Release Note DESIGN OF CIVIL STRUCTURES. Release Date : Aug. 13, 2013 Product Ver. : Civil 2013 v3.1

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1 Release Note Release Date : Aug. 13, 2013 Product Ver. : Civil 2013 v3.1 DESIGN OF CIVIL STRUCTURES Integrated Solution System for Bridge and Civil Engineering

2 Enhancements 1. Improvements in Pushover Analysis 1.1 Export Moment-Curvature Idealized Model from midas GSD to Civil 1.2 Display Ultimate Strain in Concrete and Rebar in GSD 1.3 Display Ultimate Displacement in Pushover Capacity Curve 1.4 Chord Rotation Check Table 1.5 Assign Pushover Hinge at the Center of Hinge Length 2. Improvements in Soil-Structure Interaction Analysis 2.1 Improvements in Multi-linear Type Inelastic Hinge Properties 2.2 Improvements in General Link Properties 3. RC Frame Design as per AASHTO LRFD Steel Frame Design as per AASHTO LRFD Time Dependent Material Properties as per Australian Specification 7. Improvements in BS Moving Load 8. Improvements in AASHTO Permit Vehicle 9. Large Displacement Analysis with Composite Section for construction Stage 10.Improvements in Local Direction Force Sum 11. Improvements in Data Transfer to midas FEA/GTS 11.1 Improvements in Frame to Solid, Frame to Plate function 11.2 Improvement in data export to midas FEA and midas GTS 12. Export in IFC file format 13. Automatic Generation of Time Forcing Function for Railway Bridge 14. Beam Diagram by Assigned Members 6. Moving Load Analysis as per Australian Specification

3 1. Improvements in Pushover Analysis 1.1 Export Moment-Curvature Idealized Model from midas GSD to Civil Moment-Curvature (M-φ Lumped) type hinge properties can be automatically generated based on the idealized moment-curvature curve obtained in midas GSD. For P-M and P-M-M interaction type hinges, a number of Moment-Curvature curves with various axial forces can be imported at once. GSD Imported Type skeleton curve is newly added to simulate the reduction of flexural capacity. 1.2 Display Ultimate Strain in Concrete and Rebar in GSD Ultimate Compressive Strain in Concrete (εcu) and Ultimate Tensile Strain in Rebar (εsu) are separately plotted in Moment Curvature Curve of GSD. Tools tab > General Section Designer Pushover tab > Define Pushover Hinge Properties midas GSD midas Civil 3 / 19

4 1.3 Display Ultimate Displacement in Pushover Capacity Curve Ultimate displacement which is 80% of the peak base shear force are now plotted in the capacity curve of pushover analysis. The ultimate displacement will be required to determine the capacity for the global assessment of the structure. 1.4 Chord Rotation Check Table Verify the chord rotation with ductility demand (μd) for the local verification as per Eurocode and AASHTO LRFD specification. Following values can be verified in the Chord Rotation Check table. - θpd (Plastic Rotation Demand), L (Distance from the plastic joint to the point of zero moment), Lp (Hinge Length) - θy (Yield Rotation), Фy (Yield Curvature), Фu (Ultimate Curvature), θpu (Plastic Rotation Capacity), μd (Ductility Demand) Pushover tab > Pushover Curve Pushover tab > Pushover Hinge Results > Chord Rotation Check Table Ultimate Displacement (80% of Peak Base Shear) Pushover Capacity Curve Chord Rotation Check Table 4 / 19

5 1.5 Assign Pushover Hinge at the Center of Hinge Length Hinge length ratio can be defined by the user for the region which reaches plastic moment for Moment-Curvature (M-Ф Lumped) hinge definition. The user can select whether pushover hinges will be assigned to the center of the hinge length or I & j-end of an element. Pushover tab > Define Pushover Hinge Properties Pushover Hinge Properties Hinge Length 5 / 19

6 2. Improvements in Soil Structure Interaction Analysis 2.1 Improvements in Multi-linear Type Inelastic Hinge Properties Perfect plastic primary curve of multi linear type hysteresis models can be defined in Inelastic Hinge Properties. In the old version, in order to simulate the perfect plastic behavior, the user needed to enter the very small increment of force. Compression-only and Tension-only primary curve can be defined. Scale factor for displacement and force in multi-linear type hysteresis model is added. 2.2 Improvements in General Link Properties 6x6 matrix for Spring and Linear Dashpot type General Link can now be defined. Boundary tab > General Link > General Link Properties Perfect Plastic Hinge Curve Tension-only Hinge Curve 6x6 Matrix for Spring and Linear Dashpot 6 / 19

7 3. RC Frame Design as per AASHTO LRFD 2012 RC frame design as per AASHTO LRFD 2012 is implemented for ultimate strength verification. Flexural, Shear, and Torsion resistances are verified. Seismic design as per AASHTO LRFD Seismic Bridge Design 2011 is provided for Seismic zone 1 to 4. After performing design, graphical report and text format detail report can be checked to verify the design results. Design tab > RC Design > AASHTO-LRFD12 Graphic Report Detail Report 7 / 19

