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Development of Seismic Isolation Technology for the next-Generation lWRs in Japan

Posted by: david-smith - 06-04-2012, 12:03 PM - Forum: Journals, Papers and Presentations - No Replies

Development of Seismic Isolation Technology for the next-Generation lWRs in Japan

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Seismic demands on secondary systems in base-isolated nuclear power plants

Posted by: david-smith - 06-04-2012, 11:58 AM - Forum: Journals, Papers and Presentations - No Replies

Seismic demands on secondary systems in base-isolated nuclear power plants

SUMMARY
Numerical models of a sample nuclear power plant (NPP) reactor building, both conventionally constructed
and equipped with seismic protective systems, are analysed for both safe shutdown and beyond-designbasis
earthquake shaking at two coastal sites in the United States. Seismic demands on secondary systems
are established for the conventional and seismically isolated NPPs. The reductions in secondary-system
acceleration and deformation demands afforded by the isolation systems are identified. Performance spaces
are introduced as an alternate method for evaluating demands on secondary systems. The results show
that isolation systems greatly reduce both the median and dispersion of seismic demands on secondary
systems in NPPs. Copyright q 2007 John Wiley & Sons, Ltd.
Received 5 October 2005; Revised 15 April 2007; Accepted 17 April 2007
KEY WORDS: nuclear power plant; secondary systems; seismic base isolation; viscous dampers; performance
spaces

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4S Seismic Base Isolation Design Description

Posted by: david-smith - 06-04-2012, 11:53 AM - Forum: Journals, Papers and Presentations - No Replies

4S Seismic Base Isolation Design Description

This report describes the seismic base isolation (SBI) design of the 4S reactor building for
U.S. Nuclear Regulatory Commission (NRC) review as part of the pre-application process
toward eventual Design Approval (DA). In the expectation that 4S will be constructed in the
U.S., the design is intended to meet codes and regulations in the U.S. Currently, there are no
codes and regulations specifically for the application of seismic base isolation to nuclear power
plants in the U.S. Therefore, the present 4S seismic base isolation design is based not only on
existing U.S. codes and regulations, but also on a Japanese guideline for the application of
seismic base isolation to nuclear power plants.
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The file is OCR,there are rare articles in Base Isolated Nuclear Plants,and I hope it Helps Dear CIVILEA Users.

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Design and Technical Guideline of Seismic Isolation Structure for Nuclear Power Plant

Posted by: david-smith - 06-04-2012, 11:36 AM - Forum: Archive - No Replies

Please if anyone have the following Document in ENGLISH share to us:

Design and Technical Guideline of Seismic Isolation Structure for Nuclear Power Plant, JEAG 4614-2000,Japan Electric Association (JEA), Nuclear Standard Committee of JEA,
The reference website is (but have that in Japanese language not English):

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Architectural Utilities 3 - Lighting and Acoustics

Posted by: cordoba123 - 06-03-2012, 11:41 PM - Forum: Architecture Books - Replies (1)

Architectural Utilities 3 - Lighting and Acoustics

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Architectural Utilities 2 - Electrical and Mechanical Equipment

Posted by: cordoba123 - 06-03-2012, 09:21 PM - Forum: Architecture Books - Replies (1)

Architectural Utilities 2 - Electrical and Mechanical Equipment

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Plastic Design of Low Rise Frames

Posted by: leetse - 06-03-2012, 08:32 PM - Forum: Archive - No Replies

	Hello does anyone have the following ebook? Full title: Plastic Design of Low Rise Frames Publisher: Collins (July 1985) Language: English ISBN-10: 0003830454 ISBN-13: 978-0003830453

Architectural Utilities 1 - Plumbing and Sanitary

Posted by: cordoba123 - 06-03-2012, 08:19 PM - Forum: Architecture Books - Replies (1)

Architectural Utilities 1 - Plumbing and Sanitary

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Alternate Path method in progressive collapse analysis

Posted by: hich - 06-03-2012, 05:51 PM - Forum: Civil Engineering MSc and PhD thesis - Replies (2)

Alternate Path method in progressive collapse analysis: Variation of dynamic and non-linear load increase factors

As a result of the increasing number of terrorist attacks registered against American facilities in the United States or abroad, United States government agencies continue to improve the design of their buildings to make them safer and less vulnerable to terrorist attacks. One of the factors typically considered in designing safer buildings and structures, is their ability to prevent total collapse after the loss of load-carrying components (Progressive Collapse) resulting from a terrorist attack. The consequences of not having a building capable of reducing the potential for progressive collapse could be catastrophic, as it was the case of the Oklahoma City bombing in 1995 where 42% of the Alfred P. Murrah Federal Building was destroyed by progressive collapse and only 4% by the explosion or blast. This attack claimed 168 lives and left over 800 injured. Over the last 10 years, two United States government agencies have developed guidelines for the design of their structures to resist progressive collapse: (1) The General Services Administration, "Progressive Collapse Analysis and Design Guidelines," (GSA Guidelines) and (2) The Department of Defense Unified Facilities Criteria 4-023-03 "Design of Buildings to Resist Progressive Collapse" (UFC 4-023-03). Within both approaches, the main direct design procedure is the Alternate Path (AP) method, in which a structure is analyzed for collapse potential after the removal of a column or section of wall. Different analytical procedures may be used, including Linear Static (LS), Nonlinear Static (NLS), and Nonlinear Dynamic (NLD). Typically, NLD procedures give better and more accurate results, but are more complicated and expensive. As a result, designers often choose static procedures, which tend to be simpler, requiring less labor. As progressive collapse is a dynamic and nonlinear event, the load cases for the static procedures require the use of factors to account for inertial and nonlinear effects, similar to the approach used in ASCE Standard 41 "Seismic Rehabilitation of Existing Buildings" (ASCE 41). A number of inconsistencies have been indentified in the way the existing guidelines applied dynamic and non-linear load factors to their static approaches. As part of an existing effort to update the existing guidelines, this study used SAP2000 to perform several AP analyses on a variety of Reinforced Concrete and Steel Moment Frame buildings to investigate the magnitude and variation of the dynamic and non-linear load increase factors. The study concluded that the factors in the existing guidelines tend to yield overly conservative results, which often translate into expensive design and retrofits. This study indentified new load increase factors and proposes a new approach to utilize these factors when performing AP analyses for Progressive Collapse.

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soil-structure interaction- from rules of thumb to reality (ripped from Google)

Posted by: david-smith - 06-03-2012, 05:18 PM - Forum: Foundation & Geotechnics in general - Replies (3)

soil-structure interaction-from rules of thumb to reality

the 18th NZGS geotechnical symposium on soil-structure interaction.

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The file ripped from Google,many missing pages included.

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