浇筑混凝土荷载下预制T型梁模板结构强度研究  

Structural Strength Study on the Precast T-Beam Formwork under Poured Concrete Loading

作　　者：李超帆 王斌华[1] LI Chao-fan;WANG Bin-hua(Key Laboratory of Road Construction Technology and Equipment of Ministry of Education,Chang′an University,Xi′an 710064,Shaanxi,China)

机构地区：[1]长安大学道路施工技术与装备教育部重点实验室,陕西西安710064

出　　处：《机械研究与应用》2025年第2期52-54,62,共4页Mechanical Research & Application

摘　　要：预制T梁模板是一种用于混凝土桥梁现浇成桥的大型施工设备,因其施工便携、高效,且拆模后混凝土成型效果好而成为我国目前积极推广的应用技术。文章对预制T梁模板的结构强度进行分析,综合考虑振捣荷载与倾倒荷载,模拟浇筑混凝土对预制T梁模板的作用力,研究其对模板整体结构强度、刚度的影响。再利用ANSYS有限元分析软件建立预制T梁模板整体的空间有限元模型,通过设置合理的边界条件,分别计算浇筑混凝土荷载作用下侧模板、支撑结构和背楞的Von Mises应力分布以及模板的变形情况。分析结果表明:预制梁模板各部分满足强度及刚度要求,分析结果可为预制梁模板的安全施工提供参考。The precast T-beam formwork is a kind of large-scale construction equipment used for cast-in-place concrete bridges,which has become an application technology that is being actively promoted in China because of its portable and efficient construction and good concrete forming effect after dismantling the formwork.In this paper,the structural strength of precast T-beam formwork is analyzed;comprehensively considering the vibration load and dumping load,force of the poured concrete on precast T-beam formwork is simulated,and its influence on the overall structural strength and stiffness of the formwork is also studied.A spatial finite element model of the precast T-beam formwork as a whole is established by using the finite element analysis software ANSYS,and reasonable boundary conditions are set up to obtain the Von Mises stress distribution of the side formwork,the supporting structure and the back flute under the load of poured concrete respectively,as well as deformation of the formwork.The finite element analysis results show that the precast girder formwork parts meet the strength and stiffness requirements,and the analysis results can provide a reference for the safe construction of precast girder formwork.

关 键 词：预制T梁模板 混凝土荷载 结构强度 有限元分析 

分 类 号：TV331[水利工程—水工结构工程]