Faculty Profiles - TATEISHI Kazuo

Papers - TATEISHI Kazuo

Division display 221 - 240 of about 264 ／ All the affair displays >>

Simple method for estimating stress intensity factor by image analysis

kazuo Tateishi, Hiroto Oyamada, Taketo Uomoto

Proc. of the 5th Korea-Japan Joint Seminar on Steel Bridges page： 185-191 1999.10

Simple method to estimate stress intensity factor by image analysis Reviewed

Kazuo Tateishi,Hiroto Oyamada,Taketo Uomoto,Ichiro Adachi

Steel Construction Engineering Vol. 6 ( 23 ) page： 99-104 1999.9

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

A simple method to estimate the stress intensity factor was proposed. In this method, the displacement of the crack surface which could be directly related the stress intensity factor was measured by image analysis on a digital photograph recorded with a portable digital microscope. As a result of the accuracy verification by the fatigue test a CT specimen, it was shown that this method was available to estimate the stress intensity factor with good accuracy.

Strain Measurements on Concrete FIlled Steel Tube Members By Image Analsis Reviewed

Kazuo Tateishi,Kiyomitu Murata

Journal of Structural Engineering, JSCE Vol. 45A page： 1537-1544 1999.3

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

One of the main failure modes of Concrete Filled steel Tube( CFT )members is low cycle fatigue failure of the steel tube. In this study, as a fundamental study to estimate the low cycle fatigue strength of CFT members, strain measurements for the steel tube were carried out by using newly developed image analysis system which is three-dimensionaly deformed, so that the strain field around the buckling portion in the steel tube where a crack may be formed can be measured by the system. The
Results of strain measurements by the system were used to calculate the fatigue damage around the buckling portion and investigate effectiveness of the low cycle fatigue assessment for CFT members.

欠陥を有する異形鉄筋ガス圧接継手の強度特性 Reviewed

鈴木元敏、長野岳宏、舘石和雄、足立一郎

コンクリート工学年次論文報告集 Vol. 21 ( 3 ) page： 319-324 1999

Language：Japanese Publishing type：Research paper (scientific journal)

本研究では、欠陥を意図的に入れた圧接継手と健全な圧接継ぎ手から試験片を切出し、欠陥による不良接合面と健全な接合面の引張、疲労強度特性を実験的に明らかにした。また、内部欠陥の有無によるガス圧接継手の疲労強度の違いを実験的に明らかにした。さらに、弾塑性解析により、母材と圧接部のひずみ状態を求め、その結果と実験より得られた強度曲線から、ふくらみ径と疲労強度の関係を明らかにした。その結果、不良接合面の引張及び疲労強度は非常に弱く、ガス圧接継手においても疲労強度は著しく低下することが明らかとなり、今回の試験体では、圧接部は母材径の1.4倍以上必要であると判断できた。

Strain Behavior of Concretes Filled Steel Members under Cyclic Loading Reviewed

Kazuo Tateishi,Kiyomitu Murata

Proc.of the 7th EASEC page： 949-954 1999

Language：English

In this study, strain behavior of steel tube in concrete Filled steel Tube(CFT) member was investigated by a newly developed strain measuring system which was based on the photogrammetry technique and could be applied to an object even if local buckling deformation occurred in it. After the accuracy verification of the system by comparing with the strain date given from strain gauge, the system was applied to the loading test on CFT specimen, and unique characteristics of the strain field around the buckling portion of steel tube were clarified. The measured strain date were also used to assess the low cycle fatigue strength of the tube, and it was shown that the low cycle fatigue assessment was available for considering the fatigue criteria of CFT member

Failure Mechanisms of RC Piers with Termination of Reinforcement at Mid-height and Retrofitting by Alamid Sheet Reviewed

Masayuki Yamada,Chitoshi Miki,Kazuo Tateishi,Kenji Gondo

Journal of Structural Engineering Vol. 44A page： 1317-1324 1998.3

Language：Japanese Publishing type：Research paper (scientific journal)

In this paper, ductility of RC bridge pier with termination of reinforcement at mid-height was studied. To discuss the structural details to prevent shearing failure, reversed cyclic horizontal tests were carried out with some types of specimens. The specimens have different details, lateral tie`s interval, shape of cross-section, thickens of cover concrete and retrofitting by alamid sheet. As results, each specimens had distinctive failure processes. Especially the crack generated at the termination of reinforcement become diagonal shearing cracks. RC pier confined by alamid sheet increases its ductility and round cross-section is possible to much confinement than square cross-section.

