gtmenu gtstrudl

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GT STRUDL

Version30

Release Guide - Vol. 2 of 2

GTMENU

April 2009

Computer-Aided Structural Engineering Center

School of Civil & Environmental Engineering

Georgia Institute of Technology

Atlanta, Georgia 30332-0355

U.S.A.

Telephone: (404) 894-2260

Fax: (404) 894-8014

e-mail: [email protected]


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NOTICES

This GTSTRUDLRelease Guide is applicable to Version 30 with a release date in the

GTSTRUDL title block of April 2009.

The GTSTRUDL computer program is proprietary to, and a trade secret of the Georgia

Tech Research Corporation, Atlanta, Georgia, U.S.A.

GTMenu and its documentation were developed as an enhancement to GTSTRUDL authored

by the Computer-Aided Structural Engineering Center, Georgia Institute of Technology.

DISCLAIMER

NEITHER GEORGIA TECH RESEARCH CORPORATION NOR GEORGIA INSTITUTE

OF TECHNOLOGY MAKE ANY WARRANTY EXPRESSED OR IMPLIED AS TO THE

DOCUMENTATION, FUNCTION, OR PERFORMANCE OF THE PROGRAM

DESCRIBED HEREIN, AND THE USER OF THE PROGRAM IS EXPECTED TO MAKETHE FINAL EVALUATION AS TO THE USEFULNESS OF THE PROGRAM IN THEIR

OWN ENVIRONMENT.

Commercial Software Rights Legend

Any use, duplication, or disclosure of this software by or for the U.S. Government shall be

restricted to the terms of a license agreement in accordance with the clause at DFARS

227.7202-3 (June 2005).

This material may be reproduced by or for the U.S. Government pursuant to the copyrightlicense under the clause at DFARS 252.227-7013, September 1989.

Copyright 2009

Georgia Tech Research Corporation

Atlanta, Georgia 30332-0355

U.S.A.

ALL RIGHTS RESERVED

S)))))))))))))))))Q

GTSTRUDL is a registered service mark of the Georgia Tech Research Corporation, Atlanta,

Georgia.

Windows Vista, Windows XP, Windows 2000 and Windows NT are registered

trademarks of Microsoft Corporation in the United States and/or other countries.

Microsoft Office Excel is a registered trademark of Microsoft Corporation in the United

States and/or other countries.


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Table of ContentsChapter Page

NOTICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

DISCLAIMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Commercial Software Rights Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

Chapter 1

1.0 Objectives & Overview of Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.3 Overview of Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.4 Contents and Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Chapter 2

2.0 How to Start GTMenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Chapter 3

3.0 GTMenu Desktop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Chapter 4

4.0 Menu Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1 File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2 Create . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.3 Edit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

4.4 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

4.5 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

4.6 Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-184.7 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

4.8 Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

4.9 Coordinate System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26

4.10 Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28

4.11 Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29


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Chapter 5

5.0 Button Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1 Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2 Inquire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.3 Active Independent Static Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

5.4 Display Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-85.5 Display Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

5.6 Annotate Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

5.7 Label Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

5.8 Zoom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

5.9 Rotate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20

5.10 Redraw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

5.11 Redraw Solid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

5.12 View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

5.13 Mode Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

Chapter 6

6.0 Example Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.0-1

6.1 Example 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1-1

6.2 Example 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2-1

6.3 Example 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3-1

6.4 Example 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.4-1

6.5 Example 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5-1

Chapter 7

7.0 Known Problems and Possible Workarounds . . . . . . . . . . . . . . . . . . . . . . . 7-1


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Introduction 1 - 1

1. Objectives & Overview of Capabilities

1.1 Objectives

GTMenu is a graphical user interface within GTSTRUDL that is designed to

generate structural model data and display analysis and design results.

1.2 Intended Audience

This manual is addressed to the structural engineer that will be using GTMenu.

1.3 Overview of Capabilities

GTMenu uses all the conventions, concepts and syntax associated with GTSTRUDL.These include free-field input, optional data labels, access to data tables, change of

units at any time, multiple structural types within the same model, member

eccentricities and end joint sizes. Additional facilities are used only within GTMenu.

Examples of these are automatic generation of IDs, geometric entities called

construction points, lines and curves, as well as material and section property

groups.

Some of the major features of GTMenu are as follows:

1. MODEL CREATION

Structural components and attributes can be specified individually or

automatically generated in a mesh quickly and with a minimum of input.

