By Lian Duan, Wai-Fah Chen

Over one hundred forty specialists, 14 nations, and 89 chapters are represented within the moment variation of the Bridge Engineering guide. This large assortment highlights bridge engineering specimens from worldwide, includes specified details on bridge engineering, and punctiliously explains the innovations and sensible functions surrounding the subject.

Published in 5 books: basics, Superstructure layout, Substructure layout, Seismic layout, and development and upkeep, this re-creation presents a number of worked-out examples that supply readers step by step layout strategies, contains contributions by means of top specialists from all over the world of their respective parts of bridge engineering, comprises 26 thoroughly new chapters, and updates such a lot different chapters. It deals layout recommendations, necessities, and perform, in addition to a number of the sorts of bridges. The textual content contains over 2,500 tables, charts, illustrations, and images. The booklet covers new, leading edge and standard tools and practices; explores rehabilitation, retrofit, and upkeep; and examines seismic layout and development materials.

The moment publication, Superstructure layout, comprises 19 chapters, and covers info on easy methods to layout every kind of bridges.

What’s New within the moment Edition:

Includes new chapters: Extradosed Bridges and tension Ribbon Pedestrian Bridges
Updates the Prestressed Concrete Girder Bridges bankruptcy and rewrites it as chapters: Precast/Pretensioned Concrete Girder Bridges and Cast-In-Place Post-Tensioned Prestressed Concrete Girder Bridges
Expands the bankruptcy on Bridge Decks and method Slabs and divides it into chapters: Concrete Decks and method Slabs
Rewrites seven chapters: Segmental Concrete Bridges, Composite metal I-Girder Bridges, Composite metal field Girder Bridges, Arch Bridges, Cable-Stayed Bridges, Orthotropic metal Decks, and Railings

This textual content is a perfect reference for training bridge engineers and specialists (design, building, maintenance), and will even be used as a reference for college students in bridge engineering classes.

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Additional info for Bridge Engineering Handbook: Superstructure Design (2nd Edition)

Example text

Superstructure is type (k). Therefore, all criteria are satisfied. 192 klf 25 Precast–Pretensioned Concrete Girder Bridges (b) Calculate shear force and bending moment due to DC and DW Many structural analysis software programs are available commercially and could be used to perform structural analysis. 4: Mx = wx ( L − x ) 2  L Vx = w  − x  2  where w = uniform dead load, k/ft x = distance from left end of the girder L = span length = 85 ft (c) Calculate shear force and bending moment due to live loads The live load considered in this example is the AASHTO HL-93 load (i) Live load distribution factor (for an interior girder) Live load shear forces and bending moments for an interior girder can be determined using the simplified distribution factor formulas specified in AASHTO Art.

Determine required prestressing force. Estimate prestress losses. Check concrete stresses for service limit state. Design for strength limit state—flexural. Design for strength limit state—shear. Check longitudinal reinforcement requirement. Design anchorage zone reinforcement. Calculate deflection and camber. 5 is commonly used. 4L to control concrete stresses at the top of the girder at transfer stage. 16 Typical cross secton. 9 in. Assume that a 7-in concrete slab thickness is used for the bridge deck.

3 in. 2-1) Solving the above equation for P, the required minimum P = 670 kip. 1 strands. 9 in from bottom of girder. To control the stress at transfer of prestressing force, harp two strands at middle web location to 36 in and two strands to 38 in at girder ends. 20. 4 in. 20 Strand pattern at midspan and at girder ends. 25 ksi (assume 10% initial loss). 7 ksi. 3% < 10% assumed. Therefore, iteration is needed to calculate ∆f pES. 1 ksi. 4 of the AASHTO LRFD Bridge Design Specifications 2012 Edition.

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