J. W. Bull

Precast Concrete Raft Units (eBook, PDF)

• Format: PDF

Produktbeschreibung

The use of precast concrete is a well-established construction technique for beams, floors, panels, piles, walls and other structural elements. The advan tages of precasting include excellent quality control, economical large scale production, improved construction productivity (especially in adverse weather conditions) and immediate structure availability. These advantages have been recognized for precast concrete raft pavement units (raft units) since their introduction in the 1930s. In the last ten years there has been a considerable increase in the use ofraft units, especially in their range of applications, their analysis and their design. However, the description of these developments has been published in academicjournals and conference proceedings which are not readily available to practising raft unit pavement design engineers. Pavement design engineers are underincreasingpressure to produce raft unit designs that are inexpensive, long lasting and able to allow reorganization to accommodate changing use and uncertainty offuture loading requirements. This is the first book devoted to raft unit pavements, and will become a standard work of reference.

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Produktdetails

• Verlag: Springer US
• Seitenzahl: 193
• Erscheinungstermin: 6. Dezember 2012
• Englisch
• ISBN-13: 9781461526445
• Artikelnr.: 43992151

Inhaltsangabe

1 A review of precast concrete pavements and rafts.- 1.1 Introduction.- 1.2 New precast pavement construction.- 1.3 Pavement repairs with slabs.- 1.4 Concrete pavement design.- 1.5 Joints.- 1.6 Construction.- 1.7 Summary.- 2 Analytical procedures for concrete pavements.- 2.1 Introduction.- 2.2 Concrete pavement subgrade support characterization.- 2.3 Closed-form solutions for concrete pavement responses.- 2.4 Computerized numerical analysis methods for concrete slabs-on-grade.- 2.5 Principles of dimensional analysis applied to concrete pavement data interpretation.- 2.6 Conclusions.- 3 The design of precast concrete raft-type pavements.- 3.1 Introduction.- 3.2 Previous methods of analysis.- 3.3 Repair criteria.- 3.4 Loading.- 3.5 Computer modelling.- 3.6 Raft pavement design method.- 3.7 Design example.- 3.8 Conclusions.- 4 The behaviour of precast concrete raft pavements under fatigue loading with special reference to their use in port areas.- List of symbols.- 4.1 Introduction.- 4.2 Port loading.- 4.3 Fatigue behaviour of concrete.- 4.4 Structural analysis.- 4.5 Finite element analysis.- 4.6 Conclusions.- 5 Performance improvement of precast, reinforced and prestressed concrete raft units (beam and slab) under impulsive loading.- 5.1 Introduction.- 5.2 Load characteristics.- 5.3 Analytical studies.- 5.4 Experimental studies.- 5.5 Concepts of performance improvement for impulsive loading.- 5.6 Conclusions.- 6 The behaviour of plain undowelled raft-type concrete pavement.- 6.1 Introduction.- 6.2 Laying of a plain cement concrete pavement.- 6.3 Effects of temperature change and reversible moisture movement.- 6.4 Structural response.- 6.5 Effects of pumping.- 7 Rapid pavement repair using precast concrete rafts.- 7.1 Introduction.- 7.2 Preliminary considerations.- 7.3 Surfacing types.- 7.4 Key factors in repair design.- 7.5 Repair design.- 7.6 Raft design.- 7.7 Repair boundary.- 7.8 Special equipment.- 7.9 Practical experience.- 7.10 Road repairs.- 7.11 Future developments.- 8 A review of the analysis, design, manufacture and use of precast concrete raft pavement units.- 8.1 Introduction.- 8.2 Manufacture of raft units.- 8.3 Materials used in raft manufacture.- 8.4 The analysis of raft unit pavements.- 8.5 On-site laying raft units.- 8.6 Conclusions.- References.