摘要
以湘潭四大桥桁架拱为工程背景,进行了三种规格的K型钢管混凝土节点的疲劳试验,基于热点应力计算了K型钢管混凝土节点的疲劳荷载幅值,表明热点应力法能够较好地评估钢管混凝土节点的疲劳寿命;试验表明K型钢管混凝土节点的疲劳性能明显优于K型钢管节点。在此基础上初步提出了K型钢管混凝土节点的S—N曲线,对建立K型钢管混凝土节点疲劳寿命设计准则具有一定的参考意义。
Based on the truss arch of Xiangtan 4th Bridge,we made fatigue property test on concrete filled steel pipe K-joints of three different specifications,and calculated the amplitude of fatigue load of concrete filled steel pipe K-joints with hot-spot stress approach in this paper,which presented that hot-spot stress approach can be used to assess fatigue life of concrete filled steel pipe,and fatigue property of concrete filled steel pipe K-joints was obviously better than that of steel pipe K-joints.Moreover,the S—N curve of concrete filled steel pipe K-joints proposed by this paper would be of referential significance for building design criterion of fatigue life of concrete filled steel pipe K-joints.
出处
《中国工程科学》
2011年第9期97-100,共4页
Strategic Study of CAE
