Αυστραλός / Πρότυπο της Νέας Ζηλανδίας 4600 για δομές χαλύβδινου σχηματισμού με κρύο, 2018 Εκδοση
Το AS/NZS 4600:2018 module checks cold-formed steel members with the Μέθοδος Άμεσης Δύναμης. It runs in SkyCiv Structural 3D and supports custom restraints along each member.
Για το 2005 edition, βλέπω AS4600 Μέλος σχεδιασμού.
With this module you can:
- Run design checks to AS/NZS 4600:2018 with the Direct Strength Method, συμπεριλαμβανομένου:
- Member pre-qualification
- Axial tension
- Axial compression: section capacity, and member capacity for global, local and distortional buckling
- Bending about both axes: section capacity, and member capacity for lateral-torsional, local and distortional buckling
- Shear along both axes
- Combined bending and shear
- Combined compression and bending
- Combined tension and bending
- Design channels, Z sections, hat sections, back-to-back channels and lipped channel boxes, prismatic or non-prismatic
- Define custom restraints and pseudo-restraints along each member
- Export detailed step-by-step PDF reports
- Ελέγξτε τις παραμέτρους και την είσοδο για κάθε μέλος (Run Designer) to find the most efficient section
Current version support
Ενότητες
- Κανάλι
- Lipped Channel
- Lipped Channel single
- Ενότητα Z
- Lipped Z
- για χρήση με LRFD και τους κατάλληλους παράγοντες ασφαλείας
- Back-to-back Channels
- Back-to-back Lipped Channels
- Lipped Channel Box
Back-to-back lipped channels and lipped channel boxes are supported only by this code. Sections can be prismatic or non-prismatic, and the material must be steel. Sections must not come from the Australian/Steel (250 Βαθμός), Australian/Steel (300 Βαθμός), Australian/Steel (Αγαπητός) or American/AISI databases.
To see this list in the software, open the log and click View supported sections.
Λογισμικό
- SkyCiv Structural 3D
AS / NZS 4600-2018 is also listed in the Κωδικός σχεδίασης dropdown of SkyCiv Beam. This page describes the module in SkyCiv Structural 3D.
Σημείωση
Units must be in Μετρικός to use this design module. In the Model, Άνοιξε Ρυθμίσεις (top bar) > Μονάδες and set the unit system to Μετρικός.
Opening the module
- Solve the model.
- Κάντε κλικ Σχέδιο in the top bar.
- Σε Select a Design Module, επιλέγω Cold-Formed Steel Member.
- Σε Which design code would you like to start?, pick AS / NZS 4600-2018, μετά κάντε κλικ Αρχή.
If a design module is already open, χρήση Αλλαγή ενότητας στο Σχέδιο menu to switch codes.
The design panel opens on the left, with the 3D model on the right. The header shows the code, plus Request Feature και Run Designer. On the right of the tab bar are three buttons:
- the settings (gear) κουμπί, which opens Member Design Settings
- the log button, which opens the Member Design Log
- Ελεγχος, which runs the design check
When the module starts, an alert may tell you that there are important messages. They are shown in the Member Design Log, for example "6 members were loaded with default values", or members that were not imported because their section or material isn’t supported. The log has a View supported sections Σύνδεσμος.
The tabs are Λεπτομέριες, Παράγοντες, Υλικά, Ενότητες, Μέλη, Περιορισμοί, Φορτία και Αποτελέσματα.
Member Design Settings
Click the gear button to open Member Design Settings. It has one option:
- Checks based on geometric axes instead of principal axes: unchecked by default. It affects the capacity of sections that are not symmetric about both axes, such as Z sections.
As the dialog notes, engineering guidance should be used when you change these settings. Κάντε κλικ Αποθηκεύσετε to apply.
Λεπτομέριες
Στο Λεπτομέριες tab you can enter the project details. You don’t have to fill them in, but anything you enter is shown in the Λεπτομέρειες Έργου table of your reports. Project Units shows Μετρικός and can’t be changed here.
