Emergency Retrofit of Shear Damaged Extremely Short RC Columns Using Pre-tensioned Aramid Fiber Belts
Source abstract
Abstract
The seismic retrofit of existing RC buildings, which are vulnerable to seismic excitation, remains an active area of research. Emergency retrofit is necessary for rehabilitation of damaged RC buildings immediately after earthquake occurrences. The emergency retrofit technique is a laborsaving, quick and dry process. From such viewpoints, an emergency retrofit of RC columns damaged in earthquakes is proposed in this study. The pre-tensioned aramid fiber belt acts as a shear strengthening element as well as an axial capacity recovery method since the belt provides transverse confinement for the column. The retrofit method sufficiently recovers the earthquake performance as long as the damage caused by the earthquake is within the moderate level and the column can sustain the vertical load.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Structural Behavior of Reinforced Concrete · Innovative concrete reinforcement materials · Seismic Performance and Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil Engineering and Architecture, University of the Ryukyus
Graduate School of Engineering and Science, University of the Ryukyus
References (17)
Show source-provided references
1. Architectural Institute of Japan (AIJ) (1995). “Preliminary Reconnaissance Report of the 1995 Hyogoken-Nanbu Earthquake.” AIJ.
2. Banazadeh, M. and Yamakawa, T. (2004). “Fiber modeling analysis for cyclic flexure/shear behavior of RC short columns retrofitted by external hooped high strength steel bar prestressing.” AIJ Kyushu Chapter Architectural Research Meeting(Structure), No. 43-1, 473-480.
3. Banazadeh, M. and Yamakawa, T. (2004). “Fiber modeling analysis for cyclic flexure/shear behavior of RC columns retrofitted by pre-tensioned high strength steel bars.” Journal of Structural and Construction Engineering , AIJ, No. 582, 137-145.10.3130/aijs.69.137_3 ↗
4. D'Ambrisi, A. and Filippou, F. (1999). “Modeling of cycle shear behavior in RC members.” Journal of Structural Engineering, ASCE, 125 (10), 1143-1149.10.1061/(ASCE)0733-9445(1999)125:10(1143) ↗
5. Mander, B. J., Priestley J. N. M. and Park R. (1988). “Theoretical stress-strain model for confined concrete”, ASCE Journal of Structural Engineering, 144 (8), 1804-1826.10.1061/(ASCE)0733-9445(1988)114:8(1804) ↗
6. Menegotto, M. and Pinto, P. E. (1973). “Method of analysis for cyclically loaded reinforced concrete plane frame including changes in geometry and non-elastic behavior of elements under combined normal force and bending.” JABSE Symposium on Resistance and Ultimate Deformability and of Structures Acted on by Well-defined Repeated Loads, Final Report, Lisbon.
7. Nasrollahzadeh, N. K. and Yamakawa, T. (2002). “FEM-based confinement model for axially loaded columns retrofitted by prestressed aramid fiber belts.” Proc. of the Japan Concrete Institute, JCI, 24 (2), 115-120.
8. Otani, S. (2003). “Seismic vulnerability assessment and retrofit - State of practice in Japan.&rdquo
9. Proc. of the fib 2003 Symposium, Athens, Greece, 43-62.
10. Satoh, H., Yamakawa, T., Nasrollahzadeh, N. K. and Inaba, H. (2001). “Seismic and/or emergency retrofit of extremely short RC columns utilizing prestressed aramid fiber belts and steel angles.” FRP Composites in Civil Engineering, Vol. I, Elsevier Science Ltd. 909-916.
11. Tomii, M. and Takeuchi, M. (1968). “The relation between the deformed angle and the sharing force ratio (0.80-1.00) with regard to 200 Shear Walls.” Transaction of AIJ, No. 153, 41-48.
12. Vechio, J, F. and Colins, M, P. (1986). “The modified compression field theory for reinforced concrete elements subjected to shear.” ACI Structural Journal, No. 83 (2), 219-231.
13. Yamakawa, T., Tagawa, T., Li, W., Kurashige. and M., Kamogawa, S. (2001). “RC column retrofit technique by PC rod prestressing as external hoops.” Proc. of the First International Structural and Construction Conference, Honolulu, Hawaii, 975-980.
14. Yamakawa, T., Nasrollahzadeh, N. K. and Satoh, H. (2001). “Seismic or emergency retrofit of RC short columns by use of prestressed aramid fiber belts as external hoops.” Journal of Structural and Construction Engineering, AIJ, No.550, 135-141.10.3130/aijs.66.135_4 ↗
15. Yamakawa, T. and Nasrollahzadeh, N. K. (2002). “Experimental investigation on seismic retrofit of RC short columns by utilizing prestressed aramid fiber belts.” The Third Middle East Symposium on Structural Composites for Infrastructure Applications (Aswan, Egypt), 79-80, CD-ROM.
16. Yamakawa, T., Li, W. and Kurashige, M. (2003). “Permanent and/or emergency seismic retrofit of RC extreme short columns by utilizing prestressed high strength steel bars as external hoops.&rdquo
17. Proc. of the fib 2003 Symposium, Athens, Greece, 384-385, CD-ROM.