진동대 실험을 통한 밸브실 시스템의 내진성능 평가
Evaluation of Seismic Performance of Valve Chamber System by Shaking Table Tests
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초록
연약지반에서의 도로 침하 및 지진에 의한 누수 및 수도관의 파열에 따라 배관시스템용 신축이음장치의 구조적 안전성이 강조되고있다. 일반적으로 배관 시스템의 다양한 손상을 방지하기 위해 신축이음에 금속 벨로우즈 사용하고 있다. 본 연구에서는 밸브실 시스템의 내진성능을 평가하기 위해 진동대를 이용하여 내진시험을 수행하였다. 밸브실과 강관연결부의 구조적 안전성 평가를 위하여 신축이음(벨로우즈) 및 일반배관을 적용하였으며, 변형률 게이지를 부착하여 지진동에 의한 영향을 분석하였다. 진동대 실험결과, 일반배관이 적용된 경우보다 신축이음(벨로우즈)을 설치한 경우에 밸브실 구조체 및 유입·유출관의 변형율 1/100 및 1/20 수준으로 감소를 확인하였다.
Abstract
The structural safety of expansion joints for piping systems has been drawing attention owing to ruptures and leaks of water pipes caused by earthquakes and road subsidence at soft ground. In general, metal bellows are installed as expansion joints to prevent various damages in the piping system. In this study, the seismic performance of a valve chamber system was evaluated by performing earthquake shaking table tests. To validate the benefits to structural safety of metal bellows in connecting steel pipes to valve chambers, the seismic tests were conducted on expansion joints (bellows) and general pipping, and the results were compared for durability. Strain gauges were attached to measure the effects of the input motion. As a result of the shaking table test, it was confirmed that the strain of the valve chamber structure and inflow or outflow steel pipes were decreased in 1/100, 1/20 by applied to the expansion joints.
참고문헌 (14)
- American Lifelines Alliance, "Seismic Guidelines for Water Pipelines", ~ (2005)
- Gawande, S. G., "A Combined Numerical and Experimental Investigation on the Effect of Dynamics Characteristics of Metal Expansion Bellows", Journal of Vibration Engineering & Technologies, 6, pp.401~416 (2018)
- Hao, Z., "Failure Mechanism of Unequal Parameters Metal Bellows under Repeated Bending Process", Engineering Failure Analysis, 129, pp.105671~ (2021)
- "ISO 16134, Earthquake Resistant and Subsidence Resistant Design of Ductile Iron Pipelines", International Organization for Standardization, ~ (2020)
- Jeon, B. G., "Seismic Performance Test of Multi-ply Metal Bellow-Type Expansion Joints", Journal of Korean Society for Advanced Composite Structures, 13(4), pp.9~17 (2022)
- Kim, S. W., "Seismic Performance Evaluation on Bending Deformation of 2-Ply and 3-Ply Bellows Expansion Pipe Joints", Journal of the Korea Institute for Structural Maintenance and Inspection, 27(2), pp.33~41 (2023)
- Korean Design Standard, "KDS 57 17 00, Waterworks Seismic Design Criteria", Ministry of Environment, ~ (2022)
- Korean Design Standard, "KDS 57 50 00, Conveyance Water Design Criteria", Ministry of Environment, ~ (2022)
- Water Management Annual Report, "K-water", ~ (2022)
- Koo, M. S., "A Case Study on the Differential Settlement of the Valve Chamber in Water Supply", Proceedings of the Korea Institute for Structural Maintenance and Inspection, 23(2), pp.147~148 (2019)
- 9.12 Earthquake White Paper, "Ministry of Public Safety and Security", Central Disaster and Safety Countermeasures Headquarters, ~ (2017)
- 2017 Pohang Earthquake White Paper, "Ministry of the Interior and Safety", Central Disaster and Safety Countermeasures Headquarters, ~ (2018)
- Seo, Y. D., "Ultimate Bending Performance and Fatigue Life of Single-layer and Multi-layer Bellows", Journal of Korean Society for Advanced Composite Structures, 14(1), pp.9~16 (2023)
- Yun, D. W., "Low Cycle Fatigue Reliability Tests for Earthquake and Subsidence-resistant Performance Evaluation for Bellows Joint System", Journal of Korean Society for Advanced Composite Structures, 12(6), pp.64~70 (2021)