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AS / NZS 4600:2018 メンバーデザイン

オーストラリア人 / ニュージーランド規格 4600 冷間成形鋼構造用, 2018 版

AS/NZS 4600:2018 module checks cold-formed steel members with the 直接強化法. It runs in SkyCiv Structural 3D and supports custom restraints along each member.

のために 2005 edition, 見る AS4600メンバーの設計.

With this module you can:

  • Run design checks to AS/NZS 4600:2018 with the Direct Strength Method, 含む:
    • 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
  • SkyCivDesignerを実行する (Run Designer) to find the most efficient section

Current version support

セクション

  • チャネル
  • リップドチャンネル
  • Lipped Channel single
  • Zセクション
  • Lipped Z
  • 帽子セクション
  • Back-to-back Channels
  • Back-to-back Lipped Channels
  • リップドチャンネルボックス

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 グレード), Australian/Steel (300 グレード), Australian/Steel (親愛なる) or American/AISI databases.

To see this list in the software, open the log and click View supported sections.

Supported sections for AS/NZS 4600-2018: nine shapes incl. back-to-back and box sections, excluded databases, prismatic or non-prismatic

ソフトウェア

  • SkyCiv構造3D

AS / NZS 4600-2018 is also listed in the デザインコード dropdown of SkyCivビーム. This page describes the module in SkyCiv Structural 3D.

注意

Units must be in メトリック to use this design module. In the Model, 開いた 設定 (top bar) > 単位 and set the unit system to メトリック.

Opening the module

  1. Solve the model.
  2. クリック 設計 in the top bar.
  3. に Select a Design Module, 選ぶ Cold-Formed Steel Member.
  4. に Which design code would you like to start?, pick AS / NZS 4600-2018, 次にクリックします 始める.

Cold-Formed Steel Member Design dialog with the code list scrolled to AS/NZS 4600-2005, AS / NZS 4600-2018 とユーロコード (に 1993-1-3 2006)

If a design module is already open, 使用する モジュールの変更 の中に 設計 menu to switch codes.

The design panel opens on the left, with the 3D model on the right. The header shows the code, プラス Request Feature そして Run Designer. On the right of the tab bar are three buttons:

  • the settings (ギヤ) ボタン, which opens Member Design Settings
  • the log button, which opens the Member Design Log
  • 小切手, 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 リンク.

The tabs are 詳細, 要因, 材料, セクション, 会員, 拘束, 負荷 そして 結果.

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. クリック セーブ 申請する.

詳細

に 詳細 tab you can enter the project details. You don’t have to fill them in, but anything you enter is shown in the プロジェクトの詳細 table of your reports. Project Units ショー メトリック and can’t be changed here.

Details tab for AS/NZS 4600-2018 with Project Units Metric, the tabs Details to Results, and the gear, log and Check buttons

要因

の 要因 tab shows the capacity reduction factors:

要素 説明 デフォルト
ファイC 圧縮 0.85
ファイB 曲げ 0.9
ファイV 剪断 0.9
ファイT テンション 0.9

If a member is not pre-qualified (句 1.6.3(c)(私)), ファイC, ファイB and ΦV 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.

Factors tab with ΦC 0.85, ΦB 0.9, ΦV 0.9 and ΦT 0.9

材料

の 材料 tab lists the materials used by the designed members, with their これを行うと、その材料IDが割り当てられたすべての部材とプレートの材料特性が変更されることに注意してください。 そして これを行うと、その材料IDが割り当てられたすべての部材とプレートの材料特性が変更されることに注意してください。. The table is filled in from the model and can’t be modified here. To change a material, go back to the Model.

Materials tab: ID 1, Cold Formed Steel G450, Yield Strength 450, これを行うと、その材料IDが割り当てられたすべての部材とプレートの材料特性が変更されることに注意してください。 480

セクション

の セクション tab lists the sections used by the designed members. The section data comes from the model and can’t be modified here.

  • 設計: tick the box to design the members that use this section. The icon in the column header toggles all rows.
  • セクションID, セクション, 形状, マテリアルID そして 素材: taken from the model.
  • DSM: クリック 見る to see the DSM factors of the section.

