连续梁双曲面球型减隔震支座的数值模拟研究

The numerical simulation research on hyperboloid spherical seismic isolation bearing for continuous beam

通过对双曲面球型减隔震支座的结构受力性能研究,提出了一种简化且容易实现的正常使用状态下在Midas/Civil中的数值模拟方式,并以5跨连续梁为例,验证不同合龙顺序对支座正常受力特性的影响,经过研究得出一些有益的结论。

Through the research on the structural mechanical performance of hyperboloid spherical seismic isolation bearing, this paper proposed a simplified and easy to realize numerical simulation method in Midas/Civil under normal service state, and taking a 5-span continuous beam as an example, verified the influence of different closure sequences to normal mechanical characteristics of the bearing. After the research, the vertical reaction force was within the vertical design load range of each type of support, each pier top support of each pier was reasonably arranged, the stress meet the design requirements and had a certain strength reserve, using the way of combining with the general connection and rigid connection type in elastic connection, the characteristics of the support stiffness in all directions were input to simulate the the support under normal use, and the effect of simulating hyperboloid spherical seismic isolation bearing was good, from the perspective of bearing displacement made analysis, the 5-span continuous beam should adopt the harmony sequence of middle span, secondary middle span and side span in actual construction, which could make the bearing have more deformation reserves in all aspects under normal use.