Seismic retrofitting of timber framed walls
DOI:
https://doi.org/10.3989/mc.2014.06913Keywords:
Timber framed walls, Strengthening, Earthquake, Elastic-plastic dampers, Steel plates, Reinforced renderingAbstract
After the 1755 earthquake that destroyed Lisbon, an innovative anti-seismic structural system was developed consisting of a timber skeleton, that included timber framed masonry walls. After more than 250 years these structures need rehabilitation to face the present demands. The research presented in this paper aimed at experimentally characterizing the cyclic behaviour of timber framed walls reinforced with three different methods, namely: (i) elastic-plastic dampers on diagonal braces, (ii) reinforcement of timber connections with steel plates, (iii) application of a reinforced rendering. The elastic-plastic damper showed an unsymmetrical behaviour and some difficulties to implement in practice. The strengthening with reinforced render led to an initial stiffness increase but showed a limited deformation capacity. The walls with reinforcing steel plates at the timber connections showed the best behaviour in terms of strength, stiffness and energy dissipation.
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1. Dutu, A.; Ferreira, J.; Guerreiro, L.; Branco, F.; Gonçalves, A. (2012) "Timbered masonry for earthquake resistance in Europe", Mater. Construcc. 62 [308], 615–628. http://dx.doi.org/10.3989/mc.2012.01811
2. Appleton, J. (2003) Rehabilitation of old Buildings, Pathologies and techniques of intervention (in Portuguese). Lisboa: Orion.
3. Ferreira, J.G.; Teixeira, M.J.; Dutu, A.; Branco, F.; Gonçalves, A. (2014) Experimental Evaluation and Numerical Modelling of Timber Framed Walls, Experimental Techniques, 38 [44], 45–53. http://dx.doi.org/10.1111/j.1747-1567.2012.00820.x
4. Krawinkler, H.; Parisi, F.; Ibarra, L.; Ayoub, A.; Medina, R. (2000) Development of a testing protocol for wood frame structures, Krawinkler. CUREE-Caltech Woodframe Project Rep., Stanford University, Stanford, California.
5. Meireles, H.; Bento, R. (2010) Cyclic Behaviour of Pombalino Frontal Walls. Proceedings of the 14th European Conference on Earthquake Engineering (14ECEE), Ohrid, F.Y.R.O.Macedonia.
6. EN 1991-1-1:2002 - Eurocode 1: Actions on structures - Part 1-1: General actions - Densities, self-weight, imposed loads for buildings., CEN – European Committee for Standardization, Brussels, 2002.
7. EN 10002-1:2001 –Metallic materials – Tensile testing, Part 1: Method of test at ambient temperature., CEN – European Committee for Standardization, Brussels, 2001.
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