All issues
Predecessor
Volume 42, Issue 7
Displaying 1-7 of 7 articles from this issue
- |<
- <
- 1
- >
- >|
-
T. Kabeyasawa2004 Volume 42 Issue 7 Pages 3-8
Published: July 01, 2004
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESS“Guidelines for Performance Evaluation of Earthquake-Resistant Reinforced Concrete Buildings (Draft)” was published from Architectural Institute of Japan (AIJ) in January 2004. The report outlines the guidelines. The guidelines proposed a method for evaluating actual seismic performance level of a reinforced concrete building, which has been designed based on an appropriate design guidelines. The seismic performance level is expressed with the basic seismic capacity index in the standard deterministic procedure, which is defined as the amplitude ratio of the limit earthquake intensity to the standard earthquake intensity for each limit state, when the estimated response of the structure attained to the limit state. The limit states of the structures are selected on the inelastic load-deformation curve based on the residual damage levels of members as four levels : (1) serviceability, (2) reparable I, (3) reparable II, and (4) safety. Probabilistic evaluation of the seismic performance is also presented as an additional procedure. Performance levels are expressed as the excessive probability of the response over the limit state within the design service life of the building considering deviations of earthquake intensity, response estimation, and limit state evaluation. Practical evaluation methods for the demands and the limit states are presented in the guidelines, which are based on recent experimental and analytical research.View full abstractDownload PDF (1250K) -
T. Shimazu2004 Volume 42 Issue 7 Pages 9-14
Published: July 01, 2004
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSThis paper presents the results of survey on the international role of seismic technology in reducing human losses due to building collapses in many earthquake-prone countries.
The items dealt with are as follows : 1. Historical survey on human losses due to earthquakes. 2. Discussions of measured high values of PGA (Peak Ground Acceleration) and PGV (Peak Ground Velocity) in relation with seismic intensity scales (JMA and MM scales). 3. Comparison of seismic design code levels. 4. Introduction of case studies on prediction of building collapse ratios versus PGA or MM scales. 5. Introduction of key points in securing the seismic safety of masonry or reinforced concrete building structures. 6. Discussion of human loss ratios versus national income levels. Finally, the international development as well as spreads of high seismic technology, such as that of Japan is greatly encouraged.View full abstractDownload PDF (1198K) -
M. Maeda, Y. Ishii, H. Igawa, Y. Higo2004 Volume 42 Issue 7 Pages 15-23
Published: July 01, 2004
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSIncinerated ash generated from the incineration of sewage sludge has been recycled for use in concrete for some time. However, the quantity used for recycling has been limited. In expectation for a wider use and commercialization, the authors have conducted further quality improvements on incinerated ash. This has led to the reduction of harmful influences to the workability, and stability in the quality of concrete. At the same time, it has been possible to clarify the strength development properties related to the pozzolanic reactivity of the improved incinerated ash.View full abstractDownload PDF (20563K) -
S. Kajio, H. Nakamura, E. Noda, D. Nakahara2004 Volume 42 Issue 7 Pages 24-31
Published: July 01, 2004
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSConcrete pavement using the porous concrete is considered as the promising technique, because it has the permeability and drainage ability as well as its durability. Based on the various executed efforts about material and construction method, the basic technology meeting the required performance has been almost established. In this paper, after the quality and the performances under the traffic of the roads are summarized, the advantages of this pavement like durability, driving conformability in a rainy day, low-noise surface and so on are discussed.View full abstractDownload PDF (18483K) -
E. Saito, K. Fukudome, T. Idemoto, T. Okabe2004 Volume 42 Issue 7 Pages 32-37
Published: July 01, 2004
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSWhile effective use of coal ash from coal fired power plant is called for, the new solidified ground construction technology using the fluidizing phenomenon of coal-ash was developed. This is the technique of making material fluidize in large quantities in field by adding vibration from top of leveled coal ash mixture which spreaded in layers, and may lead to extensive recycling of coal ash. In development, the vibrating conditions for fluidizing and mixture of materials were examined, and the validity of this method was shown by applying to real-scale test construction.View full abstractDownload PDF (24104K) -
[in Japanese], [in Japanese], [in Japanese]2004 Volume 42 Issue 7 Pages 39-45
Published: July 01, 2004
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESS -
[in Japanese], [in Japanese], [in Japanese]2004 Volume 42 Issue 7 Pages 46-53
Published: July 01, 2004
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSDownload PDF (3347K)
- |<
- <
- 1
- >
- >|