作　　者： ; ; ;

机构地区： 华南理工大学材料科学与工程学院

出　　处： 《建筑材料学报》 2013年第6期1012-1016,共5页

摘　　要： 针对中国夏热冬暖地区居住建筑节能的要求,选定适合的结构层和保温层材料以及平行板式的复合结构,利用有限元分析法,对以陶粒混凝土为结构层、泡沫混凝土为保温层,无拉接件的保温夹芯复合墙体进行了模拟研究,提出承重保温夹芯复合墙体在竖向荷载和风荷载作用下各种应力分布的基本规律为:竖向荷载下复合墙体的压力主要由结构层承担,压应力呈现出沿板宽度的两端较大而中间部位较小的马鞍形分布,且底部两端的压应力较大;在竖向10MPa荷载作用下结构层压应力的理论计算值为15MPa,保温层的抗压强度大于0.21MPa;在风荷载作用下,结构层与保温层间的界面切应力随墙体高度变化均呈双峰型分布,底部及顶部均为0,中间部位接近0,在它们之间出现峰值,界面切应力最大值为3.89kN/m2,界面正应力最大值为1.39kN/m2. Aiming at the energy-saving requirement for residential architecture in hot summer and warm winter area, a suitable wall material and structure with loading structural layer and thermal insulation lay- er without connecting pieces has been selected. By the finite element analysis, a simulate research for this kind of sandwich-type composite structural wall with ceramsite concrete as structural layer and foam con- crete as thermal insulation layer has been made. General rules of stress distribution in this wall under cer- tain vertical loads and wind loads were presented. Under vertical loading, the compressive stress may be considered to bear completely by structural layer, with saddle-shaped distribution as bigger stress in the two ends of plate wide and smaller in the middle. The theoretical value of structural layer compressive stress under 10 MPa loading is about 15 MPa, the compressive strength of the thermal insulation layer should be more than 0.21 MPa. Under wind loading, the interface shear stress between structural layer and insulation layer appears to be two-peak distribution along with the wall height with zero value at the top and bottom section, near zero in the middle plate and peak value between them. The biggest interface shear and normal stress are 3.89 kN/m2 and 1.39 kN/m2 respectively.

关 键 词： 隔热 承重墙 夹芯复合墙体 模拟研究

领　　域： [建筑科学] [建筑科学]