Seismic Response Estimation of Water Extinguishing Facilities using Shaking Table Tests

Abstract

>> In this study, a shaking table test was performed for the evaluation of water extinguishing facilities. Water extinguishing facilities, such as a general pipe, a seismic pipe (Loof type) and a pump, were used in the experiment. This captured the dynamic characteristics of water extinguishing systems by earthquake records at El-Centro with a 50%, 70%, 100%, 120% level. As a result, seismic type facilities have excellent seismic performance compared to general facilities. By using the acceleration response spectrum, not only is the performance evaluation of water extinguishing facilities able to be determined, but also the deformation of facilities in low earthquake levels can be known. This proposed approach can determine the seismic performance evaluation of water extinguishing facilities and verify seismic performance criteria.

Changes in the Levels of Stress Perception, Experiencing Depressive Symptoms and Health-Related Quality of Life of Residents after the 2016 Gyeongju Earthquake

“…In the case of the 2016 Gyeongju Earthquake, the following may have helped reduce the rate of depressive symptoms in 2017 as there were only minor injuries and no deaths. As the seismic center of the 2016 earthquake was deep and the duration was short, the physical damage from the earthquake was relatively minimal despite the fact that it was the biggest earthquake reported in Korean Peninsula [ 16 , 46 ]. In addition, the regional disaster response center provided psychological support services to victims [ 6 ].…”

“…The province sustained property damages estimated at KRW 10.6 billion, apart from damage to cultural assets in the Daeungjeon of the Bulguksa Temple and the Cheomseongdae Observatory [ 6 , 7 ]. The repeated aftershocks not only increased the levels of anxiety amongst Gyeongju residents [ 6 , 16 ] but also may have affected their overall QOL [ 7 ] due to the subsequent difficulties in their daily lives. Since Gyeongju has many of Korea’s World Heritages sites, designated by United Nations Educational, Scientific and Cultural Organization (UNESCO), including Seokguram, Bulguksa, and Yangdong villages [ 17 ], it is an area where school trips, academic meetings, and international events are held.…”

“…Sangju is in North Gyeongsang Province, and it is far from earthquake-prone areas. Yangju is in Gyeonggi Province, and it reported the lowest seismic intensity among the three regions according to the Korea Meteorological Administration [ 16 ] ( Figure 1 ).…”

“…Studies specifically on the 2016 earthquake include a qualitative study on “victims’ daily life experience” [ 19 ], a structural model research on the QOL of victims in the cities of Gyeongju and Pohang [ 20 ], and the life satisfaction of Gyeongju residents [ 7 ]. Meanwhile, international research related to earthquakes has examined the physical and psychological health as well as the QOL of specific victim groups such as college students, soldiers performing earthquake recovery work, firemen, and earthquake survivors [ 16 , 21 , 22 , 23 ]. In addition, there was a study on the prevalence rate of depression six months after the attack on the World Trade Center [ 24 ], and a study on PTSD after the Wenchuan earthquake at the community level [ 25 ].…”

Seismic Performance Evaluation and Analysis of Vertical Hydrogen Storage Vessels Based on Shaking Table Testing

“…The method allowed for accurate reproduction of response spectra in multiple directions, verifying the seismic performance [24]. Nam (2012) conducted seismic performance evaluations of water-based fire protection systems (general piping, seismic-resistant piping, pumps, etc.) through shaking table tests.…”