田草博客

SAT_BEMRM

tiancao1001 — 2012-5-10 0:56:01

SAT_BEMRM.pm

SATWE_TEM.DAT

SAT_DEF.PM

长悬臂结构与长悬臂构件怎么考虑计算竖向地震

tiancao1001 — 2012-5-8 9:47:46

规范所说的长悬臂结构和长悬臂构件应该是有所区别的
长悬臂结构，还要看：板式悬挑还是梁式悬挑

我想：判断长悬臂结构，应该看悬挑部分承受的重力荷载代表值，占整个结构的重力荷载代表值的百分比，比如超过30%算长悬臂结构。

图片来源：朱炳寅：建筑结构设计问答及分析.pdf ,P104.

有医疗设备建筑楼地面活荷载

tiancao1001 — 2012-4-28 21:08:29

医院楼面地面活荷载

autocad 打开图纸历史记录为空，原理是xp系统注册表原因

tiancao1001 — 2012-4-24 19:54:08

计算器

tiancao1001 — 2012-4-16 21:37:07

'计算器
     _
    Public Sub JSQ()
        Dim Path As String
        Path = Environment.GetFolderPath(Environment.SpecialFolder.System)
        'MsgBox(Path)
        Shell(Path & "\calc.exe", AppWinStyle.NormalFocus, False)
    End Sub

独立基础也可不按照最小配筋率控制

tiancao1001 — 2012-3-15 21:37:48

摘自：建筑地基基础设计方法及实例分析_朱炳寅_2007.pdf

挡土墙的配筋方式

tiancao1001 — 2012-3-15 21:16:22

摘自：建筑地基基础设计方法及实例分析_朱炳寅_2007.pdf

挡土墙下基础的厚度应大于挡土墙的厚度

tiancao1001 — 2012-3-15 21:13:23

摘自：建筑地基基础设计方法及实例分析_朱炳寅_2007.pdf

VB.net 在AutoCAD中拖拽一个“大括号"

tiancao1001 — 2012-3-14 14:33:14

'大括号
Public Class 大括号
    ' 从DrawJig类继承.
    Inherits DrawJig
    ' 拖拽的对象.
    Dim Ent As Polyline
    ' 拖拽指向的点.
    Private StartPt, EndPt As Point3d
    '大括号
     _
    Public Sub DKH()
        'On Error Resume Next
        GetPoint(StartPt)
        Dim acCurDb As Database = HostApplicationServices.WorkingDatabase
        Dim acEditor As Editor = Application.DocumentManager.MdiActiveDocument.Editor
        ' 开始拖拽.
        Dim resJig As PromptResult = acEditor.Drag(Me)
        If resJig.Status = PromptStatus.OK Then
            '确定后添加对象
            AddEnt(Ent)
        End If
    End Sub
    ' Sampler函数用于检测用户的输入.
    Protected Overrides Function Sampler(ByVal Prompts As JigPrompts) As SamplerStatus
        ' 定义一个点拖动交互类.
        Dim optJigPoint As New JigPromptPointOptions(vbCrLf & "请指定插入点:")
        ' 设置拖拽光标类型.
        optJigPoint.Cursor = CursorType.RubberBand
        ' 设置拖动光标基点.
        optJigPoint.BasePoint = StartPt
        optJigPoint.UseBasePoint = True
        ' 用AcquirePoint函数得到用户输入的点.
        Dim resJigPoint1 As PromptPointResult = Prompts.AcquirePoint(optJigPoint)
        Dim curPt As Point3d = resJigPoint1.Value
        If curPt <> EndPt Then
            '折断线绘制*******************************************************
            '
            '                         ∧
            '    ------------------- /  \ ----------------------
            '   /                                               \
            '                         P3
            '
            '    P1               P2       P4            P5
            '   P0                                          P6
            '
            Dim L As Double = StartPt.DistanceTo(curPt)
            Dim A As Double = P2P_AngleByVBA(StartPt.ToArray, curPt.ToArray)
            Dim Pc As Point3d = New Point3d((StartPt.X + curPt.X) / 2, (StartPt.Y + curPt.Y) / 2, 0)
            Dim Pi As Double = System.Math.PI
            Ent = New Polyline
            Dim Temp As Point3d = StartPt
            Ent.AddVertexAt(0, P32(Temp), 0, 0, 0)                      'p0
            Temp = GetPointAR(Temp, L / 10, A * 180 / Pi - 45)
            Ent.AddVertexAt(1, P32(Temp), 0, 0, 0)                      'p1
            Temp = GetPointAR(Temp, 0.359 * L, A * 180 / Pi)
            Ent.AddVertexAt(2, P32(Temp), 0, 0, 0)                      'p2
            Temp = GetPointAR(Temp, L / 10, A * 180 / Pi - 45)
            Ent.AddVertexAt(3, P32(Temp), 0, 0, 0)                      'p3
            Temp = GetPointAR(Temp, L / 10, A * 180 / Pi + 45)
            Ent.AddVertexAt(4, P32(Temp), 0, 0, 0)                      'p4
            Temp = GetPointAR(Temp, 0.359 * L, A * 180 / Pi)
            Ent.AddVertexAt(5, P32(Temp), 0, 0, 0)                      'p5
            Temp = GetPointAR(Temp, L / 10, A * 180 / Pi + 45)
            Ent.AddVertexAt(6, P32(Temp), 0, 0, 0)                      'p6
            Ent.Highlight()
            ' 保存当前点.
            EndPt = curPt
            Return SamplerStatus.OK
        Else
            Return SamplerStatus.NoChange
        End If
    End Function
    ' WorldDraw函数用于刷新屏幕上显示的图形.
    Protected Overrides Function WorldDraw(ByVal Draw As WorldDraw) As Boolean
        ' 刷新画面.
        Draw.Geometry.Draw(Ent)
        Return True
    End Function
End Class

水的浮力是恒载还是活载？

tiancao1001 — 2012-3-14 11:34:44

建筑结构荷载规范 GB 50009--2001
3.1.1 条文说明：

土压力和预应力作为永久荷载是因为它们都是随时间单调变化而能趋于限值的荷载，其标准值都是依其可能出现的最大值来确定。在建筑结构设计中，有时也会遇到有水压力作用的情况，按《工程结构可靠度设计统一标准》GB 50153—92 的规定，水位不变的水压力按永久荷载考虑，而水位变化的水压力按可变荷载考虑。