【摘要】：為改善結(jié)構(gòu)柱抗沖擊性能,提出最優(yōu)截面形式,對不同截面的新型復(fù)合柱進行了抗沖擊試驗研究,并基于3種通用動力非線性有限元軟件MSC.Marc、ABAQUS和ANSYS/LS-DYNA對撞擊試驗進行了數(shù)值模擬。試驗結(jié)果表明新型復(fù)合柱的整體抗沖擊性能較好;在相同外徑和用鋼量下,實心夾層鋼管混凝土抗沖擊性能最佳,空心夾層鋼管混凝土抗沖擊性能次之,內(nèi)插雙H型鋼鋼管混凝土稍差。ABAQUS建立的有限元模型和試驗結(jié)果吻合最好,MSC.Marc次之,ANSYS/LS-DYNA稍差。研究結(jié)果可為新建大型鐵路站房柱抗沖擊選擇最優(yōu)截面提供依據(jù),并為選取適合的有限元軟件進行抗沖擊分析提供參考。
[Abstract]:In order to improve the shock resistance of structural columns, an optimal section form is proposed. The new composite columns with different cross-sections are tested and studied. Based on three kinds of general nonlinear finite element software MSC.Marc, the impact resistance of composite columns with different sections is studied. The impact test was simulated by ABAQUS and ANSYS/LS-DYNA. The experimental results show that the whole impact resistance of the new composite column is better. Under the same external diameter and steel content, the impact resistance of solid sandwich concrete filled steel tube is the best, and that of hollow sandwich steel tube concrete is the second. The finite element model established by ABAQUS is in good agreement with the experimental results, followed by MSC.Marc and ANSYS/LS-DYNA. The results can provide the basis for selecting the optimal section of the columns of the new large railway station and provide a reference for the selection of the appropriate finite element software for the anti-impact analysis.
【作者單位】： 蘭州理工大學(xué)防震減災(zāi)研究所;清華大學(xué)土木工程系;
【基金】：鐵道部科技研究開發(fā)計劃重點課題項目(2012G003-J) 清華大學(xué)自主研究項目(2012TH Z06) 國家自然科學(xué)基金項目(51222804) 大型先進壓水堆核電站國家科技重大專項CAP1400安全評審技術(shù)及獨立驗證試驗項目(2011ZX06002-10)
【分類號】：TU398.9

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