Strength of a Frame using New Type of Beam-to-Column Connection for CFT

点击翻译按钮获取中文摘要

3-D frames with a rectangular steel tube columns and four composite beams are tested, and effective width of the RC stab are discussed based on the experimental data.Beams of the specimen, which are connected H-shaped steel beam and RC slab by using stud bolt, are welded to the column tube without diaphragm, and the direction of the beam coincides with the diagonal direction of the rectangular tube section.Test parameters are1) column type : concrete filled tube and vacant tube2) loading pattern : gravity load and horizontal loadIt is recognized that frames with this type of connection can be designed to collapse under beam-yield type. And flowing results about effective width of the slab are obtained.1) For ultimate strength of the composite beamFull width of the RC slab are effective for frames with a CFT column under the gravity load.For the frame subjected to horizontal load, effective width of the slab is smaller than that of the frame under gravity load, This is resulted from beams of frame under horizontal load are subjected to totional moment.2) For elastic rigidityEffective width of the slab of the beam subjected to hogging bending (slab side tension due to bending) is smaller than that under sagging bending (slab side compression due to bending).