大跨高低塔斜拉桥抗风性能试验研究  

Experimental Study on Wind Resistant Performance of Long-span High-low Pylon Cable-stayed Bridg e

作　　者：郭峰 康福军 王俊[2] GUO Feng;KANG Fujun;WANG Jun

机构地区：[1]广东省佛山市顺德区工程建设中心,广东佛山528300 [2]长安大学公路学院,陕西西安710064

出　　处：《城市道桥与防洪》2022年第12期108-112,I0010,共6页Urban Roads Bridges & Flood Control

摘　　要：以顺德斜拉桥为工程背景,通过节段模型风洞试验研究桥梁的涡振、颤振性能,并分析桥梁的静风响应性,研究大跨高低塔斜拉桥抗风性能。研究发现:较小的风嘴有利于抑制和减小流线型箱梁的涡振振幅,且不影响颤振稳定性;大桥静风响应随风速变化具有显著的非线性特点,来流风攻角对静风响应影响较小。可为大跨高低塔斜拉桥抗风性能研究提供科学依据和参考。Taking Shunde Cable-stayed Bridge as the engineering background, the vortex vibration and flutter performances of the bridge are studied through the segmental model wind tunnel test. And the static wind responsiveness of the bridge is analyzed and the wind-resistant performance of the long-span high-low pylon cable-stayed bridge is studied. The study finds that the smaller tuyere is beneficial to restrain and decrease the vortex vibration amplitude of streamline box girder, and does not affect the flutter stability. The static wind response of the bridge has the obvious nolinear feature with the change of wind speed. The wind attack angle of oncoming flow has little influence on the static wind response. The scientific basis and reference are provided for the wind resistant research of long-span high-low pylon cable-stayed bridges.

关 键 词：桥梁工程 高低塔斜拉桥 风洞试验 涡振 颤振 静风稳定性 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]