Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for reinforcing damaged bridge by compositely applying thin steel plate and UHPC (Ultra High Performance Concrete)
The invention discloses a method for reinforcing a damaged bridge by compositely applying a thin steel plate and UHPC (Ultra High Performance Concrete), which aims at the local recovery bearing performance requirement of the impacted damaged bridge, utilizes the advantages of high tensile strength and elasticity modulus of the UHPC and high interface strength with existing concrete, fills the UHPC in an impacted damaged area and an undamaged chiseling area of a box girder, recovers the rigidity of the damaged area, and improves the rigidity of the damaged area. Meanwhile, by means of the shearing resistance of the interface of the UHPC and the undamaged chiseling area, the normal drawing force between the UHPC filling and reinforcing area and the box girder webs on the two sides of the UHPC filling and reinforcing area is converted into shearing force of the interface of the UHPC and the undamaged chiseling area, and it is guaranteed that the UHPC and the undamaged chiseling area can work cooperatively; meanwhile, by means of the advantages of high tensile strength and easy machining and forming of the thin steel plate, the thin steel plate is used as a permanent formwork of the reinforcing area while enhancing the tensile property of the reinforcing area, the reinforcing construction efficiency is improved, and the construction cost is saved.
本发明公开了一种复合应用薄钢板与UHPC的受损桥梁加固方法，本发明针对撞击受损桥梁的局部恢复承载性能要求，利用UHPC抗拉强度与弹性模量高，与既有混凝土界面强度高的优点，在箱梁撞击损伤区域与未损伤凿毛区填充UHPC，恢复损伤区的刚度，同时利用UHPC与未损伤凿毛区界面的抗剪性能，将UHPC填充加固区与UHPC填充加固区两侧的箱梁腹板之间的法向拉拔力转化为UHPC与未损伤凿毛区界面的剪力，保证二者能够协同工作；同时，利用薄钢板抗拉强度高与易加工成型的优点，在利用薄钢板增强加固区受拉性能的同时将其用作加固区永久模板，提高加固施工效率，节约施工成本。
Method for reinforcing damaged bridge by compositely applying thin steel plate and UHPC (Ultra High Performance Concrete)
The invention discloses a method for reinforcing a damaged bridge by compositely applying a thin steel plate and UHPC (Ultra High Performance Concrete), which aims at the local recovery bearing performance requirement of the impacted damaged bridge, utilizes the advantages of high tensile strength and elasticity modulus of the UHPC and high interface strength with existing concrete, fills the UHPC in an impacted damaged area and an undamaged chiseling area of a box girder, recovers the rigidity of the damaged area, and improves the rigidity of the damaged area. Meanwhile, by means of the shearing resistance of the interface of the UHPC and the undamaged chiseling area, the normal drawing force between the UHPC filling and reinforcing area and the box girder webs on the two sides of the UHPC filling and reinforcing area is converted into shearing force of the interface of the UHPC and the undamaged chiseling area, and it is guaranteed that the UHPC and the undamaged chiseling area can work cooperatively; meanwhile, by means of the advantages of high tensile strength and easy machining and forming of the thin steel plate, the thin steel plate is used as a permanent formwork of the reinforcing area while enhancing the tensile property of the reinforcing area, the reinforcing construction efficiency is improved, and the construction cost is saved.
本发明公开了一种复合应用薄钢板与UHPC的受损桥梁加固方法，本发明针对撞击受损桥梁的局部恢复承载性能要求，利用UHPC抗拉强度与弹性模量高，与既有混凝土界面强度高的优点，在箱梁撞击损伤区域与未损伤凿毛区填充UHPC，恢复损伤区的刚度，同时利用UHPC与未损伤凿毛区界面的抗剪性能，将UHPC填充加固区与UHPC填充加固区两侧的箱梁腹板之间的法向拉拔力转化为UHPC与未损伤凿毛区界面的剪力，保证二者能够协同工作；同时，利用薄钢板抗拉强度高与易加工成型的优点，在利用薄钢板增强加固区受拉性能的同时将其用作加固区永久模板，提高加固施工效率，节约施工成本。
Method for reinforcing damaged bridge by compositely applying thin steel plate and UHPC (Ultra High Performance Concrete)
一种复合应用薄钢板与UHPC的受损桥梁加固方法
GUO DIANJUN (Autor:in) / LYU CHUAN (Autor:in) / HUANG SHUAI (Autor:in) / LIU TAO (Autor:in) / QIN FENGJIANG (Autor:in) / MOU KAI (Autor:in) / ZHAI PENGCHENG (Autor:in) / AN PENG (Autor:in) / LI QING (Autor:in) / ZHANG KUN (Autor:in)
06.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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