release date : july 2017 product ver. : civil 2018...

DESIGN OF CIVIL STRUCTURES I 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 Note Release Date : July 2017

Product Ver. : Civil 2018 (v1.1)

Enhancements

Analysis & Design 3

1) Plate Beam and Plate Column Design as per AASHTO LRFD12

2) Implementation of Plate Concurrent Forces for Moving Load & Settlement analysis

3) Addition of Concrete damaged plasticity model

4) Addition of Romania seismic code (P100-1, 2013)

5) Addition of South African Moving Load

6) Accelerating, breaking and centrifugal force in Moving Load (Eurocode and BS code)

7) Improvement on Moving Load Tracer – ψ factors (Eurocode)

8) Improvement on Detailed Report for BD21/01 Live Loading (BS Code)

9) Addition of SV-TT vehicle and improvement on wheel spacing as per BD 86/11

10) Time History Analysis of the model with Seismic Control Device

11) Improvement on Settlement & Specified Displacement Constraints

12) Auto Generation of Load Combinations as per IRC 6:2016

Pre & Post-Processing

1) Improvement on modification of Plate Local Axis in Pre-Processor mode

2) Improvement on GTS NX - Civil Link

3) Addition of Russia DB Sections for PSC Value Type

4) Concrete Nonlinear Material Properties as per IRC112 in midas GSD

17

Appendix : Time History Analysis of the model with Seismic Control Device

3

Civil 2018 (v1.1) Release Note Civil 2018 Analysis & Design

1. Plate Beam and Plate Column (1D) Design Method

Plate elements can now be designed with the same method of designing conventional 1D elements such as Beam or Column as per AASHTO-LRFD12.

The plate design is performed for defined sub-domain. Member Type are chosen according to the purpose of the design. (e.g. Plate Beam (1D) : Slab Design and Plate

Column (1D) : Abutment / Sidewall Design).

Rebar Direction for the main rebar and distribution rebar can be defined using Local Coordinate System, UCS or Reference Axis.

Define Domain Define Sub-Domain

* Note : This feature is used for the calculation of Wood-Armer moment of specific direction. This will be fixed to default for Plate Design (Dir.1 = 0 deg, Dir.2 = 90 deg).

Node/Element > Elements > Define Sub-Domain

If Reference Axis is selected

4


1. Plate Beam and Plate Column (1D) Design Method

The results of plate design can be checked in table format and also both Graphic and Detail report can be outputted.

Positive/Negative Bending moment capacity, shear capacity and crack checks can be performed and the detail results can be obtained from this function.

The main target of this function is culvert and abutment. Axial force is not critical when we are designing culvert or abutment. Therefore this feature does not consider

the benefit of axial force in calculation of flexural strength. However the calculation of axial resistance is provided in checking mode.

Top and Bottom rebar data can be inputted separately for multiple locations.

Rebar can be inputted using either Number or CTC method.

The amount of rebar (As) is shown directly.

Graphic Report Detail Report

Design > RC Design > Plate Beam/Column

5


2. Plate concurrent forces for Moving Load & Settlement analysis

Concurrent forces for moving load & settlement analysis are now available for following codes:

[AASHTO Standard, AASHTO LRFD, AASHTO LRFD (PENNDOT), Canada, BS, EUROCODE, Australia, Poland, Japanese, Taiwanese and Korean].

In the previous version, concurrent forces were available only for beam elements. In order to obtain concurrent forces for plate elements, 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 Plate Forces Table,

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

Results > Results Tables > Plate > Force & Stress > Plate Force(UL:Local&UCS) > Right-click > View by Max Value Item

View by Max Value Item

Analysis Control

6


3. Concrete damaged plasticity model

It is possible to describe the following behavioral characteristics by using Concrete damaged plasticity model.

• Application of different yield strengths in both tension and compression.

• Degradation effect of different elastic strengths in both tension and compression.

• Stiffness restoration effect under cyclic loading.

