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Volume 44 (2003)
- Issue 4 Pages 133-
- Issue 3 Pages 99-
- Issue 2 Pages 53-
- Issue 1 Pages 4-
Volume 44, Issue 4
Displaying 1-7 of 7 articles from this issue
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PAPERS
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Masaru OKAMOTO, Tsutomu SATO, Yukihiro TANIMURA, Toshiyuki KUROIWA2003 Volume 44 Issue 4 Pages 136-141
Published: 2003
Released on J-STAGE: July 20, 2006
JOURNAL FREE ACCESSIn order to apply high-strength materials to RC members, it is necessary to clarify and reflect in the design their basic properties such as flexural strength and ductility. For this purpose, cyclic loading tests were carried out on RC column members made of high-strength materials. This paper describes the applicability of ordinary design codes to RC members made of high-strength materials, based on the load-displacement relationship obtained by cyclic loading tests. As a result of examination and analysis, it has become clear that the load-displacement relationship of members made of high-strength materials can be evaluated using ordinary design codes by appropriate consideration of material strength characteristics.View full abstractDownload PDF (249K) -
Ichiro SUGIMOTO, Kiyomitsu MURATA, Hisao NISHIDA, Chikao HIRAOKA2003 Volume 44 Issue 4 Pages 142-146
Published: 2003
Released on J-STAGE: July 20, 2006
JOURNAL FREE ACCESSThe corrugated steel web PC box bridge is one of many types of hybrid steel and concrete structure that have recently been developed. However, this type of bridge has not yet been adopted for railway bridges in Japan. In this paper, we investigate the fatigue durability of joints connecting a corrugated steel web plate with a concrete slab. As a result, it was verified that two different joints, the constraint reinforced bar type and the tie plate type, have sufficiently high fatigue durability.View full abstractDownload PDF (226K) -
Hiroshi HAYA, Xiu LUO, Tomoaki INABA, Taketo UOMOTO2003 Volume 44 Issue 4 Pages 147-153
Published: 2003
Released on J-STAGE: July 20, 2006
JOURNAL FREE ACCESSAlthough impact acoustic measurement is often applied to nondestructive inspection of concrete structures, the evaluation of a structures integrity normally relies purely on the human ear. In order to develop a method that can assess impact sounds quantitatively, the authors have conducted a series of impact acoustic experiments under distinct boundary and material conditions. By using wavelet analysis techniques, it has been shown that this measurement method is capable of assessing concrete structures degrees of deterioration objectively. This paper describes the verification of the impact acoustic method and case studies of its application.View full abstractDownload PDF (629K) -
Xiu LUO, Hiroshi HAYA, Tomoaki INABA, Tomoki SHIOTANI, Yasuhiro NAKANI ...2003 Volume 44 Issue 4 Pages 154-159
Published: 2003
Released on J-STAGE: July 20, 2006
JOURNAL FREE ACCESSIn order to develop an efficient method for the maintenance of railway structures, acoustic emission (AE) techniques were focused on. The characteristics of secondary AE induced by train loading were investigated and experiments using model piles and in-situ AE monitoring of in-service railway bridges conducted, from which it was demonstrated that the proposed method is practicable enough to detect invisible defects. A new index, known as RTRI (ratio of Repeated Train load at the onset of AE activity to Relative maximum load for Inspection period) was proposed for the evaluation of structural integrity based on the results of in-situ AE monitoring.View full abstractDownload PDF (580K) -
Shinji KONISHI, Yoshiyuki KOJIMA, Kiwamu TSUNO2003 Volume 44 Issue 4 Pages 160-165
Published: 2003
Released on J-STAGE: July 20, 2006
JOURNAL FREE ACCESSApplication of shotcrete tunneling has increased in urban areas of Japan as a result of technological development, such as that of large-scale fore -piling method, and countermeasure work. However, there had been no well-established design methods for urban shotcrete tunnels. Then, a new design standard for them was established in March 2002, based on the investigation and analysis of several design and construction experiences. This paper describes the concept and some aspects of this new design standard.View full abstractDownload PDF (308K) -
Yasushi TAKEI, Seiji YAMADA, Tsuneo HASUDA2003 Volume 44 Issue 4 Pages 166-173
Published: 2003
Released on J-STAGE: July 20, 2006
JOURNAL FREE ACCESSThis report introduces a new structural design method for over-track low-rise buildings without footing beams. We investigated the structural performance of existing overtrack buildings and developed an understanding of the seismic response and load-carrying capacity of a number of building models by means of analytical studies, the results of which were reflected in the revised "Standard for Structural Design of Over-Track Low-Rise Buildings." In the new design method, push-over analyses of soil-structure interaction models are used to clarify the seismic performance of buildings. As a result, it is possible to construct buildings without footing beams perpendicular and parallel to tracks.View full abstractDownload PDF (304K)
REVIEW
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Osamu MURATA2003 Volume 44 Issue 4 Pages 133-135
Published: 2003
Released on J-STAGE: July 20, 2006
JOURNAL FREE ACCESSThis paper briefly introduces the new railway structures technology currently being developed at RTRI. This includes design standards, maintenance and cost-saving construction technology, and that aimed at making station environments pleasanter.View full abstractDownload PDF (226K)
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