基于轮轨驱动的新型桥梁转体装置力学性能研究  

Research on the mechanical performance of a novel bridge swivel device based on wheel-rail drive

作　　者：石岩 杜兴平 杨伟民 徐耀耀 辛宇 Shi Yan;Du Xingping;Yang Weimin;Xu Yaoyao;Xin Yu(Design and Research Institute of China Tiesiju Civil Engineering Group Co.,Ltd.,Hefei Anhui 230023,China;Hefei University of Technology,Hefei Anhui 230009,China)

机构地区：[1]中铁四局集团有限公司设计研究院,安徽合肥230023 [2]合肥工业大学,安徽合肥230009

出　　处：《山西建筑》2024年第1期138-142,共5页Shanxi Architecture

基　　金：中铁四局集团科技开发计划重点课题(2021-50)。

摘　　要：转体施工在跨越既有线路的桥梁建设中得到广泛应用,针对传统桥梁转体装置存在的控制性不强、转速不均、转角超限等工程难题,以合肥市文忠路上跨合肥东站立交桥为载体,从转体施工的转动设备与转动能力入手,提出了基于轮轨系统驱动的新型桥梁转体施工装置,增强了桥梁转体施工的精确性和可操作性;为验证装置的可行性和可靠性,通过精细化有限元模拟,探究装置在不同齿轮摩擦因数、球铰静摩擦系数以及齿轮宽度下的受力性能。通过对上述影响因素的分析结果表明,球铰静摩擦系数对齿轮及球铰受力性能的影响最显著;齿轮宽度对小齿轮系统峰值应力降低的贡献率,随着宽度的增长而逐渐降低;齿轮摩擦因数对轮轨系统的受力影响较小。所提出的新型转体装置能够安全、可靠地用于桥梁转体施工,为实现桥梁结构的精确化转体施工提供了重要的技术支撑。Swivel construction is widely used in bridge construction across existing lines.Aiming at the engineering problems of traditional bridge swivel devices,such as weak control,uneven speed,and out of limit corner,taking Wenzhong Road overpass of Hefei East Railway Station as the carrier,starting from the rotating equipment and rotating capacity of swivel construction,a new type of bridge swivel construction device driven by wheel rail system is proposed,enhanced the accuracy and operability of bridge swivel construction;to verify the feasibility and reliability of the device,a refined finite element simulation was conducted to investigate the mechanical performance of the device under different gear friction coefficients,ball joint static friction coefficients,and gear width.The analysis of the above influencing factors shows that the static friction coefficient of the ball joint has the most significant impact on the mechanical performance of the gear and ball joint;the contribution rate of gear width to the reduction of peak stress in the pinion system gradually decreases as the width increases;the friction coefficient of gears has a relatively small impact on the force acting on the wheel rail system.The proposed new swivel device can be safely and reliably used for bridge swivel construction,providing important technical support for achieving precise swivel construction of bridge structures.

关 键 词：桥梁结构 转体施工 轮轨系统驱动 有限元 受力性能 

分 类 号：TU997[建筑科学—市政工程]