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作者: Shen Hong-xia 文題: Behavior of high-strength steel welded rectangular section beam-columns with slender webs. 期刊名,年份,卷(期),起止頁碼: Thin-Walled Structures, 2015, 88(3): 16-27. |
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Behavior of high-strength steel welded rectangular section beam-columns with slender webs 作者:Shen, HX (Shen, Hong-Xia) THIN-WALLED STRUCTURES 卷: 88 頁: 16-27 出版年: MAR 2015 摘要 This paper develops a double nonlinear finite element model that can take account of both geometric and material imperfections. On verified the numerical model the behavior and ultimate carrying capacity of eccentrically loaded welded thin-webbed rectangular section columns made from high strength steel with a nominal yield stress of 460 MPa are analyzed, and further the influences of the slenderness ratio, web depth-to-thickness ratio, flange width-to-thickness ratio, and relative eccentricity ratio on the ultimate carrying capacity are investigated. On the basis of these, the simple calculation formulas, which use the gross cross-section properties, for predicting the in-plane maximum strength of high strength steel beam-columns with large depth-to-thickness ratios are proposed. It shows that the developed finite element model can simulate the local-overall interaction buckling behavior of the eccentrically loaded welded box-section compression members. A brittle failure characteristic is found with a relatively steeper drop just after the peak in the load-displacement curve. A nonlinear and complex stress distribution, in the longitudinal direction, when reaching the ultimate capacity, seriously deviates from an elastic stress distribution, on the basis of which, the effective width is determined. The non-dimensional ultimate bearing capacity is approximately linear with the slenderness, depth-to-thickness ratio and width-to-thickness ratio, respectively. The interaction curves between the axial force and flexural moment for the high-strength steel thin-webbed rectangular section beam-columns are nearly linear. After introducing a steel yield strength modification factor, the formula based on the edge fiber yielding criterion can precisely predict the local-overall interactive buckling strength of high strength steel beam-columns. (C) 2014 Elsevier Ltd. All rights reserved. 關鍵詞 作者關鍵詞:High strength steel; Welded rectangular section; Eccentric compression members; Local-overall interaction buckling; Ultimate carrying capacity; Finite element method KeyWords Plus:WALLED BOX COLUMNS; COMPRESSION MEMBERS; PLATE ELEMENTS; FINITE-ELEMENT; DESIGN 作者信息 通訊作者地址:Shen, Hong-Xia (通訊作者),Xian Univ Architecture & Technol, Sch Civil Engn, Xian 710055, Peoples R China 地址: [ 1 ] Xian Univ Architecture & Technol, Sch Civil Engn, Xian 710055, Peoples R China 電子郵件地址:shenhongxia888@163.com 出版商 ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND, https://www.elsevier.com 類別 / 分類 研究方向:Engineering CC 專輯/合集:Engineering, Computing & Technology (ECT) 學科:CIVIL ENGINEERING 文獻信息 文獻類型: Article 語種:English 入藏號: CCC:000348954800002 ISSN: 0263-8231 期刊信息 目錄: Current Contents Connect® Impact Factor (影響因子): Journal Citation Reports® 其他信息 ISI 文獻傳遞號: CA5NJ [ 發(fā)自小木蟲客戶端 ] |

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