Theory and Practice of Pile Foundations by Wei Dong Guo

During the last 20 years, I’ve witnessed and grown to understand the issue undergraduate college students generally have in greedy geotechnical programs. Geotechnical programs have many new ideas and indigestible expressions to be memorized initially. The words usually originate from superior elastic mechanics, plastic mechanics, and numerical approaches and are technical and not simply accessible to college students. To resolve the issue, our analysis decision has been to attenuate the number of strategies, enter parameters for every technique, and fix as many problems as possible. We imagine this can permit more straightforward entry to studying, observe, and integration into additional analysis. Piles, as a preferred basis kind, are incessantly used to switch superstructure load into subsoil and stiff-bearing layer and to switch affect of surcharge owing to soil motion and lateral drive into underlying layers.

They’re conventionally made of metal, concrete, timber, and artificial supplies (Fleming et al. 2009) and have been used because the Neolithic Age (6,000~7,000 years in the past) (Shi et al. 2006). Their use is somewhat in depth and numerous. For example, in 2006, ~50 million piles were put in in China, ranging (in sequence of excessive to low proportion) from metal pipe piles, bored cast-in-place piles, hand-dug piles, precast strengthened concrete piles, pre-stressed concrete pipe piles, and pushed cast-in-place piles to squeezed department piles. 

It’s crucial that any design technique ought to permit dependable design parameters to be gained cheaply. Extra parameters typically imply extra problem in warranting a verified and expeditious procedure. We try to plan design strategies that require fewer parameters however resolve different issues. This has yielded a scientific approach to mannequin pile response within the context of load switch fashions. That is summarized on this ebook of 13 chapters.

Chapter 2 briefly explains typical strategies for estimating bearing capability (together with damaging pores and skin friction) of single piles and pile teams. Chapter 3 recaptures pile–soil interplay fashions underneath vertical, lateral, or torsional loading. Chapters 4 and 5 mannequin the response of vertically loaded piles underneath static and cyclic loading and time-dependent habits, respectively. The mannequin is developed to estimate settlement of giant pile teams in Chapter 6. A variational strategy is employed to infer an elastic mannequin of lateral piles in Chapter 7, incorporating typical base and head constraints.

The pu-based mannequin is additional developed to imitate a nonlinear response of laterally loaded pile teams (see Chapter 11) and to design passive piles in Chapter 12. The mechanism about passive piles is revealed in Chapter 13 utilizing 1-g mannequin assessments. General, Chapter 3 offers a time-dependent load switch mannequin that captures pile–soil interplay underneath vertical loading in Chapters 4 by 6.

Table of contents :

1. Strength and stiffness from in situ tests —
2. Capacity of vertically loaded piles —
3. Mechanism and models for pile-soil interaction —
4. Vertically loaded single piles —
5. Time-dependent response of vertically loaded piles —
6. Settlement of pile groups —
7. Elastic solutions for laterally loaded piles —
8. Laterally loaded rigid piles —
9. Laterally loaded free-head piles —
10. Structural nonlinearity and response of rock-socket piles —
11. Laterally loaded pile groups —
12. Design of passive piles —
13. Physical modeling on passive piles.

Abstract:

“Pile Foundations are an essential basis for many structures. It is vital that they be designed with the utmost reliability, because the cost of failure is potentially huge. Covering a range of design issues relating to pile design, this book presents economical and efficient design solutions and demonstrates them using real world examples. Coverage includes nonlinear response of single piles to vertical or torsional loading and to cyclic lateral loading, as well as prediction of nonlinear response of lateral pile groups, vertically loaded pile groups and the design of slope stabilising piles. Most solutions are provided as closed-form expressions. Theory and Practice of Pile Foundations is:illustrated with case studiesaccompanied by practical applications in Excel and MathCadthe first book to incorporate nonlinear interaction into pile design.A valuable resource for geotechnical engineering students taking foundations courses and a vital tool for engineers designing pile foundations.”