TANIGUCHI Yoshiya

写真a

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Title

Professor

Laboratory location

Sugimoto Campus

Degree 【 display / non-display

  • Osaka City University -  Doctor of Engineering

Research Areas 【 display / non-display

Building Structure and Materials

Research subject summary 【 display / non-display

  • The elasto - plastic behavior of static and dynamic responses are focused for spatial lattice structures, which are subjected to vertical or horizontal loads. The purpose is to make clear the relationship between seismic responses and static responses from the view point of input strain energy properties after and before yielding, and to estimate bearable seismic levels with the information of static elasto - plastic behaviors. The static response compared is the relationships between equivalent velocities of strain energies and displacements. The dynamic response compared is that between earthquake input acceleration PGA and equivalent velocities of strain energies.

Research Interests 【 display / non-display

Spatial lattice structure, Static load-carrying capacity, Seismic resistant capacity, Bearable PGA

Research Career 【 display / non-display

  • Relation between dynamic collapse behavior and static collapse behavior, under excessive vertical loads, is numerically investigated to present a prediction method for the load level of dynamic collapse for spatial lattice beams and double-layer lattice grids.

    (Individual) Project Year :

    2008.04
    -
    Today

    Keyword in research subject:  dynamic collapse, limit state deformation, limit state load

  • Study on seismic damper for timber structures

    (Collaboration in Japan) Project Year :

    2008.04
     
     

    Keyword in research subject:  frame structure, timber structure, damper

  • Response control and damping mechanism of spatial structures

    (Collaboration in Japan) Project Year :

    2002.04
     
     

    Keyword in research subject:  response control, damping mechanism, spatial structure

  • Research on the unfied approach to frame stability

    (Collaboration in Japan) Project Year :

    2001.04
    -
    2005.03

    Keyword in research subject:  steel frame, buckling

  • Seismic design for non-structural members of spatial structures

    (Collaboration in Japan) Project Year :

    2001.04
     
     

    Keyword in research subject:  spatial structure, non-structural member

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Association Memberships 【 display / non-display

  • International Association of Shell& Spatial Structures

  • Architectural Institute of Japan

  • Membrane Structures Association of Japan

  • Japanese Society of Steel Construction

Committee Memberships 【 display / non-display

  • 2002
    -
    2007.03

    Architectural Institute of Japan  

Current Career 【 display / non-display

  • Osaka City University   Graduate School of Engineering   Urban Engineering Course   Professor  

  • Osaka City University   Center for Research and Development of Higher Education  

Career 【 display / non-display

  • 2008
     
     

    Osaka City University  

  • 1999
     
     

    Osaka City University  

  • 1993
     
     

    Osaka City University  

  • 1985
    -
    1990

    Obayashi Corporation  

Graduate School 【 display / non-display

  •  
    -
    1993

    Osaka City University  Graduate School, Division of Engineering 

Graduating School 【 display / non-display

  •  
    -
    1983

    Osaka City University   Faculty of Engineering  

 

Published Papers 【 display / non-display

  • Load-carrying capacity of semi-rigid double-layer grid structures with initial crookedness of member

    Huijun LI, Yoshiya TANIGUCHI

    Engineering Structures  184   421 - 433 2019  [Refereed]

  • Prediction Method of Bearable PGA for Single Layer Lattice Domes under Vertical Loading

    Yoshiya TANIGUCHI, Tomoya MATSUI, Susumu YOSHINAKA

    Proceedings of the 12th Asian Pacific Conference on Shell & Spatial Structures, APCS2018    458 - 467 2018.10  [Refereed]

  • Effect of Member Eccentricity on Load-Carrying Capacity of Three-Way Single-Layer Cylindrical Reticulated Shell

    Hui-Jun LI, Yoshiya TANIGUCHI

    Proceedings of the 12th Asian Pacific Conference on Shell & Spatial Structures, APCS2018    215 - 225 2018.10  [Refereed]

  • 鉛直荷重下単層ラチスドームの静的および動的応答における弾塑性挙動の比較

    谷口 与史也, 松井 知也, 吉中 進

    日本建築学会 日本建築学会構造系論文集  83 ( 747 ) 709 - 716 2018  [Refereed]

