Download or read book Analytical and Experimental Studies on Seismic Behavior of Mid story Isolated Buildings written by 汪向榮 and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Earthquake Resistant Engineering Structures X written by C.A. Brebbia and published by WIT Press. This book was released on 2015-09-15 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Containing the latest research on preparation for and mitigation of future earthquakes, this book addresses an area of increasing importance to many areas around the world. It contains research presented at the ninth and latest in a series of biennial conferences on the topic organised by the Wessex Institute. As world population has concentrated in urban areas, we have seen the consequences of natural disasters take an ever higher toll in human life and property. Adding to this trend, earthquake activity is being registered in areas that were not previously very active, thus the need for research into the application of technological advances to the specific area of earthquake engineering. This volume presents those advances. The papers cover Seismic Isolation and Energy Dissipation; Building Performance During Earthquakes; Nonlinear Numerical Analysis; Performance Based Design; Experimental Studies; Seismic Hazard Evaluation and Microzoning for Structural Design; Seismic Hazard Assessment; Case Studies.
Download or read book Experimental Studies of the Ultimate Behavior of Seismically isolated Structures written by Peter W. Clark and published by . This book was released on 1997 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Earthquake Resistant Engineering Structures VIII written by C. A. Brebbia and published by WIT Press. This book was released on 2011 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to protect the built environment in earthquake-prone regions of the world It is important to retrofit and rehabilitate existing structures and infrastructure, as well as to ensure the optimal design and construction of new facilities. The high stakes in human life and property in urban densely populated urban areas has been driving research on advances in this field. These advances are presented biennially at a conference organized by the Wessex Institute of Technology. This book contains the papers from the latest conference in the series, which began in 1991. The papers cover Geographical and geotechnical engineering; Seismic hazard and vulnerability; Seismic isolation and energy dissipation; Structural dynamics; Building performance during earthquakes; Retrofitting; Lifelines; Material mechanics and characterisation; Nonlinear numerical analysis; Performance based design; Experimental studies; Safety and security; and Innovative technologies.
Download or read book Seismic Isolation Structural Health Monitoring and Performance Based Seismic Design in Earthquake Engineering written by Azer A. Kasimzade and published by Springer. This book was released on 2018-08-13 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book features chapters based on selected presentations from the International Congress on Advanced Earthquake Resistance of Structures, AERS2016, held in Samsun, Turkey, from 24 to 28 October 2016. It covers the latest advances in three widely popular research areas in Earthquake Engineering: Performance-Based Seismic Design, Seismic Isolation Systems, and Structural Health Monitoring. The book shows the vulnerability of high-rise and seismically isolated buildings to long periods of strong ground motions, and proposes new passive and semi-active structural seismic isolation systems to protect against such effects. These systems are validated through real-time hybrid tests on shaking tables. Structural health monitoring systems provide rapid assessment of structural safety after an earthquake and allow preventive measures to be taken, such as shutting down the elevators and gas lines, before damage occurs. Using the vibration data from instrumented tall buildings, the book demonstrates that large, distant earthquakes and surface waves, which are not accounted for in most attenuation equations, can cause long-duration shaking and damage in tall buildings. The overview of the current performance-based design methodologies includes discussions on the design of tall buildings and the reasons common prescriptive code provisions are not sufficient to address the requirements of tall-building design. In addition, the book explains the modelling and acceptance criteria associated with various performance-based design guidelines, and discusses issues such as selection and scaling of ground motion records, soil-foundation-structure interaction, and seismic instrumentation and peer review needs. The book is of interest to a wide range of professionals in earthquake engineering, including designers, researchers, and graduate students.
Download or read book Earthquake Resistant Engineering Structures XI written by C.A. Brebbia and published by WIT Press. This book was released on 2017-09-25 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: In its 11th year, and reporting on the latest research on preparation for and mitigation of future earthquakes, this volume examines an area of increasing importance to many countries around the world. ERES 2017 assembled experts from around the world to present their basic and applied research in the fields of earthquake engineering relevant to the design of structures. As the world’s population has concentrated in urban areas resulting in buildings in regions of high seismic vulnerability, we have seen the consequences of natural disasters take an ever higher toll on human existence. Protecting the built environment in earthquake-prone regions involves not only the optimal design and construction of new facilities, but also the upgrading and rehabilitation of existing structures including heritage buildings, which is an important area of research. Major earthquakes and associated effects, such as tsunamis, continue to stress the need to carry out more research and a better understanding of these phenomena is required to design earthquake resistant buildings and to carry out risk assessment and vulnerability studies. Some of the subject areas covered are: Seismic isolation and energy dissipation; Building performance during earthquakes; Numerical analysis; Performance based design; Experimental studies; Seismic hazards and tsunamis; Safety engineering; Liquefaction; Innovative technologies; Paraseismic devices and Lifelines and resilience.
