Study on blind-bolted split tee connections to concrete-filled steel tubes for steel moment-frame buildings

Abstract

This paper presents an alternative solution to conventional welded moment-resisting frame for circular hollow sections using blind bolts and double split tee connections. The easily installed blind bolts from one side offer great convenience for on site practice. Testing on T-stub components to circular column segments in tension shows that this type of connection has great strength and stiffness to be qualified for transferring moment within the composite structural frame. Cogged extensions to the blind bolts improve the tensile behaviour of the T-stub connection. The paper presents results from a detailed analytical study and comparison with experimental investigation. The strength hierarc..