Release Note4 / 29 Civil 2015 Analysis & Design Civil 2015 (V2.1) Release Note Warping normal stresses, fw Bi-moment, df*Mfy Warping shear stresses, τw Flange shears, Vf Section Data

DESIGN OF CIVIL STRUCTURESI n t e g r a t e d S o l u t i o n S y s t e m f o r B r i d g e a n d C i v i l E n g i n e e r i n g

Release NoteRelease Date : FEB 17 2015

Product Ver. : Civil 2015 (v2.1)

Enhancements

(1) Supporting 64bit Solver, Pre/Post-Processing & GPU solver

(2) 7 DOF Beam Elements considering Warping Constant

(3) Implementation of Traffic Lane Optimization Option

(4) Diagram & table results of resultant forces for Local Direction Force Sum

(5) LM1 & LM3 concurrent forces for Eurocode moving load analysis

(6) India special vehicles for India moving load analysis

(7) Stiffness Scale Factor for Plate Element

(8) Performing Pushover Analysis only for Selected Pushover Load Cases

(9) Improvements on Inelastic Hinge Properties

Analysis & Design 3

Pre & Post-Processing

(1) Steel Composite Girder Bridge wizard

(2) Improvement of Wood-Armer moment calculation

(3) Changing Plate Local Axis

(4) Node Local Axis with respect to Reference Line

(5) Implementation of U.S. DOT Rating Vehicle Load for Load Rating Assessment

(6) Implementation of PSC DB Sections for Each U.S. DOT

(7) Auto Generation improvements on Tendon Template Wizard

(8) Addition of Steel Girder Section with Stiffener

(9) Revit 2015 Interface

(10) Tekla Structure v20 Interface

(11) Assigning Floor Loads to the Area surrounded by Plate Elements

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Civil 2015 (V2.1) Release NoteCivil 2015 Analysis & Design

1. Supporting 64bit Solver, Pre/Post-processing & GPU solver

Analysis > Perform Analysis

Case study 1

64-bit solver is capable of accessing memory above the 4GB limit of the Windows 32-bit platform. In a 32-bit operating system there is a limitation of 4GB of memory that can be

addressed. Windows reserves 2GB for the operating system leaving only 2GB for external programs. Now huge models can be analyzed and solution time is much faster.

GPU-accelerated computing offers faster solution time by offloading compute-intensive portions of the solver to the GPU, while the remainder of the codes still runs on the CPU.

Elements 56,634

Analysis Type Static Analysis

System Solution Time

Civil 32-bit 2641.57 sec.

Civil 64-bit 1590.49 sec.1.7 times faster

Case study 2

Elements 116,586

Nodes 158,256

Analysis Type Material Nonlinear Analysis

Now able to solve

System Solution Time

Civil 32-bit Out of Memory

Civil 64-bit 13663.80 sec.

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Warping normal stresses, fw

Bi-moment, df*Mfy

Warping shear stresses, τw

Flange shears, Vf

Section Data Section PropertiesBi-moment and Warping Stress

Non uniform Torsion

2. 7 DOF Beam Elements considering Warping Constant

Properties > Section Properties

• In case of non-uniform torsion which occurs when warping deformation is constrained, torque is resisted by St.Venant torsional shear stress & warping torsion. In Civil 2015 (v2.1),

the effects of warping torsion can be simulated in 1D beam elements for more accurate results in case of the curved member, eccentric loading, and difference in centroid and

shear center.

• Bi-moment method which is approximate method of torsion analysis for practical purpose is also provided.

• When “Consider Warping Effect(7th DOF)” is considered, warping constant (Iw), warping function (w1, w2, w3, w4), and shear strain due to twisting moment (γxy1, γxy2, γxy3, γxy4,

γxz1, γxz2, γxz3, γxz4) can be checked in Section Properties dialog box.

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Mx (Torsional moment, Mx = Mt + Mw)

Mt (Twisting moment)

Mw (Warping moment)

Mb (Bi-moment)

Beam Stress Diagram

Beam Stress (7th DOF) Table

Boundaries > Define Supports, Beam End Release

Results > Reactions, Deformations, Forces, Stresses, Beam Detail Analysis

• Applicable element type: General beam/Tapered beam

• Applicable boundary condition: Supports, Beam End Release

• Applicable analysis type : Linear Static , Eigenvalue , Response Spectrum, Construction Stage Analysis

• Related post-processing: Reactions, Displacements, Beam Forces/Moments, Beam Stresses

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Existing Vehicle location Additional Vehicle locations considered

3. Implementation of Traffic Lane Optimization Option

Load > Moving Load > Traffic Line(Surface) Lanes

In the previous version, when a traffic lane (line lane or surface lane) is defined, the moving load is applied with the vehicle loads located in the center of the lane.