Παράγοντες
ο Παράγοντες tab shows the capacity reduction factors:
| Παράγοντας | Περιγραφή | Επιλέξτε είτε Z είτε Y-Axis |
|---|---|---|
| Φντο | Συμπίεση | 0.85 |
| Φσι | Κάμψη | 0.9 |
| ΦΒ | Κουρεύω | 0.9 |
| ΦΤ | Ενταση | 0.9 |
If a member is not pre-qualified (Ρήτρα 1.6.3(ντο)(Εγώ)), Φντο, Φσι and ΦΒ are reduced to 0.8. The factors used for each member are listed in its report under Strength Limit State Factors, with their clause references.
Υλικά
ο Υλικά tab lists the materials used by the designed members, with their Αντοχή διαρροής και Υπέρτατη δύναμη. The table is filled in from the model and can’t be modified here. To change a material, go back to the Model.
Ενότητες
ο Ενότητες tab lists the sections used by the designed members. The section data comes from the model and can’t be modified here.
- Σχέδιο: tick the box to design the members that use this section. The icon in the column header toggles all rows.
- Αναγνωριστικό ενότητας, Ενότητα, Σχήμα, Αναγνωριστικό υλικού και Υλικό: taken from the model.
- DSM: Κάντε κλικ Θέα to see the DSM factors of the section.
ο DSM Factors for Section n dialog shows a sketch of the section with its axes, and the elastic buckling stresses (in MPa) used by the Direct Strength Method:
| Σύμβολο | Buckling stress |
|---|---|
| φάο,μεγάλο,ντο | Τοπικός λυγισμός, συμπίεση |
| φάο,ρε,ντο | Παραμορφωτικός λυγισμός, συμπίεση |
| φάο,μεγάλο,bx | Τοπικός λυγισμός, bending about x |
| φάο,ρε,bx | Παραμορφωτικός λυγισμός, bending about x |
| φάο,μεγάλο,με,- και στο,μεγάλο,με,+ | Τοπικός λυγισμός, bending about y (αρνητικό και θετικό) |
| φάο,ρε,με,- και στο,ρε,με,+ | Παραμορφωτικός λυγισμός, bending about y (αρνητικό και θετικό) |
Any factor that is not provided has its check skipped. For a section that is symmetric about an axis, the positive and negative factors about that axis are not needed. The values can’t be edited here: to change them, μεταβείτε στο Κατασκευαστής ενότητας and launch the Σχέδιο ψυχρής διαμόρφωσης χάλυβα μονάδα μέτρησης.
Μέλη
ο Μέλη tab lists the design members. Each design member is made up of one or more model members.
- Expand Table Width: widens the table.
- Split Selected και Join Selected: split the selected design members, or join them into one design member.
| Στήλη | Περιγραφή |
|---|---|
| Επιλέγω | Ticks the row, for example to split or join members |
| Σχέδιο | Tick to include the member in the design check, untick to leave it out |
| Design Member ID | The ID of the design member |
| Τα μη ορθογώνια φορτία είναι παρόμοια με τα αμφίδρομα φορτία καθώς η ενέργεια προϋποθέτει ότι το φορτίο υποστηρίζεται από όλα τα μέλη του συστήματος | The model member(μικρό) that make up the design member |
| Αναγνωριστικά τμήματος | Ο τομέας(μικρό) of the design member |
| μεγάλο (Μ) | The length of the design member |
| Restraint ID | The restraint set used by the member. Click it to open that restraint in the Περιορισμοί αυτί |
Design Member ID, Τα μη ορθογώνια φορτία είναι παρόμοια με τα αμφίδρομα φορτία καθώς η ενέργεια προϋποθέτει ότι το φορτίο υποστηρίζεται από όλα τα μέλη του συστήματος, Αναγνωριστικά τμήματος και μεγάλο (Μ) come from the model and can’t be changed here. Effective lengths and K factors are not entered on this tab: they come from the Περιορισμοί αυτί.
