基于WIM数据的上海某斜拉桥锚固结构寿命评估  

The life Estimation of Anchoring Structure of Shanghai Certain Cable-stayed Bridge Based on WIM Data

作　　者：张军[1] 胡明敏[1] 王永涛[1] 

机构地区：[1]南京航空航天大学航空宇航学院,江苏南京210016

出　　处：《公路工程》2016年第3期208-211,246,共5页Highway Engineering

摘　　要：根据上海某斜拉桥的动态称重系统(WIM)所采集的车辆信息数据,以索梁和索塔锚固区的钢锚箱作为研究对象,分别计算不同轴型的汽车加载时钢锚箱的应力变化历程,采用雨流计数法建立疲劳细节的应力谱,参考BS5400确定疲劳细节的S-N曲线,结合线性累积损伤准则公式计算钢锚箱的疲劳寿命,并对该结果做出分析和说明。According to the data of vehicle information from the Weigh-in-Motion system（ WIM） of Shanghai Certain Cable-stayed Bridge. The research objects are the steel anchor box of anchorage zone and tower anchorage area. Define the stress change course of all selected anchor boxes undertook the different vehicle load. After calculate stress change course via Rain Flow Counting method we get the stress spectrum of fatigue details. Refer to the S- N curve of fatigue details depend on BS5400 and linear cumulative damage rule formula,calculate the fatigue life of all the anchor boxes and make an analysis and description of this result.

关 键 词：动态称重系统 钢锚箱 S-N曲线 疲劳寿命 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]