This option transversely floats the vehicle load within the lane and obtains the worst effect of the vehicle placement for each element

Users can define vehicle loads and traffic lanes the same way as in the previous versions. With the “Traffic Lane Optimization” option checked, the worst transverse effect of the

moving load analysis can be obtained for each elements

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Ecc: 17

.5 ft

Ecc: 7.5

ft

Without Traffic Optimization Option

Ecc: 17

.5 ft

Ecc: 7.5

ft

Using Traffic Optimization Option

943.4 kip.ft

1104.9 kip.ft

1029.4 kip.ft

1244.9 kip.ft

Reference Line

17.5 ft

7.5 ft

Reference Line

17.5 ft

7.5 ft

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Curved or skewed girder bridges with composite steel plate girder are frequently simulated with plate and beam elements instead of beam elements with composite section. In this

case, Local Direction Force Sum function is used to obtain resultant member forces. Previously, this function just showed the resultant forces in a text / table format on the basis of

section selected by the user. Force diagram along the member was not viewed by the program.

This function will enable the user to view the force diagram along the member and generate table results for the resultant forces (Fx, Fy, Fz, Mx, My and Mz) of a section consisting

of plate elements and/or beam elements.

Results are available for Static load, Construction stage load, Settlement load, Response spectrum load and Moving Load. In case of the results in moving load analysis,

concurrent forces will be used when “Normal + Concurrent Forces/Stresses” option is selected in Moving Load Analysis Control.

4. Diagram & table results of resultant forces of a group of elements

Properties > Section > Section for Resultant Forces

Results > Forces > Resultant Force Diagram

Resultant Force Diagram

Resultant Force Table

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The user can specify “No. of Division” for the selected structural group or elements. This option will enable the user to easily verify the member forces at every 10th point in a span.

The concept of virtual beam is introduced to draw resultant force diagram. The virtual beams need to be assigned to the group of elements for which resultant force diagram will be

generated. The virtual beams will not be viewed by the user but the local axes of virtual beams can be viewed by checking on the option in Display > Property tab.

Section cuts for which resultant forces will be calculated can be defined using structure group, element selection or polygon cutting plane.

Various shape of bridges such as straight, curved, skewed and inclined bridges are supported for resultant force diagram. In case of curved and skewed bridge, Polygon Select

mode is recommended.

Virtual Section Local Axis

Section for Resultant Force

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Usage of Structure Group / Element Select mode

Step 1. Define structure group for the elements corresponding to one girder, e.g. Girder1 representing girder group 1 in the span1. *In case of Element Select mode, generation of structural group is not required.

Properties > Section for Resultant ForcesStep 2. Select Mode as Structure Group/Element Select. Step 3. Enter No. of Division.Step 4. (Optional) Specify the virtual section’s local x-axis by clicking at two points in the Model View. Step 5. Select structural group. In case of Element Select model, enter the virtual section name.Step 6. Click [Add] and confirm the list of virtual sections and virtual beams.

2

3

5

4

6

Girder1

Results > Forces > Resultant Force DiagramStep 7. Perform an analysis and go to Resultant Force Diagram.Step 8. Select desired load case/combination and member force components. And then click [Apply] to check diagram.Step 9. Click […] button to display resultant force table.

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9

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Usage of Polygon Select mode

Properties > Section for Resultant ForcesStep 1. Select Mode as Polygon Select. Step 2. Click the Positions field which will tern the background color to pale green. Then assign the desired node points to define virtual girder section in the Model View.Step 3. (Optional) Specify the virtual section’s local x-axis by clicking at two points in the model view. Step 4. Enter the virtual section name.Step 5. Click [Add] and confirm the virtual section list.Step 6. Repeat step 2 to 5 to create one more virtual section to be j-end of virtual beam.Step 7. Enter the virtual section ID into Define Virtual Beams table. Step 8. Repeat step 2 to 7 for all the desired positions.

6

Results > Forces > Resultant Force DiagramStep 9. Perform an analysis and go to Resultant Force Diagram.Step 10. Select desired load case/combination and member force components. And then click [Apply] to check diagram.Step 911. Click […] button to display resultant force table.

