Assessment of Building Code Provisions and Numerical Models for Predicting the Response of Deep Reinforced Concrete Beams with an Opening
Strut-and-Tie Method (STM) was introduced into U.S. design practice with the 2002
Building Code Specifications for the Design of Structural Concrete (ACI318-02). The STM
is based on the lower bound theory of plasticity and it idealizes the design of a
complex structure by a simple truss. The research will focus on the applicability,
efficiency, and validation of the Strut-and-Ti... read moree modelling approach by comparing
experimental results from three test structures loaded to failure with ACI318 and the
predicted responses from the use of non-linear finite element analysis program VecTor2.
Three deep reinforced concrete beams with openings were designed with different truss
models and then loaded to failure. Strain gauges, Load Cell and a displacement
transducer were installed on critical locations in the specimen and LabVIEW was used as
the data acquisition system to log these measurements. To verify the proposed
Strut-and-Tie model, VecTor2 is utilized to build a nonlinear RC model and predict the
response of the specimens. VecTor2 is a nonlinear finite element program developed at
University of Toronto and is based on Modified Compression Field Theory. The program
uses an incremental total load iterative secant stiffness algorithm. The results from
the experimental data are compared to that of the predicted value from the Non-Linear
Finite Element Analysis (NLFEA) models. This comparison is used to comment on the
suitability of both the ACI318-11 Strut-and-Tie code provisions, and of continuum
analysis for predicting the capacity and response of these deep
Thesis (M.S.)--Tufts University, 2017.
Submitted to the Dept. of Civil Engineering.
Advisor: Daniel Kuchma.
Committee: Babak Moaveni, and Michael Zimmerman.
Keyword: Civil engineering.read less