RETROFITTED METHODS RESEARCH OF FATIGUE CRACKS IN ORTHOTROPIC STEEL BRIDGE DECKS

摘要：

In this paper,some retrofitted methods are introduced,and in these retrofitted methods the better one is using the concrete paving layer (CPL) on existed orthotropic steel deck. A local finite element model is established by ANSYS based on an orthotropic steel bridge deck sample,stress distribution of bridge deck are calculated under design vehicle load before and after strengthening,and the results are compared each other. The analysis results indicate that,under wheel pressure load,the orthotropic steel deck and the CPL all appear stress concentration,after the deck was strengthened by CPL,the stress peaks decrease obviously due to the lager stiffness of concrete overlay,which induce the increase of fatigue resistant of the orthotropic steel deck. Because the CPL is prone to crack when it bear lager tension stress,some high performance concrete with high tension strength such as steel fiber reinforced selfstressing concrete and Reactive Powder Concrete are suggested to be used in deck paving layer.

关键词： Steel bridge Orthotropic steel deck Fatigue crack Renovation methods

作者: Yan-Ling Zhang Yun-sheng Li Chun-Lei Cui

作者单位: School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043,P.R. China School of Civil Engineering,Shijiazhuang Tiedao University, Shijiazhuang 050043,P.R.China School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043,P.R. China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 1524-1528

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）