《钢支撑 幻灯片》.ppt

钢支撑施工;;2019/11/20;2019/11/20;Urban Mass Transit Engineering Co.,Ltd of China Railway 11th Construction Bureau Group ;1.钻孔桩打眼;2.挂线上托架;3.托架完成;6.钢围檩架设;Urban Mass Transit Engineering Co.,Ltd of China Railway 11th Construction Bureau Group ;Urban Mass Transit Engineering Co.,Ltd of China Railway 11th Construction Bureau Group ;Urban Mass Transit Engineering Co.,Ltd of China Railway 11th Construction Bureau Group ;;4.地面拼装钢支撑 ;5.地面拼装钢支撑 ;Urban Mass Transit Engineering Co.,Ltd of China Railway 11th Construction Bureau Group ;8.转向器焊接;9.钢支撑架设;;11.钢支撑加力;12.钢支撑加力;;; 施工控制要点;3.安装： 钢支撑安装按图纸设计要求，所有支撑拼接必须顺直，每次安装前先抄水平标高，以支撑的轴线拉麻线检验支撑的位置。斜撑支撑轴线要确保与钢牛腿或托架端承水平垂直。 4.准确施加支撑预应力： 每道支撑安装后，及时按设计要求施加预应力，预应力施加至设计要求加钢楔顶紧后，方可拆除千斤顶。支撑下方的图在支撑未加预应力前不得开挖。对施加预应力的油泵装置经常检查，使之运行正常，所量出预应力准确，每根支撑的施加预应力值要记录备查，施加预应力时，要及时检查每个接点的情况，并做好施加预应力的记录;5.所有的焊缝必须满焊，焊缝表面要求焊波均匀，不准有汽孔、夹渣、裂纹、肉瘤等现象，防止虚假焊。 6.使用螺栓拼接钢支撑，必须穿向一致，两次旋紧，螺栓外露不得少于两牙 7.钢支撑安装质量标准 支撑中心标高及同层支撑顶面的标高差：±30mm 支撑两端的标高差：不大于20mm及支撑长度的1/600 支撑挠曲度：不大于支撑长度的1/1000 支撑水平轴线偏差：不大于30mm ; 安全风险源浅议;;dsfdbsy384y982ythb3oibt4oy39y409705923y09y53b2lkboi2y58wy0ehtoibwoify98wy049ywh4b3oiut89u983yf9ivh98y98sv98hv98ys9f698y9v698yv98x98tb98fyd98gyd98h98ds98nt98d8genklgb4klebtlkb5k tkeirh893y89ey698vhkrne lkhgi8eyokbnkdhf98hodf hxvy78fd678t9fdu90gys98y9shihixyv78dfhvifndovhf9f8yv9onvkobkw kjfegiudsfdbsy384y982ythb3oibt4oy39y409705923y09y53b2lkboi2y58wy0ehtoibwoify98wy049ywh4b3oiut89u983yf9ivh98y98sv98hv98ys9f698y9v698yv98x98tb98fyd98gyd98h98ds98nt98d8genklgb4klebtlkb5k tkeirh893y89ey698vhkrne lkhgi8eyokbnkdhf98hodf hxvy78fd678t9fdu90gys98y9shihixyv78dfhvifndovhf9f8yv9onvkobkw kjfegiu dsfdbsy384y982ythb3oibt4oy39y409705923y09y53b2lkboi2y58wy0ehtoibwoify98wy049ywh4b3oiut89u983yf9ivh98y98sv98hv98ys9f698y9v698yv98x98tb98fyd98gyd98h98ds98nt98d8gen;56384866666gjfdghmghm56384866666gjfdghmghm56384866666gjfdghmghm56384866666gjfdghmghm56384866666gjfdghmghm56384866666gj