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Concrete Structures in Earthquake Free PDF

By Thomas T. C. Hsu

This book gathers 23 papers by top experts from 11 countries, presented at the 3rd Houston International Forum: Concrete Structures in Earthquake.

Designing infrastructures to resist earthquakes has always been the focus and mission of scientists and engineers located in tectonically active regions, especially around the “Pacific Rim of Fire” including China, Japan, and the USA.

The pace of research and innovation has accelerated in the past three decades, reflecting the need to mitigate the risk of severe damage to interconnected infrastructures, and to facilitate the incorporation of high-speed computers and the internet.

The respective papers focus on the design and analysis of concrete structures subjected to earthquakes, advance the state of knowledge in disaster mitigation, and address the safety of infrastructures in general.

Content :

Periodic Material-Based Three-Dimensional (3D) Seismic Base
Shear Behavior Prediction of Non-ductile Reinforced Concrete Members in Earthquake
Experimental Study of Novel Concrete Frames Considering
Validation of the PARC_CL 2.0 Crack Model Strength Strength
Research on Resilient Reinforced Concrete Building Structural System
The State of Knowledge and Practice in Concrete Structure Design for Earthquake
Development of Large-Diameter Reinforcing Bars for the Seismic Resistance of Reinforced Concrete Bridge Columns
Reversed Cyclic Tests of 1/13 Scale Cylindrical Concrete Containment Structures
Understanding the Seismic Behaviour of FRP Retrofitted RC Shear Walls: Past and Present
Seismic Response and Collapse Risk of Shearwall Buildings Subjected to Long Duration Ground Motion
Drift Capacity at Onset of Bar Buckling in RC Members Subjected to Earthquakes

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Basic Earthquake Engineering From Seismology to Analysis and Design Free PDF

By Halûk Sucuoğlu

Earthquake engineering is generally considered as an advanced research area in engineering education. Most of the textbooks published in this field cover topics related to graduate education and research.

There is a growing need, however, for the use of basic earthquake engineering knowledge, especially, in the earthquake resistant design of structural systems. Civil engineering graduates who are concerned with the structural design face the fundamental problems of earthquake engineering more frequently in their professional careers.

Hence, an introductory level textbook covering the basic concepts of earthquake engineering and earthquake-resistant design is considered an essential educational instrument to serve this purpose.

This book aims at introducing earthquake engineering to senior undergraduate students in civil engineering and to master’s students in structural engineering who do not have a particular background in this area.

Content :

1 Nature of Earthquakes
2 Seismic Hazard Assessment
3 Response of Simple Structures to Earthquake Ground Motions.
4 Earthquake Design Spectra
5 Response of Building Frames to Earthquake Ground Motions.
6 Analysis Procedures and Seismic Design Principles for Building Structures
7 Seismic Design of Reinforced Concrete Structures.

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Earthquake Engineering Theory and Implementation Free PDF

By Nazzal Armouti

Earthquake engineering is the science that studies the behavior of structures under earthquake excitation and provides the rules on how to design structures to survive seismic shocks.

Earthquakes are wild and violent events that can have dramatic effects on structures. In fact, many structures have collapsed during earthquakes because earthquake-induced forces or displacements exceeded the ultimate capacity of the structures. Therefore, the study of structural behavior at full capacity is a necessary element of earthquake engineering.

Content :

Introduction
Characteristics of earthquakes
Linear elastic dynamic analysis
Nonlinear and inelastic dynamic analysis
The behavior of structures under seismic excitation
Design of earthquake-resistant buildings (icc)
Seismic provisions of reinforced concrete structures (aci 318)
Introduction to the aisc seismic provisions for structural steel buildings
Introduction to the aisc seismic provisions for structural steel buildings
Geotechnical aspects and foundations
Synthetic earthquakes
Seismic isolation

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Geotechnical Earthquake Engineering Handbook by Robert W. Day

The purpose of this book is to present the practical aspects of geotechnical earthquake engineering. Because of the assumptions and uncertainties associated with geotechnical engineering, it is often described as an “art” rather than an exact science.

Geotechnical earth- quake engineering is even more challenging because of the inherent unknowns associated with earthquakes. Because of these uncertainties in earthquake engineering, simple analy- ses are prominent in this book, with complex and theoretical evaluations kept to an essen- tial minimum.

Content :

Introduction
Basic Earthquake Principles
Common Earthquake Effects
Earthquake Structural Damage
Site Investigation For Geotechnical Earthquake Engineering
Liquefaction
Earthquake-induced Settlement
Bearing Capacity Analyses For Earthquakes
Slope Stability Analyses For Earthquakes
Retaining Wall Analyses For Earthquakes
Other Geotechnical Earthquake Engineering Analyses
Grading And Other Soil Improvement Methods
Foundation Alternatives To Mitigate Earthquake Effects
Earthquake Provisions In Building Codes

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Precast Prestressed Spun Concrete Piles

Precast prestressed spun concrete piles are closed-ended tubular sections of 400 mm to 600 mm diameter with maximum allowable axial loads up to about 3 000 kN.

Pile sections are normally 12 m long and are usually welded together using steel end plates. Pile sections up to 20 m can also be specially made.

Precast prestressed spun concrete piles require high-strength concrete and careful control during manufacture.

Casting is usually carried out in a factory where the curing conditions can be strictly regulated.

