截面温度不均匀对受约束波纹腹板梁火灾下悬链线效应的影响
发布时间：2018-10-13 12:43
【摘要】：以受约束波纹腹板梁为研究对象,利用有限元模型进行了截面温度均匀和不均匀分布对轴向约束波纹腹板梁悬链线效应影响的对比分析。结果表明:由于不均匀温度下产生的热弯曲效应,约束钢梁在受压阶段的竖向挠度更大而梁内轴力更小;均匀温度受约束钢梁的临界温度比不均匀温度钢梁高6.2%;不均匀温度钢梁的温度比越小,钢梁的热弯曲效应越明显,相应的临界温度越低。
[Abstract]:The finite element model is used to analyze the effect of uniform and non-uniform section temperature on catenary effect of constrained corrugated web beam. The results show that due to the thermal bending effect at the non-uniform temperature, the vertical deflection of the restrained steel beam is larger and the axial force of the beam is smaller at the compression stage. The critical temperature of uniform temperature constrained steel beam is 6.2 higher than that of non-uniform temperature steel beam, and the smaller the temperature ratio of non-uniform temperature steel beam, the more obvious the thermal bending effect of steel beam is, and the lower the corresponding critical temperature is.
【作者单位】： 山东大学土建与水利学院;中通钢构股份有限公司;
【基金】：国家自然科学基金项目(51578322) 山东省自然科学基金项目(ZR2015EM041) 山东省重点研发计划项目(2016GGX103013)
【分类号】：TU352.5
，
本文编号：2268676
[Abstract]:The finite element model is used to analyze the effect of uniform and non-uniform section temperature on catenary effect of constrained corrugated web beam. The results show that due to the thermal bending effect at the non-uniform temperature, the vertical deflection of the restrained steel beam is larger and the axial force of the beam is smaller at the compression stage. The critical temperature of uniform temperature constrained steel beam is 6.2 higher than that of non-uniform temperature steel beam, and the smaller the temperature ratio of non-uniform temperature steel beam, the more obvious the thermal bending effect of steel beam is, and the lower the corresponding critical temperature is.
【作者单位】： 山东大学土建与水利学院;中通钢构股份有限公司;
【基金】：国家自然科学基金项目(51578322) 山东省自然科学基金项目(ZR2015EM041) 山东省重点研发计划项目(2016GGX103013)
【分类号】：TU352.5
，
本文编号：2268676
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