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” Examples
> Example of Business Practice
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Example of Business Practice

1 Investigation on Seismic Capacity Evaluation of SRC Piers 1)

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As a part of seismic capacity evaluation & retrofit investigation of a existing large bridge, the shear capacity of the hollow concrete encased steel bridge pier is numerically examined. Moreover, in order to check the accuracy of the simulation technique, the verification analysis of a past loading experiment for SRC column specimens arranged H steel is also carried out in advance.

2 Numerical Study on RC Beams Confined in Steel Tubes 2)

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Numerical simulation for the loading experiment of RC members Confined by Steel Tube (Steel Concrete Composite Structure) is carried out, and rational arrangement of steel tube is examined through parameteric analysis. The simulation appoximately evaluated the experiment behavior, and the phenomenon that cracks initiate from not the lower edge, but location main reinforcing bars are arranged is also reproduced.

3 Numerical Investigation of Shear Characteristic at Member Joint with High Strength Mortar Cotter 3)

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As a part of joint connection rationalization of precast units, shear behavior at connection part is analytically examined for real scale loading test. While it is difficult for shear capacity at the joint part of this specimen to evaluate by the existing design formula, it is recognized that the finite element analysis can estimate the capacity with comparatively sufficient accuracy.

4 3D FEM Analysis of RC Columns Subjected to Axial Force, Flexure and Torque 4)

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3D nonlinear FEM analysis was conducted for experimental behavior of RC columns subjected to axial force, flexure and torque. Analytical accuracy was examined and parameter analysis on shear reinforcement was also carried out.

5 3D FEM Coupled Seismic Response Analysis of Pile Foundation 5)-7)

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Full 3D FE seismic response analysis based on material nonlinear mechanical models was carried out for reinforced concrete pile foundation-soil coupled system. The detailed response and damage of pile foundation were investigated by comparing with the results by 3D static pushover analysis and 2D FE seismic response analysis, too.




References

1)

Namikawa, K., Sakihama, H., Mizoguchi, T., Tsuchiya, S., Daihara, N. and Yabe, M. : Method for Evaluation of Yield Strength and Failure Mode of Hollow Concrete Encased Steel Bridge Columns, Journal of Structural Engineering, Vol.50A, pp.1051-1058, JSCE, April 2004. (in Japanese)

2)

Yamaguchi, Y., Hirano, K., Sasaya, T., Takasaki, H., Konishi, S. and Tsuchiya, S. : A Numerical Study on RC Beams Confined in Steel Tubes, Journal of Structural Engineering, Vol.50A, pp.1245-1250, JSCE, April 2004. (in Japanese)

3)

Hirano, K., Matsuoka, S., Maruyama, K. and Tsuchiya, S. : Shear Characteristic at Member Joint with High Strength Mortar Cotter, Proc. of JCI, Vol.25, No.2, pp.781-786, JCI, July 2003. (in Japanese)

4) Tsuchiya, S., Maekawa, K. and Kawashima, K. : Three-Dimensional Cyclic Behavior Simulation of RC Columns under Combined Flexural Moment and Torsion Coupled with Axial and Shear ForcesCJournal of Advanced Concrete Technology, Vol.5, No.3, pp.-CJCI, November 2007. (submitting)
5) Maki, T., Tsuchiya, S., Watanabe, T. and Maekawa, K. : Coupled Seismic Response Analysis of Pile Foundation using 3D Finite Element Method, Proc. of JCI, Vol.29, No., pp., JCI, July 2007. (in Japanese)
6) Maki, T., Tsuchiya, S., Watanabe, T. and Maekawa, K. : Seismic Repsonse Analysis of Pile Foundation using Finite Element Method, Proc. of the 2nd Japan-Greece Workshop on Seismic Design, Observation and Retrofit of Foundations, pp.409-416, Tokyo, Japan, April 2007.
7)