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A platform for research: civil engineering, architecture and urbanism
FRP rib reinforced high-ductility concrete bridge deck seamless connecting plate and structural design method
The invention relates to the technical field of bridge design, in particular to an FRP rib reinforced high-ductility concrete bridge deck seamless connecting plate and a structural design method. Firstly, based on the characteristics of load bearing, temperature and concrete shrinkage of a bridge, the length of a debonding area and the length of a transition area of a bridge deck seamless connecting plate are assumed; secondly, FRP rib reinforcement calculation in the driving direction is carried out based on the maximum crack width in the normal use limit state, and the transverse FRP rib reinforcement ratio is subjected to reinforcement according to the structure; and then, the bonding and anchoring length of the FRP ribs in the driving direction is 12D-22D. Finally, analyzing the internal force of the high-ductility concrete and the FRP rib by adopting numerical simulation, and verifying the rationality of the structural design; the bridge deck seamless connecting plate is prepared from the novel building material high-ductility concrete and the FRP ribs, the problem that time and labor are wasted when expansion joints are frequently damaged and maintained is solved, the driving comfort degree is improved, and a theoretical design basis is provided for small and medium-sized bridge seamlessness.
本发明涉及桥梁设计技术领域，具体涉及一种FRP筋增强高延性混凝土桥面无缝连接板及结构设计方法；首先，基于桥梁承受荷载、温度和混凝土收缩特点，假定桥面无缝连接板脱粘区长度和过渡区长度；其次，基于正常使用极限状态中的最大裂缝宽度进行行车方向的FRP筋配筋计算，横向FRP筋配筋率按照构造配筋。然后，行车方向FRP筋粘结锚固长度为12D~22D。最后，采用数值模拟分析高延性混凝土和FRP筋内力，验证结构设计的合理性；本发明采用新型建筑材料高延性混凝土和FRP筋制备桥面无缝连接板，解决了伸缩缝频繁破坏维修时费力费财问题，提高行车舒适度，为中小型桥梁无缝化提供理论设计依据。
FRP rib reinforced high-ductility concrete bridge deck seamless connecting plate and structural design method
The invention relates to the technical field of bridge design, in particular to an FRP rib reinforced high-ductility concrete bridge deck seamless connecting plate and a structural design method. Firstly, based on the characteristics of load bearing, temperature and concrete shrinkage of a bridge, the length of a debonding area and the length of a transition area of a bridge deck seamless connecting plate are assumed; secondly, FRP rib reinforcement calculation in the driving direction is carried out based on the maximum crack width in the normal use limit state, and the transverse FRP rib reinforcement ratio is subjected to reinforcement according to the structure; and then, the bonding and anchoring length of the FRP ribs in the driving direction is 12D-22D. Finally, analyzing the internal force of the high-ductility concrete and the FRP rib by adopting numerical simulation, and verifying the rationality of the structural design; the bridge deck seamless connecting plate is prepared from the novel building material high-ductility concrete and the FRP ribs, the problem that time and labor are wasted when expansion joints are frequently damaged and maintained is solved, the driving comfort degree is improved, and a theoretical design basis is provided for small and medium-sized bridge seamlessness.
本发明涉及桥梁设计技术领域，具体涉及一种FRP筋增强高延性混凝土桥面无缝连接板及结构设计方法；首先，基于桥梁承受荷载、温度和混凝土收缩特点，假定桥面无缝连接板脱粘区长度和过渡区长度；其次，基于正常使用极限状态中的最大裂缝宽度进行行车方向的FRP筋配筋计算，横向FRP筋配筋率按照构造配筋。然后，行车方向FRP筋粘结锚固长度为12D~22D。最后，采用数值模拟分析高延性混凝土和FRP筋内力，验证结构设计的合理性；本发明采用新型建筑材料高延性混凝土和FRP筋制备桥面无缝连接板，解决了伸缩缝频繁破坏维修时费力费财问题，提高行车舒适度，为中小型桥梁无缝化提供理论设计依据。
FRP rib reinforced high-ductility concrete bridge deck seamless connecting plate and structural design method
一种FRP筋增强高延性混凝土桥面无缝连接板及结构设计方法
CHAI LIJUAN (author) / YUE ZHONGHUA (author) / FAN GAOYU (author)
2024-11-12
Patent
Electronic Resource
Chinese
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