Περιορισμοί
AS / NZS 4600:2018 supports custom restraints, so you can add your own restraints to be used in the calculations. For a full description, see our documentation on περιορισμοί μέλους.
- Auto Group: gives similar members the same restraint ID.
- Restraint ID: selects the restraint ID to view or edit. Use the down and up arrows to go to the next or previous ID.
- Assign to Member(μικρό): assigns the current restraint ID to members.
- Αντίγραφο: copies the current restraint ID to a new ID.
The restraint table is filled in from the model supports and connections. Για παράδειγμα, a member supported at both ends gets a row at each end.
| Στήλη | Περιγραφή |
|---|---|
| Επιλέγω | Ticks the row, for example to apply a standard restraint to it |
| Θέση | Distance of the restraint from the start of the member |
| Major Compression | 2-key restraint code (F or R) for major-axis flexural buckling |
| Κζ | Effective length factor for the major axis (αυτο από προεπιλογή) |
| Minor Compression | 2-key restraint code (F or R) for minor-axis flexural buckling |
| Κυ | Effective length factor for the minor axis (αυτο από προεπιλογή) |
| Lateral-Torsional | 4-key restraint code (φά, R or S) for lateral-torsional buckling |
| Global Buckling Bracing | Unbraced, Μπλουζα, Κάτω μέρος ή Και τα δυο. If the lateral-torsional restraint fully braces a flange, the global buckling check is skipped for the cases that the bracing covers. Hover over the ℹ icon for details |
| Διαγράφω | Deletes the restraint row |
Για να προσθέσετε ψευδο-περιορισμούς (restraints that are not modelled), enter the spacings in Προσθέστε ψευδο-περιορισμούς με απόσταση(μικρό) και κάντε κλικ Προσθήκη. You can enter a comma separated list (για παράδειγμα 1.5,1.5,1.5), use the multiply operator (4*1.5), or use the < operator to fit as many restraints as possible. Κάντε κλικ Διαγράφω next to Προσθήκη to remove all the pseudo-restraints.
Pseudo-restraints are added as released (RR και RRRR), so they have no effect until you change their codes. Στο παρακάτω παράδειγμα, 4*1.5 adds rows at 1.5, 3 και 4.5 m on a 6 m member, and their Lateral-Torsional code is changed to FFFR.
Below the table are sub-tabs, each with an ΕΝΑ (automatic) badge by default:
- Ενταση: με Default values επί, the defaults are used. Switch it off to enter your own:
- κτ: correction factor for the distribution of forces in a tension member. The default assumes a non-uniform force distribution, per AS/NZS 4600:2018 Ρήτρα 3.2.3.2.
- ΕΝΑν παράγοντας: factor that reduces the gross area to the net area. Η προεπιλογή είναι 0.85, which assumes a bolted connection.
- Major Compression (μεγάλομε, κμε), Minor Compression (μεγάλοκαι, κκαι), Twist Compression (μεγάλοΧ, κΧ), Major Lateral-torsional (μεγάλοσι, κLT, ντοσι) και Minor Lateral-torsional (μεγάλοσι, κLT): από προεπιλογή, Determine from restraints (as defined in the restraints table) is on. Switch it off to enter your own values for the whole member. Κάτω από Standard Restraints, click an icon to apply a standard restraint to the selected rows.
ο Περιορισμοί section of each member report shows the restraints that were used: the user input (θέση, restraint codes, κόχι και κμάτι, top and bottom flange restraint, member rotation and global buckling bracing), the major-axis and minor-axis compression segments, the compression twist segments, the effective lateral-torsional restraints and the segments for each load combination.
Φορτία
ο Φορτία tab lists the load combinations from the model, with their Ονομα και Κριτήρια. Tick Ισχύουν for each load combination you want to include. Serviceability combinations are listed and can be ticked, but no serviceability check is performed.
