Available online, in print, and on cd through the fema library. Seismic retrofitting techniques are required for concrete constructions which are vulnerable to damage and failures by seismic forces. It is utmost importance for historic monuments, areas. Oct 01, 2015 seismic retrofitting techniques of rcc 1. Seismic risk factors courtesy of utah division of state. Photographic evidence is provided to illustrate both successful and unsuccessful examples of retrofit techniques that had been installed in christchurch urm buildings before the 4th september 2010 darfield earthquake.
We aim to close the gap to the industry by improving the awareness about latest trends in civil engineering. Introduction of retrofitting building the aftermath of an earthquake maneifests great devastation due to unpredicted seismic motion striking extensive damage to innumerable buildings varying degree i. The primary purpose of this document is to provide a selected compilation of seismic rehabilitation techniques that are practical and effective. Manual on retrofitting of existing vulnerable school buildingsassessment to retrofitting part i iv figure 40 retrofitting works for the trusses and roof providing proper materials and detailing 33 figure 41 finishing works painting, architectural gravel installation, etc 33 figure 42 retrofitting of sd padasuka 2 34. Several seismic retrofitting techniques are currently available and employed in practical applications, even though issues are still open or not completely solved by the same codes about the rational design of these retrofitting interventions. Earthquake load is generated from the site seismicity, mass of the structures, important of buildings, degree of seismic resistant, etc. Rehabilitation and retrofitting of structures notes rrs pdf notes. So seismic retrofitting is a collection of mitigation technique for earthquake engineering. Assessment of seismic retrofitting techniques of rc. Part 2 retaining structures, slopes, tunnels, culverts and roadways this report is available only in pdf format.
Seismic retrofitting technique figure 4 there are many seismic retrofit techniques available, depending upon the various types and conditions of structures. Study on methods and techniques of retrofitting ijert. Techniques for the seismic rehabilitation of existing buildings describes a wide range of seismic retrofitting techniques used for standard building types. The seismic evaluation process consists of investigating if the structure meets the defined. 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. Part 1 of this manual focuses on highway bridges, and is a replacement for the federal highway administration fhwa publication seismic retrofitting manual for highway bridges which was published in 1995 as report fhward94052. We are a onestop shop that performs everything from structural analysis of the building by a seismic engineer to retrofit completion. Seismic retrofitting is a collection mitigation techniques for earthquake engineering. Three techniques have been considered in a case study. Lakshmanan d20063 in this pushover analysis of the structures done by sap 2000. The retrofit techniques are also applicable for other natural hazards such as tropical cyclones, tornadoes, and severe winds from thunderstorms. Scribd is the worlds largest social reading and publishing site.
Seismic retrofit services srs retrofit san fernando valley. Seismic retrofitting manual for highway structures. We know that earthquake is a important field of study from long time. There are many seismic retrofitting techniques available, depending upon the various types and conditions of structures.
Retrofitting of existing structures with insufficient seismic resistance accounts for a major portion of the total cost of hazard mitigation. Retrofitting of concrete structures by externally bonded frps, with emphasis on seismic applications 2006. The main purpose of retrofitting restoration is to structurally treat the. Many new techniques like seismic isolation, supplemental damping and continuous fibre wrapping were implemented after the disaster out of which the fibre wrapping became the most popular method. Seismic retrofitting copy bearing mechanical chemistry.
House bolting, foundation bolting, cripple wall bracing, seismic retrofitting, foundation repairs, softstory retrofits, foundation. Pdf seismic retrofitting techniques for concrete structures. The first technique is to jacket the columns and increase their reinforcing bars in order to withstand larger seismic forces through 0. Pdf this paper presents a comprehensive overview of the techniques available for the seismic retrofitting of adobe buildings. This manual, which comprised of two parts, represents the most current statofpractice in assessing the vulnerability of highway structures to the effects of earthquakes, and implementing retrofit measures to improve performance. Seismic retrofitting copy free download as powerpoint presentation. Generally, the structural retrofit of concentrically braced frames improved the seismic resistance of the building and it can be considered in the retrofit of moment frame structures to prevent the risk of structural collapse under the design load with much more confidence. Seismic retrofitting building renovations technology and. Click download or read online button to get seismic risk assessment and retrofitting book now. The applications include different types of buildings, industrial structures, bridges, urban transport structures, marine structures and earth retaining. Overview of the seismic retrofitting manual for highway structures the seismic retrofitting manual for highway structures is a major revision of the federal highway administration publication seismic retrofitting manual for highway bridges, which was published in 1995 as report fhward94052. Badoux3 abstract in many seismically active regions of the world there are large numbers of masonry buildings. For buildings with large seismic deficiencies, a combination of conventional and frp strengthening techniques may prove to be an effective retrofitting solution. Mar 03, 2017 seismic retrofitting techniques for structurallysound bridges mar.
However, for detailed technical guidance on seismic retrofitting, reference should be made to fema 547 fema, 2006 which applies to all types of buildings and for all types of use and occupancy. Kobatake, technical research institute, obayashi corporation, japan abstract new retrofitting techniques using carbon fibers are presented. Seismic retrofitting techniques civil engineering community. The horizontal lateral shaking in earthquakes create the forces that can be damaging to our wood framed homes. Most of these buildings have not been designed for seismic loads. In the past thirty years, moderate to severe earthquakes occurs around the world every year. Introduction to retrofitting retrofitting is any change made to an existing structure to reduce or eliminate the possibility of damage to that structure from flooding, erosion, high winds, earthquakes, or other hazards. Optimal seismic retrofitting techniques for urm school. Pdf evaluation of seismic retrofitting techniques used in old. Seismic retrofitting definition, techniques using modern. Pdf seismic retrofitting techniques for historic adobe.
