Prestressing force losses (due to creep and shrinkage, stress relaxation or tendon corrosion) can lead to tensile stresses under accident pressure, resulting in loss of containment leak integrity due to concrete cracking and tensile yielding of the non- prestressed reinforcement. The main function of the prestressing system is to ensure the leak integrity of the containment by maintaining a compressive state of stress under the tensile forces which arise in a hypothesized loss of coolant accident. Reliability-based inspection of prestressed concrete containment structuresĪ study was undertaken to develop a reliability-based approach to the planning of inspection programs for prestressed concrete containment structures. The sensitivities of the Choleskey decomposition matrix and the natural vibration character are calculated by simplified procedures. The limit state surface of the prestressed concrete containment is constructed directly incorporating the prestress.
Limit state probabilities for given parameters are calculated using the procedure developed at BNL, while that with consideration of parameter uncertainties are calculated by a fast integration for time variant structural reliability. The reliability analysis of prestressed concrete containment structures subjected to combinations of static and dynamic loads with consideration of uncertainties of structural and load parameters is presented. International Nuclear Information System (INIS) Kindly let us know if further assistance is required.Reliability analysis of prestressed concrete containment structures 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
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