10

2

3

15

4

2

I-end: Virtual

Section ID 1

J-end: Virtual

Section ID 2

7

11

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Concurrent forces for “LM1&3 Multi” and “LM1&3 Multi(Straddling)” moving load cases are now available when Moving Load Code is selected as Eurocode.

In the previous version, concurrent forces were available only for single load model such as LM1, 2, 3, 4, and rail loads. In order to obtain concurrent forces for LM1 & LM3, the

users needed to convert moving load case into static load case using Moving Load Tracer. In the new version, by selecting [View by Max Value Item] in the context menu of Beam

Forces Table, concurrent forces can be checked in the result table without converting them into static loads.

This feature is applicable for Load Model 1 vehicle combined with Load Model 3 or Load Model 3 (UK NA) vehicle.

Analysis > Analysis Control > Moving Load

5. LM1 & LM3 concurrent forces for Eurocode moving load analysis

Load > Moving Load > Vehicles

Results > Result Tables > Beam > Forces > View by Max Value Item

Concurrent Force Table

Moving Load Case

Moving Load Analysis Control

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The user-defined permit truck can be used to simulate special vehicle loads with any wheel arrangement and any amount of wheel loads. Permit vehicle cannot be combined with

other vehicles.

IRC class special vehicle database is available by selecting from the combo-box.

The maximum number of axles for Permit Truck is 100 axles.

Loads > Moving Load > Moving Load Code > India

6. India special vehicles for India moving load analysis

Loads > Moving Load > Vehicles

IRC Class Special Vehicle Moving Load Case

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Plate Stiffness Scale Factor

Plate Stiffness Scale Factor Table

Boundary Change Assignment

7. Stiffness Scale Factor for Plate Element

Properties > Scale Factor > Plate Stiffness Scale Factor

• Apply scale factors to the stiffness of plate elements. In-plane shear and bending stiffness of specific plate elements may be reduced to reflect cracked sections of concrete walls

and slabs. For unstructured meshes, scale factors can be applied to the user-defined direction.

• Applicable analysis types are as follows: Static, Linear Time History, Response Spectrum, Construction Stage and Geometric Nonlinear Analysi

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8. Performing Pushover Analysis only for Selected Pushover Load Cases

Pushover > Perform Pushover Analysis (Select)

• Pushover analysis can now be performed for the selected pushover load cases only. Result Output file will be generated by pushover load cases, so that the pre-performed

pushover load case results will not be deleted when the user performs pushover analysis for the other pushover load cases.

• This feature will be useful when the user wants to perform pushover analysis for a specific pushover load case with changes of number of steps or convergence condition.

Select Pushover Load Case Hinge Status Results Pushover Curve

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Inelastic Hinge Properties

9. Improvements on Inelastic Hinge Properties

Properties > Inelastic Hinge Properties

• In the previous version, inelastic hinge properties were assigned by Section Properties. Also the program was not able to consider different yield strength between i-end and j-end.

In the new version, inelastic hinge properties are assigned by elements and different yield strength of both ends can be considered. Inelastic hinge properties can now be assigned

by Drag & Drop from Works Tree.

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Civil 2015 (V2.1) Release NoteCivil 2015 Pre & Post-Processing

Layout : Defining the basic geometry of a bridge• Girder Type and Modeling Type• Bridge Alignment• Span• Substructure• Boundary Condition

Section : Defining the section and location of deck, bracing and girder• Transverse deck element• Bracing• Girder

Load : Defining the Dead and live Load conditions• Before and after composite dead loads• Live loads

Construction Stage : Defining the detailed construction sequence• Construction stage• Reinforcement of Deck

1. Steel Composite Girder Bridge wizard

Structure > Wizard > Steel Composite Bridge

The Steel Composite Bridge Wizard is to generate 3D finite models with ease in a relatively short time. Straight, curved, and skewed bridges can be modeled with various bracing

conditions and substructure types.

Both of Frame and plate elements can be used for modeling. Loadings and construction sequences can also be defined using the straightforward inputs and intuitive interface of

the wizard

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Different Support Skew and bracing type

Composite Steel Tub model

All PlateDeck as Plate

Deck & Web as Plate

Construction Stage with Deck pouring Sequence

Tapered Girder section

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2. Improvement of Wood-Armer moment calculation In the previous version, Wood-Armer moment calculations were not supported for moving loads, construction stage loads and envelope load combinations. These limitations are

now eliminated. Following moving load codes are supported: AASHTO LRFD, Eurocode and BS Code Moving Loads. Concurrent forces for plate elements are used to calculate

Wood-Armer moments when “Normal + Concurrent Forces/Stresses” option is selected in Moving Load Analysis Control.

