【作者】 张蕾春；

【导师】 赵滇生；

【作者基本信息】 浙江工业大学 ， 结构工程， 2009， 硕士

【摘要】 型钢混凝土结构中,型钢与混凝土的协同工作能力,型钢的配钢形式、配钢率,混凝土强度等级及荷载形式是影响型钢混凝土结构承载力的关键。本文利用ANSYS有限元分析软件,对桁架式不等肢L形截面的型钢混凝土异形柱进行研究,将ANSYS有限元分析结果与试验结果进行对比,验证了不等肢L形截面的桁架式型钢混凝土异形柱中型钢与混凝土的协同工作能力。在此基础上,运用ANSYS有限元模型,分析混凝土强度等级、偏心距、加载角、配钢率及配钢形式等对桁架式不等肢L形截面的型钢混凝土异形柱极限承载力的影响,从中找出各类影响因素对桁架式不等肢L形截面的型钢混凝土异形柱极限承载力的影响规律,并得出合理配钢形式与最佳配钢率。最后,将桁架式不等肢L形截面的型钢混凝土异形柱与不等肢L形截面的钢筋混凝土异形柱的极限承载力进行比较,发现在异形柱中配置型钢能使其极限承载力有较大提高,并且在大偏心情况下,异形柱极限承载力的提高更明显。更多还原

【Abstract】 In steel reinforced concrete structure, the synergistic effect of shaped-steel and concrete, shaped-steel layout and ratio, concrete strength grade and loading form are the keys to influence ultimate bearing capacity.Unsymmetrical L-cross section trussed special-shaped steel reinforced concrete column is analyzed by ANSYS. The results of numerical simulation and examination are compared to validate the synergistic effect of shaped-steel and concrete. Based numerical simulation, using finite element model, influence of concrete strength grade, loading eccentricity, loading angle, shaped-steel layout and ratio on ultimate bearing capacity is analyzed in order to find out discipline of ultimate bearing capacity, rational shaped-steel layout and ratio. Finally, the ultimate bearing capacity of special-shaped steel reinforced concrete column and special-shaped reinforced concrete column is compared. Analyzed the comparison, shaped-steel configuration can improve he ultimate bearing capacity, especially in large eccentricity condition.更多还原