Cope Hole Details for Improving Fatigue Strength Reviewed

Kazuo Tateishi,Chitoshi Miki,Katsuya Kajimoto

J. of Structural Mechanics and Earthquake Engineering, JSCE Vol. I-42 ( 584 ) page： 307-310 1998.1

Language：Japanese Publishing type：Research paper (scientific journal)

Altered cope hole details for improving fatigue strength proposed and their effects were examined by fatigue tests. It was shown that the detail in which the weld was quitted near the corner of cope hole and the end welded bead was finished by grindings, and the detail in which cope hope was filled up with welded bead, had higher fatigue strength than conventional cope hole details.

骨材界面組織が物質拡散に与える影響についての解析的研究 Reviewed

出口知史、舘石和雄、魚本健人

コンクリート工学年次論文報告書 Vol. 20 ( 2 ) page： 763-768 1998

Language：Japanese Publishing type：Research paper (scientific journal)

本研究は物質拡散の形状を検討することを目的とした。そこで非反応性である酸素拡散に関して、モンテカルロシュミレーションによる骨材配置を行う事によって骨材の界面組織の連結性を中心とした特性に注目しつつ有限要素法による二次元拡散プログラムを用いてシュミレートし検討を行った。その結果遷移帯領域の酸素拡散係数はセメントペースト領域の約50～100倍の値を示し、酸素拡散の形態は粒度分布や骨材量の変化に伴う遷移帯の連結が影響している可能性を示した。

鉄筋コンクリート柱における鉄筋の地震時ひずみ履歴に関する研究 Reviewed

舘石和雄、西田朱里、矢島哲司、魚本健人

コンクリート工学年次論文報告集 Vol. 20 ( 3 ) page： 277-282 1998

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

地震時に鉄筋コンクリート柱の鉄筋に生じるひずみ履歴を解析的に明らかにすることにより、鉄筋の疲労損傷度と、断面諸元、軸力の大きさや地震波の性質などとの関係について検討した。その結果、断面諸元の変化が鉄筋の累積疲労損傷度に与える影響は小さいこと、地震波の性質によって軸力が疲労被害に与える影響が大きく異なることが明らかとなった。さらに、実験的に得られた鉄筋の低サイクル疲労破壊発生条件と解析結果とを比較することにより、通常の条件下では実構造物に低サイクル疲労破壊が発生する可能性は小さいことを示した。

スカラップを有する厚板I型断面桁　現場溶接継手部の疲労強度 Reviewed

南邦明，三木千壽，舘石和雄

土木学会論文集 Vol. I-41 ( 577 ) page： 121-130 1997.10

Language：Japanese Publishing type：Research paper (scientific journal)

Ⅰ型断面桁を現場溶接する際、ウエブにスカラップを有するディテールとなるが、スカラップが存在することよりせん断変形が生じ局部的な応力集中が発生する。このため疲労強度の低い継手であり、JSSCの疲労設計指針ではこのディテールをG等級としている。本研究では、特にせん断の影響に着目するため複数のジャッキで位相を変えてせん断力の方向が変わるように載荷し、少主桁橋の現場溶接を想定し厚板フランジでの疲労強度を確認した。また、疲労強度を向上させるため、廻し溶接部をグライダー仕上げすることによる効果を明らかにした。これらの結果より、スカラップを有するI型断面を現場で溶接する構造ディテールの設計・製作上考慮すべきことがらを明確にした。

Fatigue strength of cope hole details in steel bridges Reviewed

Chitoshi Miki,Kazuo Tateishi

International Journal of Fatigue Vol. 19 ( 6 ) page： 445-455 1997.7

Language：English Publishing type：Research paper (scientific journal)

Cope holes found at the intersections of steel structural members to access crossing welds may cause high stress concentration and decrease the fatigue strength of the detail. In this study, fatigue strength and local stresses for cope hole details existing in I-section beams bent in- planes were investigated by fatigue tests, stress measurements and stress analyses. The experimental results showed the fatigue strength of cope hole details was extremely low due to the local stress around the cope holes. In particular, when shear deformation was induced in a gap of flange plate inside a cope hole, the local stress was greatly increased. Using an analytical approach, the relationship between the magnitude of local stress and some influential parameters was investigated and a simple method to estimate the local stress for cope hole details is propose

Fatigue Strength of the Joint between Diaphragms and Longitudinal Ribs in Box Section Girders Reviewed

Chitoshi Miki,Masakatu Shiozaki,Kazuo Tateishi,Harukazu Ohashi

J. of Structural Mechanics and Earthquake Engineering, JSCE Vol. I-39 ( 563 ) page： 35-40 1997.4

Language：Japanese Publishing type：Research paper (scientific journal)

Fatigue strength of the joint between diaphragms and longitudinal ribs on lower in box girder of suspension bridge was investigated by means of fatigue tests and stress analyses. Fatigue tests were carried of cope holes at the crossing joints. It was found that smaller cope hope was appropriate for reducing the local stress and increasing fatigue strength. However, when no cope hope existed, high stress concentration occurred at the flange plate inside of through rib fatigue strength became low.