Properties > Plastic > Plastic Material

Strain-Yield Stress Curve for Compression Behavior

Strain-Yield Stress Curve for Tensile Behavior

Define of Plastic Material with Concrete-Damage Model

Input of Plasticity Material in Material Data

1

2

3 4

7


Analysis Result of the model with Cyclic Loading

Loading pattern for cyclic loading

Input

Stress vs. strain in the cyclic loading

3. Concrete damaged plasticity model

8


4. Generation of Seismic Loads as per Romanian Code (P100-1, 2013)

It is now possible to automatically generate static seismic load and response spectrum as per P100-1.

Static Seismic Load Response Spectrum

Type of Response Spectrum

- Horizontal Elastic Spectrum

- Vertical Elastic Spectrum

- Horizontal Design Spectrum

- Vertical Design Spectrum

Load > Dynamic Loads > Response Spectrum Data > RS Functions

9


5. South African Moving Load TMH 7: Part 1&2 provide very specific guidelines for moving load applications, especially based on the influence line theory.

NA load is applied as nominal distributed lane load and nominal axle load. The loaded length increment for NA vehicle could be controlled by the user for faster or

more accurate analysis.

NB24 and NB36 vehicles as well as NC vehicle with width provisions of 3m to 5m and an option whether to consider the relieving effects or not is also introduced.

Besides the standard vehicle, user defined vehicles could also be defined by editing the standard vehicles, or consider a completely different vehicle load by means of a

Permit truck.

Provision for moving load combination as per the code as well as for special bridges (like multi-level) are implemented and concurrent reactions & forces could also be

obtained.

Load > Load Type > Moving Load > Moving Load Code > South Africa

10


6. Export Centrifugal, Acceleration & Braking forces (EC & BS)

It is possible to export coincidental centrifugal, acceleration & braking forces according to the Eurocode and British Standards (BD 21/01 & BD 86/11).

It is possible to import vertical, centrifugal (C), acceleration ( Longitudinal – AA & Transverse – AL) and braking ( axial – BA & lateral – BL) as different static load cases.

Results > Moving Load > Moving Tracer

Acceleration Braking

EN 1991-2 4.4.2

UK NA EN 1991-2 NA.2.18

EN 1991-1 6.5.3

BD21 Centrifugal Effects

BD86 Centrifugal Effects

BD86 Longitudinal Loading

Provided design codes

Centrifugal Export Dialog for Eurocode MCT Command Shell

11


7. Option to view Eurocode Live Loading with or without ψ factors applied

Visualization option in Results > Moving Tracer enables to show Eurocode vehicle live loading with or without applied ψ factors.

This option is applicable for all relevant Standard and User Defined vehicles under the Eurocode Moving Load Code.

Ignore ψ Factor option must be checked off in the Moving Load Case for the option to take effect.


Example Load Model 1 without ψ factors Example Load Model 1 with ψ factors

* Note : The option will only be available for Moving Load Cases with Ignore Psi Factor checked off. This option to view ψ factors will NOT affect the analysis results

(including exported results using Write Min/Max Load to File) which will include the ψ factors.

12


8. Detailed Results of HA Lane Factors for BD 21/01 Live Loading

It is now possible to export detailed *.txt file of Loaded Length, Lane Factor, Adjustment Factor, Reduction Factor and HA Lane Factor as defined in BD 21/01 for Movi

ng Load Cases.


Detail Result option for Moving Tracer results HA Lane Factor calculated for each loaded

lane of a moving load case

Extracts from BD 21/01

13


9. Addition of SV-TT Vehicle and Correction of Wheel Spacing According to BD 86/11

Previously wheel spacing of SV, SV-Train, and SOV vehicles were modelled by 4 equidistance wheels.

In the new version, SV-TT vehicle has been added along with the corrected wheel spacing of all vehicles as defined in BD 86/11

Load > Moving Load Code > BS > Vehicles > BD86/11 Special Load

Previous Application of SV80 Current Application of SV100

Current Application of SV TT Extract from BD 86/11 of SV TT

14


10. Time History Analysis of the Model with Seismic Control Device

It is possible to define the general link properties for seismic Control Device.

