Basic Theory of Plates and Elastic Stability - Part 9

Tài liệu tham khảo giáo trình cơ học kết cấu trong ngành xây dựng bằng Tiếng Anh - Yamaguchi, E. “Basic Theory of Plates and Elastic Stability” Structural Engineering Handbook Ed. Chen Wai-Fah Boca Raton: CRC Press LLC, 1999 - Timber Structures
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Basic Theory of Plates and Elastic Stability - Part 9Fridley, K.J. “Timber Structures”Structural Engineering HandbookEd. Chen Wai-FahBoca Raton: CRC Press LLC, 1999 Timber Structures 9.1 Introduction Types of Wood Products • Types of Structures • Design Spec- ifications and Industry Resources 9.2 Properties of Wood 9.3 Preliminary Design Considerations Loads and Load Combinations • Design Values • Adjustment of Design Values 9.4 Beam Design Moment Capacity • Shear Capacity • Bearing Capacity • NDS® Provisions 9.5 Tension Member Design 9.6 Column Design Solid Columns • Spaced Columns • Built-Up Columns • NDS® Provisions 9.7 Combined Load Design Combined Bending and Axial Tension • Biaxial Bending or Combined Bending and Axial Compression • NDS® Provi- sions 9.8 Fastener and Connection Design Nails, Spikes, and Screws • Bolts, Lag Screws, and Dowels • Other Types of Connections • NDS® Provisions 9.9 Structural Panels Panel Section Properties • Panel Design Values • Design Re- sources 9.10 Shear Walls and Diaphragms Required Resistance • Shear Wall and Diaphragm Resistance • Design Resources 9.11 Trusses 9.12 Curved Beams and Arches Curved Beams • Arches • Design Resources 9.13 Serviceability Considerations Deflections • Vibrations • NDS® Provisions • Non-StructuralKenneth J. Fridley PerformanceDepartment of Civil & 9.14 Defining TermsEnvironmental Engineering, ReferencesWashington State University, Further ReadingPullman, WA9.1 IntroductionWood is one of the earliest building materials, and as such its use often has been based more ontradition than principles of engineering. However, the structural use of wood and wood-based 1999 by CRC Press LLCcmaterials has increased steadily in recent times. The driving force behind this increase in use is theever-increasing need to provide economical housing for the world’s population. Supporting thisneed, though, has been an evolution of our understanding of wood as a structural material andability to analyze and design safe and functional timber structures. This evolution is evidenced by therecent industry-sponsored development of the Load and Resistance Factor Design (LRFD) Standardfor Engineered Wood Construction [1, 5]. An accurate and complete understanding of any material is key to its proper use in structural appli-cations, and structural timber and other wood-based materials are no exception to this requirement.This section introduces the fundamental mechanical and physical properties of wood that govern itsstructural use, then presents fundamental considerations for the design of timber structures. Thebasics of beam, column, connection, and structural panel design are presented. Then, issues relatedto shear wall and diaphragm, truss, and arch design are presented. The section concludes with adiscussion of current serviceability design code provisions and other serviceability considerationsrelevant to the design of timber structures. The use of the new LRFD provisions for timber struc-tures [1, 5] is emphasized in this section; however, reference is also made to existing allowable stressprovisions [2] due to their current popular use.9.1.1 Types of Wood ProductsThere are a wide variety of wood and wood-based structural building products available for use inmost types of structures. The most common products include solid lumber, glued laminated timber,plywood, and orientated strand board (OSB). Solid sawn lumber was the mainstay of timber construc-tion and is still used extensively; ho ...