吉林松江大桥球形钢板支座更换施工

On Spherical Plate Bearing Replacement Construction of Songjiang Bridge in Jilin

吉林市松江大桥球形钢板支座严重锈蚀、支座功能丧失,于是采用龙门吊对该桥梁水上部分的支座进行更换。介绍了施工所采用的机具设备,详细给出了龙门吊吨位的选择计算。介绍了龙门吊、吊杆系统及管线保护吊杆的安装,指出了T梁顶升、支座切割及安装橡胶支座等关键节点的要点。最后列出了施工的13个详细步骤。

Due to spherical plate bearing of Jilin Songjiang Bridge being into serious corrosion condition and loosing bearing function,portal crane is used in replacement of the bearing above the water.The chosen machines & tools are introduced,and the choosing calculation of portal crane tonnage is given in detail.Then,these installations of portal crane,suspender system and pipelines protection for suspender are carried out with several key points of key nodes such as T beam jacking,bearing cutting and fixing rubber bearing.Finally,there are 13 detailed construction procedures listed in the paper.