Outdoor Brand Steel Structure Annual Inspection Season: Bolt and Weld Inspection

Outdoor Brand Steel Structure Annual Inspection Season: Bolt and Weld Inspection

Annual inspections and pre-rainy season concentrated checks are standard procedures for outdoor billboards and steel column structures. We schedule these annual inspections during the designated window: before work begins, verify drawings and component IDs, establish a safety perimeter, and inspect the condition of the vehicle-mounted articulated boom lift, basket, and outriggers (Image 1 shows equipment staged in the workshop).

年检窗口与前置准备

进入雨季前的集中巡检,是户外大牌与立柱钢结构的常规动作。我们把年检固定在窗口期执行:作业前核对图纸与构件编号,划定警戒区,检查车载折臂平台、吊篮与支腿状态(配图一为车间内设备待命状态的现场记录),风力达到限值即停止高空作业,人员持证上岗并系挂安全带。

螺栓复拧与防松标记

受力节点螺栓在长期风振与温差下会松动。检查按节点顺序进行:目视看有无缺失与外露丝扣异常,扭矩扳手复拧,达标后做防松标记。同一批次抽检比例与记录口径统一,发现松动即成组复拧,不做逐个处理,避免受力不均。

焊缝外观与探伤分层

角焊缝先清表面锈蚀与旧涂层,检查有无裂纹、咬边与气孔。外观存疑部位转入无损检测,用渗透或超声手段定位内部缺陷。返修需清根后重焊,按原定焊接工艺补做防腐,工艺参数与返修记录一并归档。

涂层测厚与基础复查

用测厚仪抽查干膜厚度,重点在底部、焊缝两侧与积水凹槽。膜厚不足的部位成批补涂,不做单点糊弄。基础部位查沉降、开裂与积水排放,接地电阻按规范复测,防雷引下线连接点除锈后紧固,螺栓垫圈补齐。

画面与电气同步过一遍

面板与LED模组逐块检查紧固与密封胶,电源与线缆查老化、进水与端子发热痕迹。通电后观察亮暗块与色差,按点位编号记录,为后续模组更换留依据。

吊装环节的现场管控

大牌箱体与面板分块起吊,吊点按构件重心选定,钢丝绳与卸扣作业前逐件检查。配图二为一次箱体分块吊装的现场记录:吊车支腿全部展开并垫实,作业半径内清场,起吊与载人作业不同时进行。

高空与地面的配合

吊篮内人员负责对位与紧固,地面人员扶稳引导并传递工具,配件用吊绳提升,不抛掷。面板就位后先临时固定,校正接缝与平整度再全部紧固,避免累积误差。

资料归档形成年度对比

巡检记录含构件照片、扭矩实测值与缺陷分级,按编号入档。次年巡检直接对比同一节点的变化速率,判断是继续观察还是安排返修。归档口径一年一套,责任人与复核人分列,避免换人后无从追溯。

闭环管理与本地适配

检查结束出具构件清单与问题分级,明确整改责任与复核节点。重庆湿度大、雨期长,钢构腐蚀速度偏快,我们建议业主把复紧、补涂与年度巡检写进维护计划,而不是等问题暴露再处理。



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Yu ICP Be 18012268 No. -2