| Segmental Bridges under Combined Torsion, Bending and Shear |
| |
| 作者姓名： | 黄真 刘西拉 |
| |
| 作者单位： | Dept.ofCivilEng.,ShanghaiJiaotongUniv.,Shanghai200030,China |
| |
| 摘 要： | Segmental bridges with unbonded prestressed tendons have some advantages, such as the weather independence and the corrosion protection of prestressing tendons. This paper analyzed the behavior of a prestressed segmental bridge with unbonded tendons under combined loading of torsion, bending and shear. According to the experiment research, a modified skew bending model was developed to calculate the bearing capacity of segmental bridges subjected to combined bending, shear and torsion. The finite element method was used to investigate the deflection behaviors of such structure, also to check the theoretical model. The theoretical and FEM research resuits were compared favorably with the test results from Technical University of Braunschweig, Germany. Finally, suggestion for the design and construction of segmental bridges with external prestressing was made.
|
| 关 键 词： | 组合转矩 挠度 剪切 桥梁 预应力混凝土梁 腐蚀保护 有限元法 理论模型 |
Segmental Bridges under Combined Torsion, Bending and Shear |
| |
| Abstract: | Segmental bridges with unbonded prestressed tendons have some advantages, such as the weather independence and the corrosion protection of prestressing tendons. This paper analyzed the behavior of a prestressed segmental bridge with unbonded tendons under combined loading of torsion, bending and shear. According to the experiment research, a modified skew bending model was developed to calculate the bearing capacity of segmental bridges subjected to combined bending, shear and torsion. The finite element method was used to investigate the deflection behaviors of such structure, also to check the theoretical model. The theoretical and FEM research results were compared favorably with the test results from Technical University of Braunschweig, Germany. Finally, suggestion for the design and construction of segmental bridges with external prestressing was made. |
| |
| Keywords: | unbonded prestressing tendons segmental bridge combined loading of torsion bending and shear |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
