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钢结构厂房单层压型板的加工及注意事项A、单层压型板加工前的准备
1、设备准备调整压型机的辊间隙、水平度和中线位置检查电源情况擦净辊上的油污,以免过程中粘污装修漆面的外观。检查长度测量仪器或工具是否准确。在工地现场加工时应注意设备放置在坚固平整的场地上,并应有遮雨措施。调整好压型机后应经过试压,试压后测量产品是否达到建筑用压型钢板GB/T12755-91规定后才能成批生产。
2、加工文件的准备加工前应具备加工清单。加工清单中注明板型、板厚、板长、块数、...钢结构厂房安装须符合规范要求方可进行安装1、地锚螺栓应达到螺栓中心偏移不大于于5mm,螺栓露出基础高度允许差不大于20mm,螺栓螺纹长度允差不大于20mm。
2、钢柱下底面标高在-5,8范围内。
3、钢柱梁挠曲矢高小于H/1000且不大于15mm。
4、柱轴线垂直度不大于10mm。
5、为使高强螺栓受力均匀,安装高强螺栓时要按先中间后两边的先后顺序安装,且高强螺栓的拧紧要分两次到三次进行,初拧及复拧的扭矩值相同均为终拧值的50%,其具体参数值如下
Tk?p?d
T初T×50%
T—终拧扭矩值...钢结构厂房主体施工需要注意的几大事项主要结构部件采用吊装,**起吊高度约12M,施工顺序为柱、屋架梁、围护结构。
1.柱的吊装
先复测完基础螺栓的位置,把螺栓上的附着砂浆清理干净。每柱在四个角上的螺栓分别安装一螺母,上标高为0.00.吊装就位后,采用两根缆风绳系牢,防止失稳,校正无误后,固定柱脚,然后安装柱间支撑,增加其相对稳定性。
2.屋面梁
钢梁吊装之前,在地面进行组装,这样不仅保证质量和工期,而且减少高空作业。所起吊钢柱柱脚附近便于起吊安装...钢结构零部件矫正,可一定要精准哟!1、所有型钢应在组装前和拼接后进行矫正调直,其采用机械矫正.矫正后型钢的弯曲,矢高为L/1000L为料长且不大于5mm.
2、节点板、连接板等也应可矫正,其局部平面度当板厚t≤14mm时,允许偏差为1.5mm,t>14mm时为1mm,根据板的尺寸,可采用手工或机械方法矫正。
3、用火焰矫正时,温度控制在800-900℃之间,不得超过900℃,加热后在空气中缓冷,避免在同一位置反复烘烤.
4、矫正后的钢材表面,不应有明显的凹面...钢结构厂房完工检验与验收标准有那些?1、GB985-2008气焊手工电弧焊及气保焊,焊缝坡口的基本形式与尺寸。
2、GB/T985.2-2008埋弧焊缝坡口基本形式和尺寸。
3、GB50205-2012钢结构工程施工及验收规范。
4、YSJ412-92轻金属冶炼机械设备安装工程及验收规范。
5、应符合设计图纸要求施工图纸说明。
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