学术论文

      高性能钢预应力撑杆柱整体稳定性能研究

      Study on stability behavior of HPS-prestressed stayed column

      摘要:
      采用高性能钢材对预应力撑杆柱整体稳定性能具有显著影响。采用有限元软件ANSYS对普通强度钢材预应力撑杆柱和无预应力柱进行了弹性屈曲分析,并与理论公式相比较,验证了有限元模型的正确性。考虑了材料非线性、几何非线性和初始缺陷,对模型进行弹塑性轴压稳定承载力分析,比较了钢材种类对预应力撑杆柱和无预应力柱稳定承载性能的影响。分析结果表明:预应力撑杆体系和高性能钢材的合理使用,能显著提高轴心受压柱的承载能力,充分发挥两者的优势。
      Abstract:
      With the development of high-performance steel(HPS) in the modern steel structures,the basic members of prestressed steel structures,i.e.the prestressed stayed column will have a significant influence on the overall stability behavior.The elastic buckling analysis of ordinary steel material prestressed stayed column and ordinary column were studied with the finite element analysis software ANSYS.The finite element model was verified by comparison with the theoretical results.Then the non-linear buckling analysis considering material nonlinearity,geometric nonlinearity and the initial imperfection was conducted to compare the influence of the steel material type on the overall stability behavior of prestressed stayed column and ordinary column.The results show that with the use of prestressed stayed system and HPS,the stability load-carrying behavior of axial compression column are improved substantially.
      作者单位: 北京工业大学建筑工程学院,北京,100124
      刊 名: 建筑结构学报 ISTICEIPKU
      年,卷(期): 2011, 32(11)
      分类号: TU394 TU311.2
      机标分类号: TU3 TH1
      在线出版日期: 2012年4月21日
      基金项目: 国家自然科学基金重点项目,北京市学术创新团队项目,北京大学湍流与复杂系统国家重点实验室开放课题