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| Analytical calculation method to calculate the precise main cable alignment of suspension bridge |
| Received:June 22, 2014 Revised:September 26, 2014 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201505008 |
| KeyWord:bridge engineering suspension bridge E-M method equilibrium equation main cable alignment |
| Author | Institution |
| 王邵锐 |
重庆交通大学 土木工程学院, 重庆 |
| 周志祥 |
重庆交通大学 土木工程学院, 重庆 ;山区桥梁与隧道工程国家重点实验室培育基地, 重庆 |
| 高燕梅 |
重庆交通大学 土木工程学院, 重庆 |
| 唐辉 |
重庆交通大学 土木工程学院, 重庆 |
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| Abstract: |
| This paper systematically described the segmental catenary theory and the basic equations of suspension bridge.The deformation stiffness iterative method calculating the main cable alignment was analyzed,which has been found that convergence problem may occur;therefore,an E-M method was put forward to calculate the precise main cable alignment of suspension bridge,namely on the basis of the equilibrium equation of main cable to derive the analytical relationship between the elevation of end point,middle point and the horizontal component H and vertical component V of the left end force of main cable,and the modified formulae of H and V considering the elevation error of end point and middle point.An example was introduced,results show that when the cable force is extremely uneven,E-M calculation method still can effectively make the alignment through three fixed points with and fast convergence speed and high precision. |
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