Civil 2011 (v1.1) Release Note

Size: px
Start display at page:

Download "Civil 2011 (v1.1) Release Note"

Transcription

1 New Module: GSD Civil 2011 (v1.1) Release Note Integrated Solution System for Bridge and Civil Engineering 1 / 35

2 New Module: GSD Enhancements New Module 3 1. General Section Designer Pre/Post Processing Section Manager 2. Improvement in Beam Detail Analysis 3. Tendon DXF Export and much more Analysis Moment-Curvature Calculation 2. Damping Ratios by Material Properties 3. Considering Consistent Mass in Time History Analysis 4. Improvement in Group Damping And much more Design Irregular Section Check as per EC2-2:06 2. MS Excel Report for Composite Plate-Girder design as per EC4 2 / 35

3 New Module: GSD New module 1. General Section Designer 3 / 35

4 New Module: GSD 1. General Section Designer General Section Check or GSD is a new module added to midas Civil. Scope of GSD: Definition of any irregular cross-section Calculation of section properties Generation of P-M, P-My-Mz, M-M interaction curves Calculation of Section Capacity (in flexure) and Safety Ratio based on member forces Generation of Moment-Curvature curve Plot of stress contours for all the cross-sections All the above features are supported for: RC sections, Steel sections and Composite sections. Work Process Stress Contour 3D PM Interaction Curve Moment- Curvature 4 / 35

5 New Module: GSD User Interface GSD can be called from midas Civil by Tools > General Section Designer. In one model file, more than one section can be created and saved under different names. All the sections are listed in the Works Tree. Double click the section name in the Works Tree to show the section in the section view. Main menu Works Tree Toolbar Section View Table Window Coordinates Message Window Unit Control 5 / 35

6 New Module: GSD Work Process Step 1. Define material Materials : RC or Steel Applied Codes: Eurocode, UNI, British Standard, ASTM, Indian Standard, etc. Nonlinear material properties can also be assigned to concrete, structural steel and rebar materials. 6 / 35

7 New Module: GSD Work Process Step 1. Define material Nonlinear Material Properties Concrete nonlinear properties Parabolic Stress-strain Curve Kent & Park Model Steel nonlinear properties Menegotto-Pinto Model Asymmetrical Bi-linear Curve 7 / 35

8 New Module: GSD Work Process Step 2. Define cross-section Basic shape section by selecting a section from the DB of the standard sections for a country Any irregular cross-section by specifying the shape in the Section View or entering coordinates into a table Model > Shape > Basic Shape General type shape 8 / 35

9 New Module: GSD Work Process Step 2. Define cross-section Merging two shapes Creating hollow sections Model > Shape > Merge Shape Copy Shapes Merged Shapes Creating Hollow Section 9 / 35

10 New Module: GSD Work Process Step 3.1 Select Rebar Material The following stress-strain curves can be assigned to rebars: Elastic-Only Bilinear Model Menegotto-Pinto Model Park Strain Hardening Model > Rebar > Rebar Material Bilinear Model Park Strain Hardening Menegotto-Pinto Model 10 / 35

11 New Module: GSD Work Process Step 3.2 Add Rebars: Various patterns are available for assigning the rebars to a section. Point pattern : Add rebar at a single point. Line Pattern : Add rebars in a line. Arc Pattern : Add rebars in circular arc patterns. Rectangular Pattern : Add rebars in a rectangular pattern. Perimeter Pattern : Add rebars around the outer perimeter of the section by specifying the concrete cover and number of rebars. Model > Rebar > Rebar-Point Pattern 11 / 35

12 New Module: GSD Work Process Step 4. Define Load Combinations and member forces Sign Convention: Clockwise moment about the y and z axes are taken as positive. Counter-clockwise moments are taken as negative. P is taken as positive towards +z axis. Step 5. Cross-section Properties: Apart from general section properties, Principal Properties, Section Modulus & Plastic properties are also calculated. Model > Define Load Combination Model > Section Property 12 / 35

13 New Module: GSD Work Process Step 6.1 Check Results: Interaction Curves Result > Interaction curve P-M interaction curve for a specified angle P-M interaction curve for a Load Combination 13 / 35

14 New Module: GSD Work Process Step 6.1 Check Results: Interaction Curves Result > Interaction curve M-M interaction curve for a Load combination 3 D interaction surface showing all the load combination 14 / 35

15 New Module: GSD Work Process Step 6.2 Check Results: Moment-curvature curve Step 6.3 Check Result: Stress Contour Result > Moment Curvature Curve Move mouse pointer on the curve to see the strain diagram at a particular point. Result > Stress Contour Moment-curvature curve Stress contours 15 / 35

16 New Module: GSD Pre & Post-processing 1. Section Manager 2. Improvement in Beam Detail Analysis 3. Tendon DXF Export 4. Improvement in Tendon Profile Generator 5. Addition of Header and Footer in Dynamic Report Generator 6. Improvement in Traffic line-lane and surface-lane display 16 / 35

