Release notes IDEA concrete and prestressing version 6.0

page 1/16 Release notes Concrete, Prestressing v6

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Release notes IDEA StatiCa Concrete and Prestressing - v6

Summary – version 6:

New functionality was added mainly in RCS

Prestressing - improving an unpleasant or difficult situation (editing, presentation, …)

Partial improvements in BIM

Main functionality – version 6:

RCS

o Design of necessary reinforcement

o Improvements of navigator in IDEA StatiCa RCS

o Optimization of angle θ is used for the check of shear, torsion, and the

interaction

o Design of slabs of liquid retaining and containment structures according to EN

1992-3

o Crack width for members with large concrete cover according to French and

German Annexes

o Slab on trapezoidal steel sheet

o New reinforcement templates for one-way slabs

o M-N-rotation diagram

o User preferences for css dimensions

Prestressing

o New way of calculation of equivalent load

o Multiple operations with tendons

o Alternative presentation of the moment of resistance of prestressed section

BIM

o Import of selected part of the structure into BIM

o User-defined internal forces

UI – Units, New graphic design of IDEA StatiCa



Content User Environment...................................................................................................................3

New graphic design of IDEA StatiCa applications ..............................................................3

Units ...................................................................................................................................3

Improvements of navigator in IDEA StatiCa RCS...............................................................3

User preferences for css dimensions ...................................................................................5

Improvements in Concrete and Prestressing ............................................................................6

Optimization of angle θ ......................................................................................................6

Crack width for members with large concrete cover ............................................................7

Improvements in Concrete ......................................................................................................7

Slab on trapezoidal steel sheet ............................................................................................7

New reinforcement templates for one-way slabs .................................................................8

Design of necessary reinforcement......................................................................................9

Liquid retaining and containment structures ...................................................................... 10

M-N-rotation diagram ....................................................................................................... 11

Improvements in Prestressing ............................................................................................... 12

New way of calculation of equivalent load ........................................................................ 12

Multiple operations with tendons ...................................................................................... 13

Alternative presentation of the moment of resistance of prestressed section ...................... 14

BIM ...................................................................................................................................... 15

Import of selected part of the structure into BIM ............................................................... 15

User-defined internal forces .............................................................................................. 16



User Environment

New graphic design of IDEA StatiCa applications

Units

Setting of type of unit, and number of digits behind the decimal separator, imperial units

Improvements of navigator in IDEA StatiCa RCS

Main groups:

Project Data

Design

Checks

Report

The changes were motivated by introduction of new functionality: the

design of necessary reinforcement (see below). All items, which are needed

for the design of the reinforcement, have to be defined in advance.

Therefore the items of the navigator follow this logic. It corresponds with

the workflow of engineer at the same time. The items, which are known

from preliminary design of cross-sectional shape and from structural

analysis, go first.

The lists of all entities (Sections, Design Members, and Reinforced Cross-Sections) contained

in the project are localized into group Project Data of the navigator. Individual items are

clearly listed in main window. It improves the understandability and the overview.



List of “Sections” along the length of all Design Members, which occur in the project:

Data of “Design Members” are removed from the navigator, which brought more logic

arrangement and simplification. Design members can be added, edited, and deleted, and the

status of the assessment is shown for individual members.

The entity “Reinforced Cross-Section” joints a property of cross-sectional shape and its

reinforcement. Linking those two properties together we obtain the representatives, which are

then used for individual Sections along the length of Design Members. The list of Reinforced

Cross-Sections shows these representatives.



User preferences for css dimensions

User preferences for dimensions of cross-section can be set for the checks of shear, torsion,

crack width, and deflection in new group User Settings. These User Settings replace and

extend old functionality known as Set for shear and Set for torsion.



Improvements in Concrete and Prestressing

Optimization of angle θ

Optimization of angle θ is used for the check of strength in shear, torsion, and the interaction

of all internal forces. The objective of the project was to find such angle θ, which would

enable optimum use of all materials in the cross-section – concrete in compression diagonal,

shear reinforcement (stirrups and bent-up bars), and longitudinal reinforcement. Final goal is

to improve the economy of the design compare to common approach when the user specifies

the angle θ directly.



Crack width for members with large concrete cover

Alternative methods for the calculation of crack width were introduced, specifically

maximum crack spacing sr,max (provision 7.3.4 (3)) can now be taken according to French and

German Annexes. The advantage is that these approaches provide more realistic crack width

for members with large concrete cover.

Improvements in Concrete

Slab on trapezoidal steel sheet

New type of cross-section - slab on corrugated (trapezoidal) steel sheet has been introduced.