Sections tab with Design ticked for C15024 (Lipped Channel), Z15024 (Lipped Z) and C20019 (リップドチャンネル), each with a DSM View link

の 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:

シンボル Buckling stress
fの,l,c 局部座屈, 圧縮
fの,d,c 歪み座屈, 圧縮
fの,l,bx 局部座屈, bending about x
fの,d,bx 歪み座屈, bending about x
fの,l,沿って,- そしてfの,l,沿って,+ 局部座屈, bending about y (ネガティブとポジティブ)
fの,d,沿って,- そしてfの,d,沿って,+ 歪み座屈, bending about y (ネガティブとポジティブ)

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, に行く セクションビルダー and launch the 冷間成形鋼設計 モジュール.

DSM Factors for Section 1 (C15024) with the section sketch and read-only buckling stresses, 例えば. フォ,l,c 264.5 and fo,d,c 366.49

会員

の 会員 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 そして Join Selected: split the selected design members, or join them into one design member.
カラム 説明
選択する Ticks the row, for example to split or join members
設計 Tick to include the member in the design check, untick to leave it out
Design Member ID The ID of the design member
メンバーが分割されていない場合でも、非長方形の荷重は正しく適用されます The model member(s) that make up the design member
セクションID セクション(s) of the design member
L (メートル) The length of the design member
Restraint ID The restraint set used by the member. Click it to open that restraint in the 拘束 タブ

Design Member ID, メンバーが分割されていない場合でも、非長方形の荷重は正しく適用されます, セクションID そして L (メートル) 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 拘束 タブ.

Members tab with Expand Table Width, Split Selected and Join Selected, and six design members of L 6.000 m with Restraint IDs 1 に 6

拘束

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 メンバーの拘束.

  • 自動グループ: 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(s): assigns the current restraint ID to members.
  • 複製: copies the current restraint ID to a new ID.

The restraint table is filled in from the model supports and connections. 例えば, a member supported at both ends gets a row at each end.

Restraints tab for restraint ID 1 with rows at 0 (FR, NS, FFFR) そして 6 (FF, FF, FFFF), and the Tension sub-tab with Default values on

カラム 説明
選択する Ticks the row, for example to apply a standard restraint to it
ポジション Distance of the restraint from the start of the member
Major Compression 2-key restraint code (F or R) for major-axis flexural buckling
Kz Effective length factor for the major axis (auto デフォルトでは)
Minor Compression 2-key restraint code (F or R) for minor-axis flexural buckling
KY Effective length factor for the minor axis (auto デフォルトでは)
Lateral-Torsional 4-key restraint code (F, R or S) for lateral-torsional buckling
Global Buckling Bracing Unbraced, 上, 下 または 両方. 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
消去 Deletes the restraint row

疑似拘束を追加するには (restraints that are not modelled), enter the spacings in 間隔をあけて疑似拘束を追加する(s) をクリックします 追加. You can enter a comma separated list (例えば 1.5,1.5,1.5), use the multiply operator (4*1.5), or use the < operator to fit as many restraints as possible. クリック 消去 next to 追加 to remove all the pseudo-restraints.

Pseudo-restraints are added as released (RR そして RRRR), so they have no effect until you change their codes. 以下の例では, 4*1.5 adds rows at 1.5, 3 そして 4.5 m on a 6 m member, and their Lateral-Torsional code is changed to FFFR.

Restraints tab with 4*1.5 pseudo-restraints at 1.5, 3 そして 4.5 メートル (RR, RR, FFFR) on a 6 m member, next to the 3D view

Below the table are sub-tabs, each with an あ (automatic) badge by default:

  • テンション: と Default values オン, the defaults are used. Switch it off to enter your own:
    • kt: correction factor for the distribution of forces in a tension member. The default assumes a non-uniform force distribution, per AS/NZS 4600:2018 句 3.2.3.2.
    • あん 要素: factor that reduces the gross area to the net area. デフォルトは 0.85, which assumes a bolted connection.
  • Major Compression (Lと, Kと), Minor Compression (Lそして, Kそして), Twist Compression (Lバツ, Kバツ), Major Lateral-torsional (Lb, kLT, Cb) そして Minor Lateral-torsional (Lb, kLT): デフォルトでは, Determine from restraints (as defined in the restraints table) オンです. Switch it off to enter your own values for the whole member. 下 Standard Restraints, click an icon to apply a standard restraint to the selected rows.

