A bolted moment connection model for precast column-beam joint

Abstract

In this study, bolted moment connection model for precast reinforced concrete column-beam joint was developed and tested experimentally in order to obtain and compare its bearing capacity with traditional cast-in-place monolithic joint. With this purpose, a bolted moment connection behaving like a monolithic connection were designed. A full-scale T-shape beam and column were produced separately and assembled by using high strength bolts. This specimen was tested under constant axial load on column and quasi-static reverse cyclic lateral loading on beam end. Identically same monolithic specimen was also tested under the same conditions. Test results showed that bearing capacity of bolted specimen is approximately 20% higher than the capacity of monolithic one. In addition, it is observed that the shear and moment capacity of bolted joint has increased. Hence it is obtained that it is possible to build moment resisting frame structures by using the bolted moment connection suggested within this study and this system can be used for structures in seismic regions.