Assessment of Building Code Provisions and Numerical Models for Predicting the Response of Deep Reinforced Concrete Beams with an Opening
Lobsang, Tenzin.
2017
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Abstract: The 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-Tie mod... read moreelling 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 beams.
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 - ID:
- m900p6262
- Component ID:
- tufts:23099
- To Cite:
- DCA Citation Guide EndNote
