论文部分内容阅读
劲性支撑穹顶结构是一种新型的预应力空间结构,施工张拉过程中结构外形很难与设计图纸一致。采用正交设计方法对结构进行敏感性分析。对跨度为76m的肋环型劲性支撑穹顶结构进行敏感性分析,分析表明支座定位的竖向偏差影响大且高度显著,环向偏差影响小且不显著;对外圈脊索内力,除外圈撑杆杆长偏差影响不显著、内圈斜杆杆长偏差影响显著外,其它影响因素均高度显著。对内测撑杆上节点竖向位移,内圈斜杆和外圈撑杆偏差影响不显著,外圈脊索偏差影响显著,其它影响因素均高度显著。研究成果可为工程实践中的索力调节提供一定的理论参考。
Strong support dome structure is a new type of prestressed space structure, the structure of the construction process is difficult to design drawings consistent. The orthogonal design method is used to analyze the sensitivity of the structure. Sensitivity analysis of the rib-ring-type stiffening support dome with a span of 76m shows that the vertical deviation of the bearing support is large and highly significant, and the circumferential deviation has little effect and is not significant. Pole length deviation is not significant, the inner deviation of the slant rod significant deviation, the other factors are highly significant. The vertical displacements of the knuckle joints, the insignificance of the diagonal bars of the inner ring and the struts of the outer ring are insignificant, the chordal deviation of the outer ring is significantly affected, and other influencing factors are highly significant. The research results can provide some theoretical references for the adjustment of cable force in engineering practice.