17 Pre/Post Processing 1. Section Manager (1) Stiffness For various types of sections (DB, PSC, Tapered Section, Composite Section, General and Composite General Section), transformed section properties can be calculated reflecting tendons and reinforcement. Transformed section properties can be calculated at various locations of a section (1/4, 2/4, 3/4) and the placement of Tendon/Reinforcement can be viewed. Existing functions Section Stiffness Scale Factor and Cross Section Viewer have been integrated. Model > Properties > Section Manager Stiffness Mode of Section Manager Check the transformed section properties with Reinforcement and Tendon reflected 17 / 35

18 Pre/Post Processing (2) Reinforcement Input Input of Longitudinal Reinforcement becomes more convenient (Point/Line/Arc/Circle/Poly Line Type are available for Grid input). Input of Reinforced Shear becomes more convenient. Model > Properties > Section Manager XP style dialog needed Placement of reinforcements using Guide Line Reinforcement Mode of Section Manager Reinforced Shear Input Dialog Box 18 / 35

19 Pre/Post Processing (3) Definition of Stress Points It is now possible to define arbitrary stress points for various types of sections (DB, PSC / PSC Value, Tapered Section, Composite Section, General / Composite General Section). Part 2 of the composite section can now be defined with stress points. Model > Properties > Section Manager Stress Points Mode of Section Manager Base Stress Points Additional Stress Points (for Part 2) 19 / 35

20 Pre/Post Processing 2.Improvement in Beam Detail Analysis Stress calculations at any points are now available for more section types (DB, PSC, Tapered Section, Composite Section, General and Composite General Section). Added stress points can be produced in an Excel report. Results > Beam Detail Analysis Check Additional Stress using Beam Detail Analysis Excel report about Additional Stress 20 / 35

21 Pre/Post Processing 3. Tendon DXF export Tendon Profiles can be exported to DXF in a 2D format (XZ Plane, XY Plane). Load > Prestress Loads > Tendon Profile Tendon exported as a DXF File Tendon placement in a FCM bridge 21 / 35

22 Pre/Post Processing 4. Improvement in Tendon Profile Generator Tendon profiles imported from DXF can be placed in one go, using Origin Point. Various CAD Line Types can be imported. Tools > Tendon Profile Generator Tendon Profile Generator Input Dialog Box Imported Tendon Profiles 22 / 35

23 Pre/Post Processing 5. Addition of Header and Footer in Dynamic Report Generator In the dynamic report, we can add the project information in the header and footer of MS Word. Project Information includes Project Name, Revision, User Name, , Address, Telephone, Fax, Client, Title, File Name, Created, Directory, Modified, and File Size. Procedure of Header and Footer Generation 1. Fill out the Project Information in the File tab. 2. Open the Dynamic Report and double-click Header and Footer in the Report Tree. 3. Select the items to add or remove in the header or footer field by clicking arrow buttons. 4. Use up and down arrows to arrange the order of header and footer items. 5. Click OK to confirm. Tools > Dynamic Report Generator 23 / 35

24 Pre/Post Processing 8. Improvement in Traffic Line-lane and Surface-lane display After displaying the traffic surface lanes, it took long time to change the display of model view. Now, once the traffic surface lanes have been displayed, the view can be changed instantly. After a first display of the traffic surface lanes, the lanes can be displayed instantly from the second time of displaying. Each lane can be displayed separately. Display all the lanes at a time Display one lane at a time 24 / 35

25 Pre/Post Processing Analysis 1. Moment-Curvature Calculation 2. Damping Ratios by Material Properties 3. Considering Consistent Mass in Time History Analysis 4. Improvement in Group Damping 5. Considering Static Load Case for the Initial Loading in Time History Analysis 6. Considering the Construction Stage Load for Initial Loading in Pushover Analysis 7. Option for cumulating reactions and displacements due to initial loads in Pushover Analysis 8. Considering Boundary Change Assignment Function in Pushover Analysis 9. Option for Considering the Shear Failure in Pushover Analysis 10.Addition of Ramberg-Osgood and Hardin-Drnevich Models in Inelastic Hinge Properties 25 / 35

26 Analysis 1. Moment-Curvature Calculation Moment-Curvature Curve calculation function has been added, which is one way of evaluating the section capacity when evaluating the earthquake resistance for existing bridges. Through the simple input of hysteresis curves of various materials, the section capacity can be calculated quickly. Model > Properties > Moment-Curvature Curve Assign the hysteresis property Hysteresis curves of Concrete and Steel Moment-Curvature Curve Produce the results Moment-Curvature Curve input dialog box Produce the report 26 / 35

