midas培训-斜弯桥

midas Civil 培训例题集 悬索桥专题

I midas Civil 培训例题集 悬索桥专题

目 录

一. 悬索桥概述 .............................................................................................................................................................................................. - 1 - 1.1 桥塔..................................................................................................................................................................................................... - 1 - 1.2 锚碇..................................................................................................................................................................................................... - 1 - 1.3 主缆..................................................................................................................................................................................................... - 1 - 1.4 吊索..................................................................................................................................................................................................... - 1 - 1.5 加劲梁 ................................................................................................................................................................................................. - 2 - 1.6 鞍座..................................................................................................................................................................................................... - 2 - 1.7 悬索桥的垂跨比 .................................................................................................................................................................................. - 2 - 二. midas Civil中的悬索桥功能 ..................................................................................................................................................................... - 2 - 2.1 悬索桥建模助手功能 ........................................................................................................................................................................... - 2 - 2.2 悬索桥分析功能 .................................................................................................................................................................................. - 2 - 2.3 索单元模拟.......................................................................................................................................................................................... - 2 - 三. 悬索桥建模分析例题 ............................................................................................................................................................................... - 5 - 3.1 桥梁概况 ............................................................................................................................................................................................. - 5 - 3.2 悬索桥建模助手自动生成初始平衡状态.............................................................................................................................................. - 7 - 3.3 悬索桥分析得到修改模型的精确平衡状态 .......................................................................................................................................... - 9 - 3.4 悬索桥倒拆分析 ................................................................................................................................................................................ - 10 - 3.5 悬索桥正装模拟+成桥分析 ............................................................................................................................................................... - 11 - 四. 关于悬索桥分析的说明 ......................................................................................................................................................................... - 12 -

MIDAS/Civil不仅为用户提供了一般的约束边界，而且为用户提供了弹性支撑单元、只受压单元和只受拉单元等各种非线性边界单元。

在建立与地基直接接触的结构物的边界条件时（如筏式基础或隧道等），面弹性支撑首先计算出板单元或实体单元的有效接触面积和地基反力系数，然后程序将自动计算出等效的弹性支撑刚度。

在建立桥梁模型时，用弹性连接模拟桥梁支座并给出支撑方向的刚度值，程序将自动计算出各支座的反力。

释放板端约束与释放梁端约束一样可以释放单元的约束条件。局部坐标轴一般用于输入倾斜的边界，这样可以输出局部坐标系方向的支座反力。

有扩幅段的弯桥的倾斜边界示意图

将箱型钢桥梁的主梁和桥墩用刚性连接单元连接成一体

有紧急出口的隧道护壁模型和自动生成的等效Soil Spring示意图

合同协议 模板

可编辑可修改，欢迎下载

MIDAS/Gen培训课程（三）

—钢筋混凝土结构施工阶段分析

北京市海淀区中关村南大街乙56号方圆大厦1402室

Phone : 010-8802-6170 Fax : 010-8802-6171 E-mail:*********************

Modeling, Integrated Design & Analysis Software 合同协议 模板

可编辑可修改，欢迎下载 目 录

简要......................................................................................................................... 1

设定操作环境及定义材料和截面......................................................................... 2

建立轴网................................................................................................................. 5

建立框架柱及剪力墙............................................................................................. 9

楼层复制及生成层数据文件............................................................................... 11

定义楼面荷载....................................................................................................... 12

midasCivil 2010梁桥专题—梁格

Integrated Solution System for Bridge and Civil Strucutres

目录

󰂃一、剪力-柔性梁格理论

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

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

3.纵梁、横梁抗弯刚度··························································· 4

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

󰂃三、采用梁格建模助手生成梁格模型󰂃

二、单梁、梁格模型多支座反力与实体模型结果比较

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

2. 结构概况···············································································7

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

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

5. 在自重、偏载作用下与FEA实体模型结果比较················24

󰂃四、结合规范进行PSC设计midas