Modified skew bending model for segmental bridge with unbonded tendons

作者：Huang, Z^*; Liu, X L

来源：Journal of Bridge Engineering, 2006, 11(1): 59-63.

DOI：10.1061/(ASCE)1084-0702(2006)11:1(59)

• bridge design
• segmented elements
• combined stress
• bearing capacity
• tendons
• bridges
• concrete
• bonding

Segmental bridges with unbonded prestressed tendons have some advantages over conventional concrete bridges, such as weather-independent construction and the corrosion protection of the prestressing tendons. This paper analyzes the behavior of a prestressed segmental bridge with unbonded tendons under combined loading of torsion, bending, and shear. According to experimental research, a modified skew bending model was developed to calculate the load-carrying capacity of segmental bridges subjected to combined bending, shear, and torsion. A finite element method (FEM) was used to investigate the deflection behavior of such a structure and to check the theoretical model. The theoretical and FEM research results compared favorably with test results. Finally, suggestions for the design and construction of segmental bridges with external prestressing were made.

• 出版日期2006-2
• 单位上海交通大学