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Structural Design from First Principles



This enlightening textbook for undergraduates on civil engineering degree courses explains structural design from its mechanical principles, showing the speed and simplicity of effective design from first principles.


  • ISBN: 9781138503496
  • Páginas: 315
  • Tamaño: 17x24
  • Edición:
  • Idioma: Ingles
  • Año: 2018

Compra bajo pedidoDisponibilidad: 3 a 7 Días

Contenido Structural Design from First Principles

*  Principles-based and independent of codes of practice

* Outlines robust methods for achieving excellent approximations

* Shows how to design complex and exciting structures

* Supported by detailed examples and questions/answers


This enlightening textbook for undergraduates on civil engineering degree courses explains structural design from its mechanical principles, showing the speed and simplicity of effective design from first principles.

This text presents good approximate solutions to complex design problems, such as "Wembley-Arch" type structures, the design of thin-walled structures, and long-span box girder bridges. Other more code-based textbooks concentrate on relatively simple member design, and avoid some of the most interesting design problems because code compliant solutions are complex. Yet these problems can be addressed by relatively manageable techniques. The methods outlined here enable quick, early stage, "ball-park" design solutions to be considered, and are also useful for checking finite element analysis solutions to complex problems.

The conventions used in the book are in accordance with the Eurocodes, especially where they provide convenient solutions that can be easily understood by students. Many of the topics, such as composite beam design, are straight applications of Eurocodes, but with the underlying theory fully explained.

The techniques are illustrated through a series of worked examples which develop in complexity, with the more advanced questions forming extended exam type questions. A comprehensive range of fully worked tutorial questions are provided at the end of each section for students to practice in preparation for closed book exams.


Symbols and abbreviations

1 Limit state design

- Partial safety factors
- Calculation of loads
- Factor of safety
- Pattern loading

2 Steel members in flexures

- Shear strength
  - Hot-rolled sections
  - Thin-walled sections
- Bending strength of laterally restrained beams
  - Bending moment capacity in the presence of high shear forces
- Lateral torsional buckling

3 Buckling of steel columns and trusses

- Basic strut buckling
- Beam columns
- Web buckling
- Simple trusses
- Buckling of slender trusses
- Buckling of slender trusses subjected to compression and bending
- Reference

4  Buckling of archers

- Elastic critical buckling and effective length
- Applied forces and moments
- Hollow section or I and H-section arches
- Laced girder arches
- Calculation of elastic critical buckling load using the Timoshenko method
- Reference

5 Buckling of thin-walled structures

- Unstiffened plates in compression
- Shear buckling of unstiffened plates
- Unstiffened plates in compression and shear
- Buckling of stiffened plates in compression
- Buckling of stiffened plates in shear
- Stiffened panels subjected to shear and compression stresses
- Stiffened plates with lateral loads
- Stiffened panels in shear compression and bending
- References

6 Composite structures

- Effective width
- Serviceability limit state design
- Shear stud design
   - Elastic design of the shear studs
   - Plastic design of shear studs

7 Reinforced concrete beams and colums

- Material properties
- Moment capacity of beams
  - Singly reinforced  beams
  - Doubly reinforced beams
- The maximum and minimum areas of reinforcement in a beam
- Anchorage of reinforcement and lapping of bars
- Shear capacity of beams
- Introduction to colums design
- Short columns subjected to combined compression and bending
- M-N Interaction diagrams
- Biaxial bending

8 Prestressed structures

- Introduction to the basic theory
- SLS design
  - Member sizing
  - The permissible ranges of tendon force
  - Determining the allowable torerance in the positioning of the prestressing tendons
- Prestress losses
  - Anchorage draw-in
  - Elastic shortening
  - Relaxation of the tendons
  - Concrete creep
  - Shrinkage
- Deflections
  - Simply supported beam
  - Coninuous beam
  - Deflection in a propped cantilever
- Composite construction using pre-tensioned precast concrete beams
- ULS bending strength
- ULS shear strength
- Design of anchorages
- Reference

9  Strut and tie modelling of reinforced concrete

- Introduction to STM
- Formulation of the strut and tie model
  - Partial discontinuity
  - Full discontinuity
- Design of the ties
- Control of compression stresses
  - Reinforced bottle-shaped struts
  - The calculation of strut widths
- Minimum reinforcement
- References

10 Control of cracking in reinforced concrete

- Heat of hydration shrinkage
- Drying strain
- Cracking due to restrained shrinkage
- Calculation of crack widths
- Calculation of crack widths for beams
- Control of cracking due to solar gain
- Reference

11. Timber beams,columns and trusses

- Material properties
- Shear strength
- Compression strength
- Compression and bendinhg




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