STRAP 2012 Enhancements

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Transcript of STRAP 2012 Enhancements

Version 2012

Enhancements GuideOctober 2012

2012 ATIR Engineering Software Ltd.

STRAP2012 - Enhancements

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HighlightsNew wall element : A new wall element with the following features has been added to the geometry "Wall" option. openings in the wall may be defined additional nodes are automatically added at the top/bottom faces of the wall when it connects to a wall with a different crosssection above or below. User-defined steel shapes : General combined steel shapes can now be defined in STRAP geometry and designed in the steel postprocessor. The shapes can be arbitrary combinations of standard steel sections, plates and sections defined by dimensions. Section property reduction factors : Section area and moment-of-inertia can now be reduced by a user-defined factor. This option is useful for modeling cracked concrete sections. page16

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Interface language : The interface language (input, output and Help) may now be specified in the program "Setup" option. The following languages may be selected: English, Spanish, Russian, Portuguese, Chinese, Taiwan Chinese. page6

Detailed List of Enhancements:General: The interface language (input, output and Help) may now be specified in the program "Setup" option. The following languages may be selected: English, Spanish, Russian, Portuguese, Chinese. Beam/element selection by section property: three new options have been added - "Select all properties" and "Select none" and "Invert selection" Beam numbers revised in STRAP geometry are now automatically updated in the Steel design module. Geometry: General: "Hidden lines" may now be deleted from the display (similar to Results) Nodes: The program will not allow nodes used for defining "Grid lines" to be deleted. Move nodes: if a moved node is connected to a wall element, the program asks the user whether to revise the wall section accordingly. If the relevant wall section is used in other locations in the model, the program will ask whether to revise all of them. Restraints: Delete rigid links: the link can now be deleted in specified directions only.

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Beams - general: "Split beam" with tapered section: the program now automatically creates new sections at the new intermediate nodes new intermediate "solid sections" are created if the end sections are also "solid sections" (from CROSEC). This feature is important for post-tensioned concrete beam design ( POSTTEN). Beam properties: General combined steel shapes can now be defined. the shapes can be arbitrary combinations of standard steel sections, plates and sections defined by dimensions. the various elements can be attached to each other at any location and at any angle. the program calculates all section properties required by the Steel design module - plastic moment, shear center, principal axes, etc. Section area and moment-of-inertia can now be reduced by a user-defined factor. This option is useful for modeling cracked concrete sections. A table of section properties sorted by display colour may now be printed. This table can serve as a legend for a printout of the model geometry that shows the sections in colour. A new option to delete all unused properties has been added. The user may now define a name for each property Increased capacity: 32,000 properties 32,000 materials material name: 20 characters Walls: A new wall element with the following features has been added to the geometry "Wall" option. rectangular openings in the wall may be defined at any location and with any dimensions. additional nodes are automatically added at the top/bottom faces of the wall when it connects to a wall with a different cross-section above or below, i.e. the new element can have more than four nodes. "Old" wall elements are automatically converted to the "new" element and new nodes are automatically added in the cases described above.

Loads:page20

Global loads: applied to nodes: a new option to select the nodes that the load is applied to. applied to a line of beams: a new option to define a chain of lines. a new option to select several global loads and revise the type, direction and level of all of them. Wind loads: a new option to apply loads to only selected beams in a "panel" New wind load Codes added: ASCE, Australia

Results:BS8007: when the program increases the reinforcement to prevent cracking of the concrete on one face, it now also tries increasing the reinforcement on the opposite face when searching for the optimal solution. The Australian concrete code AS3600 has been added: The program now calculates the following according to the code: Punching, slab deflections, slab reinforcement.

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Steel:The new "General combined steel shapes" may be designed by the Steel design module (refer to the Geometry enhancements). Design according to the ASCE code has been updated to the 2012 version Design according to the AASHTO code has been updated to the 2012 version

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Different "sets" of weight eccentricities may now be defined for a model: Each set can be assigned to an earthquake direction and the calculation of natural frequency and mode shapes for all sets can be carried out simultaneously. The results for all "sets" (or selected ones) can be transferred simultaneously to the STRAP results. A new table that displays for all levels whether they are "soft storeys" and all values used for the soft storey calculation. A new table that displays the"Stability Coefficient ( )" values according to levels. Storey shear table: a new column has been added that shows the moments generated by the shear forces. The following code has been added: Australia AS 1170.4 - 2007 The following Codes have been updated according to the latest versions: ASCE, Taiwan.

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LanguageSelect an interface language. Click the "flag" icon at the top of the program main menu:

Note: the characters may not display correctly after selecting a different language. Revise the Windows "Control panel" "Language and regional settings as explained in the menu.

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Beam selection

Limit by propertiesFurther limit the beam selection according to property groups: Yes: Beams in the property group are selected No: Beams in the property group are not selected Click:Select all

to set all properties to Yes to set all properties to No to toggle the selection for all

Select none

Invert selection

properties

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Move nodesIf a wall is connected to the selected node, the program now asks how to revise the wall section:

The program creates new nodes where necessary.

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Rigid links

RemoveDelete rigid links defined at the specified nodes and links defined in the Walls option. The links may be deleted in all directions or in selected directions only:

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General steel sections

Use this option to create a combined section consisting of any number of steel elements - plates or rolled sections. For example:

"Reference points" are selected on the new subsection and the current combined section; the program combines the sections at the respective reference points. For example:

Subsections may be rolled sections, plates or existing STRAP property steel sections All sections may be rotated to any angle or "flipped" - horizontally or vertically. Refer to: General combined - menus 10 General combined - example 14

- MenusThere are three menus involved in creating a combined section: select subsection 11 ,orientation and connection point correct subsection 12 location (displayed starting with the second subsection) main menu 13

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Select subsection

Section type: Select on of the following: any steel section from the current table any existing property group that is a steel section define a plate Angle:

Reference point: The reference point can be selected at any corner or the mid point of any line (except for round sections). For example:

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Correct location

Dx, Dy : Move the new subsection relative to the reference point. For example this allows a gap to be defined between the sections:

Combined/new section reference point: Select new reference points for the current combined section and the subsection just added or the subsection selected.

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Main menu

Major axis direction: The I section represents the section as displayed and the section will align with the x2 axis as shown in the option, i.e. in the example above:

Note that the in unsymmetric sections the larger side is always placed in the positive axis direction, i.e. the section would be oriented in the model in the same way even if the section were defined with the larger flange at the bottom. Use the Local axes option to modify this default orientation. Subsection:Add

Add a new subsection (first click "Ref