XPS板外墙外保温系统温度效应的数值模拟

发布时间：2018-01-04 02:16

本文关键词：XPS板外墙外保温系统温度效应的数值模拟　出处：《沈阳工业大学学报》2014年06期 　论文类型：期刊论文

【摘要】：为研究XPS板保温材料在不同季节温度应力的变化情况,在典型外保温墙体温度场计算的基础上,采用傅里叶(Fourier)方程及能量守恒定律建立理论模型,选取XPS板外墙外保温系统三个施工方案进行数值模拟:方案1为30 mm胶粉聚苯颗粒贴砌XPS板;方案2为10 mm胶粉聚苯颗粒贴砌XPS板;方案3为外墙薄抹灰.对外墙外保温系统墙体各层材料的力学行为进行分析,结果表明:夏季墙体整体受到压应力,涂料饰面层一天中应力变化范围为-0.34~-0.02 MPa,易产生膨胀离鼓现象;冬季墙体整体为拉应力,变化范围大概为0.12~0.26 MPa,开裂的风险比较大;方案1温度梯度最小,保温效果最好,优于方案2和方案3.
[Abstract]:To study the changes of XPS insulation materials under different stress temperature, thermal insulation in the typical outer wall temperature field based on the calculation, by Fu Liye (Fourier) equation and the energy conservation law to establish a theoretical model, numerical simulation system of the three construction scheme selection of XPS exterior insulation: scheme 1 is 30 mm polystyrene particle pasting XPS board; scheme 2 is 10 mm adhesive polystyrene attached to XPS board; scheme 3 as the wall plastering. Analyze the mechanical behavior of external wall insulation system of wall material in each layer the results show that the whole summer wall under compressive stress, coating day stress range -0.34~-0.02 MPa, easy to produce expansion from the drum wall as a whole winter phenomenon; the tensile stress range is about 0.12~0.26 MPa, the risk of cracking is relatively large; 1 minimum temperature gradient, heat preservation effect is best, better than scheme 2 and 3.

【作者单位】：沈阳工业大学建筑工程学院;东北金城建设股份有限公司;
【基金】：国家自然科学基金资助项目(111021181) 辽宁省“百千万”人才基金资助项目(2011921048)
【分类号】：TU761.12
【正文快照】： 建筑保温方案的设计直接影响到生产生活,合理的保温材料可以减少CO2的排放量.EkinsPaul[1]等研究了影响建筑能耗的各种因素;Her-ring Horace[2]提出以前没有考虑节能因素或者节能效果不太理想的建筑,可以通过新建和整修增加保温系统达到节能的目的.我国目前的建筑保温节能设计

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