王国富;魏勋贺;王渭明;路林海;

• 1:山东科技大学土木工程与建筑学院
• 2:济南轨道交通集团

摘要(Abstract)：

针对济南轨道交通R1线高架线大跨异型预应力混凝土U型梁,基于ANSYS软件中的PDS平台,采用蒙特卡罗法对其进行跨中截面纵向应力、横向应力及竖向位移的分析。对影响抗力模型的各参数进行特征统计,确定了承载能力极限状态和正常使用极限状态的功能函数,采用验算点法和子集模拟法分别计算了不同位置的可靠度指标。结果表明:U型梁的绝大部分失效情况由挠度控制,而挠度指标绝大部分都大于目标可靠度的5.7,U型梁左右侧上翼缘可靠度指标过低,需要加强该位置的配筋设计和监测;改进的子集模拟法相对误差大都在10%以内,更适合作为U型梁结构可靠度分析的计算方法。

关键词(KeyWords)： U型梁;可靠度分析;子集模拟法;ANSYS/PDS;轨道交通

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(41472280);; 住房城乡建设部科学技术项目(2016-K4-053);; 济南市优秀创新团队资助项目(济政字[2016]40号)

作者(Author): 王国富;魏勋贺;王渭明;路林海;

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DOI:

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