This includes joints, members, all GTSTRUDL finite element types,

properties, supports and loadings.

2. MODEL EDITING

Any data generated by GTMenu can be changed by using an appropriate

EDIT function. Portions or all of the model may be copied, scaled or

deleted. Members may be easily split (subdivided). Member releases andeccentricities may be specified in the EDIT function. An existing model

may be moved, scaled, or extruded. Users may also right click on a

member, element, or joint and see all of the model attributes. Each attribute

may then be easily changed by double clicking thus activating an EDIT

function.


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1 - 2 Introduction

3. MODEL CHECKING

GTMenu may be used to check and verify models generated within

GTMenu and models generated in GTSTRUDL outside GTMenu.

Specifically, a model can be checked to connect and eliminate duplicate

joints, members and elements that may be automatically generated.CHECK can eliminate duplicate joints. In addition, this feature performs

checks on element distortions and aspect ratios and planar elements.

Computation of the weight and center of gravity of the model and a

summation of the applied loads can be requested.

4. SAVE/RESTORE

You may save a session database at any time and restore the data later to

continue model development. This feature of GTMenu is the same as the

GTSTRUDL SAVE/RESTORE feature available in command mode.

5. DATABASE and INPUT FILE

The GTMenu database can be translated directly into a GTSTRUDL

database for analysis in the same session. You may create a GTSTRUDL

text input file for use as input verification or for later editing and reuse.

6. STANDARD and USER DEFINED VIEWS

GTMenu contains four standard views; isometric, XY plane, XZ plane and

YZ plane. The user may define additional views. The user definable views

can be defined using global or skewed planes or simply a view of thecurrent display. Views may be returned to any time by simply clicking on

a scrollable list of views.

7. DYNAMIC ROTATION

You may dynamically rotate the model by clicking in the graphics area and

moving the cursor using the mouse. You may also cause the structure to

continuously rotate on the screen using the dynamic tumbling option.

8. RESULTS DISPLAY

Analysis results may be displayed within GTMenu. These results include

the display of the deformed structure, dynamic and buckled mode shapes,

the transient response of the structure, force diagrams and envelopes,

contouring of finite element results, the vector display of 2D finite

element principal results, and joint reactions. You may also label member

and forces at the start and end of each member. The deformed structure,

dynamic and buckled mode shapes and the transient response may be

animated. You may also animate the deformed shape or the force/moment

diagrams as a moving load moves across the structure.


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Introduction 1 - 3

Steel design code check results may also be displayed including the

Pass/Fail status of a member, actual/allowable stress and Kl/r values, and

controlling code provisions.

Offshore design punching shear results may also be displayed includingthe Pass/Fail status of a member, actual/allowable stress and Geometric

Ratio (API Equation 4.1-1) checks, and controlling code provisions.

Plastic hinge results may also be displayed indicating the percentage of a

complete plastic hinge at the start or end of a member.

9. DRAW SOLID SHAPES

Finite elements may be displayed as solid shapes. In addition, steel

shapes taken from tables of steel shapes may be displayed as solid shapes

with the cross-sections drawn to scale. Member Properties specified usingthe Member Dimension command (circles, rectangles, tees, RL and LL

concrete cross-sections) may also be shown as color-filled solids.

Variable member properties will also be shown.

10. DEFAULT SETTINGS

Default Settings allows you to set default values used by GTMenu.

Examples are default print options and color usage.

11. DELETION (in each Creation menu)

Any data generated in the current menu can be deleted without leaving the

current menu. This makes it easy to eliminate mistakes immediately.

12. AUTOMATIC DIMENSIONING

GTMenu can annotate the screen with dimension lines and automatically

calculated dimensions. Comments can also be placed anywhere on the

screen.

13. NAMES (IDs) for JOINTS, MEMBERS and ELEMENTS

The IDs generated for joints, members and elements may be controlled.You may define an alphanumeric prefix along with a starting integer. You

may change the ID prefix or starting integer as the model is being created.

You may also resequence the IDs for the model.

14. MIXED UNITS OF LENGTH

Whenever a length value is requested (such as a coordinate value), you

may enter the value in feet, inches and inch fractions, regardless of the

currently active units.


