基于健康监测数据的大跨度钢箱梁桥风雨响应分析  

Response Analysis of Long-span Steel Box Girder Bridge in Wind-rain Based on Health Monitoring Data

作　　者：郭翠翠[1,2] 张华兵[1,2] 

机构地区：[1]中铁大桥局集团武汉桥梁科学研究院有限公司,湖北武汉430034 [2]桥梁结构安全与健康湖北省重点实验室,湖北武汉430034

出　　处：《公路工程》2014年第5期232-235,共4页Highway Engineering

摘　　要：针对风雨、车载作用下极易发生的大跨桥梁及斜拉索振动,以武汉军山长江大桥健康监测系统实测结构响应数据为依托,分析某8级大风并下雨时的实测数据。结果表明:主塔偏位和结构振动的横桥向、纵桥向风雨响应最大值较日常值增大了2倍,但尚在结构运营安全范围内;半数斜拉索测点发生大幅风雨振和参数振动,且位移超出阈值,部分减振器已失效,需维修更换。For the incidental vibration of long-span bridge and stayed-cable in wind and rain or vehicle load,the article analysed the data in 8 class wind and rain based on the effective structure response data of Wuhan Junshan Changjiang bridge health monitoring system. The results suggested,though the maximum response of tower bias and structure vibration in the cross and longitudinal direction of the bridge increased to the original 2 times,they all in the structure operation safety range; Nearly half of the stayed-cable measuring points experienced a large wind-rain amplitude vibration and parametric vibration led to the displacement exceeded the threshold values,some dampers needed to be repaired or replaced because of little Damping effect.

关 键 词：风雨响应 大幅风雨振 参数振动 健康监测 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]