UK engineers develop device for earthquake-proofing buildings
UK developed structural engineering technology could protect buildings from the impact of earthquakes or blasts, preventing collapse and reducing the damage caused.
Developed by a group at Heriot-Watt University in Edinburgh, the system makes use of stainless steel ‘sacrificial devices’ which are placed strategically in the structure so that they are the only damaged components during earthquake loading.
Current European ‘earthquake-proof’ buildings were designed to prevent collapse in the event of a strong earthquake. However, they do not prevent extensive damage that is difficult to repair, or the permanent deformation of a building after it has stopped shaking (also known as residual drift). Typically, If buildings experience one or both of these factors, the cost of repairs can become prohibitive, and demolition may be the only viable option.
Dr George Vasdravellis, assistant professor in structural engineering at Heriot-Watt University in Edinburgh, has used computer simulations to prove that his new system minimises the damage caused to buildings up to 10 storeys high in an area of high seismicity, with one in 475-year seismic events.
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