Compressive Behavior of Steel Members Reinforced by Patch Plate with Welding and Bonding
- 1 Department of Civil and Environmental Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
- 2 Department of Civil Engineering, Division of Global Architecture, Graduate School of Engineering, Osaka University, Suita, Japan
Abstract
Repair and reinformcement of aged civil steel structures is one of the important issues for maintaining and using them for a long term. For repair and reinforcement of deteriorated civil steel structures due to fatigue and corrosion, patch plate reinforcement is widely applied. Bolting is generally used because of easy quality control and many construction achievements. However, bolting has downsides including holes made and weight increase. Welding is considered to overcome these demerits but in reality the application of welding is unsatisfactory due to the possibility of fatigue crack occurring from the welded part. In this study, a patch plate strengthening system of welded joint assisted with bonding has been proposed. The compressive behaviors of weld-bond jointed specimen were investigated by a series of experiments and FE analysis. It was confirmed that use of welding and bonding was effective to enhance compressive strength of specimen, due to better load-carrying capacity of patch plate compared with sole use of welding.
- Zhao, X.L. and Zhang, L. (2007) State-of-the-Art Review on FRP Strengthened Steel Structures. Engineering Structures, 29, 1808-1823. https://doi.org/10.1016/j.engstruct.2006.10.006
- Karr, D.G., Douglas, A., Ferrari, C., Cao, T., Ong, K.T., Si, N., He, J., Baloglu, C., White, P. and Parra-Montesinos, G.J. (2017) Fatigue Testing of Composite Patches for Ship Plating Fracture Repair. Ships and Offshore Structures, 12, 747-755. https://doi.org/10.1080/17445302.2016.1222864
- Miki, C., Anami, K., Tani, H. and Sugimoto, I. (1999) Methods for Fatigue Strength Improvement by Weld Toe Treatment. Welding International, 13, 795-803. https://doi.org/10.1080/09507119909449006
- Teng, J.G., Yu, T. and Fernando, D. (2012) Strengthening of Steel Structures with Fiber-Reinforced Polymer Composites. Journal of Constructional Steel Research, 78, 131-143. https://doi.org/10.1016/j.jcsr.2012.06.011
- Fields, D. (1973) Summary of the Weldbonding Process. Adhesives Age, 16, 41-44.
- Chang, B., Shi, Y. and Lu, L. (2001) Studies on the Stress Distribution and Fatigue Behavior of Weld-Bonded Lap Shear Joints. Journal of Materials Processing Technology, 108, 307-313. https://doi.org/10.1016/S0924-0136(00)00842-6
- Moroni, F., Pirondi, A. and Kleiner, F. (2010) Experimental Analysis and Comparison of the Strength of Simple and Hybrid Structural Joints. International Journal of Adhesion and Adhesives, 30, 367-379. https://doi.org/10.1016/j.ijadhadh.2010.01.005
- Hirohata, M. (2015) Static Tensile Strength Characteristics of Fillet Welding Lap Joints Assisted with Bonding. Welding International, 30, 9-17.
- Hirohata, M. (2016) Elastic Mechanical Behavior of Spliced Joints Assembled by Fillet Welding and Bonding. Welding in the World, 60, 327-335. https://doi.org/10.1007/s40194-016-0298-8
- Hirohata, M. and Itoh, Y. (2018) Fatigue Characteristics of Patch Plate joints by Fillet Welding Assisted with Bonding. Welding International, 32, 243-253.
- Hirohata, M. and Itoh, Y. (2016) Fatigue Characteristics of Patch Plate Joints by Fillet Welding Assisted with Bonding. Quarterly Journal of Japan Welding Society, 33, 224-232. (In Japanese) https://doi.org/10.2207/qjjws.33.224
- Adams, C.M. (1958) Cooling Rates and Peak Temperatures in Fusion Welding. Welding Journal, 37, 210-215.
- Japan Welding Society (2015) Welding and joining Handbook. 2nd Edition, Maruzen. (In Japanese)