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抗弯承载力
    Research in Flexural Load Capacity for High Strength Composite Steel-Concrete Beam Bridge
    高强钢—混凝土组合梁桥抗弯承载力研究
    Using finite-element program ANSYS simulate high strength composite steel-concrete beam bridge and calculate each steel-concrete beam bridge's flexural load capacity by change the materials strength and geometry parameter, all steel-concrete beam bridge's results that is simulated by ANSYS and theoretical results should be comprised and analysis, so the advantage mechanical performance about high strength composite steel-concrete beam bridge can be achieved.
    应用有限元程序ANSYS对高强钢—混凝土组合梁桥进行了有限元模拟,通过改变材料强度和几何参数计算出了各种组合梁桥的正截面抗弯承载力,并将所有组合梁的ANSYS模拟值和理论值进行对比分析,从而得出了高强钢—混凝土组合梁桥具有优越的抗弯性能。
    to the indeterminacy of calculating mode, test results of 108 steel beams are collected. On the basis of these test data and statistical calculation, statistical parameters of indeterminacies of calculating mode of flexural load capacity of steel beams are given.
    对于计算模式不定性,根据收集到的国内外108组钢梁试验的相关试验数据,经统计计算得到了钢梁截面抗弯承载力计算模式不定性随机变量的统计参数。
    The calculation formula of flexural load capacity of steel beams is obtained by using the error transfer formula of mathematical statistics.
    运用数理统计学的误差传递公式,推导出了钢梁截面抗弯承载力统计参数的计算公式。
    According to this formula, and statistical parameters of three main factors influencing resistance, statistical parameters of flexural load capacity of steel beams are proposed on the basis of calculating and analyzing.
    根据此公式及影响抗力的三个主要因素的统计参数,经综合计算和分析得到了钢梁截面抗弯承载力的统计参数。
    On the ground of statistical parameters of flexural load capacity of steel beams, and that of dead load and traffic load effect of highway steel bridge, the first order second moment method is used to calculate the partial safety factor of resistance corresponding to two combinations for action effects, and limit state design expression of flexural load capacity for steel beams of highway bridges is determined.
    以钢梁截面抗弯承载力的统计参数为基础,结合钢梁桥上的恒载、活载效应的统计参数,由一次二阶矩验算点法计算确定了相应于两种作用效应组合的抗力分项系数,进而得到了钢梁截面抗弯承载力的极限状态设计表达式。
 

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