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1 - 4 Introduction

15. PRINTED OUTPUT

The graphical display area may be printed at any time. In addition, the

graphical display may be brought into the Scope Editor for the addition of

annotation, changing of colors or moving existing annotation.

16. TEXT INPUT FILE

A text GTSTRUDL input file reflecting the current model data may be

created at any time. The input file may be created for the entire model or

a portion of the model.

1.4 Contents and Organization

This document discusses GTMenu start-up procedures and describes the layout of

the GTMenu desktop. In addition, it describes the functionality of the top level

menus. This manual provides example problems in Chapter 6 which demonstrate

the features of GTMenu. In the examples, italic type indicates menu selections

which you pick with a mouse and bold type indicates data or commands which you

enter on the keyboard.

A list of known problems with GTMenu and possible workarounds is presented in

Chapter 7.


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How to Start GTMenu 2 - 1

2. How to Start GTMenu

From the GTSTRUDL StartupWizard as shown below, select GTMenuand then select OK.

or from GTSTRUDL Output - GTSTRUDL window select Modeling and then select

Graphical Modeling (GTMenu)as shown below:


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2 - 2 How to Start GTMenu

or by selecting the icon from the Toolbar for GTMenu as shown below,

or from the Command input box at the bottom of the GTSTRUDL Output window, enter:

menuor gtmenu


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3 - 2 GTMenu Desktop

C Mode Barwhich allows you to specify how you want to select or identify

joints, members and elements.

C Tool Tipswill become visible when the cursor rests on buttons on the Button

Bar.

C Independent Loadwill display the first active independent static loading

name or the last loading activated in GTMenu for Create, Edit, Display or

Results functions.

C Arrow Keyswhich allow you to use the arrow keys on the keyboard to

Rotate, Zoom, and Pan on the model.

Using GTMenu

Click the left mouse button to select any menu item, dialog button or item from a list.

(While creating a model or selecting model items in the Graphics Window, you may select

another menu item or dialog item to exit graphics processing and return to menu processing).

You may double-click the left mouse button to select any item from a list such as a property

name or load name.

If graphics processing (selecting with mouse or animation) is being performed, click the

right mouse button to stop graphics processing. If graphics processing is not being

performed, clicking on the right mouse button on a joint, member or element will provide

you with information regarding that joint, member or element. Hold down the control key

and right-click on a joint, member or element to get information about the active loading on

that joint, member or element.

Press the Enter key after inputting the data into an input box.

You may use the arrow keys on the keyboard to rotate, zoom or pan the model in the

Graphics Window. The current function of the arrow keys is shown at the top of the

Graphics Window. The default function of the arrow keys is set to rotate. To enable arrowkey functionality, select the Graphics Window by left-clicking in the Graphics Window

when not performing graphics processing. After selecting the Graphics Window, the image

may be rotated about the screens horizontal axis by using the up/down arrow keys. To

rotate about the screens vertical axis, use the left/right arrow keys.


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GTMenu Desktop 3 - 3

To zoom in or out within the Graphics Window using the arrow keys, (select the Graphics

Window to make it the active window, then press Z or z to set the arrow keys to zoom

mode), and then use the up/down arrow keys to zoom in or out. You may also change the

function of the arrow keys to a pan mode by pressing P or p. Then, the arrow keys will

pan the graphics image; up, down, left or right depending on which arrow key is selected.To change the function of the arrow keys back to rotate, press R or r.

In addition to the arrow keys and the Z or z, P or p and R or r keys, additional

hot keys are (you may use upper or lower case characters):

to rotate about screen z axis

U to return to the fUll structure (use after zooming),

W to Window using the cursor,

LA Label All joints, members, and elements,

LJ (names) Label All or named joints,

LM (names) Label All members and elements or named members/-

elements,

A Again : draw the Display again

B to go back to a previous display after zooming, rotating,

panning or changing views,

F to go forward to a previous display (this is only valid after

having gone back so a forward display exists),1 - 9 will cause view 1, 2, 3, . . . 9 to be displayed

0nn will cause view nn to be displayed where nn is an integer

from 10 - 99.

00nnn will cause view nnn to be displayed where nnn is an integer

from 100 - 999,

V display the VIEW menu (see Section 4.4) in more options

mode

I will cause an isometric rotation of the current VIEW (see

Section 4.4) to be displayed,

XY will cause an xy plane rotation of the current VIEW (see


XZ will cause an xz plane rotation of the current VIEW (see



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3 - 4 GTMenu Desktop

YZ will cause a yz plane rotation of the current VIEW (see

Section 4.4) to be displayed.

