Seismic retrofitting guidelines of buildings in nepal. Understand the vulnerabilities and failure modes of weakstory buildings under eq demands. National disaster management guidelines on seismic retrofitting of deficient. Retrofitting and refurbishment processes of heritage buildings. Heritage buildings, by their very nature and history material and assembly, present challenges in diagnosis, analysis and rehabilitation, which limits the application of modern legal codes and building standards. Seismic qualification ev entually leads to retrofitting of the deficient structures. Pushover analysis and seismic retrofitting using shear walls. An innovative method for the seismic retrofitting of existing steel moment frame structures using side plate technology behzad rafezy 1, quang huynh, henry gallart1, mohammad kheirollahi2 1sideplate systems, inc. Reference rehabilitation and retrofitting of structures rrs notes pdf rrs pdf notes rrs pdf rrs notes. Building regulation for resilience world bank documents. Quan3 summary thirtytwo buildings from the puget sound naval shipyard psns, washington, usa, were seismically evaluated by the twotiered evaluation recommended by the u.
Review of seismic retrofitting strategies for residential. Retrofitting design of building structures crc press book retrofitting of building structures, including maintenance, rehabilitation, and strengthening, is not only an important issue in urban construction and management, but also a frequent problem to structural engineers in property management disciplines. These performance objectives can be such as limiting story drift, minimizing component damage etc. Pdf seismic retrofitting of reinforced concrete buildings using. Review of retrofitting methods to reduce seismic vulnerability of buildings, with particular reference to hospitals and medical facilities dina dayala, carmine galasso, stylianos minas. Seismic retrofitting techniques for concrete structures focuses procedures to improve evaluation of seismic vulnerability of reinforced concrete buildings and provide innovative retrofitting techniques such as base isolation and mass reduction. Feb 16, 2012 seismic retrofit of building structures 1. Final report of the getty seismic adobe project, this book offers guidance for planners, architects, and engineers in the retrofitting of historic and culturally significant adobe structures. Act on promotion of seismic retrofitting of buildings. Most losses of lives in the earthquakes in developing countries have occurred due to collapse of buildings that are mostly nonengineered. It is evident that the building can withstand the seismic action if and only if r. Though not applicable to all building types, the document also discusses some costeffective strengthening schemes for existing older buildings identified as seismically deficient during the evaluation process. The existing lowrise and mediumrise buildings in the world consist of large number of reinforced concrete rc frame buildings designed only for gravity loads lakshmanan 2007.
Conclusion rehabilitation of structures embroils contribution of high end technology, advanced skills and calculations. Retrofitting of existing structures with insufficient seismic resistance accounts for a major portion of the total cost of hazard mitigation. Seismic isolation technology is very effective to retrofit existing buildings while they are in service. Seismic evaluation and retrofit of existing buildings asce. Handbook on seismic retrofit of buildings pdf methodology to evaluate the seismic safety of a large inventory of buildings as the fema 310 report, handbook for the seismic evaluation of buildings. Pdf the seismic retrofitting of reinforced concrete buildings not designed to withstand seismic action is considered.
Guidelines for seismic retrofit of weakstory woodframe. Seismic retrofitting of an existing chinese building with passive energy dissipation devices according to different design procedures article pdf available may 2015 with 430 reads how we. Seismic assessment and retrofitting of buildings the only part in the whole set of 58 eneurocodes that deals with existing structures 1st standard in europe on seismic assessment and retrofitting of buildings no experience in european practice w codified seismic assessment and retrofitting. Furthermore, the structural rehabilitation of heritage buildings has implications of. Seismic retrofitting of buildings today, many countries are the victims of severe earthquakes resulting in the loss of lives of human being, animals, destruction of buildings, and many more. After briefly introducing how seismic action is described for design purposes, methods for assessing the seismic vulnerability of existing buildings are presented. This training curriculum has been developed for providing an extensive theoretical and practical knowledge to the masons about the seismic retrofitting techniques. Seismic design of buildings worked examples worked examples presented at the workshop ec 8. The time has come to begin concentrating on retrofitting the existing buildings 14.
Therefore, rapid enhancement of energy efficiency in existing buildings is. Seismic retrofit of historic building structures 1 and arash altoontash, ph. The first steps in any softstory seismic retrofitting are analyzing the structure and determining the best way to strengthen the property. Guide for the structural rehabilitation of heritage buildings. The construction price of retrofitted buildings is compared to the price of demolishing the existing and building a new building. This paper presents a comprehensive overview of the techniques available for the seismic retrofitting of adobe buildings.
This is a very responsible job to be done to save hazardous failure of structures due to deterioration. Seismic retrofitting techniques for historic adobe buildings. Seismic retrofitting is mainly done to provide existing structures with more resistance to seismic activity due to earthquake. Seismic evaluation and retrofit of existing buildings describes deficiencybased and systematic procedures that use performancebased principles to evaluate and retrofit existing buildings to withstand the effects of earthquakes. This volume focuses solely on improving the seismic performance of existing buildings and other structures.
