论文部分内容阅读
城市钢箱梁高架桥球形支座安装主要控制安装方向、高程、位移等;球形支座安装前进行基础复测及支座顶板与钢箱梁底板焊接,焊接采用焊条电弧焊方法,并进行焊前温度不低于200℃预热处理。球形支座安装用钢楔形垫块将下支座板四角调平。球形支座灌浆先灌地脚螺栓孔,灌完24h达到强度后再灌支座底面预留的灌浆层,最后拆除四角钢楔形垫块用环氧砂浆填满垫块位置。钢箱梁卸载后进行焊接垫板与钢箱梁底板焊接,焊接完毕后拆除临时连接件,并安装防尘罩。支座高程允许偏差控制在±3mm以内,支座偏位允许偏差控制在2mm以内。
Urban steel box girder viaduct ball bearing installation mainly controls the installation direction, elevation, displacement, etc .; spherical bearing pre-installation re-testing and bearing roof and steel box girder floor welding, welding using arc welding method, and the welding before The temperature is not less than 200 ℃ preheat treatment. Spherical bearing installation of steel wedge pad to the lower four corners of the flat. Spherical bearing grouting irrigation first anchor bolt hole, after irrigation finished 24h strength to reach the bottom of the filling grout reservoirs, and finally remove the four corners of the wedge pad filled with epoxy mortar pad position. After the steel box girder is unloaded, the welding pad and the steel box girder bottom plate are welded, and after the welding is completed, the temporary connecting pieces are removed and a dust cover is installed. Support elevation deviation tolerance control within ± 3mm, bearing deviation allow deviation control within 2mm.