摘要
钢管混凝土拱桥中拱肋脱空问题比较普遍,本文对一实例钢管混凝土拱桥进行全桥有限元分析,对主要受力构件拱肋考虑了材料非线性和几何非线性。在恒载情况下,对不同空洞比率下动力稳定性进行了分析;在考虑半幅布载和全桥布载情况下,对不同空洞比率下桥梁的极限承载力进行了分析。分别将计算结果与没有空洞的桥梁进行对比,得出一些结论,对脱空钢管混凝土拱桥的评价和加固有一定借鉴作用。
The void in CFST arch bridge is a common problem. In the paper, material and geometric nonlin- earity of the concrete arch was considered, a void CFST arch bridge finite element analysis was established using the selected constitutive relation and element. When subjected to dead load, the dynamic stability of the bridge was analyzed with different empty ratio. In the case of half-bridge load and full-bridge load, the ulti- mate strength was analyzed. These results were compared separately with no empty bridge. Some useful con- clusions were drawn, which can be applied to the assessment and strengthening of void CFST arch bridge.
出处
《华中科技大学学报（城市科学版）》
CAS
2009年第2期47-51,共5页
Journal of Huazhong University of Science and Technology
