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    發布時間:2021-03-25 15:59:44

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    網架鋼結構公司對不同工程的結構選型:

    網架結構的類型較多,具體選擇哪種類型時,要綜合考慮許多因素。選型應堅持以下原則:安全可靠、技術先進、經濟合理、美觀適用。

    平面形狀為矩形的周邊支承或三邊支承一邊開口的網架,當其邊長比(即長邊與短邊之比)小于或等于1.5時,宜選用正放四角錐網架、斜放四角錐網架、棋盤形四角錐網架、正放抽空四角錐網架、兩向正交斜放網架、兩向正交正放網架。當其邊長比大于1.5時,宜選用兩向正交正放網架、正放四角錐網架或正放抽空四角錐網架。平面形狀為矩形、多點支承的網架可根據具體情況選用正放四角錐網架、正放抽空四角錐網架、兩向正交正放網架。平面形狀為圓形、正六邊形等周邊支承的網架,可根據具體情況選用三向網架、三角錐網架或抽空三角錐網架。對中小跨度,也可選用蜂窩形三角錐網架。

    網架的網格高度與網格尺寸應根據跨度大小、荷載條件、柱網尺寸、支承情況、網格形式以及構造要求和建筑功能等因素確定,網架的高跨比可取1/18~1/10。網架的短向跨度的網格數不宜小于5。確定網格尺寸時宜使相鄰桿件的夾角小于45°,且不宜小于30°。

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