随着公路交通运输事业的发展,桥梁伸缩装置使用过程中各种问题日益突出,跳车现象严重、噪声污染和耐久性不良等问题,已成为困扰各国桥梁建设和管理养护部门的难题。桥梁伸缩装置的存在,使车辆通过时产生跳跃和冲击,使司乘人员感到颠簸不适,甚至造成车辆大幅度减速,严重的可导致交通事故。同时,据桥梁养护部门不完全统计,全国每年因伸缩装置型钢震动引起的型钢锚固混凝土开裂渗水, With the development of highway traffic and transportation, various problems in the process of using bridge expansion and contraction devices have become increasingly prominent. The problems of serious jumping, serious noise pollution and poor durability have become problems that plague bridge construction and management and maintenance departments in various countries. The existence of the bridge expansion device causes the vehicle to jump and impact as it passes through, causing the driver and crew members to feel bumpy and uncomfortable, causing the vehicle to slow down substantially and causing serious traffic accidents. At the same time, according to the incomplete statistics of the bridge maintenance department, cracking and seepage of the section steel anchoring concrete caused by the vibration of the telescopic device section every year in the country,