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    如何預防木廊架的木材開裂?

    來源:http://www.thecysterstory.com 時間:2021-01-21

    濟南木廊架大多運用在條件較為惡劣的戶外,其開裂和變形會受其他多種因素影響,如放置地點、陽光照射、木質因雨淋等自然現象所形成的濕度等易造成變形和開裂.對自然條件我們無法改變,但是在我們可以在施工中加以控制避免。
    Most of the wooden galleries in Jinan are used outdoors in bad conditions, and their cracking and deformation will be affected by many other factors, such as the place of placement, sunlight, humidity caused by natural phenomena such as rain and so on. We can't change the natural conditions, but we can control and avoid them in the construction.
    防腐木在使用過程中會發生表裂、內裂、端裂.表裂主要是由于介質溫度太高、濕度低等原因造成.如要避免應及時調整干燥基準,降低干球溫度,提高濕度,必要時可做表面噴蒸處理.
    Surface crack, inner crack and end crack will occur in the process of using antiseptic wood. Surface crack is mainly caused by high temperature and low humidity of medium. If it is to be avoided, the drying standard should be adjusted in time, the dry bulb temperature should be reduced, and the humidity should be increased. If necessary, surface steaming can be done
    濟南木廊架
    內裂一般發生在干燥的后期階段,是由于木材表面硬化嚴重,內部所受的拉應力大于防腐木材的橫紋抗拉強度時發生的.要防止,應在干燥過程中多進行調濕處理,降低后期溫度,或干燥前將防腐木材進行改性處理.防止端裂在裝堆時,外端的一根隔條外側面一定要和木材的端面在一個平面上,以減少木材端部水分的蒸發面積.
    Internal cracking usually occurs in the later stage of drying, because the wood surface hardening is serious, and the internal tensile stress is greater than the transverse tensile strength of the preservative wood. To prevent it, more moisture control treatment should be carried out in the drying process to reduce the temperature in the later stage, or the preservative wood should be modified before drying, In order to reduce the evaporation area of water at the end of wood, the outer side of a partition strip at the outer end must be in a plane with the end of wood
    在木廊架的施工中,如果可能的話,應該盡可能地使用現有的防腐木尺寸及形狀,對浸漬材所做的任何加工,如鉆孔、精刨、削切等會使浸漬材的使用壽命縮短.建議在施工中用熱鍍鋅及的釘子或螺絲做連接及安裝.在連接時應預先鉆孔,這樣可以避免開裂,膠水則應是防水的.
    In the construction of wooden Gallery, if possible, the existing size and shape of anticorrosive wood should be used as much as possible. Any processing of impregnated material, such as drilling, fine planing and cutting, will shorten the service life of impregnated material. It is suggested that hot-dip galvanized nails or screws should be used for connection and installation in construction. Drilling should be done in advance when connecting, so as to avoid cracking, Glue should be waterproof
    盡量使用二級以上的防腐木,因為其含水率為20%以下,可以有效地防止開裂與變形.若一定要使用含水率大于20%的等級,則在施工現場,木方的疊放應做到每層有10-20MM的縫隙,并在施工前能放置于現場72小時以上,并在此期間防止陽光的直接照射.這樣可以減少木材開裂的可能性.
    Try to use more than grade II anticorrosive wood, because its moisture content is less than 20%, which can effectively prevent cracking and deformation. If the moisture content is more than 20%, then in the construction site, the stacking of wood should be 10-20 mm gap in each layer, and can be placed in the site for more than 72 hours before construction, And during this period to prevent direct sunlight. This can reduce the possibility of wood cracking