青島北站無(wú)柱雨棚預(yù)應(yīng)力鋼結(jié)構(gòu)關(guān)鍵技術(shù)
焦峰華1，王天榮1，張相勇2，羅斌3
- 摘 要
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（1 中建安裝工程有限公司， 南京 210046； 2 北京市建筑設(shè)計(jì)研究院有限公司，北京 100045； 3 東南大學(xué)土木工程學(xué)院， 南京 210096）［摘要］青島北站無(wú)柱雨棚鋼結(jié)構(gòu)為平面管桁架及預(yù)應(yīng)力結(jié)構(gòu)組成的空間受力體系。在雨棚鋼管柱上布置落地鋼支撐及預(yù)應(yīng)力斜拉索，同時(shí)沿橫向主桁架兩側(cè)在桁架上下弦雙層布置水平鋼拉桿，以增強(qiáng)結(jié)構(gòu)的整體穩(wěn)定性。通過(guò)施工全過(guò)程模擬分析，確定預(yù)應(yīng)力施工順序、鋼拉索和鋼拉桿的無(wú)應(yīng)力制作長(zhǎng)度以及施工張拉力參數(shù)等。對(duì)施工過(guò)程中結(jié)構(gòu)的受力狀態(tài)進(jìn)行跟蹤監(jiān)測(cè)，對(duì)比分析實(shí)測(cè)值和理論值，驗(yàn)證了有限元模擬分析在預(yù)應(yīng)力施工中的正確性。［關(guān)鍵詞］青島北站; 預(yù)應(yīng)力鋼結(jié)構(gòu); 平面管桁架; 鋼拉索; 鋼拉桿; 模擬分析; 施工技術(shù)中圖分類號(hào)：TU394, TU745.2 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)23-0026-04Key technology of prestressed steel structure for nocolumn canopy of Qingdao North Railway StationJiao Fenghua1, Wang Tianrong1, Zhang Xiangyong2, Luo Bin3(1 China Construction Installation Engineering Co., Ltd., Nanjing 210046, China; 2 Beijing Institute of Architectural Design, Beijing 100045, China; 3 School of Civil Engineering, Southeast University, Nanjing 210096, China)Abstract: The steel structure for no-column canopy of Qingdao North Railway Station adopts spatial structural system of planar tube truss and prestressed structure. In order to increase the overall stability, the inclined prestressed cables and steel braces are placed on the steel tube column and steel tension rods are arranged on both layers of the main trusses horizontally. Through the simulation analysis of the whole construction process, the construction sequence was determined as well as the stressless production length of the cable and the steel tension rods, and the constructing parameters such as tensile forces were determined. The stress state of the structure in the construction process was monitored and the comparisons were made between test results and theoretical calculations to verify the validity for the application of finite element simulation analysis in prestressed construction process.Keywords: Qingdao North Railway Station; prestressed steel structure; planar tube truss; steel cable; steel tension rod; simulation analysis; construction technology作者簡(jiǎn)介：焦峰華，項(xiàng)目經(jīng)理，Email：crazy199771@163.com。參考文獻(xiàn)［1］張相勇. 建筑鋼結(jié)構(gòu)設(shè)計(jì)方法與實(shí)例解析［M］. 北京：中國(guó)建筑工業(yè)出版社，2013.［2］王永泉. 大跨度弦支穹頂結(jié)構(gòu)施工關(guān)鍵技術(shù)與試驗(yàn)研究［D］. 南京：東南大學(xué)，2009.［3］劉桐，羅斌，凌慶軍. 預(yù)應(yīng)力斜拉網(wǎng)格結(jié)構(gòu)拉索張拉施工分析［J］.建筑結(jié)構(gòu)，2011，41（10）：54-57.［4］郭正興，羅斌. 大跨空間鋼結(jié)構(gòu)預(yù)應(yīng)力施工技術(shù)研究與應(yīng)用——大跨空間鋼結(jié)構(gòu)預(yù)應(yīng)力施工成套技術(shù)［J］.施工技術(shù)，2011，40（13）：96-102.［5］牛震. 西安北站站臺(tái)雨棚斜拉桿施工技術(shù)［J］.鐵道工程學(xué)報(bào)，2012（7）：71-76.
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