Download or read book Experimental Study of Seismic Isolation Systems with Emphasis on Secondary System Response and Verification of Accuracy of Dynamic Response History Analysis Methods written by Eric D. Wolff and published by . This book was released on 2004 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Current Perspectives and New Directions in Mechanics Modelling and Design of Structural Systems written by Alphose Zingoni and published by CRC Press. This book was released on 2022-09-02 with total page 4438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems comprises 330 papers that were presented at the Eighth International Conference on Structural Engineering, Mechanics and Computation (SEMC 2022, Cape Town, South Africa, 5-7 September 2022). The topics featured may be clustered into six broad categories that span the themes of mechanics, modelling and engineering design: (i) mechanics of materials (elasticity, plasticity, porous media, fracture, fatigue, damage, delamination, viscosity, creep, shrinkage, etc); (ii) mechanics of structures (dynamics, vibration, seismic response, soil-structure interaction, fluid-structure interaction, response to blast and impact, response to fire, structural stability, buckling, collapse behaviour); (iii) numerical modelling and experimental testing (numerical methods, simulation techniques, multi-scale modelling, computational modelling, laboratory testing, field testing, experimental measurements); (iv) design in traditional engineering materials (steel, concrete, steel-concrete composite, aluminium, masonry, timber); (v) innovative concepts, sustainable engineering and special structures (nanostructures, adaptive structures, smart structures, composite structures, glass structures, bio-inspired structures, shells, membranes, space structures, lightweight structures, etc); (vi) the engineering process and life-cycle considerations (conceptualisation, planning, analysis, design, optimization, construction, assembly, manufacture, maintenance, monitoring, assessment, repair, strengthening, retrofitting, decommissioning). Two versions of the papers are available: full papers of length 6 pages are included in the e-book, while short papers of length 2 pages, intended to be concise but self-contained summaries of the full papers, are in the printed book. This work will be of interest to civil, structural, mechanical, marine and aerospace engineers, as well as planners and architects.
Download or read book Experimental and Analytical Investigation of Seismic Retrofit of Structures with Supplemental Damping written by Andrei Reinhorn and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial Modelling and Failure Analysis of Natural and Engineering Disasters through Data based Methods Volume II written by Faming Huang and published by Frontiers Media SA. This book was released on 2023-08-01 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Isolation Strategies for Earthquake resistant Construction written by Mikael Melkumyan and published by . This book was released on 2019 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquakes are catastrophic events that cause huge economic losses due to the vulnerability of the existing building stock. However, collapses of vulnerable buildings can be avoided if preventative measures, such as enhancement of their earthquake resistance, are implemented on time. This book will allow the reader to become acquainted with a number of unique, modern and cost-effective seismic isolation strategies, which can be easily, and in very short periods of time, and without interruption of the use of the buildings, implemented with high efficiency in existing buildings, making them earthquake proof. An important aspect here is that the book's seismic isolation strategies are demonstrated on real examples of existing buildings with different structural systems, such as reinforced concrete frame buildings with shear walls and stone buildings with load-bearing walls. The cost-effectiveness of the suggested strategies is further proved by comparative analyses carried out for buildings both with and without seismic isolation systems.
Download or read book Seismic Response of Base Isolated Buildings Considering Pounding to Moat Walls written by Armin Masroor Shalmani and published by . This book was released on 2013 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismic isolation offers a simple and direct opportunity to control or even eliminate damage to structures subjected to ground shaking by simultaneously reducing deformations and acceleration demands. A base isolation system decouples the superstructure from the ground resulting in elongation of fundamental period of the structure and reducing the accelerations transferred to superstructure during ground shaking. However, increasing the fundamental period of the structure is mostly accompanied by increased displacement demands. In base isolated structures, this large displacement is concentrated at base level where seismic isolation devices are installed and designed to handle these large deformations without damage. A typical base isolated basement design requires a space in which the building is free to move sideways without hitting the surrounding structure. This space is commonly referred to as the "moat". Structural design codes such as ASCE 7-05 that regulate the design of buildings incorporating seismic base isolation systems require the minimum moat wall clearance distance equal to the maximum displacement at the base of the structure under the Maximum Considered Earthquake (MCE), although the superstructure is designed for design basis earthquake (DBE) level. Despite the cautious regulation for moat wall gap distance, pounding of base isolated buildings to moat walls has been reported in previous earthquakes. In conventional structures, the pounding problem between adjacent structures of buildings and highway bridges has been a major cause of seismic damage, even collapse, during earthquakes in the past several decades. Current design specifications may not adequately account for the large forces generated during impact in base isolated buildings. This study investigates the pounding phenomenon in base isolated buildings from both experimental and analytical perspectives by conducting shake table pounding experiments, developing effective models for impact to moat walls and evaluating the adequacy of code specifications for the gap distance of moat walls. A series of prototype base isolated moment and braced buildings designed by professional engineers for the purpose of this project is presented and one of the models was selected for a quarter scale shake table test with moat walls. The pounding experiments indicate that the contact forces generated during pounding can induce yielding in the superstructure and amplify the response acceleration at all stories of the building. The response amplification and damage depends on the gap distance, moat wall properties, and impact velocity. A detailed finite element model of the test setup is developed in OpenSees. An analytical study on the dynamic behavior of the moat walls resulted in proposing a new impact element. Numerical simulation using the proposed impact element compares well with experimental results. A series of collapse studies using the Methodology in FEMA P695 was conducted for both prototype models at various gap distances. The collapse probability of base isolated models used in this study and the effect of moat wall gap distance on the probability of collapse for base isolated structures is investigated. These studies verify that pounding to moat walls at the required gap distance by ASCE7-05 result in acceptable probability of collapse for the flexible and ductile moment frame models examined. However, the braced frame shows a notable drop in collapse margin ratio because of pounding to moat wall at the required gap distance and requires increasing the gap distance by 17%. to have an acceptable collapse probability.
