The purpose of this paper is to judge whether the wall is condensed according to the increment of moisture content of the insulation material,and to propose a reasonable design scheme of the wall insulation structure,to realize the building energy conservation.Based on the wall construction,environmental parameters and material parameters the temperature field and moisture field of the wall were calculated.partial pressure distribution curve of water vapor and saturated water vapor for wall was drawn out.The theoretical calculation results show that the wall is internally condensed,but the weight humidity increment in the heating period is △ω =1.000％ ＜ 15 ％,which proves that the design of the wall complies with the requirements of GB 50176-2016.On the basis of the calculation results,some suggestions for the possible structural damage were put forward.After the addition of the gas barrier layer,it was calculated that the structure did not condense after the modification.The structure calculation method can provide the design basis for the thermal insulation structure design,and also can be applied to the actual engineering.For example,structure data simulation and technical transformation for the existing building wall insulation.%目的 确定保温材料重量湿度增量,判断墙体是否发生冷凝,提出合理的墙体保温构造设计方案,实现建筑节能.方法 根据墙体构造,环境参数和材料参数计算墙体的温度场和湿度场,绘制出墙体水蒸气分压力和饱和水蒸气分压力分布线.结果 理论计算为墙体内部发生冷凝,但采暖期重量湿度增量△ω=1.000％＜15％.证明墙体的设计符合《民用建筑热工规范》(GB 50176-2016)要求.在计算结果的基础上,对可能发生的结构破坏提出了墙体结构的改造建议,墙体加入了隔气层后,经计算知改造后的结构未发生冷凝.结论 结构计算方法能够为保温结构设计提供设计依据,也可以应用到实际工程,能对既有建筑的墙体保温构造进行数据模拟及技术改造.
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