无铰缝空心板桥设计与仿真分析  

Design and simulation analysis of hollow slab bridge without hinge joint

作　　者：周湘君 廖睿轩 王俊杰[2] 胡峰强[2] ZHOU Xiangjun;LIAO Ruixuan;WANG Junjie;HU Fengqiang(Jiangxi Transportation Design and Research Institute Co.,Ltd.,Nanchang 330052,China;School of Infrastructure Engineering,Nanchang University,Nanchang 330031,China)

机构地区：[1]江西省交通设计研究院有限公司,江西南昌330052 [2]南昌大学工程建设学院,江西南昌330031

出　　处：《南昌大学学报（工科版）》2023年第3期261-267,共7页Journal of Nanchang University(Engineering & Technology)

摘　　要：传统空心板桥铰缝剪力传递效果差,横向连接性能弱,影响桥梁行车安全及使用寿命。设计一种无铰缝空心板结构,通过采用无铰缝设计加大单片空心板梁宽和增强混凝土桥面铺装来改善空心板桥整体结构受力。建立梁单元全桥有限元模型以及实体局部模型,并根据最不利原则简化计算,分别对梁板和桥面铺装进行受力验算。结果表明:该无铰缝空心板桥设计基本合理,结构受力满足规范要求,抗弯性能提升了6.0%,抗剪性能提升了9.6%,结构的承载力得到了提升,且横向传力性能优于传统空心板桥,具有更广泛的适用场景,可为该类型桥梁设计和推广运用提供理论参考。The traditional hollow slab bridge has poor hinge joint shear transfer effect and weak transverse connection performance,which affects the driving safety and service life of the bridge.A kind of hollow slab structure without hinge joint was designed.The stress of the whole structure of hollow slab bridge was improved by increasing the width of single hollow slab beam and strengthening concrete bridge deck pavement.The finite element model of the whole bridge and the solid local model of the beam element were established,the calculation was simplified according to the most unfavorable principle,and the stress checking calculation of the beam slab and bridge deck pavement was carried out respectively.The results showed that the design of the hingeless hollow slab bridge was basically reasona-ble,the structural stress meet the requirements of the specification,the flexural performance was improved by 6.0%,the shear perform-ance was improved by 9.6%,the bearing capacity of the structure was improved,and the lateral force transmission performance was bet-ter than that of the traditional hollow slab bridge.It has a wider range of applicable scenarios and can provide a theoretical reference for the design and promotion of this type of bridge.

关 键 词：预应力混凝土空心板桥 无铰缝 有限元模型 设计计算 

分 类 号：TU391[建筑科学—结构工程]