09月16日梁桥专题-梁格及PSC设计专题0513.pdfVIP

主讲人：刘美兰

midasCivil2010梁桥专题—梁格

IntegratedSolutionSystemforBridgeandCivilStrucutres

目目录录

一、、剪力剪力-柔性梁格理论柔性梁格理论

1.纵梁抗弯刚度·····················································3

2.横梁抗弯刚度·····················································4

33.纵梁纵梁、、横梁抗扭刚度横梁抗扭刚度··········································44

4.虚拟边构件及横向构件刚度·······························5

二、单梁、梁格模型多支座反力与实体模型结果比较

目目录录

三、采用梁格建模助手生成梁格模型

1.前言··········································································7

2.2.结构概况结构概况··································································77

3.梁格法建模助手建模过程及功能亮点···················11

4.修改梁格·································································22

55.在自重在自重、偏载作用下与偏载作用下与FEAFEA实体模型结果比较实体模型结果比较······2424

四、结合规范进行PSC设计

midasCivil

梁桥专题—梁格梁格

2010

一、、剪力剪力-柔性梁格理论柔性梁格理论

1.纵梁抗弯刚度【强制移轴（上部结构中性轴）法】

a.各纵梁中性轴与上部结构中性轴基本重合

bb..强制移轴强制移轴，，使各纵梁中性轴与上部结构中性轴基本重合使各纵梁中性轴与上部结构中性轴基本重合，，等效纵梁抗弯刚度等效纵梁抗弯刚度

4

midasCivil

梁桥专题—梁格梁格

2010

22.横向梁格抗弯刚度横向梁格抗弯刚度

3.纵梁、横梁抗扭刚度

5

midasCivil

梁桥专题—梁格梁格

2010

44.虚拟边构件及横向构件刚度虚拟边构件及横向构件刚度

此此处d’为为顶板板厚度度(或者

是悬臂的平均厚度）