     View Summary

    &nbsp;This paper focuses on the elasto - plastic behavior of static and dynamic responses for single layer lattice domes, which are subjected to vertical loads. The purpose is to make clear the relationship between seismic responses and static responses such as static absorbed energy properties after and before yielding, and to estimate bearable seismic levels with the information of static elasto - plastic behaviors. The two responses compared are shown in Fig. 14. The dimensions of both figures are equal in multiplying or dividing by circular frequency.<br>&nbsp;The single layer lattice domes are shown in Fig. 1. Half open angle of members and self-weight are adopted as numerical parameters as shown in Table 3. The static elasto - plastic behaviors are shown in Fig. 3. In the figure, The solid lines are the equivalent velocity of strain energies, the dotted and dashed lines are that of static absorbed energies and the dashed lines are that of potential energy performed by the product of self-weight and vertical displacements. These relationships obtained are simplified into bi-linear relationships as shown in Fig. 4 to obtain the static elasto - plastic property coefficient j. The obtained results of coefficient j are shown in Table 4.<br>&nbsp;Secondary, the dynamic elasto - plastic behaviors are estimated against 4 seismic waves of Fig. 5. The dynamic behavior obtained is the relationships between maximum ground acceleration PGA and strain energies. The obtained results are shown in Figs. 6-9 and simplified into bi-linear relationships to obtain the dynamic elasto - plastic property coefficient q, as shown in Fig. 14(b). The obtained results are shown in Table 5.<br>&nbsp;In comparing the two property coefficients j and q as shown in Fig. 10, BCJ wave is relatively large about the dynamic effect. On the contrary, El Centro wave is the smallest among the four waves. This reason is made clear in considering the input acceleration power history as shown in Fig. 11. BCJ wave of Fig. 11(a) has many peaks during the motions, but El Centro wave of Fig. 11(b) has a few peaks during the first half of motions. These strong characteristics of seismic waves can be considered with the input energy spectrum V<sub>E</sub> as shown in Fig. 12. Then the ratios q/j are compared with the ratios V<sub>E</sub>/S<sub>V</sub>. The ratio q/j decreases as the ratio V<sub>E</sub>/S<sub>V</sub> increases.<br>&nbsp;The Eqn. 5 is the regression formula obtained by the data distributed in the quadrangle of Fig. 13, expressed as dotted and dashed line in the figure. The PGA corresponding to the limit state deformations can be estimated with Eqns. 4 and 5. The predicted results are shown in Fig. 15 and Table 6.<br>&nbsp;The following conclusions are obtained in the present study: (1) The relationship of maximum earthquake input acceleration PGA and strain energies of domes shows bi-linear type such as the relationships of static absorbed energies and displacements. (2) In comparing the preceding two relationships as for dynamic and static responses, the change ratios among elastic and plastic ranges are dependent upon the seismic waves. The distribution tendencies are able to be explained with the information of input acceleration power history of seismic waves. (3) The ratios of dynamic property q against static property j becomes smaller, as the ratios of energy spectrum V<sub>E</sub> against velocity response spectrum S<sub>V</sub> becomes larger. (4) The present estimation method of PGA corresponding to limit state deformations shows a relatively good accuracy.

    DOI CiNii

  • 初期変位付与型TMDの同調比の設定

    吉中 進, 小鶴 桂太, 谷口 与史也

    日本建築学会 日本建築学会構造系論文集  82 ( 738 ) 1177 - 1187 2017  [Refereed]

     View Summary

    &nbsp;A TMD (Tuned Mass Damper) is a passive-type control device that consists of a small mass, a spring and a damper. And it absorbs the oscillation energy of structures as the kinetic energy of its mass and disperses it via its damper. The TMD shows high control performance for harmonic responses. On the other hand, the TMD has limited capacity to suppress transient responses. The reason is that there is some time delay before the TMD becomes fully effective because they are initially at rest.<br>&nbsp;Thus, to control the transient response more effectively, we propose TMDs with initial displacement, that is, dampers whose springs are stretched until the release moment.<br>&nbsp;In our previous study, we focused on the considerably high modal damping ratio of the second mode compared to the first mode based on the relationship between the TMD damping ratio and the modal damping ratio of a two-degree-of-freedom model. And we proposed the design formulas for the optimal tuning and damping ratios and the initial displacement to attain high control performance under impulse loading. The proposed design formulas are based on the principle that by giving the specific TMD initial displacement under the specific structural initial condition the structural response of the first mode with low modal damping is eliminated while the structural response of the second mode with high modal damping is only oscillated. But the physical meaning of the design formula for TMD initial displacement is not clear because it is an approximate solution based on the perturbation method.<br>&nbsp;Then, we formulated the equation for initial conditions to release TMD initial displacement from the theoretical free vibration solution and showed its physical meaning clearly. We studied about TMD initial displacement and structural conditions to release initial displacement using the complex plane, and we showed that the initial structural condition to oscillate only the second mode was limited to a neighborhood of <i>ẋ</i><sub>0</sub>&ne;0, <i>x</i><sub>0</sub>=0. On the other hand, we proved that, by dividing one TMD into plural TMDs that have different natural frequencies, any initial structural conditions to release TMDs became possible.<br>&nbsp;In this paper, firstly, we analytically study the effect of different settings of two TMDs tuning ratios on TMD initial displacements to eliminate the first modal response with the lowest modal damping and structural responses for free vibration using a basic three-degree-of-freedom model. Next, we decompose the initial condition to modal eigenvectors on the complex plane and study the interrelationship between each initial condition of a main mass and two TMDs. Then, we show the reason why different settings of TMDs tuning ratios affect the TMD initial displacements to eliminate the first modal response and the structural responses. Finally, by using the energy indicator &ldquo;TMD power flow&rdquo; that shows an additional TMD damping effect proposed by Soong, T.T. and Dargush, G.F., we study the control performance of TMDs with different tuning ratios condition.