Fatigue Design for Cope Hole Details in I-section Members of Steel Bridges Reviewed

Chitoshi Miki,Kazuo Tateishi

J. of Structural Mechanics and Earthquake Engineering, JSCE Vol. I-39 ( 563 ) page： 41-47 1997.4

Language：Japanese Publishing type：Research paper (scientific journal)

Local stresses around the cope hope in I-section members of steel bridges were investigated by finite element analysis in order to propose a simple method to estimate the stress concentration factor for the detail from geometrical parameters and loading conditions. Based on the results, fatigue design method for this detail including the influences of shear deformation of the flange plate inside of cope hole was proposed

鉄筋コンクリート橋脚の耐力・変形のエネルギー的評価

舘石和雄、山田真幸、三木千寿、瀬間　優、玉置一清

阪神・淡路大震災に関する学術講演論文集 page： 353-360 1997

境界要素法による高速移動荷重列に対する橋桁の動的応答解析の試み Reviewed

白旗弘実、三木千壽、舘石和雄

土木学会論文集 Vol. I-37 ( 549 ) page： 107-114 1996.10

Language：Japanese Publishing type：Research paper (scientific journal)

高速列車が橋梁を通過する際に生じる問題の１つに衝撃荷重がある。今後さらに列車を高速にする計画があるが、従来のモード法をベースにした解析法によれば、高速域で、衝撃率が極めて高くなることもある。本研究では従来あまり試みたことのない移動荷重による橋梁の動的応答を弾性波動から検討する目的で、境界要素法を用いた解析を試みたものである。

Influence of Welding Materials on Fatigue Strength of Fillet Welded Joints Made from High Strength Steel Reviewed

Kazuo Tateishi, Kyung.K.S,Fumitaka Machida,Chitoshi Miki

J. of Structural Mechanics and Earthquake Engineering, JSCE Vol. I-36 ( 543 ) page： 133-140 1996.7

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

In order develop a method to improve fatigue strength of fillet welded joints made from high strength steel, specimens with special considerations in electrode materials or post welding treatments were made and tested. Fatigue test results showed that weld toe re-melting method or TIG dressing could obviously improved fatigue strength, while applying under matching welds or special electrode with high fluidity had little advantage. These results were discussed in relation to welded toe profile, residual stress and hardness.

断面変化部のある鋼管柱の繰り返し水平載荷実験

舘石和雄、本間宏二、三木千寿、穴見健吾、佐々木哲也

阪神・淡路大震災に関する学術講演会論文集 page： 355-358 1996

Local Stress and Fatigue Strength of the Joint between Longitudinal and Transverse Ribs in Orthotropic Steel Deck Plate Reviewed

Chitosi Miki,Kazuo Tateishi, Atsushi Okugawa, Yuji Fujii

J. of Structural Mechanics and Earthquake Engineering, JSCE Vol. I-32 ( 519 ) page： 127-137 1995.7

Language：Japanese Publishing type：Research paper (scientific journal)

Local stress properties and fatigue strength of the joint between longitudinal and transverse ribs in orthotropic steel deck plate were investigated experimentally. In order to induce the out-of plane deformation to the web of transverse rib, loading system which can simulate the passing load was built using three loading jacks. The results of stress measurements and fatigue tests showed that the crossing detail without scallops on the deck plate side had lower local stress and fatigue life than that with scallops.

A Study on the Improvement of Resolution of Ultrasonic Inspection by Aperture Synthesis System Reviewed

Jiro Iwatate,Masato Tanaka,Kazuo Tateishi,Chitoshi Miki

J. of Structural Mechanics and Earthquake Engineering, JSCE Vol. I-30 ( 507 ) page： 121-127 1995.1

Mechanism for Developing Local Stress at the Connection Details in Steel Bridge Structures Reviewed

Kazuo Tateishi,Hiroyuki Takenouchi,Chitoshi Miki

J. of Structural Mechanics and Earthquake Engineering, JSCE Vol. I-30 ( 507 ) page： 109-119 1995.1

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

A method to find the relationship between local stresses caused fatigue damage at the connection details in steel bridge structures and displacements of bridge members were proposed. By applying this method to three typical damaged crossing details, the arising mechanism of local stresses were investigated.

　 PREV - NEXT 　

<TATEISHI Kazuo>

Papers - TATEISHI Kazuo