Concrete Filled Steel Tube Column And Wide Beam Connection: Proposed Structures and Experiment

Abstract

Structural solutions utilizing concrete filled steel tube (CFST) column and reinforced concrete (RC) wide beams are used effectively in high-rise buildings, especially for large span. Currently, there have not been many theoretical and experimental researches on CFST column - RC wide beam connection to ensure the effectiveness of this structure type. Moreover, there have not been any experimental researches on the connection of CFST column – Prestressed concrete (PC) wide beam, as well as on assessing the effect of prestressed cables and shear head shape on the shear strength of the connection. This paper proposes connection structures; conducts experimental program, analyzes and compares different types of connections between CFST column and RC, PC wide beam using large size specimens to evaluate the actual behavior of proposed connections. Experimental results give a better view of the effect of shear-head shape as well as the prestressed force on the shear strength of the wide beam at the connections.