A Method for Wind-Driven Rainwater Infiltration Climate Risk Assessment Based on Building Thermal Design Zoning
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摘要: 风驱雨是导致外墙渗水的主要外部因素,而我国各地区风驱雨气候条件存在显著差异。研究提出了一种结合建筑热工设计分区的风驱雨渗水气候风险评价方法和指标。通过该指标对现有建筑热工设计分区的主要城镇的风驱雨渗水风险等级进行评价并绘制了全国风驱雨渗水风险气候区划。结果表明:严寒地区和寒冷地区以低风险为主,占比分别为80.2%和95.3%,且均未出现高风险城镇;夏热冬冷、夏热冬暖和温和地区中风险占比最高,分别为68.2%、66.7%和59.1%,其中夏热冬暖地区尤为显著,高风险占比高达25%。这一发现强调了即使在热工设计标准一致的情况下,不同地区的建筑防水设计要求的差异也应得到充分考虑。Abstract: Wind-driven rain is the main external factor causing rainwater infiltration in exterior walls,and there are significant differences in wind-driven rain climate conditions in various regions of China. This study proposes a method for assessing wind-driven rainwater infiltration climate risk that integrates building thermal design zoning,along with a set of corresponding indicators. The risk level of wind-driven rainwater infiltration in the main towns of existing building thermal design zoning was evaluated using these indicators,and a climate zone map for wind-driven rainwater infiltration risk in China was developed. The results show that the severe cold and cold regions are predominantly low-risk,accounting for 80. 2% and 95. 3%,respectively,with no highrisk towns observed in either region. In contrast,the hot summer and cold winter,hot summer and warm winter,and mild regions exhibit the highest proportions of medium-risk areas,at 68. 2%, 66. 7%,and 59. 1%,respectively. Among these,the hot summer and warm winter region is particularly significant,with a high-risk proportion reaching 25%. These findings emphasize that even if thermal design standards are consistent,differences in waterproofing design requirements for buildings in different regions should also be fully considered.
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Key words:
- wind-driven rain /
- climatic zoning /
- building waterproofing /
- building thermal design /
- infiltration
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