研究者詳細 - 舘石　和雄

論文 - 舘石　和雄

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止端処理を施した溶接継手の極低サイクル疲労強度とその簡易推定法査読有り

舘石和雄，埴渕脩司

土木学会論文集A1 67 巻 ( 2 ) 頁： 294-306 2011年7月

Effect of plate thickness on extremely low cycle fatigue strength of welded joints

Kazuo Tateishi, Shuji Hanibuchi

Proc. of the 63th annual meeting, International Institute of Welding 頁： XIII-2335-10 2010年6月

鋼製橋脚基部を対象とした低サイクル疲労強度曲線の提案査読有り

判治剛，舘石和雄

鋼構造論文集 16 巻 ( 64 ) 頁： 21-30 2009年12月

暴露した耐候性鋼材を用いた高力ボルト摩擦接合継手のすべり耐力査読有り

笹嶋純司、新田善弘、宮川欽也、舘石和雄、原田隆郎

鋼構造年次論文報告集 17 巻頁： 399-404 2009年11月

Improvement of extremely low cycle fatigue strength of welded joints by toe finishing 査読有り

Kazuo Tateishi, Takeshi Hanji, Shuji Hanibuchi

Welding in the World, IIW 53 巻頁： 238-245 2009年10月

A simulation on fatigue crack propagation in welded joints

Takeshi Hanji, Kazuo Tateishi, Keisuke Tsuchiya

Proceedings of the 10th International Conference on Structural Safety and Reliability 頁： 3377-3381 2009年9月

鋼・コンクリート合成床版のL形鋼ジベル溶接部の局部応力挙動に関する研究査読有り

舘石和雄、崔誠珉、内田大介、浅野浩一、小林潔

鋼構造論文集 16 巻 ( 63 ) 頁： 57-66 2009年9月

Improvement of Fatigue Strength in Steel Bridges 招待有り

Kazuo Tateishi

Steel Construction Today & Tomorrow, JSSC ( 27 ) 頁： 6-9 2009年7月

A Case Study of Performance Based Design on Low Cycle Fatigue Improvement

Kazuo Tateishi, Takeshi Hanji and Shuji Hanibuchi

Proc. of the 5th International Symposium on Steel Structures 頁： 201-205 2009年3月

記述言語：英語

In this study, we analyzed the local strain around the cracking point of the finished joint and the as-welded joint by FEA, and demonstrated that the local strain could be affected by the toe geometry parameters, such as radius, depth of the groove, and the main plate thickness. Then, we presented an example way to determine the desirable shape of the finished zone for satisfying the fatigue performance requirement of the welded joint.

*鋼プレートガーダー橋の疲労き裂進展シミュレーション査読有り

舘石和雄，谷利晃，判治剛

鋼構造年次論文報告集 16 巻頁： 453-458 2008年11月

担当区分：筆頭著者記述言語：日本語掲載種別：研究論文（学術雑誌）

き裂進展解析ソフトZENCRACKにより，プレートガーダー橋に生じた疲労き裂の進展シミュレーションを実施した．対象とした疲労き裂は横桁が主桁を貫通する箇所の溶接部より生じたき裂である．シミュレーションにより，き裂の進展速度やき裂が発生したことによる応力の再分配挙動などを明らかにした．

Extremely low cycle fatigue assessment method for un-stiffend steel pier with box section 査読有り

Kazuo Tateishi,T Chen,Takeshi Hanji

Proc. of the 11th East Asia-Pacific Conference on Stuctural Engineerring & Construction(EASEC-11) 頁： 184-185 2008年11月

記述言語：英語

In the Great Hanshin Awaji Earthquake(1995),steel bridge piers were damaged by extremely low cycle fatigue, which has raised concerns about the seismic performance of the piers. However, researches on extremely low cycle fatigue strength of structural steel members have been limited and no design guidelines have been established for bridge structures. The authors have already conducted a series of researches on extremely low cycle fatigue strength of structural steel members and proposed a simple assessment method for extremely low cycle fatigue strength of the steel bridge piers. In this study, steel pier specimens were fabricated and tested under large cyclic deformation, and the proposed assessment method was verified by the test results.

Improvement of extremely low cycle fatigue strength of welded joints 査読有り

Shuji Hanibuchi,Kazuo Tateishi,Takeshi Hanji

Proc. of the 11th East Asia-Pacific Conference on Stuctural Engineerring & Construction(EASEC-11) 頁： 538-539 2008年11月

記述言語：英語

In this study, the improvement of extremely low cycle fatigue strength by toe finishing was investigated. T-shape welded joints, which are in as-welded, TIG dressed or burr ground condition, were tested under displacement control conditions. The test results indicated that crack initiation lives of finished specimens were much longer than those of as-welded specimens. Between TIG dressing and burr grinding no clear difference on improvement was observed. We also performed elasto-plastic finite element analyses to calculate local strain around the cracking point, and assessed the fatigue strength of the finished specimen based on the local strain. The results demonstrated that the fatigue strength of TIG dressed and burr ground joints can be reasonably assessed using the local strain at the cracking point and the extremely low cycle fatigue strength curves.

