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A platform for research: civil engineering, architecture and urbanism
Steel bridge girder end repairing structure and method based on ultra-high performance concrete
The invention discloses a repairing structure and method for the end of a steel bridge girder based on ultra-high performance concrete, and belongs to the technical field of bridge repairing constructions.The repairing structure comprises a UHPC wrapping section, the UHPC wrapping section is connected with the steel bridge girder through a shearing force connecting piece, the UHPC wrapping section wraps the outer portion of a rusted area of the end of the steel bridge girder, and the length of the UHPC wrapping section is larger than the rusted length of the steel bridge girder. The UHPC is adopted for repairing the deteriorated section of the rusted steel bridge girder end, on one hand, due to the fact that the UHPC is compact in structure and high in impermeability, continuous rusting of the steel bridge girder end can be effectively prevented, and therefore the durability of the steel bridge girder is improved; on the other hand, due to the fact that UHPC is light in weight and high in strength, the bearing capacity of the repaired steel main beam is improved by 20% or above compared with that before damage, the vertical rigidity is improved by 60% or above, and the structural rigidity and the bearing capacity of the steel bridge main beam are greatly improved.
基于超高性能混凝土的钢桥主梁端部的修复结构及方法，属于桥梁修复构造技术领域，包括UHPC包覆节段，所述UHPC包覆节段与钢桥主梁通过剪力连接件连接，所述UHPC包覆节段包覆在钢桥主梁端部的锈蚀区域外部，其长度大于钢桥主梁锈蚀长度。本申请采用UHPC修复锈蚀钢桥主梁端部的劣化截面，一方面由于UHPC结构致密、抗渗性强，能够有效阻止钢桥主梁端部的继续锈蚀，从而提高钢桥主梁耐久性；另一方面由于UHPC轻质高强，修复后钢主梁相对其受损前承载能力提高20％以上、竖向刚度提高60％以上，大幅提高了钢桥主梁的结构刚度和承载能力。
Steel bridge girder end repairing structure and method based on ultra-high performance concrete
The invention discloses a repairing structure and method for the end of a steel bridge girder based on ultra-high performance concrete, and belongs to the technical field of bridge repairing constructions.The repairing structure comprises a UHPC wrapping section, the UHPC wrapping section is connected with the steel bridge girder through a shearing force connecting piece, the UHPC wrapping section wraps the outer portion of a rusted area of the end of the steel bridge girder, and the length of the UHPC wrapping section is larger than the rusted length of the steel bridge girder. The UHPC is adopted for repairing the deteriorated section of the rusted steel bridge girder end, on one hand, due to the fact that the UHPC is compact in structure and high in impermeability, continuous rusting of the steel bridge girder end can be effectively prevented, and therefore the durability of the steel bridge girder is improved; on the other hand, due to the fact that UHPC is light in weight and high in strength, the bearing capacity of the repaired steel main beam is improved by 20% or above compared with that before damage, the vertical rigidity is improved by 60% or above, and the structural rigidity and the bearing capacity of the steel bridge main beam are greatly improved.
基于超高性能混凝土的钢桥主梁端部的修复结构及方法，属于桥梁修复构造技术领域，包括UHPC包覆节段，所述UHPC包覆节段与钢桥主梁通过剪力连接件连接，所述UHPC包覆节段包覆在钢桥主梁端部的锈蚀区域外部，其长度大于钢桥主梁锈蚀长度。本申请采用UHPC修复锈蚀钢桥主梁端部的劣化截面，一方面由于UHPC结构致密、抗渗性强，能够有效阻止钢桥主梁端部的继续锈蚀，从而提高钢桥主梁耐久性；另一方面由于UHPC轻质高强，修复后钢主梁相对其受损前承载能力提高20％以上、竖向刚度提高60％以上，大幅提高了钢桥主梁的结构刚度和承载能力。
Steel bridge girder end repairing structure and method based on ultra-high performance concrete
基于超高性能混凝土的钢桥主梁端部的修复结构及方法
LI ZHAOCHAO (author) / ZHANG ZHE (author) / PENG BO (author) / WU MENGQING (author)
2022-03-04
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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