of each factor on the sensitivity of the response of coupled vibration is obtained in view of the bridges of continuous rigid frame system .The result shows that the surface roughness ,vehicle weight and velocity have the most effective influence on impact factor ,and the rank for the factors of the sensitive parameters changes along with the different types of impact factor .
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第8期901-906,共6页
Journal of Hefei University of Technology：Natural Science
基金
国家自然科学基金资助项目(51008028)
中央高校基本科研业务专项资金资助项目(CHD2011JC155)
关键词
桥梁工程
车桥耦合振动
正交试验方法
敏感性参数分析
冲击系数
bridge engineering
vehicle-bridge coupled vibration
orthogonal test
sensitive parameter analysis
impact factor
