摘要
结合一座实际工程的大跨波形钢腹板组合连续梁桥,阐述其箱梁截面结构设计、混凝土与波形钢腹板之间的剪力连接件、以及布束体系等,之后采用Midas建立了主梁的空间杆系有限元模型,对其混凝土顶、底板应力及抗弯承载力进行了验算,并对波形钢腹板剪应力及剪力连接件剪切承载力单独进行了验算,结果表明:混凝土顶板和底板的抗裂性能满足要求;波形钢腹板强度足够,不会出现剪切破坏和屈曲失稳;剪力连接件设计合理、抗剪能力满足要求。可为类似大跨波形钢腹板PC箱梁提供参考。
Taking the Bajiang River Bridge,which is the first composite box girder bridge with corrugated steel webs with the span over 100 meters,for example,the design configurations of main girder,corrugated steel webs,shear connecting bonds and prestress arrangment are introduced in detail.Then,the finite element model of this bridge is established using Midas Civil. The stesses in the top and bottom concrete slabs and the utimate bending moment of sections are calculated. In addition,the shear stresses in the corrugated steel webs and the shear capacity of shear connecting bonds are calculated alone. The results show that under the limit state of regular service,the stesses in the top and bottom concrete slabs satisfy the code＇s requirement. The shear failure and any types of buckling failure will not happen in the corrugated steel webs. The shear capacity of shear connecting bonds also satisfy the code＇s requirement. This study can provide a reference for design and calculation of large-span non-prismatic composite box girder bridges with corrugated steel webs in the future.
作者
刘海波
王为
李立峰
LIU Haibo;WANG Wei;LI Lifeng(Hunan Provincial Communications Planning,Survey ＆ Design Institution,Changsha 410008,China;Hunan University,Changsha Hunan 410082,China)
出处
《公路工程》
北大核心
2018年第3期87-91,共5页
Highway Engineering
基金
湖南省交通厅科技项目(200706)
关键词
桥梁工程
波形钢腹板PC箱梁
有限元
设计计算
bridge engineering
composite box girder with corrugated steel webs
finite elementdesign and calculation
