横向拖拉法是营业线上更换小跨度单线钢梁的常用方法,但应用该法更换较大跨度的双线钢梁尚属少见。京津间北运河桥是7孔跨度31.7米双线半穿式桁梁,由我处天津桥隧大修队用该法同时在双线每次封闭线路160分钟换梁成功。其工程概况简介如下。 Lateral drag method is a common method of replacing a single-span steel beam with a small span on a business line. However, it is still rare to apply this method to replace a large span steel beam. Beiju Canal Bridge between Beijing and Tianjin is a 7-hole span 31.7 meters double-line half-pierced truss girder, by our Tianjin Bridge Tunnel overhaul team with the law at the same time in the closed double-lane line every 160 minutes to change the beam success. The project profile is as follows.