下沉式框架张拉台座设计研究  

Research on the Design of Tensioning Pedestal of Sunken Frame

作　　者：晁晓辉 孙荧艺 徐宇 李铭 Chao Xiaohui;Sun Yingyi;Xu Yu;Li Ming(CCCC Second Highway Engineering Co.,Ltd.,Xi’an 710077,China;School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Institute of Tunnel and Underground Structure Engineering,Xi’an University of Architecture and Technology,Xi’an 710054,China)

机构地区：[1]中交第二公路工程局有限公司,陕西西安710077 [2]西安建筑科技大学土木工程学院,陕西西安710055 [3]西安建筑科技大学隧道与地下结构工程研究所,陕西西安710054

出　　处：《市政技术》2023年第1期134-138,共5页Journal of Municipal Technology

基　　金：陕西省创新能力支撑计划-创新团队(No.2020TD-005)。

摘　　要：基于预制梁场施工过程中场地受限且不易施工等问题,以格鲁吉亚E60公路项目下沉式预制梁场为工程背景,根据该梁场位于路基填方区的特点设计了由传立柱、横梁、横系梁等组成的下沉式框架张拉台座;通过有限元分析软件Midas建立了张拉台座模型,并验证了其整体结构的安全性和可行性。研究结果表明,下沉式框架张拉台座能够在满足3榀I梁超长张拉预制的基础上,保证张拉台座的强度和稳定性,同时其传立柱顶可作为3榀I梁浇筑罐车的车道,便于覆盖养生。该研究成果可为类似工程项目提供参考。During the construction of the precast beam field, there’s the problems of limited site and difficult construction. Taken the sunken precast beam field of the E60 highway project in Georgia as an example, the sunken frame tensioning pedestal composed of transfer columns, beams and cross beams was designed according to the characteristics of the beam field located in the roadbed filling area;A tensile pedestal model was established by the finite element analysis software Midas and the safety and feasibility of the overall structure was verified. The results show that the sunken frame tension pedestal can ensure the strength and stability of the tension pedestal on the basis of satisfying the ultra-long tension prefabrication of 3 I beams, and its transmission column top can be a lane for 3 I beams pouring tanker and is convenient for curing by covering. The research results can provide a reference for similar engineering projects.

关 键 词：预制梁场 下沉式 张拉台座 先张法 施工 

分 类 号：U443.2[建筑科学—桥梁与隧道工程]