A study on fatigue crack propagation path in T-Shape welded joints 査読有り

Keisuke Tsuchiya,Kazuo Tateishi,Takeshi Hanji

Proc. of the 11th East Asia-Pacific Conference on Stuctural Engineerring & Construction(EASEC-11) 頁： 530-531 2008年11月

記述言語：英語

In this study, fatigue crack propagation analyses on T-shape welded joints subjected to plate bending were carried out. We picked up five kinds of stresses as parameters ,i.e. nominal bending stress, membrane stress and average shear stress in the main plate, nominal bending stress and membrane in the attached rib. We analyzed the crack propagation path with changing these parameters. Analysis results results indicated that the crack angle at the beginning was influenced by these parameters, especially the average shear stress in the main plate. These results were supported by fatigue test results conducted on T-shape welded joints with the same conditions used in the analysis .Finally, we presented the relationship of the average shear stress and the crack angle at the beginning.

Fatigue Strength of Angle Shape Shear Connector used in Steel-Concrete Composite Slab 査読有り

Kazuo Tateishi,Sung-Min Choi,Daisuke Uchida, Kouichi Asano,Kiyoshi Kobayashi

International Journal of Steel Structures 8 巻 ( 3 ) 頁： 199-204 2008年9月

記述言語：英語掲載種別：研究論文（学術雑誌）

Fatigue strength of welded joint between angle shape shear connector and bottom plate in stress-concrete composite slab was investigated by fatigue tests. Fatigue tests were performed on push-out shear specimen and beam specimen. Local stress around the welded joint was also investigated by FEA. In fatigue tests, fatigue cracks initiated and propagated at the welded toe. The fatigue cracks were caused by stress concentration at the welded joints due to the local bending deformation of bottom plate. The fatigue strength of the welded joints can be reasonably assessed by using the hot spot stress and the design curve of FAT100 recommended in IIW.

Fatigue Strength Improvement of U-type Trough Rib at Field Welded Joint in steel Bridge Deck 査読有り

Sung-Min Choi,In-Tae Kim,Won-Chan Seo,Dong-Uk Lee, Kazuo Tateishi

International Journal of Steel Structures Vol 8 巻 ( 3 ) 頁： 215-223 2008年9月

記述言語：英語掲載種別：研究論文（学術雑誌）

The influence of misalignment is investigated to improve the fatigue strength of U-type trough ribs at field welded joints in steel bridge decks. A 3-point bending fatigue test and examined with a fatigue test and FEA to estimate the influence of misalignment. The result of the static loading test for the full-scale specimens showed that the position of maximum stress is in the bottom corners of the U-rib. It is known that fatigue cracks initiate from the inner surface of the U-rib and propagated to the outer surface, and larger misalignments contributed to a shorter fatigue life for the U-rib, based on the result of the fatigue test. The fatigue life is drastically reduced when the magnitude of misalignment is increased, as shown in the results of the fatigue test on small-scale specimens with a backing strip, and fatigue cracks usually occurred at the root of base metal. The result of stress analysis on small-scale specimens showed that the stress concentration at the root of base metal increases in proportion to larger misalignment, and the semicircular shape of the root is less subject to stress concentration than the right angle root type.

Improvement of extremely low cycle fatigue strength of welded joints by toe finishing

Kazuo Tateishi, Shuji Hanibuchi, Takeshi Hanji

The 61st Annual Assembly of International Institute of Welding 頁： XIII-2232-08 2008年7月

Extremely low cycle fatigue assessment method for un-stiffened cantilever steel columns 査読有り

Kazuo Tateishi, Tao Chen, Takeshi Hanji

J. of Structural Mechanics and Earthquake Engineering, JSCE 64 巻 ( 2 ) 頁： 288-296 2008年4月

Review of recent bridge asset management systems

Takeshi Hanji, Kazuo Tateishi

Proceedings of International Symposium on EcoTopia Science 2007 頁： 1322-1326 2007年11月

溶接継手に生じた疲労き裂の進展経路に関する解析的検討査読有り

舘石和雄、判治　剛

鋼構造年次論文報告集 15 巻頁： 321-326 2007年11月

L形鋼をずれ止めに用いた鋼・コンクリート合成床版の疲労耐久性査読有り

舘石和雄、崔　誠珉、内田大介、浅野浩一、小林潔

鋼構造論文集 14 巻 ( 55 ) 頁： 123-132 2007年9月

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