Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Closure construction method for continuous rigid frame beam of lower dragging extra-large bridge
The invention discloses a closure construction method for continuous rigid frame beams of a drop-down extra-large bridge, which comprises the following steps of: constructing approach bridge continuous plate beams and junction pier capping beams on two sides of a main bridge in advance before the construction of the main bridge, and reserving tensioning operation holes on the capping beams and theapproach bridge continuous plate beams of junction piers; pouring 0 # beam section concrete at the top of the main pier, synchronously and symmetrically moving forwards for T-shaped symmetrical circulation on the two sides of the 0 # beam section concrete, and pouring subsequent cantilever beam sections until the mid-span and the side span are reached; mid-span closure is conducted on the mid-span pouring mid-span closure section; pouring a side span suspended pouring section and a side span cast-in-place section on the side span imbalance; pouring a side span closure section at the side spancast-in-place section to perform side span and approach bridge continuous plate girder closure, performing tensioning anchor sealing through a reserved tensioning operation hole, and performing secondary plugging on the tensioning operation hole after tensioning anchor sealing is completed; the method has the beneficial effects that the main bridge construction efficiency is effectively improved,and the side span closing efficiency is effectively improved.
本发明公开了一种下拖特大桥连续刚构梁合龙施工方法，在主桥施工前预先施工主桥两侧的引桥连续板梁和交界墩盖梁，并在交界墩的盖梁及引桥连续板梁上预留张拉操作孔；在主桥墩顶部进行0#号梁段砼浇筑并在0#号梁段砼的两侧同步对称前移T对称循环浇筑后续悬臂梁段直至中跨和边跨；在中跨浇筑中跨合拢段进行中跨合拢；在边跨不平衡浇筑边跨悬浇段及边跨现浇段；在边跨现浇段浇筑边跨合拢段进行边跨与引桥连续板梁合拢，并通过预留的张拉操作孔进行张拉封锚，张拉封锚完成后二次封堵张拉操作孔；本发明具有有效提高主桥施工效率、有效提高边跨合拢效率的有益效果。
Closure construction method for continuous rigid frame beam of lower dragging extra-large bridge
The invention discloses a closure construction method for continuous rigid frame beams of a drop-down extra-large bridge, which comprises the following steps of: constructing approach bridge continuous plate beams and junction pier capping beams on two sides of a main bridge in advance before the construction of the main bridge, and reserving tensioning operation holes on the capping beams and theapproach bridge continuous plate beams of junction piers; pouring 0 # beam section concrete at the top of the main pier, synchronously and symmetrically moving forwards for T-shaped symmetrical circulation on the two sides of the 0 # beam section concrete, and pouring subsequent cantilever beam sections until the mid-span and the side span are reached; mid-span closure is conducted on the mid-span pouring mid-span closure section; pouring a side span suspended pouring section and a side span cast-in-place section on the side span imbalance; pouring a side span closure section at the side spancast-in-place section to perform side span and approach bridge continuous plate girder closure, performing tensioning anchor sealing through a reserved tensioning operation hole, and performing secondary plugging on the tensioning operation hole after tensioning anchor sealing is completed; the method has the beneficial effects that the main bridge construction efficiency is effectively improved,and the side span closing efficiency is effectively improved.
本发明公开了一种下拖特大桥连续刚构梁合龙施工方法，在主桥施工前预先施工主桥两侧的引桥连续板梁和交界墩盖梁，并在交界墩的盖梁及引桥连续板梁上预留张拉操作孔；在主桥墩顶部进行0#号梁段砼浇筑并在0#号梁段砼的两侧同步对称前移T对称循环浇筑后续悬臂梁段直至中跨和边跨；在中跨浇筑中跨合拢段进行中跨合拢；在边跨不平衡浇筑边跨悬浇段及边跨现浇段；在边跨现浇段浇筑边跨合拢段进行边跨与引桥连续板梁合拢，并通过预留的张拉操作孔进行张拉封锚，张拉封锚完成后二次封堵张拉操作孔；本发明具有有效提高主桥施工效率、有效提高边跨合拢效率的有益效果。
Closure construction method for continuous rigid frame beam of lower dragging extra-large bridge
一种下拖特大桥连续刚构梁合龙施工方法
TANG ZHENYA (Autor:in) / XU SHAOPING (Autor:in) / MA TIANCHANG (Autor:in) / CHANG YANHUA (Autor:in) / SU CHUNSHENG (Autor:in) / HAO YUFENG (Autor:in) / MENG FANWEI (Autor:in) / GUO WANHUI (Autor:in) / GUO JIANQIANG (Autor:in) / JIANG XINHE (Autor:in)
16.06.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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