1 Wardenier “Tubular Structures Course” Examples Hollow Section Trusses Design Procedure.

Slides:



Advertisements
Similar presentations
ENCE 455 Design of Steel Structures
Advertisements

T4. DESIGN OF TIMBER COLUMN (axial compression) T4. Design of timber column page 1. Timber framed building Floor plan Section Example: Checking column.
REVIEW OF STEEL DESIGN KNOWLEDGE BASE REQUIRED: STRENGTH OF MATERIALS
Design of Concrete Structure I
Structural Bracings Presentation by V. G. Abhyankar
4-Chapter Allowable stresses. contents Introduction 2.6.1(p8) Compression element, Axial or bending2.6.1(p8) Compression element, Axial or bending Axial.
Horizontal Diaphragms
Beams Extremely common structural element
ONE-WAY SLAB. ONE-WAY SLAB Introduction A slab is structural element whose thickness is small compared to its own length and width. Slabs are usually.
ECIV 320 Structural Analysis I Analysis of Statically Determinate Trusses.
Wall Form Design Example (Continued)
Connection Design.
Design of Tension Members
CTC 422 Design of Steel Structures
Design of Tension Members

Compression Members. Compression Members: Structural elements subjected only to axial compressive forces Stress:Uniform over entire cross section.
PCI 6th Edition Connection Design.
COMPOSITE BEAMS-II ©Teaching Resource in Design of Steel Structures –
DESIGN OF TRUSS ROOF Chapter 7
STEEL DESIGN (I) CE 408 ( 2 – 3 – 3 ) Semester 062
BEARING OR CRUSHING Bearing Stresses (Compression Perpendicular to the Grain) Allowable stresses for compression perpendicular to the grain are available.
Buckling Critical Load Considerations
Approximate Analysis of Statically Indeterminate Structures
Tension Members Last Time
ENGR 220 Section 13.1~13.2.
Combined Bending & Axial Forces (BEAM – COLUMNS)
CTC / MTC 222 Strength of Materials
Combined Bending & Axial Forces (BEAM – COLUMNS)
Design of Tension Members
COLUMNS.
LRFD- Steel Design Dr. Ali I. Tayeh First Semester Dr. Ali I. Tayeh First Semester.
LRFD-Steel Design 1.
Beam Design.
13.4. GENERAL DESIGN CONSIDERATIONS: PRESSURE VESSELS
Chapter 6 Plate girder.
STRUT & TIE MODELS (S-T-M)
Reinforced Concrete Design
Compression Component Design
ERT352 FARM STRUCTURES TRUSS DESIGN
Steel Connections Program to calculate steel structures connections according to EC3 and DIN18800.
© Dr S R Satish Kumar, IIT Madras1 SECTION 7 DESIGN OF COMPRESSION MEMBERS.
7. APPROXIMATE ANALYSIS OF INDETERMINATE STRUCTURES
Session 15 – 16 SHEET PILE STRUCTURES
CE 382 Structural Analysis
COMPERSION MEMBER.  An initially straight strut or column, compressed by gradually increasing equal  and opposite axial forces at the ends is considered.
DESIGN OF SINGLY REINFORCED BEAM
Beam Design Beams are designed to safely support the design loads.
Concepts embedded in the draft IS:800 for Compression members
Dr S R Satish Kumar, IIT Madras1 IS 800:2007 Section 8 Design of members subjected to bending.
Design of Bracing Connections in Concentrically Braced Frames
DESIGN OF TENSION MEMBERS
Built-up Compression Members
IS 800:2007 Section 8 Design of members subjected to bending
Dr Badorul Hisham Abu Bakar
SECTION 7 DESIGN OF COMPRESSION MEMBERS
DESIGN OF STEEL ROOF TRUSSES
ERT352 FARM STRUCTURES TRUSS DESIGN
Shear in Straight Members Shear Formula Shear Stresses in Beams
Compression Members.
Outline: Introduction: a ) General description of project b) Materials
Dr. Ali I. Tayeh First Semester
REINFORCED CONCRETE COLUMN
Buckling & Stability Critical Load
Created analysis model
Beams.
EAT 415 :ADVANCED STEEL BUILDING DESIGN PLATE GIRDER
ENCE 455 Design of Steel Structures
Fire Resistance of Steel Structures
Presentation transcript:

