钢箱梁桥的抗风问题及其对策研究  

Wind Resistant Study and Prevention Research of Steel Box Girders

作　　者：林志兴[1] 葛耀君[1] 曹丰产[1] 庞加斌[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《同济大学学报（自然科学版）》2002年第5期614-617,共4页Journal of Tongji University:Natural Science

摘　　要：以日本名古屋矢田川三跨连续钢箱梁桥为例 ,通过风洞试验与计算流体力学 (CFD)分析方法研究了主梁宽高比小于 2的大跨度梁式钢桥的抗风问题 .研究表明 ,此类桥梁存在高风速区的大振幅自激性涡振及驰振机制 ,应引起足够的重视 ,采取必要的减振措施 。Based on the three-span continuous beam bridge across the Yadagawa River in Nagoya,Japan, the wind resistant problems of a steel box girder with the width being almost two times of the depth have been thoroughly investigated by wind tunnel experiments and computational fluid dynamics method.Through these experimental and computational investigations,it should be noted that deck galloping and vortex-excited resonance will definitely occur under the designed wind speed.Several aerodynamic preventive means have been considered for improving oscillation.It is necessary to adopt a proper preventive means to ease aerodynamic vibration.

关 键 词：钢箱梁桥 抗风 风洞试验 驰振 涡激共振 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]