Comparative analysis of Cable Stayed Bridge with different cable arrangements

Among all the types of bridges the cable stayed bridge are basically opted for long spans and aesthetics. These bridges showed stability, desirable use of structural materials, aesthetic in view, comparatively low design and maintenance cost point of view, and providing efficient structural characteristics. The cable-stayed bridges are ideal for ranges longer than cantilever bridges and shorter than suspension bridges. This is where cantilever bridges would quickly become heavier if the range were stretched, while suspension bridge cabling would not be more conservative if the range were abbreviated. The Pylon deals with compressive forces. Pylons are mostly loaded with by compression where concrete pylons are more economical. Tension occurs along the cable lines. Reinforced concrete girder design for Deck member ranges from 200m to 400m are generally considered economical. Multiple design choices are available for Designer and Architecture. Cable Stayed Bridge act as self-supporting structure (In case of minor damage, cable snap). Analysis result will be useful for designer so as to get best geometry of cable arrangement. Here in this study. Cable Stayed Bridge is analyzed with 3 different cable arrangements for single pylon and thereafter it is concluded that Semi-Harp shape Cable Stayed Bridge is more effective configuration compared to Harp and Fan shape Cable Stayed Bridge. This study presents a comparative structural analysis of cable-stayed bridges using three different cable patterns: fan, harp, and semi-harp. The objective is to evaluate the structural behavior and efficiency of each arrangement under similar geometric and loading conditions. A uniform bridge geometry with fixed pylon height, span lengths, and deck configuration is adopted for all cases to ensure consistency. Finite element modeling and analysis are conducted using MIDAS Civil, focusing on key parameters such as bending moment, shear force, axial force, deck deflection, and pylon forces. The results highlight the influence of cable arrangement on the distribution of internal forces and overall bridge performance.