【摘要】 为确定巢湖市湖光路跨巢湖大桥的合理结构体系,通过比较分析不同纵、横向约束体系在各种工况下的响应,提出了一种给定剪断力的固定支座+金属阻尼器的纵横向组合结构体系,适合于抗震要求高的大跨度独塔斜拉桥。结果表明,该组合体系能够兼顾结构动静力需求,静力工况限制主梁位移,地震时减震耗能,且静动力转换机制明确。更多还原

【Abstract】 In order to specify an appropriate structural system of Chaohu Bridge, the article compares and analyzes the responses of different longitudinal and lateral constraint systems in various load cases, and proposes a longitudinal and lateral composite structural system of fixed supporting with given shearing force +metal damper, which is suitable for the high anti-seismic requirement of long-span single-pylon cable-stayed bridge. The result shows that this composite system can combine the static demand with dynamic demand of structure, which limits statically displacement of girder while reduces seismic responses of the structure. In addition, the composite system has a clear conversion mechanism from static to dynamic conditions.更多还原