Αποτελέσματα
Κάντε κλικ Ελεγχος to run the design check. ο Αποτελέσματα tab shows:
- Εμφάνιση αναλογιών σχεδίασης για: chooses which ratios are shown, για παράδειγμα Governing Result, Αποτυχημένα μέλη, or a single check.
- GOVERNING: the highest ratio and its member.
- A toolbar to filter (Ολα), sort, Καταστολή και μετατόπιση της δομής σας Επαναλάβετε, show the table and open the report, περισσότερα έχει Περίληψη button for the summary report.
- ο Αναλογίες σχεδιασμού μελών τραπέζι, με α Κατάσταση (Πέρασμα ή Αποτυγχάνω) και ένα Κανω ΑΝΑΦΟΡΑ icon for each member. Hover over the ℹ icon in a column header to see the clause it refers to.
| Στήλη | Ελεγχος | Ρήτρα |
|---|---|---|
| Π | Αξονικός (τάση ή συμπίεση) | 3.2 ή 7.2.1 |
| ΜΧ | Bending about x | 7.2.2 |
| Μκαι | Bending about y | 7.2.2 |
| Βκαι | Shear along y | 7.2.3 |
| ΒΧ | Shear along x | 7.2.3 |
| CSBΧ | Combined shear and bending, about x | 7.2.3 |
| CSBκαι | Combined shear and bending, about y | 7.2.3 |
| CCB | Combined compression and bending | 7.2.4 |
| CTBΜ | Combined tension and bending, member capacity | 7.2.5(1) |
| CTBμικρό | Combined tension and bending, section capacity | 7.2.5(2) |
In the 3D view, each member is coloured Αποτυγχάνω, Προειδοποίηση ή Πέρασμα and labelled with its governing ratio.
Checks performed
| Ελεγχος | AS / NZS 4600:2018 αναφορά |
|---|---|
| Member pre-qualification (sets Φ) | Ρήτρα 1.6.3 |
| Axial tension, section capacity | Ενότητα 3.2 |
| Axial compression, section capacity | Ενότητα 7.2.1.3 |
| Axial compression, member capacity (παγκόσμια, local and distortional buckling) | Ενότητα 7.2.1 |
| Bending about x and y, section capacity | Ενότητα 7.2.2.3.2 |
| Bending about x and y, member capacity (lateral-torsional, local and distortional buckling), including positive and negative bending about y for singly symmetric sections | Ενότητα 7.2.2.1 |
| Shear along y (ιστός) and along x (φλάντζα) | Ενότητα 7.2.3 |
| Combined bending and shear, about both axes | Εξ. 7.2.3(9) |
| Combined axial compression and bending | Εξ. 7.2.4 |
| Combined axial tension and section bending capacity | Εξ. 7.2.5(2) |
| Combined axial tension and member bending capacity | Εξ. 7.2.5(1) |
The module does not check slenderness limits, εκτροπή (λειτουργικότητα), web crippling or torsion.
Αναφορές
Click the report icon in a member’s Κανω ΑΝΑΦΟΡΑ column to open its design report. It opens in a Design Report for Member #n dialog with Close, Άνοιγμα σε Νέα καρτέλα, Λήψη HTML και Λήψη PDF κουμπιά. The report is titled "AS/NZS 4600-2018 – Direct Strength Method", and contains:
- Λεπτομέρειες Έργου
- Χρησιμότητα: every check with its reference, σύμβολο, description, αναλογία και κατάσταση
- Ενότητες: the dimensions and properties of the section
- Τελικές οριακές καταστάσεις: Προεπιλογή μέλους, Strength Limit State Factors, Member Internal Actions, Member and Restraints, followed by each check step by step
Κάντε κλικ Περίληψη on the Results tab to open the Συνοπτική αναφορά. It lists the project details (including the design code), the strength load combinations with their factors, and the results for all members.
