文献类型：期刊文献

英文题名：Seismic Analysis of Large-Scale Air Duct Hanger Based on ASME-AG1 Specifications

作者：Wang, Long[1]; He, Zhaokui[1]; Wang, Hehui[1]; Pan, Jian[2]; Tang, Yi[2]; Liu, Xiaohan[2]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Shanghai Installation Engineering Group Co., Ltd., Shanghai, 200080, China

年份：2024

卷号：2755

期号：1

外文期刊名：Journal of Physics: Conference Series

收录：EI(收录号：20242216181863)

语种：英文

外文关键词：Earthquakes - Finite element method - Modal analysis - Specifications - Spectrum analysis

摘要：For large-caliber mid-pressure ducts and its supporting rack systems, use the combination of shell units, beam units, and contact units to establish a three-dimensional finite element model of reality structure characteristics. Analyze the inherent frequency of the system. Based on modal analysis results, the eight-level earthquake response spectrum in Shanghai is used as input, a multi-point response spectrum analysis under OBE seismic conditions is performed on the rack system. According to the ASME AG-1 specification, the stress intensity and deformation stiffness assessment of the branch line-type structure under the combination of OBE operating conditions are evaluated. Results showed that the optimal form of the air tube of the A-B section was to increase the seismic oblique support and the inner wall was reinforced. The modeling and assessment methods in the paper have a certain reference value for large-scale duct resistance design and safety assessment. ? Published under licence by IOP Publishing Ltd.