多层转运站结构的振动控制与加固分析

Analysis on vibration control and repair of truck and coal transporting trestle

为改进多层转运站结构设计,提高多层转运站结构的抗振动能力,研究了多层转运站结构的动力特性和动力响应.基于现场实测和调查,分析了多层转运站结构在增设钢支撑和钢筋混凝土门式剪力墙两种振动控制方案下结构的动力特性和动力响应.研究结果表明:以上两种加固方案均可减小结构发生共振的可能性并改善结构侧向变形的不均匀性.考虑施工工艺,可优先选用增设钢筋混凝土"门式"剪力墙的加固方案.对未设置楼板的框架楼层,也可增设"回"字形钢筋混凝土板,在提高结构整体性的同时兼有控制楼盖振动的作用.

In order to improve the design and vibration-resistant capacity of multi-story transfer station,dynamic characteristics and responses of multi-story transfer station were studied. Based on the site test and investigations, two strengthening schemes such as adding steel braces and door-shape shear walls were conducted and the dynamic responses were calculated. It indicates that the adverse effects of the non-uniform deformation and multiple frequency resonance can be reduced by the both strengthening schemes. Considering construction technology, priority scheme is door-shape shear wall strengthening scheme. The closed concrete floor can be set at the floor level to improve the integrity of the structure and control the vibration of the floor.