Analytical Modeling and Design Validation of Posttensioned Precast Concrete Coupling Beams for Seismic Regions

作者：Weldon Brad D; Kurama Yahya C^*

来源：Journal of Structural Engineering, 2012, 138(2): 223-233.

DOI：10.1061/(ASCE)ST.1943-541X.0000415

• Posttensioned concrete
• Precast concrete
• Prestressed concrete
• Reinforced concrete
• Coupled walls
• Coupling
• Seismic analysis
• Seismic design
• Shear walls

This paper provides an experimental validation on the analytical modeling and design of unbonded posttensioned precast concrete coupling beams. Previous test results from a series of floor-level coupling beam subassembly specimens are compared with the predicted results from a fiber-element analytical model. The test results are also used to validate an idealized coupling beam end moment versus chord rotation relationship that was developed as a design tool following basic principles of equilibrium, compatibility, and constitutive relationships. Based on the experimental and analytical comparisons, the paper presents a seismic design approach to achieve the desired lateral strength, stiffness, ductility, and energy dissipation capacity in unbonded posttensioned precast coupling beams. DOI: 10.1061/(ASCE)ST.1943-541X.0000415.

• 出版日期2012-2