In previous versions , Wood-Armer moment could only be calculated for plates in the Global XY plane. This has now been improved to include plates oriented along any general

plane. In order to calculate Wood-Armer moment, reference axes and rebar angles must be defined in Sub-Domain dialog box.

Rebar angles can be freely defined for the rebar Dir. 1 and Dir. 2 separately. Multiple Rebar angle and reference axes can be defined through different sub-domains.

Maximum / minimum Wood-Armer moments due to moving loads are calculated based on the concurrent plate forces, i.e. Mxx, Myy, Mxy for top and bottom rebars in the direction

1 and 2 separately.

Node/Element > Define Sub-Domain

Result Tables > Plate > Force & Stress > Plate Force (W-A Moment)

Reference axes for Wood-Armer

moment calculations

x

y

Sub-Domain for Rebar Direction Definition Wood-Armer Moment Contour and Table

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midas Civil provides design forces in the reinforcement directions for skew

reinforcement according to the Wood-Armer formula. Analysis results provide the

plate forces, i.e. Mxx, Myy, Mxy with reference to element local axes.

The two reinforcement directions can be defined by specifying two angles, alpha

from the reference x-axis and phi as shown in the figure below.

where,

1, 2: reinforcement direction

α: angle between reference x-axis and 1-

reinforcement direction

φ: angle between 1-reinforcement direction and

2-reinforcement direction

Firstly, internal forces (mxx, myy, and mxy) are transformed into the a-b coordinate

system.

Then, Wood-Armer moments are calculated as follows:

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Local Axis for Post-processing

Related result functions

Plate Forces/Moments

Plane-Stress/Plate Stresses

Plane Strain Stresses

Axisymmetric Stresses

3. Changing Plate Local Axis

Results > Local Axis

• Plate local axis for checking results can be aligned with reference to global axis or cylindrical axis (±X, ±Y, ±Z, ±R, ±TH). The user can directly specify the reference vector for

the local axis direction of plate elements.

• In the previous version, plate stresses/forces were not able to be plotted according to the cylindrical axis. Also plate local axis could not be freely aligned to the desired direction

due to the limitation that element local x-axis must be parallel to the element edge line. In the new version, the user can define the local axis for post processing regardless of plate

edge line.

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This function will enable the user to define local coordinate system for selected nodes to the vertical direction of reference line. Reference line can be defined using two points or

one points with GCS axis.

This function will be extremely useful to align the node local axis to the bearing direction in the curved bridge.

Boundary > Node Local Axis

4. Node Local Axis with respect to Reference Line

xyz

xyz

Sub-Domain for Rebar Direction Definition

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5. Vehicle Database of the US DOTs for Load Rating Assessment

Load > Moving Load > Vehicles

Vehicle database of AASHTO and following DOTs are implemented for load rating. Illinois, Iowa, Louisiana, Missouri, Ohio, Rhode island, Virginia and Wisconsin.

Lane type legal loads are implemented based on Manual for Bridge Evaluation and the provision to find maximum negative moments and reactions at interior supports for the conti

nuous girders are implemented as per the rating manual of each DOTs.

DOT Type Number of vehicles

- AASHTO 5

Illinois ILDOT 12

Iowa IADOT 4

Louisiana LADOT 12

Missouri MoDOT 8

Ohio ODOT 4

Rhode island RIDOT 7

Virginia VADOT 4

Wisconsin WIDOT 1

Two design trucks loaded for maximum negative moment at the first pier

ILDOT Legal load Type 3S2 56T

ILDOT Legal load

Load > Moving Load > Moving Load Code > AASHTO LRFD

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TXDOT

Boxbeam Type

ODOT

WF TypeVADOT

PCBT Type

MoDOT

Nu Type

6. PSC DB Sections of the US DOTs

Properties > Section > Section Properties

The standard sections of several DOTs are implemented in the PSC Value sections under USA Code option. Those DOTs are Iowa DOT, Illinois DOT, Massachusetts DOT,

Louisiana DOT, Ohio DOT, Rhode Island DOT, Texas DOT, and Wisconsin DOT

The user can manually specify the section dimensions by selecting one of the sections in the built-in database for the AASHTO and several DOT standard sections in PSC I

Sections. Those DOTs are: Caltrans, Iowa DOT, Missouri DOT, Ohio DOT, Texas DOT, Virginia DOT, and Wisconsin DOT.

