钢结构建筑施工过程将面临哪些问题

发布时间:2020-04-14

钢结构建筑施工过程将面临哪些问题

2026-03-04 10 次阅读 0 条评论
钢结构建筑施工过程将面临哪些问题
发布时间:2020-04-14

钢结构因其自身优点:1. 大大节约施工时间不受季节影响;2. 增大住宅空间使用面积减少建筑垃圾和环境污染;3. 建筑材料可重复利用拉动其他行业的发展;4. 抗震性能好使用中易于改造,灵活方便能给人带来舒适感。在桥梁、工业厂房、高层建筑等现代建筑中得到广泛应用。在大量的工程建设过程中,钢结构工程也暴露出不少质量通病。

钢结构工程施工过程中可能会遇到门式钢架所用的板件很薄,最薄可用到4毫米。多薄板的下料应首选剪切方式而避免用火焰切割。因为用火焰切割会使板边产生很大的波浪变形。目前H型钢的焊接大多数厂家均采用埋弧自动焊或半自动焊。如果控制不好宜发生焊接变形,使构件弯曲或扭曲。

钢结构柱底脚有空隙预控措施钢柱吊装前,应严格控制基础标高,测量准确,并按其测量值对基础表面仔细找平;如采用二次灌浆法,在柱脚底板开浇灌孔(兼作排气孔),利用钢垫板将钢柱底部不平处垫平,并预先按设计标高安置好柱脚支座钢板,然后采取二次灌浆。钢结构钢柱位移预控措施浇筑混凝土基础前,应用定型卡盘将预埋螺栓按设计位置卡住,以防浇灌混凝土时发生位移;柱低钢板预留孔应放大样,确定孔位后再作预留孔。柱垂直偏差过大预控措施钢柱应按计算的吊挂点吊装就位,且必须采用二点以上的吊装方法,吊装时应进行临时固定,以防吊装变形;柱就位后应及时增设临时支撑;对垂直偏差,应在固定前予以修正。

在施工的时候严重性也是需要我们重视的,如果影响了施工的话也会造成倒塌、断裂等事故的发生,钢结构的可变性也很强,随着外界的时间不断加长、各种恶劣环境等影响,钢结构的质量也会在逐渐改变,一旦钢结构建筑的时间超过5年之后就需要进行维护,另外钢结构在温度低的情况下也会发生脆性断裂的情况后期都是要注意的。





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