求翻译：建立桥面板等效力学参数、受力和变形分析方法，提出板-梁和面板连接结构的抗剪、拉压性能计算公式，研究桥面板有效宽度、板-梁组合系数、组合体系整体工作性能的计算理论，提出结构疲劳分析和抗疲劳设计方法；最终建立铝合金桥面板-钢梁组合体系的核心设计理论和方法。是什么意思？

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