A Study on Maintaining the Function of Water Piping,which Are Life Lines for Buildings

摘要

If an earthquake occurs, damage to water piping, which serve as the "life lines" for buildings and thus need to be kept in working order, can lead to secondary damage such as water leaks, making it difficult for the building to be used.In earthquake disasters in the past, collapsing water piping and damaged pipe joints have resulted in water leaks, which lead to temporarily shutting off these life lines, thus making using the building impossible.Given this background, existing sprinkler systems are different from ordinary building services and utilities in that it must be possible to easily maintain them and restore function immediately after an earthquake occurs.This is in order to preserve the life lines of the building in the event of a disaster,thus, if the building is in a sound condition, preventing the spread of fire in the immediate aftermath of the earthquake.There are concerns that a large-scale earthquake could occur in the near future, and it will be necessary to preserve the functions of automatic fire extinguishing equipment such as sprinkler systems in the event of such a disaster.To achieve this objective, we created a model of the type of sprinkler system installed in existing buildings and conducted shaking table tests and numerical analysis in order to explore effective earthquake-proof countermeasures.