探究铁路桥梁减震卡榫的设计与应用性能  

Exploration on the Design and Application Performance of Seismic Tenon for Railway Bridges

作　　者：张钊 Zhang Zhao

机构地区：[1]柳州铁道职业技术学院,广西柳州545616

出　　处：《时代汽车》2024年第15期172-174,共3页Auto Time

基　　金：广西高校中青年教师科研基础能力提升项目“基于拉索减震支座技术的铁路连续梁桥抗震性能研究”(编号2023KY1440)。

摘　　要：本文针对铁路桥梁在地震中的安全问题,提出了一个创新的减震卡榫设计与应用方案。该方案结合了摩擦摆式支座和减震卡榫,旨在限制桥梁在地震下的位移,防止梁体碰撞和落梁,同时提高下部结构的受力能力。通过模拟和实桥应用检算,该组合隔震支座系统展示了其在地震响应控制上的优势。研究结果表明,这种新型支座系统不仅能有效限制中小地震下的位移,还能在大地震中提供额外的保护,防止严重震害。此外,该系统的设计原理和构造形式使其易于安装、检查和维护,有助于降低长期维护成本。In view of the safety of railway bridges in earthquakes,this paper proposes an innovative design and application scheme of shock-absorbing tenon.The scheme combines friction pendulum bearings and shock-absorbing tenons to limit the displacement of the bridge under earthquakes,prevent beam collisions and falling beams,and improve the mechanical capacity of the substructure.Through simulation and real-bridge application calculations,the combined seismic isolation bearing system demonstrates its advantages in seismic response control.The results show that this new support system can not only effectively limit the displacement under small and medium-sized earthquakes,but also provide additional protection against severe seismic damage in large earthquakes.In addition,the design principle and construction of the system make it easy to install,inspect and maintain,helping to reduce long-term maintenance costs.

关 键 词：铁路桥梁 减震卡榫 桥梁性能 

分 类 号：U44[建筑科学—桥梁与隧道工程]