摘要
为研究保温锚栓对外保温单面叠合剪力墙热工性能的影响,利用有限元软件ABAQUS,分别对无保温锚栓、采用不锈钢保温锚栓、采用纤维增强复合材料(fiber reinforced polymer,简称FRP)保温锚栓和采用钢-纤维复合保温锚栓的外保温单面叠合剪力墙的热工性能进行了对比分析。结果表明:与无保温锚栓的墙体相比,采用不锈钢保温锚栓、FRP保温锚栓和钢-纤维复合保温锚栓的墙体的平均传热系数分别提高了15.9%、0.4%和8.6%;随着保温锚栓排布间距的减小以及保温锚栓直径的增大,墙体的平均传热系数和热桥影响区域占比均呈现增大的趋势,上述现象将导致墙体的保温性能降低;对于传热系数较大的不锈钢保温锚栓,外裹FRP可以减少热量传递,有效降低热桥效应。
In order to study the influence of insulation anchors on the thermal performance of external insulation single-sided superimposed shear walls,the finite element software ABAQUS was used to compare and analyze the thermal performance of external insulation single-sided superimposed shear walls without insulation anchors,with stainless steel insulation anchors,with FRP insulation anchors and with steel-fiber composite insulation anchors.The results show that the average heat transfer coefficients of walls with stainless steel insulation anchors,FRP insulation anchors and steel-fiber composite insulation anchors are 15.9%,0.4%and 8.6%higher than those of walls without insulation anchors,respectively.The average heat transfer coefficient and the proportion of thermal bridge influence area increase with the decrease of insulation anchor spacing and the increase of insulation anchor diameter,which leads to the decrease of insulation performance.For stainless steel insulation anchors with large heat transfer coefficient,FRP can reduce heat transfer and effectively reduce thermal bridge effect.
作者
苏宇
程蓓
蒋航军
SU Yu;CHENG Bei;JIANG Hangjun(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;China Institute of Building Standard Design and Research,Beijing 100048,China)
出处
《四川建筑科学研究》
2024年第3期100-108,共9页
Sichuan Building Science
关键词
外保温单面叠合剪力墙
有限元分析
保温锚栓
热工性能
热桥效应
external insulation single-sided superimposed shear wall
finite element analysis
insulation anchor
thermal performance
thermal bridge effect
