LATERAL STABILITY OF WOOD BEAM AND DECK

MODERN TIMBER STRUCTURES FREQUENTLY EMPLOY LARGE WOOD BEAMS BRIDGED BY 2 IN. WOOD DECKING. ECONOMY OF MATERIAL DICTATES THE USE OF DEEP NARROW BEAMS WHOSE DESIGN IS LIMITED BY CONSIDERATIONS OF LATERAL INSTABILITY. SUCH CONSTRUCTIONS MUST RELY UPON THE IN-PLANE SHEAR RIGIDITY OF THE ATTACHED DECK TO PREVENT COLLAPSE, YET WHEN DECKS OF LOW RIGIDITY SUCH AS 2 IN. DECKS ARE EMPLOYED, THE STABILITY OF THE RESULTING STRUCTURE IS SERIOUSLY IN QUESTION. THIS REPORT QUANTITATIVELY ANSWERS THE QUESTION OF HOW MUCH SHEAR RIGIDITY A DECK MUST POSSESS IN ORDER TO PROVIDE ADEQUATE LATERAL SUPPORT WHEN ATTACHED TO THE TOP OF A SET OF DEEP BEAMS. A VARIATIONAL METHOD OF DERIVATION IS EMPLOYED, AND BUCKLING CURVES ARE PRESENTED FOR FIVE CASES OF LOAD AND SUPPORT. THE USE OF THESE RESULTS BY STRUCTURAL ENGINEERS WILL FACILITATE THE SAFE DESIGN OF LIGHTWEIGHT ECONOMICAL WOOD STRUCTURES.

• Supplemental Notes:
  • PROC PAPER 9829 2 APP
• Authors:
  • Zahn, J J
• Publication Date: 1973-7

Media Info

• Features: References; Tables;
• Pagination: 18 p.
• Serial:
  • Journal of the Structural Division
  • Volume: 99
  • Issue Number: st7
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Beams; Bridge decks; Concrete; Concrete tests; Consistency; Stiffness; Structural engineering; Timber construction; Wood structures
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00210095
• Record Type: Publication
• Files: TRIS
• Created Date: May 15 1974 12:00AM