现浇钢筋混凝土工程中,钢筋的连接质量直接影响建筑结构的安全,近二十年以来钢筋连接的各项技术得到了极大的发展,且已成为施工的关键环节之一。八十年代中期以前,我国主要采用搭接绑扎方法连接钢筋。这种工艺依靠钢筋与混凝土的握裹力来保证连接强度。该工艺施工方便快捷,但连接强度 In the cast-in-place reinforced concrete project, the connection quality of the steel bars directly affects the safety of the building structure. The technology of the steel bar connection has been greatly developed in the recent two decades and has become one of the key links in the construction. Before the mid-eighties, China mainly used lap lashing method to connect steel. This process relies on the bond strength of steel and concrete to ensure the connection strength. The process of construction convenient, but the connection strength