N iNquire about clicked on entity,

Q hold down the CTRL key when pressing the Q key to write

the Query statistics (see Section 4.4) to the Message Area.

J or J select Joints only (hold down the CTRL key when pressing

the J key for joint load inquiry)

M or M select Members only (hold down the CTRL key when

pressing the M key for member load inquiry)

E or E select Elements only (hold down the CTRL key when

pressing the E key for element load inquiry)

H list a short description of the hot keys similar to the above

where

is a carriage return (the Enter key)

When entering data into tables (e.g. Variable Spacing), press Enter or use the arrow keys

to move from one table entry to the next entry. The mouse may also be used to move to a

table entry by moving the cursor to the next entry box and clicking the left mouse button.


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4 - 1

4. Menu Bar

The Menu Bar located at the top of the desktop reveals pull-down menus when

invoked. Selections from the Menu Bar provide access to GTMenu commands and features.

The menu selections can also be activated without a mouse using accelerator keys. Aselection in the main Menu Bar is activated by selecting an sequence where

is the underlined letter in the Menu Bar. Once the pull-down menu appears, you can

press the without the to select from the pull-down menu. The following

sections describe each item in the Menu Bar.

4.1 Fileitem from Menu Bar

File

Restore Model ...

Save Model ...

Generate GT STRUDL text input ...

Page Setup

Print

Print Preview and Edit

End GTMenu

Purpose

The File menu allows you to restore a model from a previous session, save thecurrent model data, generate a GT STRUDL input file, print the Graphics Window,

print preview and edit the Graphics Window using the Scope Editor and end

GTMenu to return to the main GTSTRUDL Output window.

Functions

Restore Model

To restore a previous model, select Restore Model from the File menu. A

dialog box appears containing a list of saved models. Double click on a selection

from the list to restore that model.

Save Model

You may save the existing model by selecting Save Model under the File menu.

As in Restore, a dialog box appears containing a scrollable list of saved models.

Enter a new name in the input box to save as a new model or select a name from

the list to save as an existing model.


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4 - 2

Generate GT STRUDL text input

Generate GT STRUDL text input allows you to generate a GT STRUDL input

file (.gti file). A dialog box appears to allow you to format the input file, enter

an input file name, enter an optional model name and description.

The generated input file will contain the following information:

Coordinates

Supports and Joint Releases

Incidences (Member and Element)

Material, Element, and Member Properties

Member Eccentricities and End Joint Size

Member Releases

Beta angles

Static Loadings

Loading Combinations

Steel Design Parameters and Constraints

Group, Column Line, Girder, and Physical Member Definitions

Mass data such as Lumped or Consistent Mass, Joint Inertias, and

Member Added Mass

GTMenu Point Coordinates

GTMenu Line Incidences

If a view is active that contains only a portion of the structure, you may havethe generated input file contain only information related to joints, members,

and elements in the current view.

The generated input file does not contain the following information:

Joint Ties and Joint Constraints (Rigid Bodies)

Dynamic Loadings including the storing of time history or response

spectrum curves

Dynamic Damping

Dynamic Parameters

Nonlinear Effects

Analysis commands

List or Print commands

Page Setup

Selecting this option will pop-up a dialog which allows you to apply templates

and specify margins to later be used by the Print and Print Preview and Edit

functions below.


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4 - 3

Print

The Graphics Window will be printed to the default Windows printer.

Print Preview and Edit

The Graphics Window will be captured and opened in the Scope Editor. The

Scope Editor allows you to add annotation, alter colors, zoom in on the image,

copy to the clipboard and to print the image. You may also export the image in

the Scope Editor to an enhanced metafile format (.emf file). This will allow you

to later insert the graphical image in another file such as a Microsoft Word or

Power Point document.

End GTMenu

You will return to the GTSTRUDL Output window if no changes have been

made. If you have made changes to an existing model while in GTMenu, you

will be asked if you want to keep the changes. If you select Yes, you will return

to the GTSTRUDL Output window with your changes. If you selectNo, yourchanges will be discarded and you will return to the GTSTRUDL Output window

with the original model.


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4 - 4

4.2 Createitem from Menu Bar

Create

Material Properties

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