力混凝土梁桥悬臂施工-典尚设计.pdfVIP

midas Civil 2010梁桥专题—混凝土梁桥 悬臂施工阶段分析 Integrated Solution System for Bridge and Civil Strucutres 典尚设计-路桥效果图、三维动画 目录 1. 桥梁概况··············································································3 2. 结构概况··············································································4 3. 结构组、边界组、荷载组的定义······································ 9 4. 建立结构模型····································································· 11 5. 边界·····················································································12 6. 荷载·····················································································14 7. 钢束······················································································16 · 8. 移动荷载··············································································19 9. 定义施工阶段······································································23 10.查看施工阶段预拱度和0.5静活载预拱度·························25 典尚设计-路桥效果图、三维动画 midas 梁桥专题—预应力混凝土梁桥悬臂施工阶段分析 悬臂施工 Civil 2010 1、桥梁概要 1.1 桥梁概况 本桥为60+100+60三跨预应力混凝土连续梁铁路桥。主梁为单箱单室结构，梁宽12.2m，桥梁 采用挂篮悬臂灌注法施工。 通过本例题重点介绍midas Civil软件的施工阶段仿真模拟、施工预拱度的确定等。 1.2 荷载 （一）恒载 1、结构自重：钢筋混凝土结构按 ，其余按 《铁路桥涵设计基本规范》(TB 10002.1-2005)采用。 2、二期恒载：包括钢轨、扣件、枕木、道碴等线路设备重，以及防水层、人行道栏杆、人行道 遮板、挡碴墙、电缆槽盖板及竖墙等附属设施重量。桥面二期恒载 。 3、预应力及其次内力。 4、混凝土收缩和徐变的影响：环境条件按野外一般条件计算，相对湿度取70％。 5、钢束预应力损失。 （二）活载 1、列车竖向静活载：ZK活载，双线按100％计。 （三）施工荷载 挂篮重量（含模板）按最大悬臂梁段重量确定，采用56t/套。 1.3 施工方案 最长节段长为4m，节段重量大。由于本桥为长联多跨结构，根据主跨合拢顺序，本桥先将2 个边跨合拢，然后合拢中跨，合拢段利用挂篮吊架施工。根据工期安排，全桥共投入2套（4只） 挂篮，对称施工。 主梁施工流程为：墩梁固结→悬臂施工→形成T构→双边跨满堂施工→双边跨合拢→解除墩 梁固结→悬臂梁跨中合拢形成连续梁结构的过程。 典尚设计-路桥效果图、三维动画