雙層鋼桁梁三矮塔斜拉橋拼裝工藝設(shè)計(jì)

打開文本圖片集

摘  要：在已有的鋼桁梁拼裝施工技術(shù)中，從分段劃分、組裝、工裝、拼裝順序、焊接變形控制及檢測等方面進(jìn)行研究?？偨Y(jié)“單元件制造+單元件地面拼裝為大節(jié)段+大節(jié)段總裝+節(jié)點(diǎn)自適應(yīng)頂推+分階段檢測驗(yàn)收”工藝在贛州蟠龍大橋項(xiàng)目的成功應(yīng)用。

關(guān)鍵詞：雙層鋼桁梁;預(yù)調(diào);焊接變形;鋼結(jié)構(gòu)檢測;拼裝工藝

中圖分類號(hào)：TU758.11     文獻(xiàn)標(biāo)志碼：A         文章編號(hào)：2095-2945（2023）18-0112-05

Abstract： In the existing construction technology of steel truss girder assembly， through studies from the aspects of segment division， assembly， tooling， assembly sequence， welding deformation control and inspection， the technology of "single element manufacturing + single element ground assembly for large segment + large segment general assembly + node adaptive push + stage inspection and acceptance" is summarized， which has been successfully applied in the project of Panlong Bridge in Ganzhou.

Keywords： double-layer steel truss girder; preset; welding deformation; steel structure inspection; assembly process

鋼桁梁施工工藝有“地面拼裝、整體提升、高空滑移”“鋼桁梁大節(jié)段水運(yùn)、懸臂拼裝”[1-2]“鋼桁梁大節(jié)段水運(yùn)、浮吊整體吊裝法”[3]“地面拼裝、轉(zhuǎn)體法”[4]“場內(nèi)分段制作+現(xiàn)場整體拼裝+浮托頂推滑移”[5]5種施工方式，總結(jié)起來分為2類：工廠單元件制作+橋位總裝+架設(shè)工藝;工廠大節(jié)段制作+架設(shè)工藝。（剩余5217字）