National disaster management guidelines seismic retrofitting of deficient buildings and structures a publication of the national disaster management authority, government of india. Consequently, it is expected that configuration 3 will offer a better seismic retrofitting solution for rc buildings. This study shows how to model a building in computer software and. The construction of buildings and their operation contribute to a large proportion of total energy enduse worldwide.
It aims to strengthen a structure to satisfy the requirements of the current codes for seismic design. Improving the seismic performance of existing buildings and. Innovative materials for seismic and energy retrofitting of the. Thus, it is of critical importance that the structures that need seismic retrofitting are identified correctly, and an optimal retrofitting is conducted in a cost effective fashion.
That said, here are some basic approaches to retrofitting applied to various types of structures found to be vulnerable to damage or collapse in a major earthquake. Researchers hope to give building owners a number of different options at a variety of price points to. Indian buildings built over the past two decades are deficient because of items b, c, and d above. Download pdf the principles of seismic retrofit refer to the goals, objectives and steps. A survey of methods and techniques used for seismic. Health monitoring of structures use of sensors building instrumentation. The results generated by the adopted retrofitting techniques must fulfill the minimum requirements on the buildings codes, such as deformation, detailing, strength, etc.
Seismic assessment and retrofitting of existing buildings, according to the eurocode 8 part 3. Retrofitting of concrete course documentation structures. Therefore, certain principles are illustrated with applications to existing buildings. Handbook on seismic retrofit of buildings pdf click here seismic retrofit of historic buildings is as much an art as it is a science. Recent development of seismic retrofit methods in japan. Seismic evaluation and strengthening of existing buildings. The design technologies and building materials and methods that went into the original construction of these buildings are often drastically different from their. Baseisolation systems for the seismic retrofitting of r. Oct 21, 2014 retrofitting old buildings to make them earthquake safe. It analyzes these techniques viability from a structural engineering. Seismic conceptual design of buildings basic principles for. Retrofitting buildings for flood risk 23 to best understand a buildings flood risk and opportunities for adaptation, one must be able to identify the building typology and specific flood risks, the construction methods best suited to protect the structure, as well as the appropriate codes and regulations that control adaptation techniques. General a higher degree of damage in a building is expected during an earthquake if the seismic resistance of the building is inadequate. Also, changes in service conditions, often made arbitrarily, may lead to substantial changes in the structural behaviour resulting in a degradation of the.
Rehabilitation and retrofitting of structures notes rrs. If instead, r building is vulnerable to the design earthquake. Aisc rehabilitation and retrofit guide a reference for historic shapes and specifications cover d815. Analysis seismic retrofitting of building using sap2000. It is being written to help contractors and engineers. Seismic retrofitting of historical buildings request pdf. Those new to seismic rehabilitation will find this collection to be an excellent introduction to the core issues. Horizontal forces of earthquakes cause damage to historic structures.
Review of documents on seismic strengthening of existing. Earthquake an earthquake also known as a quake, tremor or tembloris the result of a sudden release of energy in the earths crustthat creates seismic waves. The contribution of existing buildings in regards to sustainability should not be underestimate. Analytical study on seismic retrofitting of reinforced. Seismic stabilization of historic structures 19901996 in 1990, the getty conservation institute initiated two projects to research and develop methods to provide seismic stabilization for historically and culturally significant buildings located in earthquake regions. Manual on retrofitting of existing vulnerable school buildings. Among various methods of retrofitting, the most suitable method for a particular building can be identified after performing a structural assessment.
The research paper published by ijser journal is about retrofitting process of an existing building with respect to seismic consideration in bangladesh, published in. Unreinforced masonry buildings urm law and of recent legislation, icon for file of type application pdf. Retrofitting process of an existing building with respect. Retrofitting and refurbishment processes of heritage. Correctly explain the fundamental difference between new design standards and the standard for evaluation and retrofit of existing buildings. They should be models in providing examples of quality education and the. Review of seismic strengthening of buildings iitkgsdmaeq07v1.
The text outlines the fundamental conservation principles and preparatory steps in the design of a plan. Seismic retrofitting approaches to 5 common building types. Seismic stabilization of historic structures 19901996. For the past 3 years the ascesei standards committee on seismic rehabilitation has been working to combine asce. The seismicity, seismism or seismic activity of an arearefers to the frequency, type and size of earthquakesexperienced over a period of time. Seismic retrofitting definition, techniques using modern. Historical buildings and town quarters are an integral part of the european cultural heritage.
