OS ANGELES INVENTORY OF NONDUCTILE CONCRETE BUILDINGS FOR ANALYSIS OF SEISMIC COLLAPSE RISK HAZARDS
Author: T. Anagnos, M. C. Comerio, C. Goulet, H. Na , 4 J. Steele, and J. P. Stewart | Size: 397 MB | Format:PDF | Quality:Unspecified | Publisher: The 14 th World Conference on Earthquake Engineering October 12-17, 2008, Beijing, China | Year: 2008 | pages: 8
Nonductile concrete buildings arguably represent the greatest seismic life safety hazard in many urban centers world-wide because of their collapse potential. This paper documents the development of an inventory to
evaluate the risk from the approximately 1600 potentially nonductile concrete buildings in the City of Los Angeles. Using state-of-the-art spatial databases, publicly available online resources, and building inspections, we record the geographic distribution of these buildings as well as their general characteristics with respect to structural configurations and usage. We describe the diverse array of data sources used to develop the inventory, which provides information on building size, age, type, usage, and ownership type. We particularly emphasize the data collection methodologies developed and utilized for this project and the significant challenges associated with data collection of this type. This information is being utilized in ongoing collapse risk studies related to nonductile concrete construction in Los Angeles and to guide a testing/simulation program that will ultimately lead to more accurate loss estimation tools.
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Influence of Structural Parame ters to the Seismic Collapse Resistance of RC Frames in 7-degree Seismic Fortification Zone
Author: Dai-yuan Tang. Xin-zheng Lu, Lie-ping Ye, Wei Shi | Size: 432 KB | Format:PDF | Quality:Unspecified | Publisher: Proc. 4th Int. Conf. on Protection of Structures Against Hazards, Oct. 2009, Beijing, China: pp. 331-338. | Year: 2009 | pages: 8
Currently in China structural seismic design mostly focuses on design and
verification of member strength under minor earthquake. However, during actual
earthquakes, structural systems play a more important role in seismic collapse
resistance. Therefore, in order to find the influence of structural parameters to the
seismic collapse resistance, this paper designs 24 reinforced concrete (RC) frames
in 7-degree seismic fortification zone according to the Chinese Seismic Design Code,
which have different spans, storey heights and storey numbers. Incremental dynamic analysis (IDA), recommended by ATC-63 Report, is implemented for the frames based on fiber-beam element model to evaluate their seismic collapse resistances.
The result shows that structural parameters have a great influence to seismic collapse resistance. The seismic collapse resistance of frames designed according
to the Chinese Seismic Design Code with different span has obvious difference. The
result could be referred for the further study of seismic collapse resistance.
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Three-Dimensional Seismic Collapse Analysis of Wooden Houses Using Rigid Body-Spring Method
Author: E. A. Tingatinga, H. Kawakami* and S.M. Shrestha | Size: 804 KB | Format:PDF | Quality:Unspecified | Publisher: The Open Construction and Building Technology Journal, 2008, 2, 116-123 | Year: 2008 | pages: 8
In Japan, the past few decades revealed the vulnerability of wood-framed residential buildings to strong earthquakes. The Kobe earthquake in 1995 caused tremendous loss of lives resulting from the collapse and damage of such structures that significantly affected economic condition. This disaster motivated many researchers to study the mechanisms of collapse of engineering structures in order to prevent further loss of lives in the future. In this paper, an innovative methodology in simulating the dynamic response of wood-framed buildings, for purposes of seismic performance assessment and retrofitting, is presented. The proposed method, which can simulate inelastic behavior of structures, is capable of showing realistic progressive collapse mechanisms and accurate seismic response of structures. The sequence of analyses and results in the form of computer animations are used to help building owners gain a better understanding of the seismic performance of their buildings before and after the structural reinforcement. Applications to real wood-framed residential buildings were used to show the effectiveness of the methodology in seismic performance assessment as well as retrofit plan development.
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THE EFFECTIVENESS OF SEISMIC BUILDING CODE PROVISIONS ON REDUCING THE COLLAPSE RISK OF REINFORCED CONCRETE MOMENT FRAME BUILDINGS
Author: Abbie B. Liel , Curt B. Haselton , and Gregory G. Deierlein | Size: 478 KB | Format:PDF | Quality:Unspecified | Publisher: 4th International Conference on Earthquake Engineering Taipei, Taiwan | Year: October 12-13, 2006
This paper examines the effectiveness of building code provisions in mitigating seismic collapse risk by quantifying the collapse risk of four reinforced concrete framestructures. First, an existing and a
new reinforced concrete moment frame building, designed for seismic conditions in coastal California, are compared to illustrate improvements in building code provisions over time, asmeasured in terms of reduction in collapse risk. This comparison is based on four-story reinforced concrete moment frame structures designed to be representative of a) pre-1970 non-ductile reinforced concrete construction and b) modern, ductile reinforced concrete construction. A second group of four-story reinforced moment frame structures is also considered, including modern code-conforming a) special, b) intermediate, and c) ordinary moment frames. These structures are designed for three different sites and the strength and detailing requirements are consistent with what is permitted for each site’s seismic hazard. From analysis of these structures, the uniformity of safety provided by seismic building code provisions across regions of varying seismicity is evaluated.
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As we said you before this year is different year for CivilEA, we want to add new features for CivilEA`s users. we want to extend our activity, specially we want to bold the learning here.
at first we want to open new section with name "eLearning", at this section selected users can post their learnings there and other users can ask problems and solve them.
first lesson are in progress and will be post soon.
if any user can help us to improve this section, please post in private section, and tell us the subjects that he/she can activity on it, we`ll give him ability to post there.
CivilEA hahas new and unique news ....
SOOOOOON...
Posted by: tolin - 04-18-2014, 07:40 AM - Forum: Archive
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Article/eBook Full Name: Materials and Structures
Author(s): R. Whitlow
Edition: 2nd
Publish Date: April 29, 1991
ISBN: 978-0582066984
Published By: Chartered Institute of Building
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1- Design and measurement of piled-raft foundations
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2- Case study of a full-scale load test of a piled raft with an interposed layer for a nuclear storage facility
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Author: Eugenio Pellicer, Víctor Yepes, José C. Teixeira and Helder P. Moura | Size: 19 MB | Format:PDF | Quality:Unspecified | Publisher: Wiley-Blackwell | Year: 2013 | pages: 330 | ISBN: 1118539575, 9781118539576
The management of construction projects is a wide ranging and challenging discipline in an increasingly international industry, facing continual challenges and demands for improvements in safety, in quality and cost control, and in the avoidance of contractual disputes.
Construction Management grew out of a Leonardo da Vinci project to develop a series of Common Learning Outcomes for European Managers in Construction. Financed by the European Union, the project aimed to develop a library of basic materials for developing construction management skills for use in a pan-European context. Focused exclusively on the management of the construction phase of a building project from the contractor’s point of view, Construction Management covers the complete range of topics of which mastery is required by the construction management professional for the effective delivery of new construction projects.
With the continued internationalisation of the construction industry, Construction Management will be required reading for undergraduate and postgraduate students across Europe
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Written by a leader on the subject, Introduction to Geotechnical Engineering is first introductory geotechnical engineering textbook to cover both saturated and unsaturated soil mechanics. Destined to become the next leading text in the field, this book presents a new approach to teaching the subject, based on fundamentals of unsaturated soils, and extending the description of applications of soil mechanics to a wide variety of topics.
This groundbreaking work features a number of topics typically left out of undergraduate geotechnical courses
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