PERFORMANCE-BASED APPROACH IN SEISMIC DESIGN OF EMBEDDED RETAINING WALLS
Author: CIRO VISONE | Size: 4.1 MB | Format:PDF | Quality:Unspecified | Publisher: UNIVERSITÀ DEGLI STUDI DI NAPOLI FEDERICO II | Year: 2008 | pages: 203
The increasing use of the underground spaces and the last seismic events in the urban areas have driven many researchers of different countries to deepen the knowledge on the dynamic behaviour of the structure embedded in the subsoil. This thesis attempts to give some contributes on the application of the performance based approach for the seismic design of the embedded retaining walls. After an overview on the earth pressure theories proposed by different authors, the static and seismic design methods commonly adopted in the current practice and
based on pseudostatic approaches are recalled. Several limitations on these procedures can be recognized: the difficulties on the
definition of the seismic coefficient; the calculation of the expected earthquakeinduced displacements around the construction. Moreover, in the framework of the Performance-Based Design, these methods do not able to describe the response of the retaining systems to a given earthquake. The seismic displacements of the flexible walls are evaluated by means of Newmark sliding block procedures, that were developed for rigid structures, and the yield sequence of the different structural
components can not be predicted. Then, the application of the hierarchical resistance criteria in the dimensioning of the various parts can not be applied. In this thesis, different level of analysis are highlighted in relation to the importance of the structure and to the design phase.
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Recent earthquake surveys have revealed the significance of RC walls as an integral part of structures. It reduces the structure damage to some extent. However, like other structural member they too are vulnerable. Researchers on basis of their post eartthquake survey and laboratary experiments have concluded that the RC wall buildings sustained damage, mainly due to design and construction work flaws. In this thesis experimental result of shear walls is discussed. They were designed under-reinforced to fail in shear in ase of short wall and in flexure for slender walls. Three out of these six specimens, in each case, were strengthened externally with CFRP strips bonded to wall panel and mesh anchors installed at wall foundation joint. Two specimens, one RC and one CFRP retrofitted (short and slender wall each), were subjected to static load test and three specimens, one RC and two to three CFRP retrofitted, were subjected to quasi static cyclic load tests. The test result analysis discussion includes failure mode, stiffness, ultimate load capacity, ductility, and energy dissipation
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Strengthening Design of Reinforced Concrete with FRP establishes the art and science of strengthening design of reinforced concrete with fiber-reinforced polymer (FRP) beyond the abstract nature of the design guidelines from Canada (ISIS Canada 2001), Europe (FIB Task Group 9.3 2001), and the United States (ACI 440.2R-08). Evolved from thorough class notes used to teach a graduate course at Kansas State University, this comprehensive textbook:
Addresses material characterization, flexural strengthening of beams and slabs, shear strengthening of beams, and confinement strengthening of columns Discusses the installation and inspection of FRP as externally bonded (EB) or near-surface-mounted (NSM) composite systems for concrete members Contains shear design examples and design examples for each flexural failure mode independently, with comparisons to actual experimental capacity Presents innovative design aids based on ACI 440 code provisions and hand calculations for confinement design interaction diagrams of columns Includes extensive end-of-chapter questions, references for further study, and a solutions manual with qualifying course adoption
Delivering a detailed introduction to FRP strengthening design, Strengthening Design of Reinforced Concrete with FRP offers a depth of coverage ideal for senior-level undergraduate, master’s-level, and doctoral-level graduate civil engineering courses.
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Boundary Element Method for Plate Analysis offers one of the first systematic and detailed treatments of the application of BEM to plate analysis and design.
Aiming to fill in the knowledge gaps left by contributed volumes on the topic and increase the accessibility of the extensive journal literature covering BEM applied to plates, author John T. Katsikadelis draws heavily on his pioneering work in the field to provide a complete introduction to theory and application.
Beginning with a chapter of preliminary mathematical background to make the book a self-contained resource, Katsikadelis moves on to cover the application of BEM to basic thin plate problems and more advanced problems. Each chapter contains several examples described in detail and closes with problems to solve. Presenting the BEM as an efficient computational method for practical plate analysis and design, Boundary Element Method for Plate Analysis is a valuable reference for researchers, students and engineers working with BEM and plate challenges within mechanical, civil, aerospace and marine engineering.
One of the first resources dedicated to boundary element analysis of plates, offering a systematic and accessible introductory to theory and application
Authored by a leading figure in the field whose pioneering work has led to the development of BEM as an efficient computational method for practical plate analysis and design
Includes mathematical background, examples and problems in one self-contained resource
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Article/eBook Full Name: Planning, Design, and Analysis of Tailings Dams
Author(s): S.G. Vick
Publish Date: 1990
ISBN: ISBN 0-921095-12-0
Published By: BITECH
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This book is devoted to bridges that are built by incremental launching methods, using prestressed composite materials. It integrates the static, aesthetic, and economic aspects of construction techniques for building these state-of-the-art structures.Bridge launching is a comprehensive handbook, offering explanations of both the theoretical and technological aspects of the construction process. Both beam bridges and arch bridges are thoroughly analysed,and special theories aimed at optimising static aspects, as well as local phenomena, are developed.
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This International Standard specifies the general properties of coatings and test methods for coatings applied by dipping fabricated iron and steel articles (including certain castings) in a zinc melt (containing not more than 2 % of other metals). It does not apply to the following:
a) sheet, wire and woven or welded mesh products that are continuously hot dip galvanized;
b) tube and pipe that are hot dip galvanized in automatic plants;
c) hot dip galvanized products (e.g. fasteners) for which specific standards exist and which might include additional requirements or requirements which are different from those of this International Standard.
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This International Standard specifies the method of using coating thickness instruments of the magnetic type for non-destructive measurements of the thickness of non-magnetic coatings (including vitreous and porcelain enamel coatings) on magnetic basis metals.
The method is applicable only for measurements on reasonably flat specimens. In the case of nickel coatings on non-magnetic substrates, the preferred method is that specified in ISO 2361.
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