Experimental study on a new-type concrete filled steel tubular column-slab joint subjected to low-cycle reversed horizontal load

摘要

For resolving the difficulty that slab-column system can not be popularized in high-intensity earthquake area, a new-type concrete filled steel tubular column-slab joint is presented in this paper. The new-type joint is characterized by forming a hinge joint between the steel tubular column and the concrete flat in interior of building. And it has no use for horizontal loads, which bore completely by the concrete wall or column around the building, but only bore the vertical loads in the structure. For all that, the joint should not be destroyed badly to introduce the collapse of building after suffering a big lateral load such as strong earthquake.