8 4. Steel Frame Design as per AASHTO LRFD 2012 Steel frame design as per AASHTO LRFD 2012 is implemented for ultimate strength verification. Following section shapes are supported: I, Box, Pipe, Channel, D Channel, Angle, D Angle, T, Bar shape section Steel optimal design is also supported as per AASHTO LRFD2012. After performing design, graphical report and text format detail report can be checked to verify the design results. Design tab > Steel Design > AASHTO-LRFD12 Graphic Report Detail Report 8 / 19

9 5. Time Dependent Material Properties as per Australian Specification Creep/Shrinkage and Compressive Strength can be considered as per both AS/RTA and AS After performing construction stage analysis, midas civil provides the following member forces separately for each construction stage: Dead Load, Tendon Primary, Tendon Secondary, Creep Primary, Creep Secondary, Shrinkage Primary, Shrinkage Secondary, Summation Properties tab > Time Dependent Material > Creep/Shrinkage Creep and Shrinkage Compressive Strength 9 / 19

10 6. Moving Load Analysis as per Australian Specification Moving load analysis as per AS is newly implemented. Standard vehicles (W80, A160, M1600, S1600) and user defined vehicles (Truck/Lane, Train, Permit Truck) are supported. Accompanying lane factor can be automatically considered. Concurrent forces and reactions can be checked in Results by Max Value Item table. Load tab > Moving Load > Moving Load Code > Australia Concurrent Force Table Vehicle and Moving Load Case 10 / 19

11 7. Improvements in BS Moving Load Permit vehicle can be defined in BS moving load code for generating various number of wheels in one axle for special operations. Perm it vehicle can be combined with other vehicles in BD37/01 excepting for HA&HB (Auto) in Moving Load Case. User defined HA, HB, and HA&HB vehicles are newly added for considering various type of vehicles and combination with permit vehicle. For user-defined HA&AB (Auto) vehicle, HA lane factor option is added and the exponential field 0.1 for 50<L<1600m loading length can now be modified by the user. Load tab > Moving Load > Moving Load Code > BS Newly added Inactive Active Civil 2013 v2.1 Civil 2013 v3.1 Permit vehicle 11 / 19

12 8. Improvements in AASHTO Permit Vehicle In AASHTO LRFD user defined vehicle, the maximum number of axles for Permit Truck is increased from 50 to 100 axles. Load tab > Moving Load > Moving Load Code > AASHTO LRFD Load tab > Moving Load > Vehicles > User Defined Permit Truck Vehicle 12 / 19

13 9. Large Displacement Analysis with Composite Section for Construction Stage Large displacement analysis can be performed with Composite Section for Construction Stage function. This function will be extremely useful when decks of cable stayed bridge is composed of composite sections. Load tab > Construction Stage > Composite Section for C.S Analysis > Analysis Control > Construction Stage Construction Stage Analysis Control Composite Section for Construction Stage 13 / 19

14 10. Improvements in Local Direction Force Sum When bridge decks are modeled using plate elements and main girders are modeled using beam elements, resultant forces can be calculated in Local Direction Force Sum. In the old version, the resultant forces were obtained only for the plate elements or solid elements only. In the new version, resultant forces can be obtained for the bridges composed of Beam (deck) + Beam (girder) and Plate(deck) + Beam (girder). Local direction force sum can be obtained in any construction stages. In the old version, Local Direction Force Sum was activated only in Post CS. Results tab > Detail > Local Direction Force Sum Plate + Beam Model All Plate Model Local Direction Force Sum 14 / 19

15 11. Data Transfer to midas FEA/GTS 11.1 Improvements in Frame to Solid, Frame to Plate function By using frame section information, create a solid or plate geometry file that can be exported to midas FEA. In the old version, only the straight frame elements were exported at once. In this version, a number of elements regardless of the element direction can be exported to midas FEA. File > Export > Frame Section for Solid/Frame Section for Plate Frame model in Civil Frame model in Civil Solid model in FEA Plate model in FEA 15 / 19

16 11.2 Improvement in data export to midas FEA and midas GTS Data import using mxt file. In the old version, only node and element information were transferred. In the new version, expanded information such as properties, boundary conditions, loads, and analysis control information are supported. Cross-sections data that are not supported in midas FEA are imported as user-type section. Cable elements are imported as truss elements. File > Export > MxT File (for FEA/GTS) Civil Civil FEA FEA 16 / 19

17 12. Export in IFC file format Midas Civil model data can be exported into IFC (*.ifc) format file. This format will be useful for exporting structural analysis model into BIM tools. It includes only geometry information with various type of sections excepting for composite section. It does not support loads, boundaries, and analysis control information. File > Export > IFC File Export from Civil Import in Tekla 17 / 19

18 13. Automatic Generation of Time Forcing Function for Railway Bridge By defining train velocity, element size, train load spacing and train force, time forcing function to simulate the train load can be automatically generated for time history analysis. Tools > Trane Load Generator Import TGS file in Time History Function Train Dynamic Load Function 18 / 19

19 14. Beam Diagram by Assigned Members By Member option is added to check beam diagram by members, not by elements. When member is assigned using Member Assignment function, By Member option will be activated and beam forces by members can be viewed in the model view and table. Absolute maximum, Min/Max, All (I, Mid, J) options are applicable with By Member option. Results tab > Forces > Beam Diagrams Beam Diagram by Elements Beam Diagram by Members Beam Force Table by Members 19 / 19