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为研究大跨度连续钢桁梁桥施工阶段的受力情况,对连续钢桁梁桥的竖向变形和关键节点应力进行了现场实测。依据变形协调原理,建立了节点实体与杆系相结合的多尺度数值分析模型,得到了桥梁成桥阶段的结构整体内力和局部节点受力情况,将桁杆变形和应力的实测值与有限元计算值进行了对比分析。结果表明,下弦杆竖向最大变形值小于6 cm,变形值与计算跨径之比小于1/2 300;杆件实测应力最大值为32 MPa,位于E8节点下弦杆附近。最大变形值和应力值均满足设计规定要求。下弦杆竖向变形实测值与计算值变化趋势基本一致 ...
安鹏, 王文炜
doaj
[Ferroptosis-related long non-coding RNA to predict the clinical outcome of non-small cell lung cancer after radiotherapy]. [PDF]
Xu Q, Liu T, Wang J.
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[Spousal correlations of blood lipid based on a family design]. [PDF]
Li Y+15 more
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[Clinical characteristics of epilepsy with intellectual disability associated with <i>SETD1B</i> gene in three pediatric cases and a literature review]. [PDF]
Li Y+7 more
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