本文關(guān)鍵詞： 地震動反應(yīng)譜 荷載分布 最大位移 層間位移角 薄壁鋼結(jié)構(gòu)　出處：《計算機集成制造系統(tǒng)》2017年09期 　論文類型：期刊論文

【摘要】：與傳統(tǒng)的建筑鋼結(jié)構(gòu)不同,冷彎薄壁鋼結(jié)構(gòu)的動力穩(wěn)定性與其荷載分布相關(guān)。以單/雙列薄壁鋼結(jié)構(gòu)立體貨架為例,通過有限元數(shù)值計算研究了不同荷載分布及其模態(tài)振型的變化規(guī)律;考慮梁柱節(jié)點的滯回特性,以施加加速度激勵的方式分別在巷道和垂直巷道兩個方向上對單雙列貨架進行了地震動反應(yīng)譜分析。結(jié)果顯示,荷載分布對貨架垂直巷道方向的動力穩(wěn)定性敏感;地震沖擊造成鋼結(jié)構(gòu)底部層間位移角增大,從而導(dǎo)致結(jié)構(gòu)性坍塌。拉桿增強設(shè)計有利于改善薄壁鋼結(jié)構(gòu)的動力穩(wěn)定性,為基于抗震性能的空間拓撲優(yōu)化提供了參考。
[Abstract]:Unlike traditional steel structures, the dynamic stability of cold-formed thin-walled steel structures is related to their load distribution. The variation law of different load distribution and modal mode is studied by finite element method, and the hysteretic characteristic of Liang Zhu joint is considered. The ground motion response spectrum of single and double rows of shelves is analyzed in both directions of roadway and vertical roadway by applying acceleration excitation. The results show that the load distribution is sensitive to the dynamic stability of the vertical roadway direction of the shelf. The seismic shock results in the increase of the displacement angle between the bottom layers of the steel structure, which leads to the structural collapse. The strengthening design of the tension bar is helpful to improve the dynamic stability of the thin-walled steel structure, and provides a reference for the spatial topology optimization based on the seismic behavior.
【作者單位】： 東華大學(xué)機械工程學(xué)院;上海物流倉儲設(shè)備工程技術(shù)研究中心;上海精星物流設(shè)備工程有限公司;
【基金】：上海市自然科學(xué)基金資助項目(15ZR1400600) 上海市科委標準建設(shè)資助項目(15DZ0500400)~~
【分類號】：TG142.12
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本文編號：1515241