BEHAVIOR AND STRENGTH OF RC COLUMNTO （行为和RC COLUMNTO强度）.pdfVIP

1485 BEHAVIOR AND STRENGTH OF RC COLUMN-TO-STEEL BEAM CONNECTIONS SUBJECTED TO SEISMIC LOADING 1 2 Gustavo J PARRA-MONTESINOS And James K WIGHT SUMMARY The seismic behavior of reinforced concrete column-to-steel beam (RCS) connections is studied in this paper. Experimental results from the tests of nine exterior RCS joints subjected to large load reversals are presented. Also, a simple model to predict the shear strength of RCS connections is proposed. The influence of different joint details on the seismic response of the connections is discussed. These joint details are two-part U-shaped stirrups passing through drilled holes in the steel beam web, steel cover plates or band plates surrounding the joint region, dowel bars attached to the steel beam flanges, and steel fiber concrete or engineered cementitious composite (ECC) material in the connection. Experimental results indicate that RCS frames are suitable for use in high seismic risk zones. In addition, good agreement was found between experimental results and the shear strengths predicted by the proposed model. INTRODUCTION The use of hybrid structures has gained popularity in the last twenty years. One of the most efficient hybrid systems is represented by RCS frames, which consist of reinforced concrete (RC) columns and steel (S) beams. In RCS frames, the advantages of reinforced concrete and steel structures are combined to form a cost- and time-