midas基本教程

—钢筋混凝土结构抗震分析及设计MIDAS/Gen培训课程（一）北京市海淀区中关村南大街乙56号方圆大厦1402室Phone:010-8802-6170Fax:[phone]E-mail:[e-mail]目录简要·········································································································1设定操作环境及定义材料和截面····································································2建立轴网···································································································4建立框架柱及剪力墙···················································································8楼层复制及生成层数据文件·········································································10定义边界条件····························································································11输入楼面及梁单元荷载···············································································11输入风荷载·······························································································15输入反映谱分析数据··················································································15定义结构类型····························································································16定义质量··································································································17运行分析··································································································17荷载组合··································································································18查看反力及内力························································································18梁单元细部分析························································································19振型形状及各振型所对应的周期···································································20稳定验算··································································································20周期········································································································21层间位移··································································································21层位移·····································································································22层剪重比··································································································22层刚度比··································································································23一般设计参数····························································································23钢筋混凝土构件设计参数············································································25钢筋混凝土构件设计··················································································27平面输出设计结果·····················································································301简要本例题介绍使用Midas/Gen的反映谱分析功能来进行抗震设计的方法。例题模型为六层钢筋混凝土框-剪结构。基本数据如下：轴网尺寸：见平面图柱:500x500主梁：250x450，250x600次梁：250x400连梁：250x1000混凝土：C30剪力墙：250层高：一层：4.5m二~六层：3.0m设防烈度：7º（0.10g）场地：Ⅱ类2设定操作环境及定义材料和截面1：主菜单选择文件新项目文件保存:输入文件名并保存2：主菜单选择工具单位体系:长度m,力kN定义单位体系3:主菜单选择模型材料和截面特性材料：添加：定义C30混凝土材料号：1名称：C30规范：GB(RC)混凝土：C30材料类型：各向同性定义材料34:主菜单选择模型材料和截面特性截面：添加：定义梁、柱截面尺寸定义梁、柱截面5:主菜单选择模型材料和截面特性厚度：添加：定义剪力墙厚度定义剪力墙厚度4建立轴网1:主菜单选择模型栅格定义轴线：添加：定义X、Y轴网间距定义轴网12:主菜单选择模型单元建立:建立梁单元，同时关闭栅格、轴网轴网153:主菜单选择模型用户坐标系X-Y平面:激活UCS平面保存当前UCS，定义当前用户坐标系名称为“1”定义用户坐标系14:主菜单选择模型用户坐标系X-Y平面:定义插入点(即原点)旋转角度30º，准备插入另一个轴网。定义另外轴网的插入点5:主菜单选择模型栅格定义轴线：添加:栅格名称为2，定义X、Y轴网间距定义轴网266:主菜单选择模型单元建立:建立梁单元，同时关闭栅格、轴网在轴网2上建立梁单元插入轴网27:主菜单选择模型用户坐标系X-Y平面:激活UCS平面保存当前UCS:定义当前用户坐标系名称为“2”定义用户坐标系278：主菜单选择模型单元建立曲线并分割成线单元:建立曲梁建立曲梁9：主菜单选择模型单元复制和移动:输入复制间距，在截面号增幅1(选择次梁截面)，在交叉分割项，将节点和单元都选上。同时删除部分梁单元。建立轴网8建立框架柱及剪力墙1：主菜单选择模型单元扩展：扩展类型：节点——线单元单元类型：梁单元材料：C30截面：500x500输入复制间距：dz=-4.5在模型窗口中选择生成柱的节点生成框架柱2：主菜单选择模型单元修改单元参数参数类型:选择Beta角，Beta=60º，在模型窗口选择轴网2部分需要旋转的框架柱。3：主菜单选择模型单元扩展:扩展类型：线单元——平面单元单元类型：墙单元生成形式：复制和移动输入复制间距：dz=-4.5生成剪力墙94：主菜单选择模型单元分割：单元类型：墙单元任意间距：X=0,Z=1.9,1.25:主菜单选择模型单元删除：在模型窗口选择被删除的墙单元墙单元被分割6：主菜单选择模型单元分割：单元类型：线单元被节点分割：在模型窗口选择要分割的单元及分割单元的节点7：主菜单选择模型单元修改单元参数：参数类型：截面号形式：选择250x1000（连梁截面）模型窗口选择修改的梁单元墙洞口布置10楼层复制及生成层数据文件1.主菜单选择建筑物数据生成层数据:复制次数：5距离：3添加在模型窗口中选择要复制的单元楼层复制2：主菜单选择建筑物数据生成层数据:点击生成层数据：考虑5%偶然偏心考虑刚性楼板：若为弹性楼板选择不考虑地面高度：点击，若勾选使用地面高度，则程序认定此标高以下为地下室勾选各构件承担的层间剪力生成层数据3：主菜单选择建筑物数据自动生成墙号:避免设计时不同位置的墙单元编号相同，特别是在利用扩展单元功能时，一次生成多个墙单元时，这些墙单元的墙号相同，若这些墙单元不在直线上，X向、Y向都有时，程序则认为没有直线墙不给配筋设计。11定义边界条件主菜单选择模型边界条件一般支承:在模型窗口中选择柱底及墙底嵌固点输入边界条件输入楼面及梁单元荷载1:主菜单选择荷载静力荷载工况:DL:恒荷载LL：活荷载WX:风荷载WY:风荷载定义荷载工况122:主菜单选择荷载自重:荷载工况：DL自重系数：Z=-1定义自重3：菜单选择荷载定义楼面荷载类型：定义各房间荷载:办公室、卫生间、屋面名称：OFFICE荷载工况：DL（LL）楼面荷载：-4.3（-2.0）按名称：BATHROOM荷载工况：DL（LL）楼面荷载：-6（-2.0）按名称：ROOF荷载工况：DL（LL）楼面荷载：-7（-0.5）按定义楼面荷载134:主菜单选择视图激活按属性激活：选择按层激活：激活2F层按层激活5:主菜单选择荷载分配楼面荷载:楼面荷载类型：OFFICE分配模式：双向（或长度）荷载方向：整体坐标系Z复制楼面荷载：方向Z，距离4@3在模型窗口指定加载区域节点同样方法输入BATHROOM楼面荷载分配楼面荷载6:主菜单选择荷载连续梁单元荷载：荷载工况：DL选择：添加荷载类型：均布荷载荷载作用单元：两点间直线方向：整体坐标系Z数值：W=-10复制荷载：方向Z，距离4@314输入梁单元荷载7：重复步骤5和6输入屋面荷载及梁单元荷载8:主菜单选择视图激活全部激活视图显示:荷载查看输入的荷载显示荷载15输入风荷载1:主菜单选择荷载横向荷载风荷载添加荷载工况：WX风荷载设计标准：GB50009-2001。风荷载方向系数：X轴方向系数1Y轴方向系数0风荷载输入2:重复步骤1，输入Y向风荷载WY,注意此时风荷载方向系数：X轴方向系数0，Y轴方向系数1输入反映谱分析数据1