Research On Structural Behavior Of Newly Developed Connection Joint Between Light Steel Keel Exterior Wall And Steel Frame

Today, steel frames infilled with sandwich composite panels have been widely used in steel residential houses, then, the connections between steel frames and panels have an important influence on the seismic behavior of this structure system. The connections are the key factor to ensure walls (panels) and steel frames work together and resistance to damage, its performance affects the stiffiiess of structure system, the stability and bearing capacity directly. If the connection failure in earthquakes, sandwich composite panels will fall off, morphology and lead to serious more disasters. There are very little researches on the connections between steel frames and panels in china, so far Unified design standards have not formed because of the diversity of the connection. So the connection analysis has positive effects on the further development of the steel frames infilled with sandwich composite panel structural system in the industry. In this paper, we will put forward a new kind connection joint of light steel keel exterior wall and steel frame, calculating the size refer to the specification. The seismic performance of the connection between steel frames and panels were studied through the cyclic loading test and monotonic loading test.This paper put forward a new kind connection joint of light steel keel exterior wall and steel frame. And construction measures for the new connecting node are illustrated. The feasibility of connection joint is checked by calculating in accordance with regulatory requirements. In the monotonic loading test, kinds of exterior wall keel plate commonly used in engineering are combined with connection joint in order to find the stress mechanism and failure mode. Under the horizontal low-cyclic loading, we compare the skeleton curve of connection joint of light steel keel exteriorwall and steel frame. The main purpose is investigating the failure model and failure characteristic, and analyzing the strength, ductility, and the energy dissipation. The experimental results show that these joints can provide very high shear strength and excellent quake-resist property.