Jiaqing Zhang, Rui Liu, Jianlin Li, Yi Guo, Yang He
{"title":"火灾条件下变电站人字形钢框架柱弯曲和扭转屈曲临界温度的计算方法*","authors":"Jiaqing Zhang, Rui Liu, Jianlin Li, Yi Guo, Yang He","doi":"10.1002/cepa.3181","DOIUrl":null,"url":null,"abstract":"<p>The weak position of the frame columns is determined by analyzing the structural form and working characteristics of the herringbone steel frame columns (HSFC) in substation. Based on the equilibrium method, the formula for calculating the bending and torsional buckling load of the HSFC at ambient temperature has been derived. Then, the critical temperature of the bending and torsional buckling of the HSFC under fire conditions can be developed, by incorporating the effect of high temperature on the modulus of elasticity of steel. Five fire tests on the HSFCs were conducted to determine the critical temperatures of the bending and torsional buckling of the HSFC under different load ratios, and the test results verified the validity of the proposed method.</p>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"8 2","pages":"925-935"},"PeriodicalIF":0.0000,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Calculation Method for the Critical Temperature of Bending and Torsional Buckling of the herringbone steel frame columns in Substations Under Fire Conditions*\",\"authors\":\"Jiaqing Zhang, Rui Liu, Jianlin Li, Yi Guo, Yang He\",\"doi\":\"10.1002/cepa.3181\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The weak position of the frame columns is determined by analyzing the structural form and working characteristics of the herringbone steel frame columns (HSFC) in substation. Based on the equilibrium method, the formula for calculating the bending and torsional buckling load of the HSFC at ambient temperature has been derived. Then, the critical temperature of the bending and torsional buckling of the HSFC under fire conditions can be developed, by incorporating the effect of high temperature on the modulus of elasticity of steel. Five fire tests on the HSFCs were conducted to determine the critical temperatures of the bending and torsional buckling of the HSFC under different load ratios, and the test results verified the validity of the proposed method.</p>\",\"PeriodicalId\":100223,\"journal\":{\"name\":\"ce/papers\",\"volume\":\"8 2\",\"pages\":\"925-935\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-03-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ce/papers\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/cepa.3181\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ce/papers","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cepa.3181","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Calculation Method for the Critical Temperature of Bending and Torsional Buckling of the herringbone steel frame columns in Substations Under Fire Conditions*
The weak position of the frame columns is determined by analyzing the structural form and working characteristics of the herringbone steel frame columns (HSFC) in substation. Based on the equilibrium method, the formula for calculating the bending and torsional buckling load of the HSFC at ambient temperature has been derived. Then, the critical temperature of the bending and torsional buckling of the HSFC under fire conditions can be developed, by incorporating the effect of high temperature on the modulus of elasticity of steel. Five fire tests on the HSFCs were conducted to determine the critical temperatures of the bending and torsional buckling of the HSFC under different load ratios, and the test results verified the validity of the proposed method.
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