摘要
应用常规两塔斜拉桥的计算方法,得出了下拉索体系多塔斜拉桥的简化静力计算公式;建立了有限元分析模型,以下拉索的位置设置为参数,分析了下拉索布置对主梁受力的影响。结果表明:设置下拉索局部地增加了主梁轴力,但弯矩却相应地减小,对主梁的承载影响较小。
Through the application of the calculation method of the conventional two towers cable-stayed bridge,the simplified static calculation formula of a structural system of multi-tower cable-stayed bridge with tie-down cables is got.Furthermore,a finite element analysis model is established.Taking different set locations of the tie-down cable as parameters,the impact of the tie-down cable layout on the force of main girder is analyzed.The results show that： setting up the tie-down cable can locally increase the axial force on the main girder,but reduce the moment correspondingly;and the bearing on the main beam is less affected by setting up the tie-down cable.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2011年第6期1275-1277,1281,共4页
Journal of Chongqing Jiaotong University(Natural Science)
关键词
多塔斜拉桥
下拉索
主梁
有限元分析
multi-tower cable-stayed bridge
tie-down cable
main girders
finite element analysis
