Study on seismic performance of ceiling and sprinkler system

通过试验和数值分析，对在近期地震中发生严重破坏的天花板和自动喷水灭火系统的力学特性进行了检验。特别是定量地阐明了自动喷水灭火系统中吊顶钢结合件的力学特性、吊顶的自振周期、吊顶表面的抗压强度以及管道的疲劳性能。此外，本项目还开发了精确模拟此类系统的数值方法。

In this project, the mechanical characteristics of ceiling and sprinkler systems which have had serious damages in the recent earthquakes are examined through results by experimental tests and numerical analyses. Particularly, we clarify the mechanical characteristics of joint metal parts in the steel furring of ceiling, the natural period of ceiling, the compressive strength of a ceiling surface and the fatigue behavior of plumbing in a sprinkler system quantitatively. Furthermore, the numerical method to simulate such systems accurately is developed in this project.