We can see the smart graph for general link or seismic devices.

The following procedure is for setting up and Display the analysis results for the seismic Control Device.

Boundary > Link > General Link > Seismic Device Properties

1 2 3

4

Click ‘Seismic Device Properties~’ Input Parameters for Seismic Device Properties Define General Link Property by Seismic Device

Display for Seismic Devices Graph

Please refer to the appendix for details.

15


11. Improve method of Settlement & Specified Displacement of Supports constraints In the previous version, when settlement load cases or specified displacement load were applied to some nodes, the corresponding nodes behaved like fixed support

even for other load cases that did not contain specified displacements. In Civil 2018 (v1.1), only the nodes to which specified displacement load case or settlement load

case are applied will behave like fixed support.

Specified Displacement

Load Case 1 : -0.5m

Specified Displacement

Load Case 2 : -0.5m

In the previous version In the new version

Load Case 1

Load Case 2

Load Case 1

Load Case 2

Load > Static Loads > Structure Loads/Masses > Specified Displacements of Supports Load > Settlement/Misc. > Settlement Analysis Data > Settlement Load Cases

16


12. Auto Generation of Load Combinations – IRC 6: 2016

Previously Auto-generation of load combinations were with respect to IRC 6: 2014. In the new version, auto-generation of load combinations for verification of Structural Str

ength and Serviceability Limit State are updated with respect to latest IRC 6: 2016

Results > Load Combination > Auto Generation > IRC :6 LSD

Selecting IRC 6: LSD for Auto Load Combinations ULS and SLS Load Combinations

17

Civil 2018 (v1.1) Release Note Civil 2018 Pre & Post-Processing

1. Plate Local Axis modification in pre-processing mode

The Orientation option is now activated to change a local axis of ‘Plate’ and ‘Plane Stress’ element type.

Previously, plate local axis can be modified in post-processing mode using ‘Plate Local Axis in Results tab. This function is no longer available since new feature can re

place the previous feature.

When creating Elements

We can define a orientation by ‘Beta Angle’ or ‘Ref. Vector’

When changing Element Parameters

Display and Table for Local Axis of Plate

Beta Angle : 30

Beta Angle : 60

The modification is possible by the change of the B-angle in table

Node/Element > Elements > Create Elements > Orientation Node/Element > Change Parameters > Element Local Axis

18


[Export] Reactions & Displacements

[Import] Nodal Loads &

Prescribed Displacements

2. Import & Export of Nodal Results (GTS NX)

This feature allows to import and export the nodal results for nodes with defined constraints.

For exporting feature, users can opt to export results at all constraint locations or at selected constraint locations. Additionally, users can select the analysis set, step

(construction stage), result type (reaction or displacement), and result component for output.

The development allows users to import nodal results from both midas Gen or Civil.

Reactions will be imported as Nodal Forces (FX, FY, FZ) and Moments (MX, MY, MZ) and Displacements will be imported as Prescribed Displacement (Tx, Ty, Tz)

excluding rotation.

Home > Import/Export > Nodal Results (for GTS)…

Export results in .txt format

Export Nodal Results options

Analysis Results from Gen/Civil Analysis Results from GTS NX

19


3. Russia DB Sections for PSC Value

Properties > Section > Section Properties

Following section database of PSC Value type has been newly added: Model project "SERIES 3.503.1-81 ISSUE 7-1".

These sections are applicable for PSC composite girder design as per SP 35.13330.2011.

20


3. Russia DB Sections for PSC Value

21


4. Concrete Nonlinear Material Properties as per IRC112 in midas GSD

midas GSD is now updated to include material models as per IRC 112.

