Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for suspended pouring superstructure of main bridge
The invention relates to a main bridge cantilever cast-in-place superstructure construction method, the main bridge superstructure adopts a PC continuous box girder system and a single-box single-chamber box section, and the method comprises 0 # girder section construction, cantilever beam section construction, side span cast-in-place section construction, side span closure section construction and mid-span closure section construction. In the construction of the side span closure section and the middle span closure section, after closure locking, concrete is poured at the lowest temperature time of the day, the concrete is densely filled, when the temperature rises in the daytime, the concrete of the closure section is pressed, the concrete compression performance is the best, damage caused by pressure is not worried, and the situation that after concrete is poured, when the temperature is the lowest in one day, the concrete cannot be damaged is effectively avoided. Bridge shrinkage causes concrete tension of a closure section, and construction cracks are generated. The construction method of the main bridge suspended pouring superstructure is reasonable in design, the construction process of the PC continuous box girder system can be rapidly completed with high quality, and the construction process is safe and reliable.
本发明涉及一种主桥悬浇上部结构施工方法，所述主桥上部结构采用PC连续箱梁体系，单箱单室箱形断面，所述方法包括0#梁段施工，悬臂梁段施工，边跨现浇段施工，边跨合拢段施工，中跨合拢段施工。边跨合拢段及中跨合拢段施工中，在合拢锁定后，均选择当天最低温度时间浇注混凝土，混凝土填充密实，在白天温度升高时，合拢段混凝土受压，混凝土受压性能是最好的，不担心压力造成损坏，且有效避免浇筑混凝土后，在一天温度最低时，桥梁收缩导致合拢段混凝土受拉，产生施工裂缝。所述主桥悬浇上部结构施工方法设计合理，能快速且高质量完成PC连续箱梁体系施工过程，施工过程安全可靠。
Construction method for suspended pouring superstructure of main bridge
The invention relates to a main bridge cantilever cast-in-place superstructure construction method, the main bridge superstructure adopts a PC continuous box girder system and a single-box single-chamber box section, and the method comprises 0 # girder section construction, cantilever beam section construction, side span cast-in-place section construction, side span closure section construction and mid-span closure section construction. In the construction of the side span closure section and the middle span closure section, after closure locking, concrete is poured at the lowest temperature time of the day, the concrete is densely filled, when the temperature rises in the daytime, the concrete of the closure section is pressed, the concrete compression performance is the best, damage caused by pressure is not worried, and the situation that after concrete is poured, when the temperature is the lowest in one day, the concrete cannot be damaged is effectively avoided. Bridge shrinkage causes concrete tension of a closure section, and construction cracks are generated. The construction method of the main bridge suspended pouring superstructure is reasonable in design, the construction process of the PC continuous box girder system can be rapidly completed with high quality, and the construction process is safe and reliable.
本发明涉及一种主桥悬浇上部结构施工方法，所述主桥上部结构采用PC连续箱梁体系，单箱单室箱形断面，所述方法包括0#梁段施工，悬臂梁段施工，边跨现浇段施工，边跨合拢段施工，中跨合拢段施工。边跨合拢段及中跨合拢段施工中，在合拢锁定后，均选择当天最低温度时间浇注混凝土，混凝土填充密实，在白天温度升高时，合拢段混凝土受压，混凝土受压性能是最好的，不担心压力造成损坏，且有效避免浇筑混凝土后，在一天温度最低时，桥梁收缩导致合拢段混凝土受拉，产生施工裂缝。所述主桥悬浇上部结构施工方法设计合理，能快速且高质量完成PC连续箱梁体系施工过程，施工过程安全可靠。
Construction method for suspended pouring superstructure of main bridge
一种主桥悬浇上部结构施工方法
CHEN XIAOLI (Autor:in) / QIU WANQIN (Autor:in) / YANG ZONGSHANG (Autor:in) / YANG XIN (Autor:in) / CHEN MINGHUI (Autor:in) / HE WEIQIANG (Autor:in) / LIN HAODONG (Autor:in) / LI YONG (Autor:in) / LI XUAN (Autor:in)
02.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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