Experimental study on seismic behavior of a new cross-shaped connection node between external ALC wall panels and steel frame
A new cross-shaped connection was proposed,in which was between external autoclaved aerated concrete(ALC)panels and steel beams.It has a simple form and convenient installation.In order to study the seismic performance and working mechanism of the new connection,two groups of specimens were designed,in which SJ-1 is a traditional hook-and-bolt connection and SJ-2 is a new connection.Low cyclic loading tests were conducted on the two groups of specimens,focusing on the comparative analysis of damage,hysteresis curve,skeleton curve,stiffness degradation curve,ductility and energy dissipation capacity of the two groups of specimens,and finite element calculations of the new nodes were performed using ABAQUS finite element software.The new cross-shaped connection can effectively delay and reduce the damage of the ALC panel,so that the overall structure showed excellent seismic performance and coordinated deformation capacity,and the simulated and experimental results have a good agreement.It indicates that the new cross-shaped connection can efficiently connect the external ALC panel with the main body of the steel structure.It has good force and seismic performance,and has high promotion value.
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