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大慶鋼結構在安全前的質(zhì)量如何控制？

?鋼結構是由鋼制材料組成的結構，是主要的建筑結構類型之一。結構主要由型鋼和鋼板等制成的鋼梁、鋼柱、鋼桁架等構件組成，并采用硅烷化、純錳磷化、水洗烘干、鍍鋅等除銹防銹工藝。各構件或部件之間通常采用焊縫、螺栓或鉚釘連接。因其自重較輕，且施工簡單，廣泛應用于大型廠房、場館、超高層等領域。鋼結構容易銹蝕，一般鋼結構要除銹、鍍鋅或涂料，且要定期維護。

①安裝前，施工單位應對構件的產(chǎn)品合格證、設計文件與預拼裝記錄進行檢查，并復驗記錄構件的尺寸。鋼結構的變形、缺陷超出允許偏差時，應進行處理。
安裝前，應編制詳細的測量和矯正工藝，厚鋼板的焊接應在焊接安裝前進行模擬產(chǎn)品結構的工藝試驗，編制相應的施工工藝。對拼裝好的屋架應預設一定的起拱度。
②鋼結構吊裝就位后，應對構件定位軸線、標高等設計要求控制點進行測量做好標記，對吊裝對接接頭質(zhì)量進行焊前檢查。安裝好臨時支撐及鋼浪索以使鋼屋架在施工過程中安全穩(wěn)定。
③鋼結構安裝時，施工單位應提交每榀構件吊裝后的標高尺寸、焊接、涂裝等分別向監(jiān)理提交驗收。

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