桥梁外界动力激励及影响因素分析

Analysis of Outside Dynamic Excitations for Bridge Structure

分析了桥梁结构常见的外界激励的特点,及桥梁结构对车辆振动、风致振动、地震振动等不同激励响应的因素,得出桥梁结构及不同激励后加向应的设计控制,跨度小刚度大的混凝土桥以抗振设计为主,跨度大刚度小的悬索桥以抗风振动为主的结论。

This paper discusses different types of outside excitations acted on bridge structures, such as the vehicle liberation, wind liberation, earthquake liberation and so on. We use the anti- liberation method to design the short- span and strong intensity stiffness concrete bridge, and the anti- wind liberation method for the long- span and weak intensity stiffness suspension bridge.