Special manufacturing processes such as compaction by spinning or autoclave curing can be adopted to produce high strength concrete up to about 75 MPa. Such piles may be handled more easily than precast reinforced concrete piles without damage.

This type of piles is generally less permeable than reinforced concrete piles and may be expected to exhibit superior performance in a marine environment. However, they may not be suitable for ground with significant boulder contents. In such cases, preboring may be required to penetrate the underground obstructions.

Spalling, cracking and breaking can occur if careful control is not undertaken and good
driving practice is not followed

Large-displacement piles Advantages and Disadvantages

Large-displacement piles include all solid piles, including precast concrete piles, and steel or concrete tubes closed at the lower end by a driving shoe or a plug, i.e. cast-in-place piles.

Advantages of Displacement Piles

Material of preformed section can be inspected before driving.
Steel piles and driven cast-in-place concrete piles are adaptable to variable driving
Installation is generally unaffected by groundwater condition.
Soil disposal is not necessary.
Driving records may be correlated withinsitu tests or borehole data.
Displacement piles tend to compact granular soils thereby improving bearing capacity and stiffness.
Pile projection above ground level and the water level is useful for marine structures and obviates the need to cast insitu columns above the piles.
Driven cast-in-place piles are associated with low material cost.

Disadvantages of Displacement Piles

Pile section may be damaged during driving.
Founding soil cannot be inspected to confirm the ground conditions as interpreted from the ground investigation data.
Ground displacement may cause movement of, or damage to, adjacent piles, structures, slopes or utility installations.
Noise may prove unacceptable in a built-up environment.
Vibration may prove unacceptable due to presence of sensitive structures, utility installations or machinery nearby.
Piles cannot be easily driven in sites with restricted headroom.
Excess pore water pressure may develop during driving resulting in false set of the piles, or negative skin friction on piles upon dissipation of excess pore water pressure.
Length of precast concrete piles may be constrained by transportation or size of casting yard.
Heavy piling plant may require extensive site preparation to construct a suitable piling platform in sites with poor ground conditions.
Underground obstructions cannot be coped with easily.
For driven cast-in-place piles, the fresh concrete is exposed to various types of potential damage, such as necking, ground intrusions due to displaced soil and possible damage due to driving of adjacent piles.

Pile Classification – The Four Types Of Piles

Piles can be classified according to the type of material forming the piles, the mode of load transfer, the degree of ground displacement during pile installation and the method of installation.

Pile classification in accordance with material type (e.g. steel and concrete) has drawbacks because composite piles are available. A classification system based on the mode of load transfer will be difficult to set up because the proportion of shaft resistance and endbearing resistance that occurs in practice usually cannot be reliably predicted. In the installation of piles, either displacement or replacement of the ground will predominate.

A classification system based on the degree of ground displacement during pile installation, such as that recommended in BS 8004 (BSI, 1986) encompasses all types of piles and reflects the fundamental effect of pile construction on the ground which in turn will have a pronounced influence on pile performance.

Such a classification system is therefore considered to be the most appropriate.

Piles are classified into the following four types :

(a) Large-displacement piles, which include all solid piles, including precast concrete piles, and steel or concrete tubes closed at the lower end by a driving shoe or a plug, i.e. cast-in-place piles.

(b) Small-displacement piles, which include rolled steel sections such as H-piles and open-ended tubular piles.
However, these piles will effectively become largedisplacement piles if a soil plug forms.

(c) Replacement piles, which are formed by machine boring, grabbing or hand-digging. The excavation may need to be supported by bentonite slurry, or lined with a casing that is either left in place or extracted during concreting for re-use.

(d) Special piles, which are particular pile types or variants of existing pile types introduced from time to time to improve efficiency or overcome problems related to special ground conditions.

OffShore Geotechnical Engineering Free PDF

Offshore Geotechnical Engineering Design practice in offshore geotechnical engineering has grown out of onshore practice, but the two application areas have tended to diverge over the last 30 years, driven partly by the scale of the foundation and anchoring elements used offshore and partly by fundamental differences in construction and installation techniques.

As a consequence, offshore geotechnical engineering has grown as a speciality.

The book’s structure follows a familiar pattern that mimics the flow of a typical off-shore project.

In the early chapters, it provides a brief overview of the marine environment, offshore site investigation techniques and interpretation of soil behaviour. It proceeds to cover geotechnical design of piled foundations, shallow foundations and anchoring systems.

Three topics are then covered that require a more multi-disciplinary approach: the design of mobile drilling rigs, pipelines and geohazards.

Offshore Geotechnical Engineering serves as a framework for undergraduate and postgraduate courses, and will appeal to professional engineers specialising in the offshore industry. It is assumed that the reader will have some prior knowledge of the basics of soil mechanics and foundation design.

The book includes sufficient basic material to allow readers to build on this previous knowledge, but focuses on recent developments in analysis and design techniques in offshore geotechnical engineering.

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Soil Nailing Power Point Presentation

“Soil nailing is a soil reinforcing technique that works by either driving/jacking the steel reinforcements into the ground or inserting reinforcements into a drilled hole bonded with non-shrink cementations grout in the excavated soil face”

Content:

Introduction
Advantages
Disadvantages
Typical application
Application media
Design concept
Design process
Design method
Design manual
Recommended design procedure
Failure modes
Case study
Conclusions

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Introduction to soil modelling and numerical methods

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