墩身倾角变化对V腿连续刚构桥地震响应的影响

Effect of Pier Dip Angle on Seismic Response of Continuous Rigid-frame Bridge with V-shaped Piers

V腿连续刚构桥由于其独特的受力性能和外观形式,建造数量越来越多。本文采用地震反应谱法,研究了某V腿连续刚构桥在地震作用下墩身倾角变化对结构位移和内力的影响。结果表明,墩身倾角从25°变化至45°时,该类型桥梁结构的竖向位移受影响较大,墩身倾角对结构的内力影响较为复杂。

More and more continuous rigid-frame bridge with V-shaped piershad been built due to its unique mechanical performance and appearance.In the paper the earthquake response spectrum was used to research the influence of different pier dip angles on the structure displacement and internal force of continuous rigid-frame bridge with V-shaped piersunder earthquake action.The research results show that pier dip angle has a great effect on the vertical displacement of these continuous rigid-frame bridges,when the dip angle of V-shaped pier is from25°to45°.The impact on the internal force of structure is complicated.The research results may be applied to the design of these continuous rigid-frame bridges.