钢筋混凝土拱桥0^(#)节段现浇支架设计与分析  

Design and Analysis of Cast-in-place Support for the 0#Section of Reinforced Concrete Arch Bridge

作　　者：申晓平 SHEN Xiao-ping(China Railway 17th Bureau Group Urban Construction Co.,Ltd.,Guiyang 550000,China)

机构地区：[1]中铁十七局集团城市建设有限公司,贵阳550000

出　　处：《价值工程》2025年第2期113-115,共3页Value Engineering

摘　　要：本文依托贵州省金沙经仁怀至桐梓高速公路项目,采用有限元分析软件对娅石庆钢筋混凝土拱桥两岸0~#节段进行分析验算。拱桥0^(#)节段重量较重,且拱段为倾斜结构,通过底模板传递给支架的荷载不仅有竖直荷载,而且还有较大的水平荷载。支架设计中通过沿纵桥向设置3排竖向钢管支撑来承载竖向荷载,在拱座内埋设型钢及钢板与纵向水平横杆焊接来抵抗支架承受的水平荷载。验算中采用支架自重、节段钢筋混凝土湿重、施工荷载等荷载组合对现浇支架的刚度、强度、稳定性、基础承载进行分析,支架的刚度、强度、稳定性及临时基础的弯矩、剪力均满足设计规范要求,具有类似工程施工经验借鉴作用。This article relies on the Jinsha Jingrenhuai to Tongzi expressway project in Guizhou Province,and uses finite element analysis software to analyze and verify the 0#section on both sides of the Yashiqing reinforced concrete arch bridge.The weight of the 0^(#)section of the arch bridge is relatively heavy,and the arch section is an inclined structure.The load transmitted to the support through the bottom template not only has vertical load,but also significant horizontal load.In the design of the bracket,three rows of vertical steel pipe supports are installed along the longitudinal direction of the bridge to bear vertical loads.Steel sections and plates are buried in the arch and welded to the longitudinal horizontal bars to resist the horizontal loads borne by the bracket.The stiffness,strength,stability,and foundation bearing capacity of the cast-in-place bracket are analyzed by using load combinations such as the self weight of the bracket,the wet weight of the reinforced concrete segment,and the construction load.The stiffness,strength,stability of the bracket,as well as the bending moment and shear force of the temporary foundation all meet the requirements of the design specifications,and have a reference value for similar engineering construction experience.

关 键 词：有限元分析 钢筋混凝土拱桥 0^(#)节段 现浇支架 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]