Retrofitting of historical buildings requires multiple. Manual on retrofitting of existing vulnerable school buildingsassessment to retrofitting part i 4 2. Accordingly, configuration 3 is selected for the retrofitting of the buildings used in this. Catolica del peru to form the seismic retrofitting project srp. Successfully use asce 41 tier 1 screening to identify common seismic deficiencies with various types of older buildings. Seismic isolation retrofit of a prefectural government office building. Pdf seismic retrofitting of an existing chinese building. Structural engineers and contractors have to weigh several factors when deciding the best way to approach such a project. Design objective retrofitting a historic structure in salt lake city to improve its ability to withstand seismic events can be carried out while minimizing negative impacts upon historic features and building materials. Introduction earthquake creates great devastation in terms of life, money and failures of structures. There are various ways of retrofitting these buildings so as to mitigate the effect of future earthquake. Earthquake load is generated from the site seismicity, mass of the structures, important of buildings, degree of seismic resistant, etc. Many existing buildings do not meet the seismic strength requirement. The findings from the analyses of more refined 3d solid models are in good agreement with those from the analyses of the 2d models.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Among all the methods of seismic retrofitting, particular attention was devoted to the method which was based on stiffness reduction. Review of retrofitting methods to reduce seismic vulnerability of buildings, with particular reference to hospitals and medical facilities dina dayala, carmine galasso, stylianos minas and viviana novelli june 2015. However, such buildings are often not very energy efficient and. Standards design rules qfactors for timber structures proposal structuraltype dcm dch xlambuildings 2 3. Retrofitting design of building structures crc press book. Yes, you can remain in your unit if the work will not make your unit untenantable or. Pdf seismic retrofitting techniques for historic adobe buildings. This thesis also intends to give out the fundamental notions in part 1 of eurocode 8, which are useful for the assessment and retrofit of buildings. Planning and engineering guidelines for the seismic. Betec proposes that addressing the energy efficiency of our existing building stock directly addresses three crises facing the global community, climate change, energy security and the financial crisis. Softstory softstory structures are common among apartment buildings, characterized by open parking on the ground floor and dwelling units built above.
Retrofitting with externally bonded advanced composites fibre reinforced polymers frps, to which the present bulletin is devoted, is cleaner and easier to apply than conventional retrofitting. A companion volume to seismic stabilization of historic adobe structures. Proposed methodology is explained on the example of two buildings with the explanation of performed strengthening methods. During the trials, the infrared images were collected as. Jan 29, 2016 civilax is the knowledge base covering all disciplines in civil engineering. The seismic and energy retrofitting of existing european buildings with innovative materials is addressed in this. A benefitcost model for the seismic rehabilitation of buildings. Seismic retrofitting techniques for concrete structures. Your landlord is permitted to do construction work.
Seismic evaluation and retrofit of existing buildings. Assessment of prototype buildings etty conservation institute 4. More studies are needed to evaluate the effectiveness of the baseisolation in seismic retrofitting of reinforced concrete r. Manual on retrofitting of existing vulnerable school buildingsassessment to retrofitting part i i preface schools are institutions providing an education as well as a common place for community gatherings and meetings. Retrofit of building enclosures for energy efficiency. Once the decision is made, seismic retrofitting can be performed through several methods with various objectives such as increasing the load, deformation. The analysis for seismic retrofitting of buildings of reinforced concrete buildings not designed to withstand seismic action is considered.
Seismic evaluation and retrofit of existing buildings standards. The principles and practice of effective seismic retrofitting. We aim to close the gap to the industry by improving the awareness about latest trends in civil engineering. In the building sector, most energy is consumed by existing buildings while the replacement rate of existing buildings by the newbuild is only around 1. This nextgeneration standard combines the evaluation and retrofit process and puts forth a threetiered process for. Analysis for seismic retrofitting of buildings project. Seismic qualification eventually leads to retrofitting of the deficient structures. In the design of retrofitting approach, the engineer must comply with the building codes.
In japan, more than 17 existing buildings has been executed or under planning of retrofit. Further on different structural materials, building techniques and seismic retrofitting methods, which are used for residential buildings, will be. Sengupta, handbook on seismic retrofit of buildings. Under such circumstances, seismic qualification of existing buildings has become extremely important. Earthquake mitigation is an important field of study from a long time now. Retrofitting old buildings to make them earthquake safe. To ensure the safety and security of a building, employees, structure functionality, machinery and inventory. The main office building of the municipal government of yamanashi prefecture, japan, was retrofitted with a seismic isolation system as a measure against. Seismic evaluation of 32 industrial buildings by screening process and analysis markus wernli1, carlos e. Conventional methods for seismic retrofit of building structures are. The retrofitting of existing buildings for seismic criteria by christa besing b. The need for seismic retrofitting of an existing building can arise due to several reasons like.
Essential to reduce hazard and losses from nonstructural elements. However, it is quite clear that they may also be used for the evaluation and possible upgrading of existing buildings. The retrofitting of existing buildings for seismic criteria. Concept of retrofitting retrofitting is technical interventions in structural system of a building that improve the resistance to earthquake by optimizing the strength, ductility and earthquake loads. It analyzes these techniques viability from a structural engineering standpoint, and evaluates their suitability in the context. Calculations and detailed design are only marginally introduced. The technique of infillingadding new shear walls is often regarded as the best and simple. Seismic retrofitting of deficient rc buildings concept of pushover analysis sudhir k. Seismic retrofit of building structures slideshare. Analysis for seismic retrofitting of buildings abstract. An innovative method for the seismic retrofitting of. Construction failures and innovative retrofitting mdpi.
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