【摘要】 为更好地符合发展绿色建筑的要求,提出将轻钢与发泡混凝土组合墙体应用于温室大棚结构中。轻钢-发泡混凝土组合墙体具有轻质高强、延性好、施工周期短和工业化程度高的优点,可以有效维持温室大棚温度,加快施工进度。结合山东省潍坊寿光市某温室蔬菜大棚项目,利用ABAQUS软件,建立轻钢与发泡混凝土组合墙体有限元模型,对不同参数的组合墙体进行非线性分析,考察在轴向荷载作用下墙体厚度、立柱间距及发泡混凝土密度对轻钢与发泡混凝土组合墙体力学性能的影响。有限元分析表明:由于发泡混凝土对轻钢立柱的约束作用,轻钢与发泡混凝土组合墙体具有较好的轴向抗压能力。此外,墙体的轴压承载力随着发泡混凝土密度和墙厚的增加,都有一定程度的提高。而轻钢立柱的间距越小,墙体的承载能力和变形能力都随之越大。基于以上分析的基础,提出了适用于该新型组合墙体轴心受压承载力的计算式。更多还原

【Abstract】 In order to better meet the requirements of developing green buildings,it is proposed to apply the light steel and foamed concrete composite wall to the greenhouse structure.Light steel foam concrete composite wall,which possesses a great many of positive features such as light weight,high strength,good ductility,short construction period and high industrialization degree.It can effectively maintain the temperature of greenhouse and accelerate the construction progress.Combined with a greenhouse vegetable greenhouse project in Shouguang City,Weifang,Shandong Province,considering the effect of studs spacing,foam concrete density and wall thickness on the mechanical properties of lightweight steel-foam concrete composite walls under axial compression,nonlinear finite element modeling of wall with diverse parameters is performed,following some methodologies to model lightweight steel-foam concrete composite walls by using ABAQUS.The finite element analysis shows that the lightweight steel-foam concrete composite walls have better axial compressive capacity due to the constraint effect of foamed concrete on studs.In addition,the increase of both thickness of wall and density of foam concrete can usefully improve the wall′ s axial carrying capacity.In addition,as the reduction of studs spacing,the wall′ s capacities of deformation and vertical bearing are enhanced.On the basis of the analysis,the calculation formula of axial compressive bearing capacity of the new composite wall is proposed.更多还原