考虑转动的双曲面球型减隔震支座竖向位移分析

摘要:

双曲面球型减隔震支座的转动会造成支座竖向高度的变化，对连续梁桥内力造成影响。为了研究双曲面球型减隔震支座转动中的竖向位移，在分析了纯转和伴随水平位移的转动两种转动情况的转动过程基础上，建立了双曲面球型减隔震支座转动简化模型，通过理论推导得到了支座转动竖向位移公式。同时分析了双曲面球型减隔震支座转动中竖向位移的影响因素，为双曲面球型减隔震支座设计和连续梁桥内力计算提供理论依据。

Abstract:

The rotation of double spherical aseismic bearing will result in changes of the bearing's vertical height, which will affect the internal forces of continuous beam bridges. Based on the process analysis of two kinds of the bearing rotation, the pure rotation and rotation with horizontal displacement, a simplified rotation model of double spherical aseismic bearing is established to study the vertical rotational displacement of the bearing. And a vertical rotational displacement formula of the bearing is obtained by theoretical derivation. The factors that influence the vertical rotational displacement of double spherical aseismic bearing are analyzed then. This study can provide theoretical basis for bearing design and internal forces analysis of continuous beam bridges.