Title:
How to Increase Ductile Behavior of Reinforced Concrete Structures
Author(s):
Piotr Moncarz, Tea Visnjic, and Peter H. Feenstra
Publication:
Symposium Paper
Volume:
340
Issue:
Appears on pages(s):
210-220
Keywords:
concrete structures, post-ultimate behavior, gravity-based structure, OpenSees
DOI:
10.14359/51725814
Date:
4/1/2020
Abstract:
This paper presents a numerical study of novel configurations in reinforced concrete wall systems that exhibit large structural ductility and increased post-ultimate strength, leading to potentially better performing structures under large and sustained loads. A Gravity-Based Structure (GBS) under extreme ice loading is used as use-case to investigate various scenarios to increase post-ultimate ductility. It is shown that the largest increase in the out-of-plane toughness of the exterior reinforced concrete walls is gained using post-tensioned tendons and mild “core” steel placed at the center of the exterior wall cross section. These structural features show promise in improving the global post-ultimate behavior, which would make them desirable to use in structures that are deployed in locations where extreme ice feature impacts pose a foreseeable risk and where designing the structure to remain elastic under ice impact may not be economically feasible. Lessons-learned from the GBS evaluation can also be applied to various reinforced concrete structures.
Related References:
1. Sagiroglu, S. (2012). Analytical and Experimental Evaluation of Progressive Collapse Resistance of Reinforced Concrete Structures. Doctoral Dissertation, Northeastern University, Boston, MA
2. Lew, H.S., Bao, Y., Sadek, F., Main, J.A., Pujol, S., and Sozen M.A. (2011). An Experimental and Computational Study of Reinforced Concrete Assemblies under a Column Removal Scenario. NIST
Technical Note 1720.
3. European Committee for Standardization Technical Committee ISO/TC/67 (2010). Petroleum and natural gas industries – Arctic offshore structures (ISO 19906:2010). International Standards Organization, Geneva, Switzerland.
4. McKenna, F. S. (2010). Nonlinear Finite Element Analysis Software Architecture Using Object Composition. Journal of Computing in Civil Engineering, 24(1):95-107.
5. OpenSees. (2015). Open System for Earthquake Engineering Simulation. Retrieved from http://opensees.berkeley.edu/
6. ACI (2014). Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14). American Concrete Institute, Farmington Hills, MI.
7. Correia, A. A. (2008). Force-Based Versus Displacement-Based Formulations in the Cyclic Nonlinear Analysis of RC Frames. The 14th World Conference on Earthquake Engineering. Beijing, China.
8. Scott, M. F. (2006). Plastic hinge integration methods for force-based beam-column elements. Journal of Structural Engineering, (132)2: 244-252.
9. Paulay, T. A. (1992). Seismic design of reinforced concrete and masonry buildings. New York, NY. Wiley.