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门式脚手架是世界上近20年发展起来的一种较为现代化的施工工具。我国从80年代起逐渐推广应用,而且开始用于中高层建筑施工的外脚手架工程中。以往高层建筑较少,且极少搭设满堂外脚手架。对于多层建筑,其外脚手架高度不很高,且采用φ48t=3.5mm钢管扣件脚手架,只要按有关规定搭设,架子的强度与刚度均能满足,一般可不经过计算。但对于高度较高,且荷载较大
Portal scaffolding is a relatively modern construction tool developed in the world for nearly 20 years. Our country has gradually promoted and applied it since the 1980s, and it has also begun to be used in the construction of outer scaffolding for middle and high-rise buildings. In the past, there were few high-rise buildings and few scaffoldings were erected. For multi-story buildings, the height of their scaffolds is not very high, and φ48t=3.5mm steel pipe fastener scaffolds are used. As long as they are erected in accordance with relevant regulations, the strength and rigidity of the rack can be satisfied, and generally it is not necessary to calculate. But for higher heights and higher loads