Real-Time Building Damage Estimation System Based on Observed Building Response

Abstract eng:
It is important to maintain building functions following a large earthquake, and this requires a reasonable level of structural seismic capacity. Business continuity plans are generally drawn up for business continuity as much as possible and to scale down the influence of damage suffered in a large earthquake. It is therefore very important to instantaneously assess damage to many buildings and to determine their levels of usability. This is necessary to enable realistic changes to business continuity plans. To this end, a real-time damage estimation system for buildings has been newly developed. This system can quickly estimate building damage and send damage information by computer network to disaster headquarters or to other buildings. Damage information of all target buildings can then be displayed at disaster headquarters. This information can also be shared on a computer network. In this system, target buildings are classified into four ranks according their importance. Structural damage and damage to equipment and secondary systems are assessed in a way that is appropriate to the building’s rank. This system has been applied to Kajima’s buildings (Headquarters and branches) and is operational. Every time a small or medium-sized earthquake occurs, the accuracy of the evaluated responses and estimation of damage to each building has been improved, and it is thus hoped that the system will provide accurate results following a future large earthquake.

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