MIDAS满堂支精品教程.pdfVIP

满堂支架分析 北京迈达斯技术有限公司 目 录 1、工程概况······································································ 1 2 、定义材料和截面····························································· 1 定义钢材的材料特性 ··························································· 1 定义截面·········································································· 2 3、建模············································································ 4 建立第一根竖杆： ······························································ 4 建立余下三根竖杆： ··························································· 4 建立横向支撑和斜撑单元： ·················································· 5 建立其余三根竖杆间的支撑 添加边界 添加荷载工况··································································14 定义屈曲分析··································································16 4 、查看结果····································································17 查看屈曲模态··································································17 表格形式查看各模态的临界荷载 ··········································17 1、工程概况 在本例题中以一个56m 跨径混凝土连续梁桥满堂支架为基础，介绍midas/Civil 进行稳 定及应力分析的方法。 支架高度6.2m ，钢材材质为A3 钢，支架上方倒扣C 36b 的槽钢，上部荷载通过25mm 竹胶板及方木传递到槽钢，支架竖向间距1.2m，水平间距考虑1m。由于试用版程序节点限 制，模型建立考虑顺桥向5m，横桥向5m；基本信息见下图。 2、定义材料和截面 定义钢材的材料特性 模型 / 材料和截面特性 / 材料/添加 类型钢材； 规范：JTJ(S) 数据库A3 类型用户定义； 规范：无 弹性模量：1.0787e+008 泊松比：0 线膨胀系数：0 容重：5 1 定义截面 注：midas/Civil 的截面库中含有丰富的型钢截面，同时还拥有强大的截面自定义功能。 模型 / 材料和截面特性 / 截面/添加 数据库/用户截面号1； 截面类型（管型截面） 选择用户定义，数据库（GB-YB05）， 截面名称（P50x4），点击适用 数据库/用户截面号2； 截面类型（槽钢）， 截面名称（C 36b），点击适用 数据库/用户截面号3； 截面类型（实腹长方形截面）， 截面名称（15x15cm） H （0.15m） B(0.15m)，点击适用 模型 / 材料和截面特性 / 厚度/添加 数值厚度号1 面内和面外 0.025m，点击适用 ↵ 2 3 3、建模 建立第一根竖杆： 注：对于直线单元，使用midas/Civil 特有的扩展功能可以快速地建立模型。 确认当前单位体系是kN，m 模型节点建立节点