Abstract：The airtightness of the exterior wall is the difficulty in the design of a fabricated passive house. This paper analyzes the airtightness design of three structural types of prefabricated walls through three typical cases. From the four aspects of airtight layer position, airtight layer material, prefabricated wall panel design and weak node structural design, it summarizes the key points and design methods of airtightness design. It then concludes that the airtight layer is generally located on the indoor side of the outer wall of the heating room, where appropriate airtight layer material should be selected according to the wall panel frame material, and the integration with the original structural level of the wall panel should be considered. The design of fabricated passive house wall panels should consider the degree of assembly and the size of the wall panel according to the type of wall panel structure to reduce the difficulty of sealing the wall panel splicing joints. The weak node sealing material should match the airtight layer material, and the sealing structure should consider durability and crack resistance. The paper can provide guidance and reference for the airtightness design of prefabricated passive house.
杨倩苗，孙志中，邹苒*，孔黎遥. 装配式被动房气密性设计研究[J]. 新建筑, 2021, 39(4): 118-123.
YANG Qianmiao,SUN Zhizhong,ZOU Ran,KONG Liyao. Research on Airtightness Design of Prefabricated Passive House. New Architecture, 2021, 39(4): 118-123.
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