Trapezoidal steel sheets are frequently used as simple permanent shuttering floor systems,

especially in building renovation, eventually in industrial buildings. Slabs on trapezoidal steel

sheets are usually continuous, therefore in the section above the support it is necessary to

resist negative bending moments by additional bars.



New reinforcement templates for one-way slabs

The project aims to improve the work with one-way slab in RCS. It is common practice in

building construction that slabs and walls are, with respect to laboriousness, reinforced by

basic reinforcement grid, and consecutively additional reinforcement bars are supplemented in

places that are not sufficiently reinforced. To make the manufacturing of reinforcement cage

simple, the reinforcement is added into the gaps or the bars of basic grid are duplicated.

Additional bars are therefore designed always in multiples of the basic grid.

New reinforcement templates for slab on trapezoidal steel sheet, and the improvements of

existing templates for one-way slabs have been implemented - the possibility to input:

additional reinforcement bars,

shear links.



Design of necessary reinforcement

The objective of the project was to enable fast and precise design of the reinforcement

necessary to comply ULS and SLS conditions, specifically the requirements for strength in

flexure, shear, torsion, interaction and the limitations for crack width.

The design is not limited to necessary areas. Number and diameter of reinforcement bars are

calculated in real-time when selecting reinforcement template.

The amount of shear and longitudinal reinforcement is optimized for all allowable angles θ so

that the weight of the sum of both types of the reinforcement is minimized (calculated for 1 m

of the member). Corresponding force in longitudinal reinforcement is respected in the design.

The reinforcement design can be performed on 1D non-prestressed reinforced members and

one-way slabs. The design respects some detailing rules (number of bars, distances, …). New

reinforcement templates have been introduced for one-way slabs with additional bars and

links.



Liquid retaining and containment structures

The calculation of crack width for one-way and two-way slabs of liquid retaining and

containment structures according to EN 1992-3 has been implemented

Classification of tightness

Check of depth of compression zone



M-N-rotation diagram

M-N-rotation diagram was introduced as a new functionality into standard EN an all annexes

(so far in NL only). The functionality was extended so that it can be used for the calculation

of properties of plastic hinges in Pushover Method.



Improvements in Prestressing

New way of calculation of equivalent load

The objective of the project was to increase the speed of UI response by reducing the number

of load impulses from the load equivalent to the effects of prestressing. Significant

improvement was achieved by cumulating load impulses from all tendons and distributing

concentrated forces into line load with respect to existing mesh, see the table below.

Number of tendons in the

beam

Reduction of number of

impulses

Speed increase of UI

1 no reduction no increase

10 5 times 2 times

100 20 times 5 times

Considerable speed increase has also been achieved in the structural analysis in the case of

large structure with large amount of tendons.



Multiple operations with tendons

This part of the development aims to improve the input and editing of the tendons. New

functionality has been introduced:

Multiple editing of tendon properties on the selection of tendons

Multiple actions with selection of tendons (deleting, copying, moving, exports)

The user selects the tendons and opens the dialog of properties. All properties, which are

common for tendon selection, will be displayed. Empty editbox appears in case of different

property values. The user can change any property, and changed properties are saved.



Alternative presentation of the moment of resistance of prestressed section

A customer asked for new functionality to present the moment of resistance of prestressed

section in other way than it is currently done (for better understanding).

New form reliability condition can be then written as RpppE MeNM 0

, where the left-hand

side of the equation contains generally the effects of the external load and the primary effects

of the decompression prestressing force and the right-hand side stores the resistance of the

cross-section resulting only from the part of the stress-strain diagram above the level of the

decompression stress according to figure below. In this situation, the primary effects of the

prestressing are considered to be the external force in the cross-section. Moment M0pp =

N0ppep results in the state of decompression.

Vestigial capacity of the prestressing reinforcement

p

p0

ud p

pa

fpd

"vestigial" capacity

Pp



BIM

Import of selected part of the structure into BIM

The aim was to allow the user to define only a part of the structure to import from the AXIS

VM project. This new functionality makes his work well organized and ordered, and the

response of the program is faster. The user can select the items for import including the

groups created by AXIS VM as logic units.



User-defined internal forces

The objective is to enable an effective way of the design of 3D structures imported from

external FEA packages into IDEA StatiCa. Any effect of loads (calculated elsewhere) can

now be imported into IDEA StatiCa in tabular form (excel spreadsheet). Afterwards load

groups are defined, and all specialized features of IDEA StatiCa can be used including detail

and comprehensive sectional design.

Engineering

Release notes IDEA concrete and prestressing version 6.0