Research Field
Seismic Design
- 「Act on Prevention of Fire, Installation and Maintenance and Safe Management of Fire Facilities」
- According to 2 of Article 9 (Criteria of Seismic Design of Fire Facilities) 「Act on Measures against EarthquakeㆍVolcano Disaster」, in case of an earthquake, fire facilities shall be installed to comply with criteria of seismic design that is regulated by Minister of Public Safety and Security, Republic of Korea so that fire facilities operate properly. The purpose of seismic design of fire facilities is to prevent leakage of gases and liquids etc. due to cracks by preventing decline of mechanical performance and damage of facilities and breakage of pipe joints and exfoliation of internal and external walls etc.
- Fig 1. Floor equipment seismic design item
- Fig 2. Evaluation on Performance of Product
- Seismic snubber
- In case of installing spring vibration-proof devices on every sort of HVAC equipment, when diastrophism or huge external impact vibration are transmitted to the HVAC equipment, the impact vibration causes torsion or inclination of the HVAC equipment or rupture of pipe joints, and at that moment, a USS earthquake buffer is designed for stability of the HVAC equipment or absorption of vibration.
- Horizontal Direction Check
- Fig 5. On-Site Installation of Buffer for Earthquake
- Horizontal Direction Check
- Fix 6. On-Site Installation of Buffer for Earthquake
- Seismic stopper series
- It is a restricting device not to cause excessive displacement by seismic load and the impact force due to seismic load is reduced by a neoprene pad with elasticity.
- 그림1. All-directional seismic stopper structure analysis
- Fig 1. Plate seismic stopper structure analysis
- Fig 3. Evaluation on Performance of Product
- Seismic Clamp
- The function of 4-way brace that is mandatory to be installed at a standpipe is performed according to the criteria of seismic design of fire facilities by Announcement #2015-138 of Minister of Public Safety and Security, Republic of Korea.
- Fig 1. seismic clamp 3D modeling
- Fig 2. seismic clamp structure analysis (1)
- Fig 3. seismic clamp structure analysis (2)
- Brace Attachment Structure
- It is a tightening device of a brace (an angle iron type, wire) to prevent shaking by an earthquake that is used for pipes and prevents damage of pipes along with braces since it is made with sufficient strength that can tolerate horizontal seismic load.
- Fig 1. Brace Attachment Structure Analysis
- Groove joint
- It is a piping method that is most appropriate for diverse piping such as hygiene, air conditioning, fire pipes etc. and may have comprehensive effects such as absorption of shrinkage and expansion of pipes and absorption of noise etc. It is a simple assembly type that does not require welding and the planned construction is available since it is easy to obtain manpower and its construction is very simple and convenient and construction period can be reduced.
- Fig 1. Groove joint Structure
- Fig 2. On-Site Installation of Groove joint
