T-section

@SHAPE_BUILDER_ANALYSIS {
@SHAPE_BUILDER_NAME {TsecName} {
@SHAPE_GROUP {WALLED_OPEN}
@SHAPE_TYPE {T_SECTION}
@OPTION_DEFINITION {o1}
@DIMENSIONS {
@DIMENSION_01 {hw}
@DIMENSION_02 {twr}
@DIMENSION_03 {wfr}
@DIMENSION_04 {twl}
@DIMENSION_05 {wfl}
@DIMENSION_06 {αf}
@DIMENSION_07 {tfr}
@DIMENSION_08 {α}
@DIMENSION_09 {β}
}
@MATERIALS {
@MATERIAL_01 {Mat1}
@MATERIAL_02 {Mat2}
}
@IS_DEFINED_IN_FRAME {FrameName}
@MESH_DENSITY {md}
@COMMENTS {CommentText}
}
}

Notes

  • ShapeBuilder can generate beam cross-sections in the shape of a “T.” To define an T-section, use the following parameters.
    1. @SHAPE_GROUP: WALLED_OPEN, and
    2. @SHAPE_TYPE: T_SECTION.
  • The base section is an open section consisting of a top flange connected to a web, as illustrated in fig. 1. One option is available for this shape.
    1. Option 1, activated by setting o1 = 1, consists of a reinforcement located on top of the flange.
  • Optional dimensions @DIMENSION_08 and @DIMENSION_09 define two shaping parameters, denoted α and β, respectively, which are used to round the corners of the section.
  • Sectional shapes are defined in their own local coordinate system, which is assumed to coincide with the global coordinate system. If a fixed frame, FrameName, is specified, the local coordinate system coincides with this fixed frame.
  • The mesh density parameter, md, determines the level of mesh refinement. (Default: md = 4)
  • It is possible to attach comments to the definition of the object; these comments have no effect on its definition.

The T-section: base configuration

Figure 1. The T-section: base configuration.
  • Fig.1 illustrates the base configuration of the T-section, which is composed of the web and bottom flange.
  • The geometric configuration of the T-section if defined by the dimensions listed in table 1, which are also indicated in figs. 1, 2, and 3. Dimensions labeled in red are required. Dimensions labeled in blue are optional and are assigned the default value indicated in table 1.
Component Dimension Symbol Default Nb.
T-section height hw required 01
WebRight thickness twr required 02
FlangeRight width wfr required 03
WebLeft thickness twl twr 04
FlangeLeft width wfl wfr 05
Flange skew angle αf 06
Table 1. Dimensions defining the geometry of the T-section.
  • Zone 1 of the T-section is defined as follows.
    • It comprises the following faces: FlangeTopLeft1, FlangeTopLeft2, FlangeTopLeft3, WebLeft, FlangeTopRight1, FlangeTopRight2, FlangeTopRight3, and WebRight.
    • It is associated with material Mat1 , which can refer to material properties or solid properties.
Figure 2. Detail of the T-section

The T-section: option 1

  • When option 1 is active, i.e., when o1 = 1, the flange is reinforced, as illustrated in fig. 2.
  • The geometric configuration of the reinforcement if defined by the dimensions listed in table 2, which are also indicated in fig. 2. Dimensions labeled in red are required. Dimensions labeled in blue are optional and are assigned the default value indicated in table 2.
Component Dimension Symbol Default Nb.
FlangeReinf thickness tfr twr 07
Table 2. Dimensions defining the reinforcement of the flange.
Figure 3. The T-section: option 1
  • Zone 2 consists of the reinforcement of the web and is defined as follows.
    • It comprises the following faces: FlangeTopReinfLeft1, FlangeTopReinfLeft2, and FlangeTopReinfRight2, and FlangeTopReinfRight1.
    • It is associated with material Mat2, which can refer to material properties or solid properties.