    DOI CiNii

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Books etc 【 display / non-display

  • Dynamic Behavior and Seismic Design of Spatial Structures

    (Part: Joint Work )

    AIJ  2006

Review Papers (Misc) 【 display / non-display

  • A Study on Tsunami Evacuation Distance at the Undeground Mall around Osaka Station

    Goda Shoko, Yoshinaka Susumu

      1237 - 1238 2012.09

  • Classification of Falling Damage of the Ceiling Focusing on the Weight of the Ceiling after 1995 Hyogoken-Nanbu Earthquake

    Suzuki Hideaki, Yoshinaka Susumu

      851 - 852 2012.09

Conference Activities & Talks 【 display / non-display

  • FEM analysis on flexural behavior of RC beams replaced SEA as part of main reinforcement

    Umemoto Jyunya, Suzuki Yusuke, Taniguchi Yoshiya

    Summaries of Technical Papers of Annual Meeting  2018.09 

  • Experimental study on reinforcement effect of cedar wood by basalt fiber sheet

    Nishimizu Maoto, Suzuki Yusuke, Taniguchi Yoshiya

    Summaries of Technical Papers of Annual Meeting  2018.09 

  • FEM analysis on fracture behavior of RC exterior beam-column joint with joint yielding failure mechanism

    Takano Yasuyuki, Suzuki Yusuke, Taniguchi Yoshiya

    Summaries of Technical Papers of Annual Meeting  2018.09 

  • Effect of joint eccentricity of web members on load-carrying capacity for two-way parallel chord lattice grids

    Takada Ryohei, Takaoka Ryousuke, Taniguchi Yoshiya, Yoshinaka Susumu

    Summaries of Technical Papers of Annual Meeting  2018.09 

  • Comparison of stress properties of hanging type lattice shells with different diagonal member arrangement

    Muraguchi Takanori, Yoshinaka Susumu, Taniguchi Yoshiya

    Summaries of Technical Papers of Annual Meeting  2018.09 

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Other Research Activities (Works) 【 display / non-display

  • Seminar for damping mechanism and response control of spatial structures

    Fieldwork 

    2002
     
     
  • Seminar for Buckling Behavior of Steel Structures, AIJ

    Fieldwork 

    2001
    -
    2005
  • The 8th seminar for shell and spatial structure

    Fieldwork 

    1999
     
     
  • Analysis and design of cylindrical latticed roof

    Fieldwork 

    1995
     
     
  • Preliminary reconnaissance report of the 1995 Hyogoken-Nanbu Earthquake(AIJ)

    Fieldwork 

    1995
     
     
 

Other educational activity and Special note 【 display / non-display

  • Improvement of educational methods

    (2017)

  • Contribution to University-wide Cross-training program

    (2017)

 

Theme of Possible Research Exchange 【 display / non-display

  • Research of hystreretic damper for timber structures

    Research theme : A new type of hysteretic dampers is experimentally studied for timber structures.

    Request for collaborative research : The private sector, such as other institutions

    Type of research exchange : Technical consultation, Consignment study, Collaborative research

    Keyword : Seismic damper, Hystresis curve, Experiment

     View Details

    Application fields / methods etc : Energy dissipation of seismic damper might reduce the input energy of earthquake for timber structures, and to increase the seismic strength of space structures.

  • Research of jointing system for spatial structures

    Research theme : Research of jointing method for space structures that are made of either metal or timber.

    Request for collaborative research : The private sector, such as other institutions

    Type of research exchange : Technical consultation, Consignment study, Collaborative research

    Keyword : Space structure, Joint, Experiment

     View Details

    Application fields / methods etc : Structural engineering

 

Foreigner acceptance 【 display / non-display

  • Academic year : 2018

     View Details

    Number of foreigners accepted
    1

    中国

  • Academic year : 2017

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    Number of foreigners accepted
    1

    中国