缆上柔性轨道负载走行架梁设备横向抗倾覆稳定性研究  

Study on Lateral Anti-overturning Stability of Loaded Traveling Erection Equipment of Flexible Track on Cable

作　　者：胡伟 宋向荣[1,3] 李冕 彭成明 彭鹏[1,3] HU Wei;SONG Xiang-rong;LI Mian;PENG Cheng-ming;PENG Peng(CCCC Second Harbor Engineering Company Ltd.,Wuhan,Hubei 430040,China;Key Laboratory of Long-span Bridge Construction Technology,Wuhan,Hubei 430040,China;Research and Development Center of Transport Industry of Intelligent Manufacturing Technology of Transport Infrastructure,Wuhan,Hubei 430040,China)

机构地区：[1]中交第二航务工程局有限公司,湖北武汉430040 [2]长大桥梁建设施工技术交通行业重点实验室,湖北武汉430040 [3]交通运输行业交通基础设施智能制造技术研发中心,湖北武汉430040

出　　处：《公路交通科技》2024年第7期110-117,共8页Journal of Highway and Transportation Research and Development

摘　　要：针对设备在负载行走过程中存在的倾覆风险,建立了缆上柔性轨道负载走行架梁设备的基本力学模型,从设备一般受力状态、横向抗倾覆稳定性分析方法、稳定性影响因素、结构优化、姿态调控措施等方面开展了深入研究。首先,将容许最大不平衡吊点力作为设备横向稳定性的评估指标,分析了7种稳定性影响因素与2种失稳方式,推导出了简化的稳定性计算公式,并给出了数值计算方法,计算误差在2%左右;然后,通过参数敏感性分析提取出设备稳定性的关键影响因素,9个敏感参数中,行走小车结构尺寸对设备横向稳定性的影响最大,风荷载、吊点荷载及行走承重索张拉力次之,行走小车自重、行走承重索张拉力不均匀系数的影响最小,并以此为基础对设备结构形态与质量进行了优化设计,将设备的横向抗倾覆稳定性提高了9.4%;最后,制订了4种典型工况下的设备姿态控制标准,为保证设备运行安全,负载时应控制设备与猫道不发生碰撞,空载时控制横向偏转角度不超过5.39°,并结合参数敏感性分析结果,提出了2条设备横向姿态控制措施,可及时有效地修正设备姿态,使其始终保持在最佳的行走姿态。Aiming at the overturning risk of equipment in the loaded traveling process,the basic mechanical model of equipment was established.The study carried out deep research on the general stress state of equipment.The analysis method for lateral anti-overturning stability,influencing factors on stability,structural optimization,attitude control measures,etc.First,the allowable maximum unbalanced lifting force was taken as the evaluating indicator of lateral stability of equipment.7 stability influencing factors and 2 instability modes were analyzed.The simplified stability calculation formula was derived.The numerical calculation method was presented,whose calculation error was about 2%.Then,the key factors affecting equipment stability were extracted by using parameter sensitivity analysis.The equipment structure and weight were optimized based on this.Among 9 sensitive parameters,the equipment structure size had the greatest influence on equipment stability,followed by the wind load,lifting point load,and tension force of walking load-bearing cable.The weight of equipment and uneven coefficient of tension force of walking load-bearing cable had the least influence.The lateral anti-overturning stability of equipment increased by 9.4% after optimization.Finally,the equipment attitude control standards under 4 typical working conditions were formulated.To ensure the safety of equipment,the collision between equipment and catwalk should be controlled when loaded,and the lateral deflection angle should not exceed 5.39° when unloaded.Combined with the result of parameter sensitivity analysis,2 lateral attitude control measures of equipment were proposed,which can correct the attitude of equipment in time and effectively,so that it can always maintain the best traveling attitude.

关 键 词：桥梁工程 负载走行架梁设备 参数敏感性分析 抗倾覆稳定性 优化设计 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]