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北京冬春大风,砂尘弥漫,虽门窗紧闭,但风砂仍渗透入室内,其原因在于门窗不够密闭。由于施工误差,门窗扇开启缝往往大达3～5毫米;扇料的变形,更进一步加大缝隙;窗扇玻璃腻子干燥脱落,又使安装缝成为渗透通路;至于木框安装不严,框料四周与砖墙间缝隙也产生渗透。因此,木门窗的密闭就成为设计中的课题。 设计密闭木门窗,须研究减少木门窗渗透的途径。根据有关文献,渗透量随缝隙宽
In winter and spring in Beijing, the wind is filled with sand and dust. Although the doors and windows are closed, wind and sand still penetrate into the room. The reason is that the doors and windows are not closed enough. Due to construction errors, the opening and closing seams of doors and windows are often as large as 3 to 5 mm; the deformation of the fan material further increases the gap; the glazing putty of the window sash is dry and fall off, and the installation joint becomes a permeation path; as for the wooden frame installation, the frame material is not strict There is also penetration between the perimeter and the brick wall. Therefore, the sealing of wooden doors and windows has become a topic in design. Designing closed wooden doors and windows requires studying ways to reduce the penetration of wooden doors and windows. According to the relevant literature, the permeation amount varies with the gap