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钢筋混凝土结构在大跨度、高耸建筑物中的应用日益广泛,大直径钢筋的采用越来越多。随之带来了大直径钢筋的可靠连接问题,特别是承受地震、风荷等动荷载作用的大直径钢筋的可靠连接,更为人们所关心。 目前,我国常用的钢筋连接方法有电弧焊、电渣压力焊、气压焊及搭接接头等。这些连接方法,程度不同的存在一些缺点和弊端。搭接接头的缺点是接头耗费钢材多,钢筋传力性能差,设计规范规定,当钢筋直径大于25mm时,不应采用非焊接的搭接接头。由弧焊效率
Reinforced concrete structures are widely used in large-span and towering buildings, and more and more large-diameter steel bars are used. As a result, reliable connection of large-diameter steel bars has been brought about, especially for the reliable connection of large-diameter steel bars subjected to dynamic loads such as earthquakes and wind loads. At present, China’s commonly used method of connecting steel arc welding, electro-slag pressure welding, pressure welding and lap joints. These connection methods, to some extent, have some disadvantages and disadvantages. The disadvantage of lap joints is that the joints consume more steel and the force transmission performance of the reinforcing bars is poor. The design specifications stipulate that non-welded lap joints should not be used when the reinforcing bar diameter is greater than 25 mm. By arc welding efficiency