Browse > Article

Comparison of Performance of Restrainers of Steel Cables and Shape Memory Alloy Bars for Multiple-Span-Simply-Supported Bridges  

Choi, Eun Soo (홍익대학교 토목공학과)
Kim, Lee Hyeon (한양대학교 토목공학과)
Park, Joo Nam (한국철도기술연구원)
Cho, Hyo Nam (한양대학교 토목공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.19, no.6, 2007 , pp. 587-597 More about this Journal
Abstract
Steel restrainer cables for multiple frame bridges in California in the United States have been shown to be effective in preventing unseating at internal hinges during the past several earthquakes. Consequently, the steel-cable-restrainer is being tested for applications on multiple-span-simply-supported (MSSS) bridges in the mid-American region. In addition, shape memory alloy (SMA) bars in tension are being studied for the same application, multiple frame bridges, the developed seismic forces are transferred to piers through the restrainers. However, in MSSS bridges, the seismic forces are transferred to abutments by the restrainers. Therefore, the abutment' behavior should also be investigated. In this study, we assessed the seismic performance of the three types of restrainers, such as steel restrainer cables, SMA in tension, and SMA in bending for an MSSS bridge from moderate to strong ground motion, bending test of an SMA bar was conducted and its analytical model was determined for this study. Nonlinear time history analyses were conducted to assess the seismic responses of the as-built and the retrofitted bridges. All three types of restrainers reduced the hinge opening and the SMA in tension was the most effective of the three devices in preventing the unseating, all restrainers produced damage on the abutment from the pulling action of the MSSS bridge due to strong ground motions, was found that the retrofit of the abutment in the pulling action is required in the installation of restrainers in MSSS bridges.
Keywords
Shape Memory Alloy; Restrainer; Unseating; MSSS Bridges; Abutments;
Citations & Related Records
연도 인용수 순위
  • Reference
1 CALTRANS. (1990). Bridge Design Specifications Manual, California Department of Transportation
2 Dolce, M., Cardone, D., and Marnetto, R. (2000). Implementation and testing of passive control devices based on shape memory alloys. Earthquake Engineering and Structure Dynamics, 29: pp. 945-968   DOI   ScienceOn
3 Adachi, Y., Unjoh, S. and Kondoh, M. (1999). Development of a Shape Memory Alloy Damper for Intelligent Bridge Systems, Proceedings of the International Symposium on Shape Memory Materials, Kanazawa, Japan, pp.31-34
4 Copper, J.D., Friedland, I.M., Buckle, I.G., Nimis, R.B., and Bob, N.M. (1994). The Northridge Earthquake: progress made, lessons learned in seismic-resistant bridge design Public Roads, 58 26-36
5 Wilde K. Gardoni, P., and Fukino Y. (2000). Base isolation system with shape memory alloy device for elevated highway bridges, Engineering Structures 22, pp.222-229   DOI   ScienceOn
6 Mander, J. B., Kim, D. K., Chen, S. S., and Premus, G. J. (1996). Response of Steel Bridge Bearings to the Reversed Cyclic Loading, Technical Report NCEER 96-0014, Buffalo, NY
7 Andrawes, R. and DesRoches, R. (2005). Unseating prevention for multiple frame bridges using superelastic devices, Smart Materials and Structures, 14, s60-s67   DOI   ScienceOn
8 Delmont, M. (2001). SEISMIC RETROFIT OF BRIDGES USING SHAPE MEMORY ALLOYS, Thesis of Master of Science, Georgia Institute of Technology, Atlanta, Georgia
9 Choi, E. (2002). Seismic analysis and retrofit of Mid America bridges, Dept. Civil and Environmental Engineering. Georgia Institute of Technology. Atlanta, GA, USA
10 Maroney, B., Kutter, B., Romstad, K., Cahi, Y. H., and Vanderbilt, E.(1994). Interpretation of Large Scale Bridge Abutment Test Results, Proceedings of 3rd Annual Seismic Research Work, California Department of Transportation, CA, June 27-29
11 DesRoches, R., McCormick, J. and Delemont M. (2004). Cyclic Properties of Superelastic Shape Memory Alloy wires and Bars, Journal of Structural Engineering, ASCE, Vol. 130, No. 1, January, pp.38-46   DOI   ScienceOn
12 Prakash, V., Powell, G.H., Campbell, S.D. and Filippou, F.C. (1992). DRAIN 2DX User Guide, Department of Civil Engineering, University of California at Berkeley
13 DesRoches, R. and Delemont, M. (2002). Seismic retrofit of simply supported bridges using shape memory alloys. Engineering Structures, 24: 325-332   DOI   ScienceOn