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Modeling Initial Cable Forces Construction Stage Analysis Nonlinear Effects Results Longer spans possible with the use of cables =>H/L of extradosed bridges: 1/15 to 1/35 =>H/L of box girder bridges: 1/15 to 1/17 Lower main tower =>H/L of extradosed bridges: 1/15 =>H/L of cable stayed bridges: 1/5 =>Smaller stress variation in stay cables =>Reduced fatigue failure of stay cables =>Construction & appearance: Cable Stayed Bridge =>Structural properties & design specifications: PSC girder bridge Reduced girder depth =>Reduced self weight of the structure Cable Forces and StressesĬase Study Modeling Initial Cable Forces Construction Stage Analysis Nonlinear Effects Resultsīenefits with Extradosed Bridge Ordinary prestressed girder bridge with internal or external tendons having cables installed outside and above the main girder and deviated by short towers located at supports. Camber Computation 1) Construction Camber 2) Manufacture Camber c. Forward CS Analysis 1) Using Backward CS Analysis results 2) Using Lack of fit force 3) Using Unknown load factor VI.

Kindly let us know if further assistance is required.II. Since tendon primary forces itself are not affected, tendon secondary forces also won't be affected. Now, tendon primary is the force being applied to the structure due to prestress and Tendon secondary is nothing but the the resistance in the indeterminate structure due to the applied prestress load. The forces would remain unchanged, no matter the transfer length. This can be verified by checking the beam forces result.

It does not affect the axial force of the tendon and the force being transferred to the girder element.

What this feature basically does is just the way how stress is considered at the extreme fibres. The purpose of transfer length is as shown in the image below. Thank you for writing to us! Glad to know that you are keenly studying the features in the software. I am using PC tendon Construction Stage analysis I have a question regarding ＴＲＡＳＦＥＲ LENGTH OPTION, Tendon Primary load case stress result table has effect of transfer length as input.īut please explain Why? Tendon Secondary load case stress result table has no effect of transfer length. I am MIDAS CIVIL beginner, I would appreciate if you could help me understand the ＴＲＡＳＦＥＲ LENGTH option