發(fā)布時間：2019-04-19 03:42

【摘要】：采用廣義塑性鉸線法對H形截面鋼構(gòu)件繞強軸壓彎區(qū)段板件組的極限狀態(tài)進行了分析,并選用合理假定求解受壓翼緣屈曲后達到的極限承載力;分析了表征極限狀態(tài)截面的應力分布,并研究了周邊板件約束與受壓翼緣板件厚實程度對屈曲翼緣發(fā)展塑性的影響;采用考慮板件屈曲相關(guān)的等效荷載法分析了構(gòu)件截面極限狀態(tài)應力分布,針對廣義塑性鉸線法相對于傳統(tǒng)塑性鉸線法的適用性拓展及其應用現(xiàn)狀,分析其存在的問題并做出解答;將計算結(jié)果與試驗結(jié)果及有限元結(jié)果進行了對比。結(jié)果表明:基于廣義塑性鉸線法可準確預判構(gòu)件繞強軸壓彎的極限承載力。
[Abstract]:By using the generalized plastic hinge line method, the limit state of the plate group of H-section steel members under strong axial compression and bending is analyzed, and the ultimate bearing capacity after buckling of the compression flange is solved by using reasonable assumptions. The stress distribution of the critical state section is analyzed, and the influence of the restraint of the peripheral plate and the thickness of the compressed flange on the development plasticity of the buckling flange is studied. The stress distribution in the ultimate state of the member section is analyzed by the equivalent load method considering the buckling of plates. The applicability of the generalized plastic hinge method relative to the traditional plastic hinge method is extended and its application status is analyzed. Analyze and answer the existing problems; The calculated results are compared with the experimental results and the finite element results. The results show that the ultimate bearing capacity of members under strong axial compression can be predicted accurately based on the generalized plastic hinge line method.
【作者單位】： 同濟大學土木工程學院;
【基金】：國家自然科學基金項目(51578403)
【分類號】：TU391
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本文編號：2460566