It analyzes these techniques viability from a structural engineering. Rehabilitation and retrofitting of structures notes rrs pdf. The seismic isolating method which reduces the effect on a building of the shake produced by an. Techniques of seismic retrofitting for concrete structures. Seismic risk assessment and retrofitting download ebook pdf. Seismic retrofitting of reinforced concrete buildings using. Seismic retrofit of framed buildings, fibrereinforcedpolymer structure, baseisolated structure, addeddamping structure, nonlinear dynamic analysis. The effect of surface preparation and the mismatch of the moduli of the repair material and substrate were studied. The seismic strengthening method which raises the intensity and modification performance of a building.
Recent innovative base isolation techniques seismic retrofitting of existing buildings of historical and cultural importance poses challenge for both designer and construction engineers on the ground of historical,economic aspects and more due to lack of. The term retrofitting is mainly used in context with the strengthening of weak buildings to make them strong enough to withstand seismic forces through various repairing methods. Nov 11, 2011 seismic retrofitting definition it is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes. Building materials used in seismic retrofitting should be located on the interior andor blended with existing architectural features. Seismic retrofitting techniques for concrete structures.
Click download or read online button to get the seismic design handbook book now. This manual, which is comprised of two parts, represents the most current stateofpractice in assessing the vulnerability of highway structures to the effects of earthquakes, and implementing retrofit measures to improve performance. Oct 08, 20 civilax is the knowledge base covering all disciplines in civil engineering. In fact, some that may seem at first appearance to be identical can display significant differences based on a number of factors, including structural composition, materials, the wear and tear on the building, even the composition of the soil beneath it. Seismic retrofit technology consists of three methods. Seismic retrofitting approaches to 5 common building types. Manual on retrofitting of existing vulnerable school buildingsassessment to retrofitting part i iv figure 40 retrofitting works for the trusses and roof providing proper materials and detailing 33 figure 41 finishing works painting, architectural gravel installation, etc 33 figure 42 retrofitting.
Seismic retrofitting house bolting, cripple wall bracing. This manual is being prepared in three separate volumes providing retrofitting guidelines for adobe structure, masonry structure and rcc structure covering both theoretical and practical aspects of retrofitting. The performancebased method has been used to that purpose. Pdf seismic retrofitting techniques for historic adobe buildings. The seismic and energy retrofitting of existing european buildings with innovative materials is. Assessment of prototype buildings etty conservation institute 4. Rehabilitation and retrofitting of structures notes rrs. Manual on retrofitting of existing vulnerable school buildingsassessment to retrofitting part ii ii contents preface i contents ii list of figures iii introduction 1 principle of retrofitting 3 vulnerability assessment for a novice 5 vulnerability assessment for an engineer 7 vulnerability assessment for a program person 10 various techniques on retrofitting 11. Pdf assessment of seismic retrofitting techniques of rc. Download pdf the principles of seismic retrofit refer to the goals, objectives and steps. It also provides certain aspects of computer software modeling against seismic loads and shows the necessity of seismic upgrading in a steel momentframe building. Rehabilitation and retrofitting of structures notes rrs notes pdf file to download are listed below please check it. 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.
Homes tend to fail in one of three ways all between the foundation and the first floor joists. The project includes the development of lowtech, costeffective seismic retrofitting techniques. It is of utmost importance for historic monuments, areas prone to. This site is like a library, use search box in the widget to get ebook that you want. Introduction earthquake creates great devastation in terms of life, money and failures of structures. View seismic retrofitting research papers on academia. Seismic retrofitting definition it is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes.
Innovative materials for seismic and energy retrofitting of the. For the collection of examples, buildings were selected to be as different and extensive as possible according to building use, structure type, ground type, seismic zone, and retrofit plan. Pdf optimal seismic retrofitting techniques for urm. Ibrahim mansour and others published assessment of seismic retrofitting techniques of rc structures using fragility curves find, read and cite all the research. We specialize in seismic retrofitting on commercial and residential soft story structures. The project includes the development of lowtech, costeffective seismic retrofitting techniques and recom.
Seismic risk assessment and retrofitting download ebook. The focus of this manual is on retrofitting buildings that are subject to flooding. Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes. As a practical and economical solution, the retrofit design involved replacement of the existing window frames with structural steel frames constructed from steel csections. This paper aims to study different seismic retrofitting techniques to test the reduction of the seismic vulnerability of unreinforced masonry buildings. It is shown how this analytical technique can be useful in deciding seismic retrofitting strategy and techniques. Index seismic retrofitting manual for highway structures. With better understanding of seismic demand on structures and with our recent experiences with large earthquakes near urban centers, the need of seismic retrofitting is well acknowledged. Also, changes in service conditions, often made arbitrarily, may lead to substantial changes in the structural behaviour resulting in a degradation of the. They should be models in providing examples of quality education and the.
The seismic design handbook download ebook pdf, epub. Part 2 of this manual provides guidance on the assessment and retrofitting of other typical highway structures. Pdf past earthquakes have emphasized the vulnerability of existing structures which did not satisfy modern seismic design requirements and current. Seismic retrofitting techniques for structurallysound bridges. It analyzes these techniques viability from a structural engineering standpoint, and evaluates their suitability in the context. This damage to structures in its turn causes irreparable loss of life with a large number of casualites. For existing reinforced concrete columns, a cfrp winding technique is. Sap 2000 evaluating the various repair strategies for improvement of the seismic. Some methods are additions of rc structural walls, use of steel bracings, seismic isolation, use of frp and supplemental energy dissipation devices dampers. Part 2 of this manual provides guidance on the assessment and retrofitting of other tyical highway structures. First, the sill plate can slide off of the foundation.
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