Abstract
All aluminum single layered reticular dome is expected to be a suitable construction system for large span dome structures, because of characteristics such as a high strength and stiffness to weight ratio. Regarding the aluminum ball joints of single layered reticular domes, the authors have researched the bending stiffness and strength through structural testing and numerical simulation as discussed in a previous paper. As a result, this type of connection, with semi-rigidity, was confirmed to perform stable hysteresis. This study deals with the structural behavior of the unit reticular dome, making use of aluminum ball joints. In order to clarify the buckling behavior of such a unit dome, structural testing and analyses are executed with varied parameters : the subtended half angle and the slendeniess ratio. Through these structural tests and analyses, a yielding interaction formula for such aluminum ball joints is obtained, and further an effective coefficient for the bending stiffness of the connection is found in order to simulate the actual behaviors of such unit domes.
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