高層建物における配管応力解析手法の確立と実施例

摘要

東日本大震災では，建物内部の内装材や設備機器類は損傷が多く見られ，設備の耐震性が課題となっている。配管応力解析システムは，設備システムにおける配管の耐震性確保と経済性の向上を実現する設計•解析手法である。以下に主な特長を示す。1) ASME基準で応力を評価する設計•解析手法を確立2) 配管に発生する地震力•熱応力•内圧を見える化3) 地震時での高層建物の1/80層間変位を検証可能4) 各階の応答加速度に対応し配管材の管種を最適化5) 立て管上の伸縮継手の削減により漏水のリスクを低減。%There were many cases seen of damage to the internal materials, equipment and machines of buildings caused by the Great East Japan Earthquake and the seismic resistance of this equipment is becoming an issue.The piping stress analysis system is an original design and analysis method which ecures the seismic resistance of piping in equipment systems and realizes improvements in its economic efficiency. I show below a main good point. 1)Establishment of a design and analysis method to evaluate stress with ASME standards 2) Visualization of the seismic force, thermal stress and internal pressure occurring in piping 3) Can verify a 1/ 80 relative story displacement in high-rise buildings during earthquakes 4) Optimization of types of piping materials to suit the response acceleration on each floor 5) The reduction of expansion joints on vertical pipes reduces the risk of leakage.