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A platform for research: civil engineering, architecture and urbanism
Construction method for large-section support system of large-span variable-cross-section continuous cast-in-place box girder
The invention relates to a construction method for a large-segment support system of a large-span variable-cross-section continuous cast-in-place box girder . The construction method comprises the steps that (1) construction preparation is conducted; (2) the stiff supporting columns are installed; (3) a supporting steel pipe is mounted; (4) a supporting top beam is arranged; (5) a poured section of the box girder is constructed; (6) a suspension bracket and a pre-pressing water tank are arranged; (7) a post-pouring closure section formwork is installed; and (8) post-pouring closure section concrete is poured. The method has the beneficial effects that the stiff supporting columns are fastened through position control sleeves and column bottom plug blocks, and the supporting column connecting ribs are arranged between the adjacent stiff supporting columns, so that the integrity and the laying efficiency of the stiff supporting columns can be effectively improved; the supporting steel pipe is fastened through pressing plate fastening bolts, so that the integrity of the supporting steel pipe is improved, and the stress performance of the supporting steel pipe is improved; the stress of first profile steel and second profile steel can be tested through the stress sensor, so that the difficulty of controlling the relative position of the poured section of the box girder can be effectively reduced; and the installation difficulty of the box girder formwork is reduced, and the positioning problem of the box girder reinforcement cage is solved.
本发明涉及一种大跨变截面连续现浇箱梁大节段支架体系施工方法，包括步骤：1)施工准备；2)安装劲性撑柱；3)安装支撑钢管；4)设置支撑顶梁；5)施工箱梁已浇段；6)设置悬吊撑架和预压水箱；7)安装后浇合拢段模板；8)浇筑后浇合拢段混凝土。本发明的有益效果是：通过控位套筒及柱底塞块紧固劲性撑柱，在相邻的劲性撑柱之间设置撑柱连接筋，可有效提升劲性撑柱的整体性和布设效率；通过压板紧固栓紧固支撑钢管，提升了支撑钢管的整体性，改善了支撑钢管的受力性能；可通过应力传感器测试第一型钢和第二型钢的受力，可有效降低箱梁已浇段相对位置控制的难度；降低了箱梁模板安装的难度，解决了箱梁钢筋笼定位的问题。
Construction method for large-section support system of large-span variable-cross-section continuous cast-in-place box girder
The invention relates to a construction method for a large-segment support system of a large-span variable-cross-section continuous cast-in-place box girder . The construction method comprises the steps that (1) construction preparation is conducted; (2) the stiff supporting columns are installed; (3) a supporting steel pipe is mounted; (4) a supporting top beam is arranged; (5) a poured section of the box girder is constructed; (6) a suspension bracket and a pre-pressing water tank are arranged; (7) a post-pouring closure section formwork is installed; and (8) post-pouring closure section concrete is poured. The method has the beneficial effects that the stiff supporting columns are fastened through position control sleeves and column bottom plug blocks, and the supporting column connecting ribs are arranged between the adjacent stiff supporting columns, so that the integrity and the laying efficiency of the stiff supporting columns can be effectively improved; the supporting steel pipe is fastened through pressing plate fastening bolts, so that the integrity of the supporting steel pipe is improved, and the stress performance of the supporting steel pipe is improved; the stress of first profile steel and second profile steel can be tested through the stress sensor, so that the difficulty of controlling the relative position of the poured section of the box girder can be effectively reduced; and the installation difficulty of the box girder formwork is reduced, and the positioning problem of the box girder reinforcement cage is solved.
本发明涉及一种大跨变截面连续现浇箱梁大节段支架体系施工方法，包括步骤：1)施工准备；2)安装劲性撑柱；3)安装支撑钢管；4)设置支撑顶梁；5)施工箱梁已浇段；6)设置悬吊撑架和预压水箱；7)安装后浇合拢段模板；8)浇筑后浇合拢段混凝土。本发明的有益效果是：通过控位套筒及柱底塞块紧固劲性撑柱，在相邻的劲性撑柱之间设置撑柱连接筋，可有效提升劲性撑柱的整体性和布设效率；通过压板紧固栓紧固支撑钢管，提升了支撑钢管的整体性，改善了支撑钢管的受力性能；可通过应力传感器测试第一型钢和第二型钢的受力，可有效降低箱梁已浇段相对位置控制的难度；降低了箱梁模板安装的难度，解决了箱梁钢筋笼定位的问题。
Construction method for large-section support system of large-span variable-cross-section continuous cast-in-place box girder
大跨变截面连续现浇箱梁大节段支架体系施工方法
SI ZHIJIE (author) / YE SHEN (author) / FANG WEICHUN (author) / DONG YA (author) / ZHOU HAIBO (author) / ZHAO XI (author) / JIANG XINCHUN (author) / LU JIANG (author) / ZHANG JUN (author)
2021-07-27
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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