Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Semi-fixed restraining device for lengthening rigid frame bridge pier and construction method
The invention discloses a semi-fixed restraining device for lengthening a rigid frame bridge pier and a construction method.The semi-fixed restraining device comprises a lower bridge pier and an upper bridge pier, a lower fixing device is arranged at the upper end of the lower bridge pier, an upper sliding device is arranged at the lower end of the upper bridge pier, and the upper sliding device and the lower fixing device are assembled and can be adjusted in a sliding mode; an extension adjusting space is further formed between the upper sliding device and the lower fixing device; the construction method comprises the following steps: constructing the bridge pier; the pier main reinforcement between the lower fixing device and the upper sliding device is cut off, and concrete between the lower fixing device and the upper sliding device is chiseled away; a jack is installed, and jacking operation is conducted; mounting a built-in steel plate; pouring concrete to seal an inner cavity gap of the cover plate, and dismounting the jack; the bridge pier main reinforcements, the binding stirrups and the tie bars are connected between the lower fixing device and the upper sliding device in an equal-strength mode; and pouring and jacking post-pouring pier body concrete. The method can meet the transformation goals of safety, environmental protection, rapidness, high efficiency, low traffic influence and the like in the structure lifting transformation process.
本发明公开了一种用以刚构桥墩接长的半固定约束装置及施工方法，其半固定约束装置包括下部桥墩、上部桥墩，下部桥墩上端设置有下固定装置，上部桥墩下端设置有上滑动装置，上滑动装置与下固定装置相装配，且能进行滑动调节，上滑动装置、下固定装置之间还形成接长调节空间；其施工方法，包括以下步骤：施工桥墩；切断下固定装置、上滑动装置之间的桥墩主筋，并凿除二者之间的混凝土；安装千斤顶，顶升作业；安装嵌固钢板；浇筑混凝土封闭罩板的内腔空隙，拆除千斤顶；等强连接下固定装置、上滑动装置之间的桥墩主筋，绑扎箍筋及拉筋；浇筑顶升后浇墩身混凝土。本发明可满足结构提升改造过程中安全环保、快速高效、低交通影响等改造目标。
Semi-fixed restraining device for lengthening rigid frame bridge pier and construction method
The invention discloses a semi-fixed restraining device for lengthening a rigid frame bridge pier and a construction method.The semi-fixed restraining device comprises a lower bridge pier and an upper bridge pier, a lower fixing device is arranged at the upper end of the lower bridge pier, an upper sliding device is arranged at the lower end of the upper bridge pier, and the upper sliding device and the lower fixing device are assembled and can be adjusted in a sliding mode; an extension adjusting space is further formed between the upper sliding device and the lower fixing device; the construction method comprises the following steps: constructing the bridge pier; the pier main reinforcement between the lower fixing device and the upper sliding device is cut off, and concrete between the lower fixing device and the upper sliding device is chiseled away; a jack is installed, and jacking operation is conducted; mounting a built-in steel plate; pouring concrete to seal an inner cavity gap of the cover plate, and dismounting the jack; the bridge pier main reinforcements, the binding stirrups and the tie bars are connected between the lower fixing device and the upper sliding device in an equal-strength mode; and pouring and jacking post-pouring pier body concrete. The method can meet the transformation goals of safety, environmental protection, rapidness, high efficiency, low traffic influence and the like in the structure lifting transformation process.
本发明公开了一种用以刚构桥墩接长的半固定约束装置及施工方法，其半固定约束装置包括下部桥墩、上部桥墩，下部桥墩上端设置有下固定装置，上部桥墩下端设置有上滑动装置，上滑动装置与下固定装置相装配，且能进行滑动调节，上滑动装置、下固定装置之间还形成接长调节空间；其施工方法，包括以下步骤：施工桥墩；切断下固定装置、上滑动装置之间的桥墩主筋，并凿除二者之间的混凝土；安装千斤顶，顶升作业；安装嵌固钢板；浇筑混凝土封闭罩板的内腔空隙，拆除千斤顶；等强连接下固定装置、上滑动装置之间的桥墩主筋，绑扎箍筋及拉筋；浇筑顶升后浇墩身混凝土。本发明可满足结构提升改造过程中安全环保、快速高效、低交通影响等改造目标。
Semi-fixed restraining device for lengthening rigid frame bridge pier and construction method
一种用以刚构桥墩接长的半固定约束装置及施工方法
SU WEI (Autor:in) / ZHANG LEI (Autor:in) / MOU ZHAOXIANG (Autor:in) / ZHOU YUEWU (Autor:in) / LI FU (Autor:in) / LIU MEIMING (Autor:in)
08.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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