Seismic Risks Mitigation of Façadism Constructions with Supplemental Energy Dissipation


  • Ricky W.K. Chan School of Engineering, RMIT University, Australia
  • Shilin Wang Faculty of Architecture, Building and Planning , University of Melbourne, Australia
  • Waiching Tang School of Architecture and Built Enviroment, The University of Newcastle, Australia



unreinforced masonry , facadism, heritage conservation , seismic risk mitigation , passive energy dissipation


Urban renewal projects typically involve redevelopments of under-utilized old buildings and revitalizing precious land resources. Due to architectural and social-economic reasons, historical façades are sometimes retained, and new constructions are built behind them. This allows the historical façade, typically the street elevation, to remain while new real estate can be redeveloped. In the profession of architecture, this is called façadism. In many cases, these historical façades are constructed with unreinforced masonry (URM). When these facades are retained and the remaining of the building is demolished, they become free-standing walls. Temporary supports are required throughout construction works and the retained façades must be designed to prevent excessive movements, allowed for differential movements and to resist wind forces. These historical façades were made of brittle materials and were constructed many decades ago before modern design standards and materials are available. They possess very little ductility and become vulnerable when subjected to ground shaking. The present study suggests a structural system that attempts to mitigate seismic risk of façadism constructions effectively. The structural system divides the new construction, which can be a reinforced concrete structure or a steel frame structure, into two separate frames. A seismic gap is introduced between them and produces two systems of different vibrational characteristics. Supplemental energy dissipating devices such as viscous fluid or friction dampers are placed in-between adjacent floors. The proposed structural system utilizes the different vibrational responses of two frames to facilitate energy dissipation in dampers. In this article, governing equations are presented, followed by numerical simulations using historical earthquake acceleration histories. Results demonstrate that the suggested structural system is an effective methodology to suppress seismic responses of the façade and the new construction. It is concluded that damage on the retained façades can be prevented, and at the same time seismic responses to the newly constructed structure can be controlled.


Abdulla, K., Cunningham, L., & Gillie, M. (2017). Simulating masonry wall behaviour using a simplified micro-model approach. Engineering Structures, 151, 349.

Alshawa, O., Sorrentino, L., & Liberatore, D. (2017). Simulation Of Shake Table Tests on Out-of-Plane Masonry Buildings. Part (II): Combined Finite-Discrete Elements. International Journal of Architectural Heritage, 11(1), 79-93. doi:10.1080/15583058.2016.1237588

Bedon, C. & Amadio, C. (2017). Enhancement of the seismic performance of multi-storey buildings by means of dissipative glazing curtain walls. Engineering Structures, 152, 320-334. doi:10.1016/j.engstruct.2017.09.028

Bedon, C. & Amadio, C. (2018). Numerical assessment of vibration control systems for multi-hazard design and mitigation of glass curtain walls. Journal of Building Engineering, 15, 1-13. doi:10.1016/j.jobe.2017.11.004

Bhaskararao, A.V. & Jangid, R.S. (2006). Seismic analysis of structures connected with friction dampers. Engineering Structures, 28(5), 690-703. doi:10.1016/j.engstruct.2005.09.020

Bullen, P.A. & Love, P.E.D. (2011). Adaptive reuse of heritage buildings. Structural Survey, 29(5), 411-421. doi:10.1108/02630801111182439

Candeias, P.X., Campos Costa, A., Mendes, N., Costa, A.A., & Lourenço, P.B. (2017). Experimental Assessment of the Out-of-Plane Performance of Masonry Buildings Through Shaking Table Tests. International Journal of Architectural Heritage, 11(1), 31-58. doi:10.1080/15583058.2016.1238975

Chácara, C., Mendes, N., & Lourenço, P.B. (2017). Simulation of Shake Table Tests on Out-of-Plane Masonry Buildings. Part (IV): Macro and Micro FEM Based Approaches. International Journal of Architectural Heritage, 11(1), 103-116. doi:10.1080/15583058.2016.1238972

Chan, R.W.K. & Hu, B. (2016). Numerical and experimental investigation into friction devices installed between concrete columns and steel beams. In C. Z. Hong Hao (Ed.). Taylor and Francis Group (United Kingdom).