1 Wardenier “Tubular Structures Course” Examples Hollow Section Trusses Design Procedure

2 Wardenier “Tubular Structures Course” Truss Design Procedure Determine truss layout, span, depth, panel lengths, truss spacing by usual methods. Keep connections to a minimum. Determine loads at connections and on members. Simplify these initially to equivalent loads at panel points. Determine axial forces in all members by assuming that joints are pinned and assume all member centre lines are noding

3 Wardenier “Tubular Structures Course” Truss Design Procedure Axial load Corrosion protection (surface area) Wall slenderness Determine chord member sizes considering: 4.

4 Wardenier “Tubular Structures Course” Truss Design Procedure 5. Determine web member sizes considering: Axial load t web < t chord K = 0.75 for compression webs 6. Standardize the brace member sizes: e.g. to 2 or 3 sizes Same width, different thickness? Inspection problem Check availability! 7. Layout connections: Try gap connections first Check connection geometry is within validity range Check member sizes are within validity range Pay attention to eccentricity limits Consider fabrication procedure

5 Wardenier “Tubular Structures Course” Truss Design Procedure 8. Check connection efficiencies (with charts) or resistances (with formulae or tables) Usually only a few connections need to be checked. If efficiencies or resistances are not adequate, modify the connection layout (e.g. overlap instead of gap), or Modify the members; Re-check connections. 9.

6 Wardenier “Tubular Structures Course” Check effect of primary moments on chord design. Use proper load positions on members Use proper load positions on members Determine member bending moments assuming: Determine member bending moments assuming: Pinned joints everywhere or Pinned joints everywhere or Continuous chords with pin-ended webs Continuous chords with pin-ended webs Design welded joints. Design welded joints. Fillet welding cheapest Fillet welding cheapest (Note: Weld Design can be left to the fabricator but not connection verification) 10. Check truss deflections under specified loads For compression chord, also consider noding For compression chord, also consider noding eccentricity moment. eccentricity moment. Check member (axial and bending) interactions. Check member (axial and bending) interactions. Truss Design Procedure

7 Wardenier “Tubular Structures Course” Some Golden Rules to Avoid Connection Problems General Tips for forDesigners General Tips for forDesigners

8 Wardenier “Tubular Structures Course” Deflections of Trusses Check Deflections Under Specified Loads or OverlapJoints Gap Joints or braces

9 Wardenier “Tubular Structures Course” Design Example of Design Guide 1

10 Wardenier “Tubular Structures Course” CHS K joint

11 Wardenier “Tubular Structures Course” EfficiencyCHS K joint

12 Wardenier “Tubular Structures Course” Effect Chord Pre-stress

13 Wardenier “Tubular Structures Course”

14 Wardenier “Tubular Structures Course”

15 Wardenier “Tubular Structures Course” Note: Gap of joint 2 is decreased to satisfy joint strength and the eccentricity is taken into account for the member check the eccentricity is taken into account for the member check

16 Wardenier “Tubular Structures Course”

17 Wardenier “Tubular Structures Course” Design Example of Design Guide 3

18 Wardenier “Tubular Structures Course” RHS K joint

19 Wardenier “Tubular Structures Course”

20 Wardenier “Tubular Structures Course” EfficiencyRHS K joint

21 Wardenier “Tubular Structures Course” Effect Chord stress

22 Wardenier “Tubular Structures Course”

23 Wardenier “Tubular Structures Course”

24 Wardenier “Tubular Structures Course”