**5. Conclusions**

The objective of this study was to clarify the inelastic response behavior of partially prestressed concrete girders of viaduct structures during severe earthquake excitations. A study that includes experimental and analytical phases was carried out. Small-scaled models were employed so as to represent actual viaduct structures. Specimens representing the PC girders of the viaducts were tested experimentally. Two testing techniques were employed in the experimental phase of the study. The first technique was a statically reversed cyclic loading test. The objective of the statically reversed cyclic loading test was to study the inelastic response behavior of the PC girders and to obtain the hysteretic-load deformational characteristics. The sub-structured pseudo-dynamic testing technique was implemented as the second testing technique. During the sub-structured pseudo-dynamic test, the PC girder was tested experimentally, and the RC columns of the viaduct structure were simulated analytically. Response analyses for the same viaduct model in terms of hysteretic moment-rotation curves and time histories were carried out. From the test results, it can be concluded that:


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**Author details**

Wael Zatar

provided the original work is properly cited.

*Seismic Hazard of Viaduct Transportation Infrastructure*

prestressed concrete viaduct structures.

in further parametric studies that aim to fully clarify the response behavior of

3.A parametric study that is based on the calibrated hysteretic analytical restoring force model is conducted and shall result in having design guidelines for the partially prestressed concrete girders under earthquake excitations.

The author would also like to acknowledge the members of the structural laboratory at Saitama University who provided assistance during the experimental phase of the study. The author would like to acknowledge Dr. Hiroshi Mutsuyoshi, a structural engineering professor at Saitama University, for his valued assistance,

*DOI: http://dx.doi.org/10.5772/intechopen.85700*

full support, and appreciated comments.

**Acknowledgements**

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium,

Marshall University, Huntington, West Virginia, United States

\*Address all correspondence to: zatar@marshall.edu

in further parametric studies that aim to fully clarify the response behavior of prestressed concrete viaduct structures.

3.A parametric study that is based on the calibrated hysteretic analytical restoring force model is conducted and shall result in having design guidelines for the partially prestressed concrete girders under earthquake excitations.
