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基于空间有限元的L型盖梁精细化分析
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(同济大学建筑设计研究院(集团)有限公司, 上海 200092)

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Yan Dang, M.E., Engineer. Graduated from Tongji University in 2017. Working at Tongji Architectural Design (Group) Co., Ltd. Research Direction: Bridge Structure Design, Engineering Investigation.

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Refined Analysis of an L-Shaped Cap Beam Based on the Spatial Finite Element Method
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(Tongji Architectural Design (Group) Co., Ltd., Shanghai 200092, China)

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    摘要:

    本文以成都市某新建工程主引桥过渡墩为背景,首先对预应力钢束配束思路进行了简要介绍,其次通过建立空间杆系模型与空间实体模型,在预应力荷载工况下和成桥阶段分别对截面各处应力进行了对比分析,结果表明空间杆系模型可以满足工程实际需要,最后针对L型盖梁由于结构和荷载的不对称所引起的扭转剪应力对结构的影响进行了探讨,相关结论为今后类似工程的设计分析提供了一定的指导意义。

    Abstract:

    The focus of this study is the transition pier of the main approach bridge in a newly constructed project in Chengdu. It begins by introducing the configuration strategy for the prestressed tendon layout. A comparative analysis of sectional stresses is then conducted under prestress loading conditions and at the completed bridge stage, using both spatial frame models and spatial solid models. Special emphasis is placed on investigating the torsional shear stress induced by structural and loading asymmetry in the L-shaped cap beam. The results show that the spatial frame models could meet practical engineering requirements. These findings provide valuable references for the design analysis of similar engineering projects.

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Yan Dang Refined Analysis of an L-Shaped Cap Beam Based on the Spatial Finite Element Method. Prestress Technology 2025,3(02):43-53. 10.59238/j. pt.2025.02.004

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历史
  • 收稿日期:2025-05-21
  • 最后修改日期:2025-06-17
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  • 在线发布日期: 2025-06-28
  • 出版日期: 2025-06-28