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                                                                                                                                                                                                                                                            木結構上海滴水湖餐廳木屋

                                                                                                                                                                                                                                                            更新時間:2021-01-18 10:07:29點擊次數:
                                                                                                                                                                                                                                                            項目名稱:上海滴水湖餐廳項目地點:上海市滴水湖建設時間:2020 9項目參數:花旗松雙曲面膠合木框架,建筑面積260平米項目實景圖:
                                                                                                                                                                                                                                                            項目名稱:上海滴水湖餐廳

                                                                                                                                                                                                                                                            項目地點:上海市滴水湖
                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                            建設時間:2020.9
                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                            項目參數:花旗松雙曲面膠合木框架,建筑面積260平米
                                                                                                                                                                                                                                                            木結構是以木材為主制作的結構,但由于受自然條件的限制,木材相當缺乏,僅在山區、林區和農村有一定的采用。
                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                            用木材制成的結構。木材是一種取材容易,加工簡便的結構材料。木結構自重較輕,木構件便于運輸、裝拆,能多次使用,故廣泛地用于房屋建筑中,也還用于橋梁和塔架。近代膠合木結構的出現,更擴大了木結構的應用范圍。
                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                            木材受拉和受剪皆是脆性破壞,其強度受木節、斜紋及裂縫等天然缺陷的影響很大;但在受壓和受彎時具有一定的塑性。木材處于潮濕狀態時,將受木腐菌侵蝕而腐朽;在空氣溫度、濕度較高的地區,白蟻、蛀蟲、家天牛等對木材危害頗大。木材能著火燃燒,但有一定的耐火性能。因此木結構應采取防腐、防蟲、防火措施,保證其耐久性。
                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                            木結構按連接方式和截面形狀分為齒連接的原木或方木結構,裂環、齒板或釘連接的板材結構和膠合木結構。
                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                            齒連接的原木或方木結構
                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                            以手工操作為主的工地制造的結構。加工簡便,發展早,應用也廣。在中國應用多的也是這種結構形式。
                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                            原木或帶髓心的方木在干燥過程中,多發生順紋開裂。當裂縫與桁架受拉下弦連接處受剪面重合時,將降低木結構的安全度,甚至導致破壞。故在采用原木或方木結構時,應采取可靠措施,盡量減少裂縫對結構的不利影響。
                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                            原木和方木截面較大,干燥費時,所以制作時只能采用截面內外平均含水率不大于25%的半干材。半干材在安裝后逐漸干燥到與空氣中的相對濕度平衡時,將產生橫紋干縮,并在節點處產生的橫紋或斜紋承壓變形偏大,再由于齒連接手工操作的偏差,致使原木或方木結構的變形較大。
                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                            原木或方木桁架的下弦除了開裂的影響之外,還常因所供應的木材質量偏低,難以選得符合受拉構件材質標準的木材。為了保證原木或方木結構的安全可靠,在中國大量推廣應用鋼材作下弦和拉桿的鋼木桁架。以保證結構的安全可靠,并在一定程度上提高了結構的剛度,減小了變形。

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