Number of PSC I

sections

Number of PSC-Value Sections

AASHTO 6

IADOT 4 4

ILDOT - 12

LADOT - 7

MassDOT - 85

MoDOT 5 9

ODOT 7 12

RIDOT - 25

TXDOT 7 28

VADOT 9 -

WIDOT 2 5

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7. Auto-generation of Tendon Profiles for Precast Girders

Structure > PSC Bridge > Tendon Template

• Auto-generate tendon profiles in the standard precast sections of AASHTO and the US DOTs by using Tendon Template feature. The Auto Generation function newly provides the

tendon databases for the AASHTO PSC I sections, PSC Value DB - USA code sections.

The Auto Generation function can be used with not only the standard sections in the above table but also any other section regardless of its source and type.

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Steel box and I-girder with longitudinal stiffener can now be defined in Steel Girder tab. Flat, T, and U-rib shape stiffeners are supported. The user can select an option whether the

longitudinal stiffeners will be included in section stiffness calculation or not.

Both symmetrical and unsymmetrical cross sections are supported.

Design check is supported as per Russian SNiP/SP codes.

Properties > Section Properties

8. Orthotropic Deck Plate with Stiffeners

Steel Box Girder Steel I Girder

Unsymmetrical Shape of Box Girder Unsymmetrical Shape of I-Girder

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Functions Revit <> Civil

Linear

Elements

Structural Column <>

Beam <>

Brace <>

Curved Beam >

Beam System >

Truss >

Planar

Elements

Foundation Slab <>

Structural Floor <>

Structural Wall <>

Wall Opening & Window >

Door >

Vertical or Shaft Opening >

Boundary

Offset >

Rigid Link >

Cross-Section Rotation >

End Release >

Isolated Foundation Support >

Point Boundary Condition >

Line Boundary Condition >

Wall Foundation >

Area Boundary Condition >

Load

Load Nature >

Load Case >

Load Combination >

Hosted Point Load >

Hosted Line Load >

Hosted Area Load >

Other

Parameters

Material <>

Level >

Send Model to midas Civil

Revit 2015 Civil 2015

9. Revit 2015 Interface

• Using Midas Link for Revit Structure, direct data transfer between midas Civil and Revit 2015 is available for Building Information Modeling (BIM) workflow. Midas Link for Revit

Structure enables us to directly transfer a Revit model data to midas Civil, and delivery back to the Revit model file. It is provided as an Add-In module in Revit Structure and midas

Civil text file (*.mct) is used for the roundtrip.

File > Import > MIDAS/Civil MCT File

File > Export > MIDAS/Civil MCT File

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Tekla Structure v20

Civil 2015

Category Features Tekla <> Civil

MATERIAL

concrete <>

steel <>

pre cast - wood and other types <>

Material user defined <>

ELEMENT TYPE/

ROTATIONS

vertical column <>

inclined column <>

straight beam <>

curved beam >

Slab <>

vertical panel >

2D ELEMENTS Concrete panels and slab <>

BOUNDARY CONDITIONS

support >

beam end release <>

section offset >

STATIC LOAD

self weigth >

linear load

(uniform or trapezoidal)<>

MERGE OPTION

new element <>

new element that

divide other elements<>

topology changes <>

10. Tekla Structure v20 Interface

File > Import > MIDAS/Civil MCT File

File > Export > MIDAS/Civil MCT File

• Tekla Structures interface is a tool provided to speed up the entire modeling, analysis, and design procedure of a structure by direct data transfer with midas Civil. Data transfer is

limited to structural elements. Tekla Structure interface enables us to directly transfer a Tekla model data to midas Civil, and delivery back to the Tekla model file. midas Civil text

file (*.mct) is used for the roundtrip.

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Assign Floor Loads

11. Assigning Floor Loads to the Area surrounded by Plate Elements

Load > Static Load > Assign Floor Loads

• Floor Load can be applied to the area surrounded by plate elements. In the previous version, floor load was applicable to the area surrounded by beam elements only.

Release Note4 / 29 Civil 2015 Analysis & Design Civil 2015 (V2.1) Release Note Warping normal stresses, fw Bi-moment, df*Mfy Warping shear stresses, τw Flange shears, Vf Section Data

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