の 拘束 section of each member report shows the restraints that were used: the user input (位置, restraint codes, k番号 そしてkええ, 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.

会員レポートセクション 5 拘束: user input at 0 そして 6 m with kez and key 0.850, notes on the codes, and the compression segments

負荷

の 負荷 tab lists the load combinations from the model, with their 名前 そして 基準. ティック 適用する for each load combination you want to include. Serviceability combinations are listed and can be ticked, but no serviceability check is performed.

Loads tab with 1.2G + 1.5Q and 1.35G (力) およびG + Q (SLS) (保守性), all with Apply ticked

結果

クリック 小切手 to run the design check. の 結果 tab shows:

  • の設計比率を表示する: chooses which ratios are shown, 例えば Governing Result, 失敗したメンバー, or a single check.
  • GOVERNING: the highest ratio and its member.
  • A toolbar to filter (すべて), sort, 構造の抑制とシフト繰り返し, show the table and open the report, もっとある 概要 button for the summary report.
  • の 部材設計比率 テーブル, と 状態 (パス または 不合格) と 報告する icon for each member. Hover over the ℹ icon in a column header to see the clause it refers to.
カラム 小切手 句
P アキシャル (張力または圧縮) 3.2 または 7.2.1
Mバツ Bending about x 7.2.2
Mそして Bending about y 7.2.2
V そして Shear along y 7.2.3
V バツ Shear along x 7.2.3
CSBバツ Combined shear and bending, about x 7.2.3
CSBそして Combined shear and bending, about y 7.2.3
CCB Combined compression and bending 7.2.4
CTBメートル Combined tension and bending, member capacity 7.2.5(1)
CTBs Combined tension and bending, section capacity 7.2.5(2)

In the 3D view, each member is coloured 不合格, 警告 または パス and labelled with its governing ratio.

Results tab, AS / NZS 4600-2018: GOVERNING 5.302 メンバー 3 (CCB), 会員 1-2 パス, 3-6 不合格, coloured to match in the 3D view

実行されたチェック

小切手 AS / NZS 4600:2018 参照
Member pre-qualification (sets Φ) 句 1.6.3
Axial tension, section capacity セクション 3.2
Axial compression, section capacity セクション 7.2.1.3
Axial compression, member capacity (グローバル, local and distortional buckling) セクション 7.2.1
Bending about x and y, section capacity セクション 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 セクション 7.2.2.1
Shear along y (ウェブ) and along x (フランジ) セクション 7.2.3
Combined bending and shear, about both axes Eq. 7.2.3(9)
Combined axial compression and bending Eq. 7.2.4
Combined axial tension and section bending capacity Eq. 7.2.5(2)
Combined axial tension and member bending capacity Eq. 7.2.5(1)

The module does not check slenderness limits, 偏向 (保守性), web crippling or torsion.

報告書

Click the report icon in a member’s 報告する column to open its design report. It opens in a Design Report for Member #n dialog with Close, 新しいタブで開く, HTMLをダウンロード そして PDFをダウンロード ボタン. The report is titled "AS/NZS 4600-2018 – Direct Strength Method", and contains:

  • プロジェクトの詳細
  • ユーティリティ: every check with its reference, シンボル, 説明, 割合とステータス
  • セクション: the dimensions and properties of the section
  • 究極の限界状態: 会員の事前資格, Strength Limit State Factors, Member Internal Actions, Member and Restraints, followed by each check step by step

Member report Utility table for Z15024: セクション 3.2 to Eq. 7.2.5(1) チェック, 例えば. Eq. 7.2.4 combined compression and bending 5.30196 不合格

クリック 概要 on the Results tab to open the 概略報告. It lists the project details (including the design code), the strength load combinations with their factors, and the results for all members.

Summary Report with Project Details (Design Code ASNZS 4600-2018, Project Units metric) and Strength Load Combinations, 1 - 1.2G + 1.5Q

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