Chang, C.-M., Strano, S., & Terzo, M. (2016). Modelling of Hysteresis in Vibration Control Systems by means of the Bouc-Wen Model. Shock and Vibration, 2016. doi:10.1155/2016/3424191

Constantinou, M., Mokha, A., & Reinhorn, A. (1990). Teflon Bearings in Base Isolation II: Modeling. Journal of Structural Engineering, 116(2), 455-474. doi:10.1061/(asce)0733-9445(1990)116:2(455)

Constantinou, M.C. & Symans, M.D. (1993). Experimental study of seismic response of buildings with supplemental fluid dampers. Journal of Structural Design of Tall Buildings, 2(2), 93-132.

Dal Lago, B., Negro, P., & Dal Lago, A. (2018). Seismic design and performance of dry-assembled precast structures with adaptable joints. Soil dynamics and earthquake engineering (1984), 106, 182-195. doi:10.1016/j.soildyn.2017.12.016

Darley, G. (2015). Facadism. Architects' Journal, 241(7), 70-71.

De Domenico, D., Ricciardi, G., & Takewaki, I. (2019). Design strategies of viscous dampers for seismic protection of building structures: A review. Soil Dynamics and Earthquake Engineering, 118, 144-165. doi:10.1016/j.soildyn.2018.12.024

Derakhshan, H., Nakamura, Y., Ingham, J.M., & Griffith, M.C. (2017). Simulation of Shake Table Tests on Out-of-Plane Masonry Buildings. Part (I): Displacement-based Approach Using Simple Failure Mechanisms. International Journal of Architectural Heritage, 11(1), 72-78. doi:10.1080/15583058.2016.1237590

Ferreira, T., Vicente, R., & Varum, H. (2010). Seismic vulnerability assessment of masonry façade walls. Paper presented at the 14th European Conference on Earthquake Engineering, Ohrid, Republic of Macedonia.

Figueiredo, A., Varum, H., Costa, A., Silveira, D., & Oliveira, C. (2013). Seismic retrofitting solution of an adobe masonry wall. Materials and Structures, 46(1), 203-219. doi:10.1617/s11527-012-9895-1

Griffith, M.C. & Vaculik, J. (2007). Out-of-Plane Flexural Strength of Unreinforced Clay Brick Masonry Walls. TMS Journal, 25(1), 53-68.

Grigorian, C.E., Yang, T.S., & Popov, E.P. (1993). Slotted Bolted Connection Energy Dissipators. Earthquake Spectra, 9(3), 491-504. doi:10.1193/1.1585726

Habibi, A., Chan, R.W.K., & Albermani, F. (2013). Energy-based design method for seismic retrofitting with passive energy dissipation systems. Engineering Structures, 46, 77-86.

IIT Enidine Inc. Viscous dampers / Seismic dampers.

Ingham, J. & Griffith, M. (2010). Performance of Unreinforced Masonry Buildings During the 2010 Darfield (Christchurch, Nz) Earthquake. Australian Journal of Structural Engineering, 11(3), 207-224. doi:10.1080/13287982.2010.11465067

Ingham, J.M., Moon, M., & Griffith, M.C. (2011). Performance of Masonry Buildings in the 2010/2011 Canterbury Earthquake Swarm and Implications for Australian Cities. Paper presented at the Australian Earthquake Engineering Society 2011 Conference, Barossa Valley, South Australia.

Mariangela De, V., Antonio, M., Antonio, S., & Alessio, M. (2018). Seismic Retrofit Measures for Masonry Walls of Historical Buildings, from an Energy Saving Perspective. Sustainability, 10(4), 984. doi:10.3390/su10040984

Moës, N., Dolbow, J., & Belytschko, T. (1999). A finite element method for crack growth without remeshing. International Journal for Numerical Methods in Engineering, 46(1), 131-150. doi:10.1002/(SICI)1097-0207(19990910)46:1<131::AID-NME726>3.0.CO;2-J

Mualla, I.H., Jakupsson, E.D., & Nielsen, L.O. (2010). Structural Behavior of 5000kN Damper. Paper presented at the 14th European conference on earthquake engineering, Ohrid, North Macedonia.

