Faculty Profiles - TATEISHI Kazuo

Papers - TATEISHI Kazuo

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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 Reviewed

舘石和雄，埴渕脩司

土木学会論文集A1 Vol. 67 ( 2 ) page： 294-306 2011.7

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 page： XIII-2335-10 2010.6

A Proposal on Low Cycle Fatigue Strength Curve for Base Joints of Steel Bridge Pier Reviewed

Takeshi Hanji , Kazuo Tateishi

Steel Construction Engineering, JSSC Vol. 16 ( 64 ) page： 21-30 2009.12

Slip Resistance of friction-type Connections fastened with High-strength Bolts used to exposed Weathering Steel Reviewed

Junij Sasajima,Yoshihiro Nitta,Kinya Miyagawa, Kazuo Tateishi,Takao Harada

Jounal of Constructional Steel Vol. 17 page： 399-404 2009.11

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

This paper reports a detailed investigation on slip resistance of friction-type connections fasten with high-strength bolts used to exposed weathering steel. In case of normal steel, it is already reported about the influence that rusted friction surfaces gives to a slip coefficient. However, in the case of weathering steel, there are many reports about progress speed of rust and thickness decrease by corrosion, but there are few reports to about the influence of a state of friction surface.

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

Kazuo Tateishi, Takeshi Hanji, Shuji Hanibuchi

Welding in the World, IIW Vol. 53 page： 238-245 2009.10

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 page： 3377-3381 2009.9

Local Stress Behavior around Welded Joint of Angle Shape Shear Connector used in Steel-Concrete Composite Slab Reviewed

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

Steel Construction Engineering, JSSC Vol. 16 ( 63 ) page： 57-66 2009.9

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

Local stress behavior around welded joint between angle-shape shear connector and bottom plate in steel-concrete composite slab was investigated by 3D FEA. From the analytical result, local bending deformation was observed when the bond between concrete and steel plate was lost. Also, it was confirmed that local stress around welded joint due to local bending deformation was strongly correlated with shear stress of shear connector. After these analytical investigations, correlation equation between stress concentration factor of welded joint and shear stress of angle shape shear connector was established in order to carry out fatigue design. Moreover, in this paper calculating methods of bending moment and shear stress for steel-concrete composite slab using angle shape shear connector were recommended.

Improvement of Fatigue Strength in Steel Bridges Invited

Kazuo Tateishi

Steel Construction Today & Tomorrow, JSSC ( 27 ) page： 6-9 2009.7

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 page： 201-205 2009.3

Language：English

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.

A Simulation of Fatigue Crack Propagation in Steel Girder Bridges Reviewed

Kazuo Tateishi, Akira Tanikaga, Takeshi Hanji

Journal of Constractional Steel Vol. 16 page： 453-458 2008.11

Extremely low cycle fatigue assessment method for un-stiffend steel pier with box section Reviewed

Kazuo Tateishi,T Chen,Takeshi Hanji

Proc. of the 11th East Asia-Pacific Conference on Stuctural Engineerring & Construction(EASEC-11) page： 184-185 2008.11

Language：English

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 Reviewed

Shuji Hanibuchi,Kazuo Tateishi,Takeshi Hanji

Proc. of the 11th East Asia-Pacific Conference on Stuctural Engineerring & Construction(EASEC-11) page： 538-539 2008.11

Language：English

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 Reviewed

Keisuke Tsuchiya,Kazuo Tateishi,Takeshi Hanji

Proc. of the 11th East Asia-Pacific Conference on Stuctural Engineerring & Construction(EASEC-11) page： 530-531 2008.11

Language：English

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 Reviewed

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

International Journal of Steel Structures Vol. 8 ( 3 ) page： 199-204 2008.9

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

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 Reviewed

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

International Journal of Steel Structures Vol. Vol 8 ( 3 ) page： 215-223 2008.9

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

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 page： XIII-2232-08 2008.7

Extremely low cycle fatigue assessment method for un-stiffened cantilever steel columns Reviewed

Kazuo Tateishi, Tao Chen, Takeshi Hanji

J. of Structural Mechanics and Earthquake Engineering, JSCE Vol. 64 ( 2 ) page： 288-296 2008.4

Review of recent bridge asset management systems

Takeshi Hanji, Kazuo Tateishi

Proceedings of International Symposium on EcoTopia Science 2007 page： 1322-1326 2007.11

Analytical Investigation on Fatigue Crack Propagation in Welded Joints Reviewed

Kazuo Tateishi,Takeshi Hanji

Journal of Constractional Steel Vol. 15 page： 321-326 2007.11

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

Recently, a lot of fatigue cracks have occurred at some members in steel bridges. Besides, steel bridge have a possibility that the cracks would be initiated in future resulting the increase of their ages. In order to repair and retrofit the cracks properly, it is important to predict how they will propagate and to specify why they were initiated. In this paper, fatigue crack propagation analysis of welded joint was carried out with ZENCRACK software, and some factors which can be influence on the crack propagation process were investigated.

Fatigue Strength of Steel-Concrete Composite Slab using Angle Shape Shear Connector Reviewed

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

Steel Construction Engineering, JSSC Vol. 14 ( 55 ) page： 123-132 2007.9

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

Fatigue strength of welded joint between angle-shape shear connector and bottom plate in steel-concrete composite slab was investigated by fatigue testes. 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. This local bending deformation was observed when the bond between concrete and steel palate was lost, and analytically simulated by FEA carried out on slab members in practice. After these investigations, it was confirmed the stress level at the welded joint was small and much less than the fatigue limit even when the design truck loads were applied.

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