Download or read book Experimental and Analytical Studies on the Seismic Response of Freestanding and Anchored Building Contents written by Dimitrios A. Konstantinidis and published by . This book was released on 2008 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Analysis and Retrofitting of Historical Buildings written by Antonio Formisano and published by Frontiers Media SA. This book was released on 2020-10-29 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book Experimental and Computational Investigation of the Seismic Performance of Stair Systems in Buildings written by Xiang Wang and published by . This book was released on 2015 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stairs serve as an essential nonstructural system within buildings, providing a safe means of egress as well as much needed access for emergency responders following an earthquake. Unfortunately, the state of knowledge regarding the seismic behavior of these critical systems is limited, despite the fact that past earthquakes repeatedly reveal that stair systems are highly vulnerable to damage even in low- or moderate-intensity earthquakes. As a result, disruptions to building functionality, delayed rescue operations, and life safety hazards ensue. To this end, this dissertation presents a first-of-its-kind experimental investigation of the seismic behavior of a prefabricated steel stair system incorporated in a full-scale five-story building shake table test program. These system-level tests allowed investigation of the seismic behavior of these systems under realistic installation and dynamic loading conditions. In this work, the modal characteristics of the stair system identified using white noise base excitation test data as well as the physical observations of the stair system during earthquake tests of increasing intensities are presented. Analysis of the earthquake response of the stair system particularly focuses on associating their behavior with the seismic demands of the test building and the associated implications on seismic design. These shake table tests highlight the seismic vulnerability of modern designed stair systems and in particular the importance of improving the deformability of flight-to-building connections. The second part of this work involves a comprehensive computational study to capture at first the salient seismic response characteristics of prefabricated steel stairs in isolated configurations and subsequently the key response characteristics of building-stair systems. Detailed three-dimensional finite element models of a pair of prefabricated steel stairs are developed and their efficacy evaluated through extensive comparison with experimental data. The validated modeling approach is then used in a parametric assessment of the seismic behavior of stair systems using a broader range of design variables commonly found in practice. Subsequently, a system-level numerical study is conducted to investigate the interaction between buildings and stair systems and the associated impacts on building response characteristics as well as estimated stair loss using a probabilistic seismic analysis framework. Simulation results indicate that although the presence of stairs does not significantly modify the seismic response of buildings, enhancing the stair deformability can effectively mitigate the severity of seismic damage and loss of these critical nonstructural systems.
Download or read book Recent Awards in Engineering written by and published by . This book was released on 1983 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Analysis of Multi Story Unreinforced Masonry Buildings with Flexible Diaphragms written by Juan Aleman Hernandez and published by . This book was released on 2014 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies regarding the regional seismicity of New York City (NYC) indicate that earthquakes of magnitude greater than or equal to 5 have a 20-40% probability of occurring in a 50 year period. Considering that more than 50% of the large population of the region (19.1 million) is living in an area where 80% of the buildings are of old Unreinforced Masonry (URM) construction, it is likely that even a moderate earthquake could have critical consequences on public safety and the economy of this area. The main goal of this study was to develop simulation capabilities supported by experimental testing to evaluate the seismic performance of typical unreinforced masonry buildings with flexible diaphragms located in NYC. Simplified nonlinear macro-models of wood diaphragms, masonry walls and floor-to-wall connections were developed and validated individually using data from past experiments. The models are implemented in both commercial and research software to demonstrate their practical use. In particular, a new approach for modeling flexible diaphragms is proposed that is shown to provide similar accuracy to detailed finite element models at a fraction of the computation cost. The models developed were also validated as at the system level, through shake table testing of two full-scale specimens conducted as part of this study. The specimens were designed and constructed to represent the expected loading conditions of a central portion of a one-story URM building and constructed of materials representative of older masonry construction. The tests provide a unique data set that captures the interaction between flexible floors, out-of-plane walls and their connections at, full scale.The validated macro-models can be used for performance-based seismic assessment of unreinforced masonry building in NYC and elsewhere. To demonstrate their use, preliminary studies were conducted to develop out-of-plane URM fragility curves, a building-specific collapse fragility function, and estimate the seismic response of the building when subjected to a ground shaking intensity similar to the 2011 Virginia Earthquake. The probabilistic framework and new performance definitions provided by the FEMA P58 project were used to conduct a performance-based seismic assessment for an archetype unreinforced masonry building in New York City with an emphasis on out-of-plane behavior. This preliminary study served to demonstrate the applicability of the proposed models for applications in performance-based design.
