BFRP筋桥面铺装横向模型试验研究  

Experimental Research on Lateral Model of BFRP Reinforcement Bridge Deck Pavement

作　　者：朱静 Zhu Jing(Liaoning Provincial Transportation Planning and Design Institute Co.,Ltd.,Shenyang 110166,China)

机构地区：[1]辽宁省交通规划设计院有限责任公司,沈阳市110166

出　　处：《北方交通》2023年第8期14-17,共4页Northern Communications

摘　　要：为研究预制空(实)心板在实际工程中常见的铰缝损坏及单板受力情况,通过加强预制空(实)心板桥梁的结构层的方法,分别采用提高铺装层厚度和更换铺装层筋材的方式对预制混凝土板式桥梁进行试验研究,探索铺装层的变化对铰接板桥的横向受力性能和极限承载能力的影响。研究结果表明:通过加厚铺装层或铺装层中用BFRP筋代替普通钢筋,不但可以延缓铰缝开裂、提升试件的承载能力,同时也可以改善实心板桥梁横向受力情况,使横向荷载分布更均匀。In order to study the common hinge joint damage and single slab stress situation of precast hollow(solid) core slabs in practical engineering,through the method of strengthening the structural layer of precast hollow(solid) slab bridges,the experimental research is carried out on the precast concrete slab bridges respectively by increasing the thickness of the pavement layer and replacing the reinforcement material of the pavement layer,so as to explore the impact of changes in the pavement layer on the lateral stress performance and ultimate bearing capacity of hinged slab bridges.The research results show that:by thickening the pavement layer or replacing ordinary steel bars with BFRP reinforcement in the pavement layer,not only can the crack of hinge joints be delayed and the bearing capacity of the specimen be improved,but also meanwhile the lateral stress situation of solid slab bridges can be improved,so as to make the lateral load distribution more uniform.

关 键 词：BFRP筋 铰缝损坏 单板受力 桥面铺装 荷载横向分布 

分 类 号：U443.33[建筑科学—桥梁与隧道工程]