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将带初始角度的摩擦摆支座应用到单层球面网壳结构中,通过有限元分析,研究了单层球面网壳结构的受力性能。选取El Centro波、Taft波,在水平、竖向和三维地震作用下分析带初始角度的摩擦摆支座对单层球面网壳结构抗震性能的影响。结果表明:静力荷载作用下,随着摩擦摆支座初始角度的增大,支座提供的水平支承力增加,单层球面网壳结构的内力和变形减小;当摩擦摆支座的初始角度小于15°时,在水平和三维地震作用下,网壳结构的减震效果相近,而在竖向地震作用下,随着摩擦摆支座初始角度的增大,网壳结构的减震效果增加;建议摩擦摆支座的初始角度小于15°。
The friction pendulum bearing with initial angle is applied to the single-layer spherical reticulated shell structure. The finite element analysis is used to study the force-bearing performance of the single-layer reticulated dome structure. El Centro wave and Taft wave were selected to analyze the influence of the friction pendulum bearing with initial angle on the seismic behavior of single-layer reticulated dome under horizontal, vertical and three-dimensional seismic actions. The results show that with the increase of the initial angle of the friction pendulum bearing, the horizontal bearing force provided by the bearing increases and the internal force and deformation of the single-layer spherical reticulated shell structure decrease. When the angle is less than 15 °, the reverberation effect of the reticulated shell structure is similar under the action of horizontal and three-dimensional seismic. Under the action of the vertical earthquake, the damping effect of the reticulated shell structure increases with the increase of the initial angle of the friction pendulum support. Increase; suggested that the initial angle of friction pendulum is less than 15 °.