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某大型钢结构连廊提升施工技术

Simulation Analysis of Construction Stage of a High-rise Structure

  • 摘要: 钢结构连廊具有跨度大、自重荷载大、提升高度高、技术难度高等特点,为了解决某钢结构连廊在整体提升过程中的碰撞、受力以及稳定性问题,本文以某实际大型钢结构连廊工程为背景,采用有限元分析软件对钢结构连廊整体提升分别建立约束上下悬臂梁端和不约束上下悬臂梁端两种施工模型,并对每种施工模型划分同步提升和不同步提升两种施工阶段进行仿真分析,验算钢结构连廊的受力性能。结果表明:钢结构连廊在整体提升过程中采取约束上下悬臂梁端比不约束上下悬臂梁端时的变形和应力小,采取同一上下悬臂梁端约束条件下同步提升施工比不同步提升的变形和应力小,通过有限元仿真分析确定了施工方案的操作合理性和可靠性。研究成果对类似钢结构连廊提升施工模拟提供借鉴。

     

    Abstract: In order to solve the collision, force and stability problems of a steel structure corridor in the overall lifting process, this paper takes an actual large-scale steel structure corridor project as the background, and adopts the finite element analysis software to establish two construction models for the overall lifting of the steel structure corridor, namely, constrained upper and lower cantilever beams and unconstrained upper and lower cantilever beams, and divides each construction model into synchronous lifting and unsynchronous lifting construction stages for simulation analysis. In addition, each construction model is divided into synchronous lifting and asynchronous lifting to carry out simulation analysis, and the force performance of the steel structure corridor is verified. The results show that the deformation and stress of the steel structure corridor are smaller when the upper and lower cantilever beams are restrained than when they are not restrained during the overall lifting process, and the deformation and stress are smaller when the same upper and lower cantilever beams are restrained in synchronous lifting than in non-synchronous lifting, and the reasonableness and reliability of the construction scheme are determined by finite element simulation analysis. The research results provide reference for similar steel structure corridor lifting construction simulation.

     

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