顶底角钢半刚接钢框架—轻钢龙骨隔墙体系性能研究

发布时间：2018-06-13 02:18

本文选题：半刚接钢框架 + 轻钢龙骨隔墙　；参考：《哈尔滨工业大学》2017年硕士论文

【摘要】：目前轻钢龙骨隔墙在工程设计中,不考虑其受力性能,仅需要保证防火隔声性能。实际设计过程若考虑隔墙参与结构受力,会节省建筑材料,带来可观的经济效益。本文通过改变龙骨间距和截面尺寸,经试验研究和理论推导,分析结构的刚度、承载力和耗能性能,研究其对半刚接钢框架—轻钢龙骨隔墙体系的受力性能的影响,总结试件的破坏形式和受力方式。具体内容如下:(1)设计9个轻钢龙骨隔墙,进行低周往复加载试验,对试验数据进行处理,通过滞回曲线分析各个试件的刚度、承载力和耗能性能,分析各个试件破坏模式和受力过程;(2)将各组试验结果进行对比,定性分析方钢管间距对结构抗侧性能的影响。结果表明适当减小方钢管间距可以提高结构的刚度和承载力。间距过小,焊接节点增多,焊接残余应力和残余变形增多,导致结构抗侧性能下降。建议工程上合理选择方钢管间距。方钢管截面尺寸增大可以显著提高结构承载力和延性,但对结构的刚度和耗能性能影响不大。增大截面尺寸在设计施工中比较方便,适于应用;(3)本文根据D值法和刚度叠加方法,提出结构刚度简化计算公式,模拟结构骨架曲线,定量研究方钢管间距和截面尺寸对结构抗侧性能的影响。
[Abstract]:At present, in the engineering design of light steel keel partition wall, it is necessary to ensure the fire proof and sound insulation performance without considering its mechanical properties. If the partition wall is taken into account in the actual design process, it will save the building materials and bring about considerable economic benefits. In this paper, the stiffness, bearing capacity and energy dissipation performance of the structure are analyzed by changing the distance between the keels and the cross section, and the effects of the stiffness, bearing capacity and energy dissipation on the mechanical properties of the semi-rigid steel frame-light steel keel partition wall system are analyzed. The failure form and stress mode of the specimen are summarized. The concrete contents are as follows: (1) Design 9 light steel keel partition walls, carry out low cycle reciprocating loading test, process the test data, analyze the stiffness, bearing capacity and energy dissipation performance of each specimen by hysteretic curve. The failure mode and stress process of each specimen are analyzed. (2) the experimental results of each group are compared and the influence of square steel tube spacing on the lateral resistance of the structure is analyzed qualitatively. The results show that the stiffness and bearing capacity of the structure can be improved by reducing the square steel tube spacing properly. When the distance is too small, the welding joints increase, and the residual stress and residual deformation increase, which results in the deterioration of the lateral resistance of the structure. It is suggested that the square steel pipe spacing should be reasonably selected in engineering. The bearing capacity and ductility of the structure can be improved significantly by increasing the section size of square steel tube, but the stiffness and energy dissipation performance of the structure are not affected. It is convenient to increase the section size in design and construction, and is suitable for application in this paper. Based on D-value method and stiffness superposition method, a simplified formula for calculating structural stiffness is proposed, which simulates the skeleton curve of the structure. The influence of square steel tube spacing and section size on the lateral resistance of the structure was studied quantitatively.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU398.9

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