Scope of GSD is as follows:

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

Hinge Export from GSD

Curvilinear Model

Tools > General Section Designer

Parabola-rectangle Model

22

Civil 2018 (v1.1) Release Note Civil 2018 Appendix

1. Viscous / Oil damper

As a damper type, you can set Single dashpot model, Kelvin (Voigt) model, Maxwell type.

As a dashpot type, it is possible to set linear elastic type and Elastic Bilinear and Exponential Function type.

Boundary > Link > General Link > Seismic Device Properties > Viscous / Oil damper

23


1. Viscous / Oil damper (continued)


Damper type

Single dashpot model

Kelvin(Voigt) model

Maxwell type

Linear elastic type

Bilinear elastic type

Dashpot Type

24




-0.6 -0.4 -0.2 0 0.2 0.4 0.6

Deform(m)

-300

-200

-100

0

100

200

300

Force(N

)

Single Dashpot Linear Model

MIDAS

SNAP

Gen

A-Software (Japan)

Single Dashpot - linear elastic type

• Comparison with other products

Test model

Input Seismic Vibration

M = 51.0204 N/g ks = 1000 N/m Cd = 100 Nsec/m

c

M

ks d

F

Comparison of history graph

25




-0.3 -0.2 -0.1 0 0.1 0.2 0.3

Deform(m)

-300

-200

-100

0

100

200

300

Force(N

)

Kelvin BilinearModel

MIDAS

SNAP

Gen

A-Software (Japan)

M = 51.0204 N/g ks = 1000 N/m kd = 1000 N/m Cd = 100 Nsec/m p1 = 50 N a1 = 0.001

c

M

ks kd

d

F

Kelvin(Voigt) Model－ Bilinear elastic


Test model



26




-0.8 -0.4 0 0.4 0.8

Deform(m)

-200

-100

0

100

200

Force(N

)

Maxwell BilinearModel

MIDAS

SNAP

Gen

A-Software (Japan) kd

c

M

ks

d

F

M = 51.0204 N/g ks = 1000 N/m kd = 1000 N/m Cd = 100 Nsec/m p1 = 150 N a1 = 0.001


Maxwell type － Bilinear elastic

Test model



27


2. Viscoelastic damper

The function of the viscoelastic damper was added in the characteristics of the seismic damping device.

As an analysis model, users can set up three element models and a Kelvin (Voight) model.

Boundary > Link > General Link > Seismic Device Properties > Viscoelastic damper

Kelvin(Voight) Model

Three element Model

Viscoelastic material properties ：SUMITOMO GR100・SUMITOMO SR05・ SUMITOMO GR400・CST series (Japan)

Viscoelastic material properties ：3M ISD111・3M ISD111H (Japan)

28


2. Viscoelastic damper (continued)


SUMITOMO GR100(VS1 model) - Total Components（ Elastic-plastic element + elastic element + viscous element(Voight)）

m

k

c

u

gu

m

Mass = 5102.04 N/g Elastic Stiffness = 10000 N/m Undamped System

A-Software (Japan)


Test model



29




SUMITOMO GR400(VS4 model) - Total Components（ Elastic-plastic element + elastic element + viscous element (Voight + Maxwell)）

m

k

c

u

gu

m



Test model



A-Software (Japan)

30




SUMITOMO GR400(VS4 model) - Total Components（ Elastic-plastic element + elastic element + viscous element (Voight + Maxwell)）

• Comparison with other products (Comparison of history graph)

Elastic-plastic element

A-Software (Japan)

Elastic element

Viscous element （Voight）

A-Software (Japan)

Viscous element （Maxwell）

A-Software (Japan) A-Software (Japan)

31


3. Steel Dampers_Bracing type / Stud type

The function of the Steel damper was added in the characteristics of the seismic damping device.

In the brace type, users can set the Hysteresis Properties of bilinear.

In the Column type, the Hysteresis Properties of the low yielding strength steel model (LY 2, LY 3) can be set.

Boundary > Link > General Link > Seismic Device Properties > Steel damper

32


3. Steel Dampers_Bracing type / Stud type (continued)


Brace type (JFE Civil Co., Ltd.)