27 Analysis 2. Damping Ratios by Material Properties An option considering different damping ratios for different materials has been added in the Material Data for time history analysis and response spectrum analysis. In order to apply the damping ratio specified in the Material Data, following damping method needs to be selected in the Time History Load Cases. Response Spectrum Analysis : Strain Energy Proportional Time History Analysis: Element Mass & Stiffness Proportional or Strain Energy Damping Load > Time History Analysis Data > Time History Load Cases Model > Properties > Material > Add > Damping Ratio Default value of damping ratio by material types - Steel : 0.02 (2%) - Concrete / SRC : 0.05 (5%) - USER : 0.00 (0%) 27 / 35

28 Analysis 3. Considering Consistent Mass in History Analysis Now Consistent Mass and Off-diagonal Masses option of Lumped Mass can be considered during the linear and nonlinear time history analysis. In the previous versions, only Lumped Mass could be applied in the time history analysis when Offdiagonal Masses option is checked on. If the Consistent Mass or Off-diagonal Mass option is used, Lanczos method must be selected when performing Eigenvalue Analysis. Model > Structure Type Consistent Mass Mass Offset (Off-diagonal Masses) 28 / 35

29 Analysis 4. Improvement in Group Damping Group Damping dialog box has been divided into Element Mass & Stiffness Proportional and Strain Energy Proportional. Now Mass Coefficient (alpha) can be considered. Coefficients for mass and stiffness (alpha and beta) are automatically calculated. Model > Properties > Group Damping : Element Mass & Stiffness Proportional Model > Properties > Group Damping : Strain Energy Proportional Element Mass & Stiffness Proportional Strain Energy Proportional 29 / 35

30 Analysis 5. Considering Static Load Case for the Initial Loading in Time History Analysis Now Static Analysis Result Import (ST) can be considered as an initial load. In the previous versions, the axial force due to ST initial load was not reflected when determining the yielding of a hinge. In the new version, the axial force due to ST initial load is reflected when calculating the yield strength of moment component. When Increment Method>Load Control is used, Time History Load Cases>Scale Factor is now reflected. Load > Time History Analysis Data > Time History Load Cases 30 / 35

31 Analysis 6. Considering the Construction Stage Load for Initial Loading in Pushover Analysis Final stage member forces from construction stage analysis can be used as initial loads for the pushover analysis. Pushover Analysis > Pushover Analysis Control 31 / 35

32 Analysis 7. Option for cumulating reactions and displacements due to initial loads in Pushover Analysis In the previous versions, reactions due to initial loads were cumulative whereas displacements due to initial loads were not cumulative. Now the user can choose whether to cumulate reactions/displacements due to initial loads or not. Design > Pushover Analysis > Pushover Analysis > Pushover Load Cases In the previous versions, the results due to initial loads were For Reaction/Story shear: cumulative For Displacement: not cumulative When the initial load filed is displayed as Import ST/CS Result, this option is not available. Note that the results from the new version may not be the same as that from the previous versions of midas Civil because ofthis option. 32 / 35

33 Analysis 8. Considering Boundary Change Assignment Function in Pushover Analysis This function can be applied to the following condition: - When the boundary condition of the initial loading is different from that of the pushover loading - When the section stiffness scale factor assigned for the initial loading is different from that of the pushover loading Analysis > Boundary Change Assignment to Load Cases/Analyses 33 / 35

34 Analysis 9. Option for Considering the Shear Failure in Pushover Analysis New option for considering the shear component failure has been added. When the option is selected, the analysis will automatically terminate if the shear hinge occurs in the selected member type. Design > Pushover Analysis > Pushover Global Control 34 / 35

35 Analysis 10. Addition of Ramberg-Osgood and Hardin-Drnevich Models in Inelastic Hinge Properties Two material models have been added to the Inelastic Hinge Properties (Ramberg- Osgood, Hardin-Drnevich) It can be applied for the inelastic time history analysis of the soil. Model > Properties > Inelastic Hinge Properties Ramberg-Osgood, Hardin-Drnevich Hysteresis Curve 35 / 35

36 Analysis Design 1. Irregular Section Check as per EC2-2:06 2. MS Excel Report for Composite Plate-Girder design as per EC4 36 / 35

37 Design 1. Irregular Section Check as per EC2-2:06 Any column with an irregular section can be checked as per EUROCODE2-2: 06 at Ultimate Limit State for moment and shear. Sections imported from AutoCAD or SPC can be checked. Point, linear, and circular type rebars can be assigned to the irregular section. Design > Concrete Design > Column General Section Data for Checking Assign rebar to irregular section Design > Concrete Design > Concrete Code Check > Column Checking Graphic design report 3D interaction surface 37 / 35

38 Design 2. MS Excel Report for Composite Plate-Girder design as per EC4 Detailed report in MS Excel format can be generated after Composite Plate-Girder design is performed as per EC4. Design > Composite Plate Girder Design > Position for Design Output Select Position for Design Output Design > Composite Plate Girder Design > Print Result Detailed design report 38 / 35