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A platform for research: civil engineering, architecture and urbanism
Transverse active reinforcing structure of prestressed concrete box girder and construction method
The invention discloses a prestressed concrete box girder transverse active reinforcing structure and a construction method. The transverse reinforcing structure is connected with a bottom plate and a top plate of the prestressed concrete box girder through bolts, the transverse span of the top plate is reduced, a transverse structure system is changed, and the transverse rigidity and transverse bearing capacity of the box girder are improved. Prestress is applied to the reinforcing structure by adjusting the lower cooperative stress adjusting nut, so that the reinforcing structure and the original structure are cooperatively stressed, the longitudinal structure crack of the top plate is closed, and the purpose of active reinforcement is achieved. Therefore, the problems of insufficient transverse prestress or insufficient transverse bearing capacity and rigidity of the prestressed concrete box girder are solved. The reinforcing structure has the main advantages that the structural form is simple, all components are machined in a factory and assembled on site, compared with a traditional reinforcing method, the construction process is simple and convenient, the active reinforcing method is achieved, the cooperative stress performance of the reinforcing structure and an original structure is better, and the effects of one-time reinforcing and follow-up adjustment can be achieved.
本发明公开了一种预应力混凝土箱梁横向主动加固结构及施工方法。所述横向加固结构通过螺栓与预应力混凝土箱梁底板、顶板连接，减小顶板横向跨度，改变横向结构体系，提高箱梁横向刚度和横向承载能力；通过调节下部协同受力调节螺母为加固结构施加预应力，使得加固结构与原结构协同受力，顶板纵向结构裂缝闭合，达到主动加固的目的。从而解决预应力混凝土箱梁横向预应力不足或横向承载力和刚度不足的问题。本发明的主要优点在于：该结构形式简单，构件均在工厂完成加工，现场组装即可，较传统加固方法施工工艺简便，是一种主动加固方法，加固结构与原结构协同受力性能更好，可达到一次加固，后续可调的效果。
Transverse active reinforcing structure of prestressed concrete box girder and construction method
The invention discloses a prestressed concrete box girder transverse active reinforcing structure and a construction method. The transverse reinforcing structure is connected with a bottom plate and a top plate of the prestressed concrete box girder through bolts, the transverse span of the top plate is reduced, a transverse structure system is changed, and the transverse rigidity and transverse bearing capacity of the box girder are improved. Prestress is applied to the reinforcing structure by adjusting the lower cooperative stress adjusting nut, so that the reinforcing structure and the original structure are cooperatively stressed, the longitudinal structure crack of the top plate is closed, and the purpose of active reinforcement is achieved. Therefore, the problems of insufficient transverse prestress or insufficient transverse bearing capacity and rigidity of the prestressed concrete box girder are solved. The reinforcing structure has the main advantages that the structural form is simple, all components are machined in a factory and assembled on site, compared with a traditional reinforcing method, the construction process is simple and convenient, the active reinforcing method is achieved, the cooperative stress performance of the reinforcing structure and an original structure is better, and the effects of one-time reinforcing and follow-up adjustment can be achieved.
本发明公开了一种预应力混凝土箱梁横向主动加固结构及施工方法。所述横向加固结构通过螺栓与预应力混凝土箱梁底板、顶板连接，减小顶板横向跨度，改变横向结构体系，提高箱梁横向刚度和横向承载能力；通过调节下部协同受力调节螺母为加固结构施加预应力，使得加固结构与原结构协同受力，顶板纵向结构裂缝闭合，达到主动加固的目的。从而解决预应力混凝土箱梁横向预应力不足或横向承载力和刚度不足的问题。本发明的主要优点在于：该结构形式简单，构件均在工厂完成加工，现场组装即可，较传统加固方法施工工艺简便，是一种主动加固方法，加固结构与原结构协同受力性能更好，可达到一次加固，后续可调的效果。
Transverse active reinforcing structure of prestressed concrete box girder and construction method
一种预应力混凝土箱梁横向主动加固结构及施工方法
KONG QINGZHAO (author) / YANG XIA (author) / CHEN LIN (author) / SANG XIAOHAN (author) / LI XIUQUAN (author)
2022-11-22
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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