• Double steel tube for buckling prevention

Clevis (left screw） Stiffening tube Clevis (right screw)

Base (Left Screw) Base (right Screw) Axial force tube(Filled with concrete)

(Pin Junction Type)

Joint plate Stiffening tube

end plate

Joint plate

end plate

(High Strength Bolt Joint Type)

• Hysteresis Properties

Steel Isotropic-Kinematic model ／Bilinear

Degrading Model ／Bilinear

Axial force tube (Filled with concrete)

33




Stud type (JFE Civil Co., Ltd.)

Stiffening stiffener

2000

~ 3

000

600

Low yield strength Steel

• Shape of Stud type • Hysteresis Properties （low yielding strength steel model (LY2, LY3)）

34




Degrading Model／Bilinear

m

k

c

u

gu

m


-1.2 -0.8 -0.4 0 0.4 0.8 1.2

Deform(m)

-150

-100

-50

0

50

100

150

Force(N

)

STEEL DAMPERBilinear Model

MIDAS

SNAP

A-Software (Japan)


Test model



35




Steel Isotropic-Kinematic model ／Bilinear

m

k

c

u

gu

m



Test model



-2 -1.5 -1 -0.5 0 0.5 1 1.5 2

Deform(m)

-1000

-800

-600

-400

-200

0

200

400

600

800

1000

Force(N

)

HYST. DAMPERIK2 Model

MIDAS

SNAP

A-Software (Japan)

36




Low yielding strength steel model (JFE LY3)／Trilinear

m

k

c

u

gu

m



Test model



-0.8 -0.4 0 0.4 0.8

Deform(m)

-200

-100

0

100

200

Force(N

)

HYST. DAMPERLY3 Model

MIDAS

SNAP

A-Software (Japan)

37


4. Hysteretic Isolator for earthquake (MSS)

Out of the characteristics of the isolation damping device, the function of Hysteretic Isolator for vibration prevention was added.

In the multi shear spring model, you can set the Hysteresis Properties as bilinear or trilinear type.

Boundary > Link > General Link > Seismic Device Properties > Hysteretic Isolator (MSS)

38


4. Hysteretic Isolator for earthquake (MSS) (continued)


Column (Linear element)

Z

y

x

Multiple shear-springs (MSS)

ΔQy

y

ΔQx

x

qi

1 4

3 i

f

f0

d0

ak0

k1

d

Y i Yq k u

1

cos

YY n

i

i

Qq

2

1

cosn

x i i

i

K k


Hysteresis Properties

Multi-shear spring (MSS) model

Normal Model ／Trilinear

Hysteresis Properties Of Multi-shear spring

Relationship between shear strength and deformation of spring

Stiffness of spring

Yield strength of spring

39





m

k

c

u

gu

m


-1.5 -1 -0.5 0 0.5 1 1.5

Deform(m)

-150

-100

-50

0

50

100

150

Force(N

)

HYST. DAMPERBilinear Model

(MSS=12)MIDAS

SNAP

A-Software (Japan)

- Num. of MSS : 12



Comparison of history graph Test model

40




Normal Model ／Trilinear

m

k

c

u

gu

m


- Num. of MSS : 8




-1.2 -0.8 -0.4 0 0.4 0.8 1.2

Deform(m)

-150

-100

-50

0

50

100

150

Force(N

)

HYST. DAMPERTrilinear Model

(MSS=8)MIDAS

SNAP

A-Software (Japan)

41


5. Isolator (MSS)

Out of the characteristics of the isolation damping device, the function of Isolator for vibration prevention was added.

As seismic isolation support material, there are Lead Rubber Bearing(LRB), Natural Rubber Bearing (NRB), and Sliding Bearing Type.

