Abstract
Reinforced concrete (RC) products poured directly at
sites or prefabricated are still popular choices in civil engineering field
around the world. In the present study, prefabricated RC formwork possibly
decreasing project duration remarkably and mostly keeping the monolithic behavior
of frames are introduced. A RC prefabricated formwork system not only plays the
same role as classical kinds of formwork, particularly wood, plastic or steel
but also contributes to the strength of structures. The natural characteristics
and the nonlinear performance of a single three-dimensional frame built using a
RC formwork system are evaluated by comparing with those of a reference frame
constructed traditionally. The natural frequencies are determined
experimentally using shaker test and by numerical modeling using finite element
method (FEM) whereas the nonlinear performance of the structures is computed by
nonlinear static pushover analysis (NSPA) using the software package ABAQUS
(2013). Based on the results of the empirical vibration test and numerical modeling,
the natural characteristics of both structures are approximately similar to
each other. However, in case of nonlinear performance, although the frame built
using the RC formwork system performs a lower bending capacity, about 70% of the
ultimate flexural strength of the monotonic frame, its ductility ratio is
higher, 13.3% in comparison with 8.2% of the classical frame.
Keywords
Concrete-to-concrete interface RC Formwork Shaker Test Natural Characteristics Pushover Analysis
References
- [1] http://www.plytecformwork.com/
- [2] Peter, A. Experimental Modal Analysis – A Simple Non-Mathematical Presentation. Peter Avitabile – Rev 052700 DRAFT DOCUMENT for Sound&Vibration Magazine. Massachusetts, 2001.
- [3] Anil K.C. Dynamics of Structures Theory and Applications to Earthquake Engineering. Boston, USA, 2012.
- [4] Joseph W.T., William G. M., C. Allen Ross. Structural Dynamics Theory and Applications. California, USA, 1999.
- [5] Hsu, L.S., Hsu, C.T.T. Complete stress-strain behavior of high-strength concrete under compression. Magazine of Concrete Research 1994; 46, No. 169: 301-312.
- [6] Aslani, F., Jowkarmeimandi, R. Stress-strain model for concrete under cyclic loading. Magazine of Concrete Research 2012; 64(8): 673-685.
- [7] Mahmoud E. K., Lawrence C. N., Basile G. R. ACI 318-08 Building Code Requirements for Structural Concrete. Illinois, USA, 2008.
- [8] Dassault Systèmes. Abaqus Analysis User’s Guide. RI, USA, 2013.
Abstract
References
- [1] http://www.plytecformwork.com/
- [2] Peter, A. Experimental Modal Analysis – A Simple Non-Mathematical Presentation. Peter Avitabile – Rev 052700 DRAFT DOCUMENT for Sound&Vibration Magazine. Massachusetts, 2001.
- [3] Anil K.C. Dynamics of Structures Theory and Applications to Earthquake Engineering. Boston, USA, 2012.
- [4] Joseph W.T., William G. M., C. Allen Ross. Structural Dynamics Theory and Applications. California, USA, 1999.
- [5] Hsu, L.S., Hsu, C.T.T. Complete stress-strain behavior of high-strength concrete under compression. Magazine of Concrete Research 1994; 46, No. 169: 301-312.
- [6] Aslani, F., Jowkarmeimandi, R. Stress-strain model for concrete under cyclic loading. Magazine of Concrete Research 2012; 64(8): 673-685.
- [7] Mahmoud E. K., Lawrence C. N., Basile G. R. ACI 318-08 Building Code Requirements for Structural Concrete. Illinois, USA, 2008.
- [8] Dassault Systèmes. Abaqus Analysis User’s Guide. RI, USA, 2013.