Studying the seismic behavior of double layer barrel vaults under depth to span and height to span variations

The space structure barrel vaults are common examples of space structures utilization, which are used frequently because of some characteristics including rigidity, lightness, and the ease of implementation. Therefor studying the seismic behavior of double layer barrel vaults with different depth to span and height to span ratios is important. In this paper the buckling behavior of double layer barrel vaults with cylindrical parts and slenderness coefficient of 100 and joints under gravity loads as well as earthquake loads are studied. The nonlinear effects of materials and non-geometric forms are considered in this study. After configuration processing in FORMIAN software and using SAP2000, and ANSYS software, nonlinear dynamic analysis has been performed and the behavior of these structures against horizontal component of TABAS (Iran) earthquake is studied, which is the most important component of all.

کلیدواژه ها:

space structure ، nonlinear dynamic analysis ، double layer barrel vaults ، FORMIAN