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(1 中國建筑西南設(shè)計研究院有限公司, 成都 610041; 2 浙江大學(xué)高性能結(jié)構(gòu)研究所, 杭州 310058;3 浙江工業(yè)大學(xué)土木工程學(xué)院, 杭州 310014)
摘要: 鋼結(jié)構(gòu)的穩(wěn)定問題普遍存在于鋼結(jié)構(gòu)設(shè)計中,凡是鋼結(jié)構(gòu)的受壓部位,在設(shè)計時都必須認(rèn)真考慮其穩(wěn)定性。 根據(jù)《鋼結(jié)構(gòu)與鋼-混凝土組合結(jié)構(gòu)設(shè)計方法》,詳細(xì)介紹了鋼結(jié)構(gòu)穩(wěn)定驗算的實質(zhì)和注意事項,并結(jié)合鋼結(jié)構(gòu)穩(wěn)定驗算的實質(zhì),探討了抗震構(gòu)件和非抗震構(gòu)件的容許長細(xì)比,給出了不同剩余抗彎能力比下的框架柱軸壓比和長細(xì)比限值以及非抗震構(gòu)件的容許長細(xì)比建議。 最后介紹了《鋼結(jié)構(gòu)設(shè)計標(biāo)準(zhǔn)》 (GB 50017—2017)關(guān)于鋼支撐容許長細(xì)比的規(guī)定依據(jù)。
關(guān)鍵詞: 鋼結(jié)構(gòu); 穩(wěn)定性; 容許長細(xì)比; 支撐; 框架柱
中圖分類號:TU391 文獻(xiàn)標(biāo)志碼:A 文章編號:1002-848X(2022)24-0144-04
DOI:10. 19701 / j. jzjg. LZ2203
Understanding and application of Design method for steel strutures and steel-concrete combined structures:stability and slenderness ratio
ZHOU Jia1, TONG Genshu2, LI Changhong1, LIU Yifeng1, CHEN Di1, ZHAO Qin3
(1 China Southwest Architectural Design & Research Institute Corp. , Ltd. , Chengdu 610041, China; 2 Instituteof High-Performace Structures, Zhejiang University, Hangzhou 310058, China; 3 College of Civil Engineering,Zhejiang University of Technology, Hangzhou 310014, China)
Abstract:Steel structural stability issues are prevalent in the design of steel structures. For any compression part of thesteel structure, its stability must be carefully considered in the design. According to the Design method for steel structuresand steel-concrete combined structures, the essence and matters needing attention in the stability verifying of steel structurewere introduced in detail, combined with the essence of steel structure stability verifying, the allowable slenderness ratio ofseismic components and non-seismic components were investigated, suggestions were made for axial compression ratio limitand slenderness ratio limit of frame column under different residual bending capacity ratio and allowable slenderness ratio ofnon-seismic components. Finally, the basis for the allowable slenderness ratio of steel bracing in Standards for design ofsteel structures (GB 50017—2017)was introduced.
Keywords:steel structure; stability; allowable slenderness ratio; bracing; frame column
∗中國建筑西南設(shè)計研究院有限公司重點課題(R-2021-08-S-A-2023),浙江省建設(shè)科研項目(2021K091)。
第一作者:周佳,碩士,高級工程師,一級注冊結(jié)構(gòu)工程師,主要從事鋼結(jié)構(gòu)、組合結(jié)構(gòu)和復(fù)雜結(jié)構(gòu)的設(shè)計研究,Email:83294306@ qq. com。
[引用本文] 周佳,童根樹,李常虹,等. 鋼結(jié)構(gòu)與鋼-混凝土組合結(jié)構(gòu)設(shè)計方法》的理解與應(yīng)用———穩(wěn)定和長細(xì)比[J]. 建筑結(jié)構(gòu), 2022, 52 ( 24): 144-147, 143. ZHOU Jia, TONG Genshu, LI Changhong, et al. Understanding andapplication of design method for steel strutures and steel-concrete combined structures:stability and slenderness ratio [ J].Building Structure,2022,52(24):144-147,143.
