A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Steel-concrete composite beam and guide-beam-free construction method thereof
The invention provides a steel-concrete composite beam and a guide-beam-free construction method thereof. The composite beam comprises a plurality of sections of mutually spliced steel box beams, longitudinal beams are arranged between every two adjacent sections of steel box beams, the longitudinal beams are located on the lower surfaces of top plates of the steel box beams, the length of the longitudinal beams is matched with the length of the steel box beams, and the longitudinal beams extend in the length direction of the steel box beams; a plurality of bridge deck slabs which are spliced with one another are arranged on a top plate of each section of steel box girder, and a plurality of shear nails extending into the bridge deck slabs are arranged on the upper surface of the top plate; a wet joint is arranged between every two adjacent bridge deck slabs, and the two adjacent bridge deck slabs are poured into a whole through micro-expansion concrete. Longitudinal beams are arranged at the front ends of the steel box girders and between the adjacent steel box girders, the longitudinal beams bear pushing hogging moment and can assist pier mounting, and therefore the problems that an existing composite beam is poor in stress state, a guide beam needs to be arranged in pushing construction, and the deflection of a cantilever end is not easy to control when the span is increased are solved, and the rapid bridge forming method is provided. The bridge deck slab is convenient to construct so as to adapt to incremental launching construction crossing terrains such as rivers.
本发明提供一种钢混组合梁及其无导梁施工方法，组合梁包括多节相互拼接的钢箱梁，相邻两节钢箱梁之间设有纵梁，纵梁位于钢箱梁的顶板下表面，纵梁的长度与钢箱梁的长度相适配，并沿钢箱梁的长度方向延伸的纵梁；每节钢箱梁的顶板上均设有多个相互拼接的桥面板，在顶板的上表面设有多个伸入桥面板的剪力钉；相邻两个桥面板之间设有湿接缝，以通过微膨胀混凝土浇筑为一体。钢箱梁前端及相邻钢箱梁之间设置纵梁，通过纵梁承担顶推负弯矩的同时该可以辅助上墩，从而解决现有组合梁受力状态不佳的问题，顶推施工需设置导梁，跨径增大时悬臂端挠度不易控制的问题，且提供一种快速成桥方法，方便桥面板施工，以适应跨越江、河等地形的顶推施工。
Steel-concrete composite beam and guide-beam-free construction method thereof
The invention provides a steel-concrete composite beam and a guide-beam-free construction method thereof. The composite beam comprises a plurality of sections of mutually spliced steel box beams, longitudinal beams are arranged between every two adjacent sections of steel box beams, the longitudinal beams are located on the lower surfaces of top plates of the steel box beams, the length of the longitudinal beams is matched with the length of the steel box beams, and the longitudinal beams extend in the length direction of the steel box beams; a plurality of bridge deck slabs which are spliced with one another are arranged on a top plate of each section of steel box girder, and a plurality of shear nails extending into the bridge deck slabs are arranged on the upper surface of the top plate; a wet joint is arranged between every two adjacent bridge deck slabs, and the two adjacent bridge deck slabs are poured into a whole through micro-expansion concrete. Longitudinal beams are arranged at the front ends of the steel box girders and between the adjacent steel box girders, the longitudinal beams bear pushing hogging moment and can assist pier mounting, and therefore the problems that an existing composite beam is poor in stress state, a guide beam needs to be arranged in pushing construction, and the deflection of a cantilever end is not easy to control when the span is increased are solved, and the rapid bridge forming method is provided. The bridge deck slab is convenient to construct so as to adapt to incremental launching construction crossing terrains such as rivers.
本发明提供一种钢混组合梁及其无导梁施工方法，组合梁包括多节相互拼接的钢箱梁，相邻两节钢箱梁之间设有纵梁，纵梁位于钢箱梁的顶板下表面，纵梁的长度与钢箱梁的长度相适配，并沿钢箱梁的长度方向延伸的纵梁；每节钢箱梁的顶板上均设有多个相互拼接的桥面板，在顶板的上表面设有多个伸入桥面板的剪力钉；相邻两个桥面板之间设有湿接缝，以通过微膨胀混凝土浇筑为一体。钢箱梁前端及相邻钢箱梁之间设置纵梁，通过纵梁承担顶推负弯矩的同时该可以辅助上墩，从而解决现有组合梁受力状态不佳的问题，顶推施工需设置导梁，跨径增大时悬臂端挠度不易控制的问题，且提供一种快速成桥方法，方便桥面板施工，以适应跨越江、河等地形的顶推施工。
Steel-concrete composite beam and guide-beam-free construction method thereof
一种钢混组合梁及其无导梁施工方法
ZHANG ZHENGYANG (author) / XU PING (author) / WANG MENGDI (author) / NIU ZHUOJIE (author) / LI XIAO (author)
2024-08-09
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Steel-concrete composite beam and construction method of steel-concrete composite beam
| European Patent Office | 2022
Prefabricated steel-concrete composite beam and construction method thereof
| European Patent Office | 2023
Embedded steel-concrete composite beam and construction method thereof
| European Patent Office | 2022
Fabricated steel-concrete composite beam and construction method thereof
| European Patent Office | 2024