Finite-Element Model for Pretensioned Prestressed Concrete Girders
Ayoub, A. & Filippou, F. C. (2010). Finite-Element Model for Pretensioned Prestressed Concrete Girders. Journal of Structural Engineering, 136(4), pp. 401-409. doi: 10.1061/(ASCE)ST.1943-541X.0000132
Abstract
This paper presents a nonlinear model for pretensioned prestressed concrete girders. The model consists of three main components: a beam-column element that describes the behavior of concrete, a truss element that describes the behavior of prestressing tendons, and a bond element that describes the transfer of stresses between the prestressing tendons and the concrete. The model is based on a two-field mixed formulation, where forces and deformations are both approximated within the element. The nonlinear response of the concrete and tendon components is based on the section discretization into fibers with uniaxial hysteretic material models. The stress transfer mechanism is modeled with a distributed interface element with special bond stress-slip relation. A method for accurately simulating the prestressing operation is presented. Accordingly, a complete nonlinear analysis is performed at the different stages of prestressing. Correlation studies of the proposed model with experimental results of pretensioned specimens are conducted. These studies confirmed the accuracy and efficiency of the model.
Publication Type: | Article |
---|---|
Additional Information: | Copyright American Society of Civil Engineers, 2014. |
Publisher Keywords: | Prestressed concrete, Pretensioning, Finite-element method, Nonlinear analysis, Bond stress, Slip |
Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction |
Departments: | School of Science & Technology > Engineering |
SWORD Depositor: |
Download (421kB) | Preview
Export
Downloads
Downloads per month over past year