Nakamura, Y. & Okada, K. (2019). Review on seismic isolation and response control methods of buildings in Japan. Geoenvironmental disasters, 6(1), 1-10. doi:10.1186/s40677-019-0123-y

Negro, P. & Lamperti Tornaghi, M. (2017). Seismic response of precast structures with vertical cladding panels: The SAFECLADDING experimental campaign. Engineering Structures, 132, 205-228. doi:10.1016/j.engstruct.2016.11.020

Ohtori, Y., Christenson, R.E., Spencer, B.F., Jr., & Dyke, S.J. (2004). Benchmark control problems for seismically excited nonlinear buildings. Journal of Engineering Mechanics, 130(4), 366. doi:10.1061/(ASCE)0733-9399(2004)130:4(366)

Reinhorn, A.M. & Constantinou, M.C. (1995). Experimental and Analytical Investigation of Seismic Retrofit of Structures with Supplemental Damping, Part 1: Fluid Viscous Damping Devices. Retrieved from

Reitherman, R. & Perry, S.C. (2009). Unreinforced Masonry Buildings and Earthquakes.

Rihal, S.S. (1988). Seismic behavior and design of precast façades/claddings & connections on low/medium-rise buildings. Retrieved from

Senaldi, I., Magenes, G., & Ingham, J.M. (2014). Damage Assessment of Unreinforced Stone Masonry Buildings After the 2010-2011 Canterbury Earthquakes. International Journal of Architectural Heritage. doi:10.1080/15583058.2013.840688

Solarino, F., Oliveira, D.V., & Giresini, L. (2019). Wall-to-horizontal diaphragm connections in historical buildings: A state-of-the-art review. Engineering Structures, 199, 109559. doi:10.1016/j.engstruct.2019.109559

Soltanzadeh, G., Osman, H., Vafaei, M., & Vahed, Y. (2018). Seismic retrofit of masonry wall infilled RC frames through external post-tensioning. Official Publication of the European Association for Earthquake Engineering, 16(3), 1487-1510. doi:10.1007/s10518-017-0241-4

Soong, T.T. & Costantinou, M.C. (2014). Passive and active structural vibration control in civil engineering (Vol. 345). Springer.

Spencer, B.F., Jr., Dyke, S.J., Sain, M.K., & Carlson, J.D. (1997). Phenomenological model for magnetorheological dampers. Journal of Engineering Mechanics, 123(3), 230. doi:10.1061/(ASCE)0733-9399(1997)123:3(230)

Symans, M., Charney, F., Whittaker, A., Constantinou, M., Kircher, C., Johnson, M., & McNamara, R. (2008). Energy Dissipation Systems for Seismic Applications: Current Practice and Recent Developments. Journal of Structural Engineering, 134(1), 3-21. doi:doi:10.1061/(ASCE)0733-9445(2008)134:1(3)

Taghdi, M., Bruneau, M., & Saatcioglu, M. (2000). Seismic retrofitting of low-rise masonry and concrete walls using steel strips. Journal of Structural Engineering, 126(9), 1017-1025. doi:10.1061/(ASCE)0733-9445(2000)126:9(1017)

Tam, V.W.T., Le, K.N., & Wang, J.Y. (2018). Cost Implication of Implementing External Façade Systems for Commercial Buildings. Sustainability, 10(6), 1917. doi:10.3390/su10061917

Taylor Devices Inc. Fluid Viscous Dampers.

Tiziana, B. & Daniele, E. (2018). Seismic and Energy Retrofit of the Historic Urban Fabric of Enna (Italy). Sustainability, 10(4), 1138. doi:10.3390/su10041138

Triantafillou, T.C. (2001). Seismic retrofitting of structures with fibre-reinforced polymers. Progress in Structural Engineering and Materials, 3(1), 57-65. doi:10.1002/pse.61

Wang, S.J., Lin, W.C., & Yang, C.Y. (2017). Recent Progress in Taiwan on Seismic Isolation, Energy Dissipation, and Active Vibration Control. Paper presented at the 2017 New Zealand Society Earthquake Engineering Conference.

Wen, Y.K. (1976). Method for Random Vibration of Hysteretic Systems. Journal of the Engineering Mechanics Division-Asce, 102(2), 249-263.

Xu, Y., He, Q., & Ko, J. (1999). Dynamic response of damper- connected adjacent buildings under earthquake excitation. 21(2), 135-148.

Zhu, X. & Lu, X. (2011). Parametric Identification of Bouc-Wen Model and Its Application in Mild Steel Damper Modeling. Procedia Engineering, 14(C), 318-324. doi:10.1016/j.proeng.2011.07.039




How to Cite

Chan, R. W., Wang, S., & Tang, W. (2021). Seismic Risks Mitigation of Façadism Constructions with Supplemental Energy Dissipation. Journal of Facade Design and Engineering, 9(2).