Boundary > Link > General Link > Seismic Device Properties > Isolator (MSS)

Lead Rubber Bearing(LRB)

Horizontal performance

Vertical performance


42


5. Isolator (MSS) (continued)


Lead Rubber Bearing(LRB)

[Rule 1] : Elastic Range（） e e

Kd

• History Graph

e : Elastic Limit Strain

0.0 0.1, 0.05 e eDefault

0e

e

FK

0.43 0.410.7792 2.0354S S

e k e p e q e dF K Q

[Rule 2, 3]

p d

S S S

K p Q dF C K C Q

p

u d

S

d K p

K K

K C K

: Ratio of Yield Stiffness and Unloading Stiffness (=10∼15)

43




Natural Rubber Bearing (NRB)



44






Sliding Bearing

45





m

k

c

u

gu

m


- Axial Component（Num. of MSS : 8）

-2E-007 -1E-007 0 1E-007 2E-007 3E-007

Deform(m)

-250

-200

-150

-100

-50

0

50

Force(N

)

ISOLATORNRB Model

Axial Comp.MIDAS

SNAP

A-Software (Japan)




46





m

k

c

u

gu

m


- Shear Component（Num. of MSS : 8）




-0.0004 -0.0002 0 0.0002 0.0004

Deform(m)

-250

-200

-150

-100

-50

0

50

100

150

200

250

Force(N

)

ISOLATORNRB Model

Shear Comp.MIDAS

SNAP

A-Software (Japan)

47




Lead Rubber Bearing (NRB)

m

k

c

u

gu

m






-0.002 -0.001 0 0.001 0.002

Deform(m)

-2000000

-1500000

-1000000

-500000

0

500000

Force(N

)

ISOLATORLRB Model

Axial Comp.MIDAS

SNAP

A-Software (Japan)

48




Lead Rubber Bearing (NRB)

m

k

c

u

gu

m






-0.3 -0.2 -0.1 0 0.1 0.2

Deform(m)

-300000

-200000

-100000

0

100000

200000

Force(N

)

ISOLATORLRB Model

Shear Comp.MIDAS

SNAP

A-Software (Japan)

49




Elastic Sliding Bearing (SLD)

m

k

c

u

gu

m






-0.002 -0.001 0 0.001 0.002 0.003

Deform(m)

-1600000

-1200000

-800000

-400000

0

400000

Force(N

)

ISOLATORSLD Model

Axial Comp.MIDAS

SNAP

A-Software (Japan)

50




Elastic Sliding Bearing (SLD)

m

k

c

u

gu

m






-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1

Deform(m)

-120

-80

-40

0

40

80

120

Force(N

)

ISOLATORSDL Model

Shear Comp.MIDAS

SNAP

A-Software (Japan)

51


6. Seismic Control Device DB Manager

A Program for Seismic Control Device DB (Seismic Control Device DB manager) was installed.

This program has the product group of each maker of Seismic Control Device.

The users can register a new DB using the "user definition" function.

From Seismic Control Device DB, you can set the properties of the product directly in the midas Civil.

Boundary > Link > General Link > Seismic Device Properties > Seismic Control Device DB Manager

In Release version, only DB for viscoelastic damper is provided.

Not supported

52


7. Improvement of functions related to time history analysis

‘Smart Graph’ has been added as a confirmation for results of time history analysis.

When ‘Smart Graph’ compared with existing graph function, ‘smart graph’ can visually confirm analysis result with easier operation.

In Smart Graph, various functions such as ‘Energy’ output, animation, display option(table, Background Graph, Symbol) etc. can be used.

In Smart Graph, analysis results of general-purpose link elements and Seismic Control Device can be confirmed.

(The output of nonlinear results of each member will be installed in the second half ）

Result > Time History > T.H. Result > Time History Smart Graph

53


7. Improvement of functions related to dynamic analysis (continued)


Time history Smart graph

Energy output (Energy dissipation amount)

54


7. Improvement of functions related to dynamic analysis (continued)


Time history response analysis smart graph

Animation & Display Option (table, background graph and symbol)

release date : july 2017 product ver. : civil 2018...

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