RESEARCH ON THE INFLUENCE OF MILD STEEL DAMPERS ON SEISMIC PERFORMANCE OF SELF-RESETTING PIER

Authors

  • Mengqiang Guo University of Hebei Engineering, Faculty of Civil Engineering, Handan, Hebei, China
  • Yanli Shen University of Hebei Engineering, Faculty of Civil Engineering, Handan, Hebei, China

DOI:

https://doi.org/10.14311/CEJ.2021.01.0008

Keywords:

Self-resetting pier, Mild steel damper, Axial compression ratio, Seismic performance

Abstract

In order to improve the energy consumption capacity of the assembled self-resetting pier, the mild steel damper is added to the prefabricated self-resetting pier to form a prefabricated self- resetting pier with an external mild steel damper. Two sets of pier models were established by numerical simulation. On the basis of verifying the correctness of the traditional prefabricated self- resetting pier model, the two sets of pier models were subjected to low-cycle reciprocating loading to study the influence of the mild steel damper yield strength parameters and the pier axial compression ratio parameters on the seismic performance of the pier structure. The results show that compared with traditional prefabricated self-resetting piers, the hysteresis curve of self-resetting piers with mild steel dampers is fuller, and energy consumption and bearing capacity are greatly improved. With the increase of the yield strength of the mild steel damper, the energy consumption capacity will decrease when the loading displacement is less than 25mm, but the overall energy consumption capacity will increase. As the axial compression ratio of the pier column increases, the bearing capacity and energy consumption capacity of the structure increase significantly, but the impact is not obvious when the axial compression ratio exceeds 0.052.

References

MANDER J B, CHENG C T. Seismic resistance of bridge piers based on damage avoidance design[R]. Technical Report NCEER-97-0014. Buffalo: State University of New York at Buffalo, 1997.

SOLBERG K, MASHIKO N, MANDER J B, DHAKAL R P. Performance of a damage-protected highway bridge pier subjected to bidirectional earthquake attack [J]. Journal of Structural Engineering, ASCE, 2009, 135(5): 469-478.

MARRIOTT D, PAMPANIN S, PALERMO A. Quasi-static and pseudo-dynamic testing of unbonded post-tensioned rocking bridge piers with external replaceable dissipaters [J]. Earthquake Engineering and Structural Dynamics, 2009, 38(3): 331-354.

MARRIOTT D, PAMPANIN S, PALERMO A. Biaxial testing of unbonded post-tensioned rocking bridge piers with external replacable dissipaters [J]. Earthquake Engineering and Structural Dynamics, 2011, 40(15): 1723-1741.

TRONO W, JEN G, PANAGIOTOU M, SCHOETTLER M, OSTERTAG C P. Seismic response of a damage-resistant recentering posttensioned-HYFRC bridge column [J]. Journal of Bridge Engineering, ASCE, 2015, 20(7): 1-13.

HE M H, XIN K G, GUO J et al. Study on intrinsic lateral stiffness and hysteresis mechanism of self-reposition bridge piers [J]. China railway science, 2012, 33(05): 22-28. (in Chinese)

GUO J, XIN K G, HE M H et al. Experimental research and analysis on seismic performance of self-restoring bridge piers [J]. Engineering mechanics, 2012, 29(S1): 29-34+45. (in Chinese)

HAITHAM D, MOHAMED E, JOSHUA H. Behavior of segmental precast posttensioned bridge piers under lateral loads [J]. Journal of Bridge Engineering, 2012, 17(5): 735-746.

BU Z Y, OU Y C, SONG J W, et al. Cyclic Loading Test of Unbonded and Bonded Posttensioned Precast Segmental Bridge Columns with Circular Section [J]. Journal of Bridge Engineering, 2015, 21(2): 10-18.

WANG J W, ZHANG W G, AI Q H. Comparison of seismic performance tests of PC and RC Hollow Piers [J]. Journal of China highway, 2015, 28(04): 76-85. (in Chinese)

GAO J, GE J P, LIN T L. Quasi static test research on dry joint segmental assembled piers [J]. Vibration and impact, 2011, 30(04): 211-216. (in Chinese)

GUO T, CAO Z, XU Z, et al. Cyclic Load Tests on Self-centering Concrete Pier with External Dissipators and Enhanced Durability[J]. Journal of Structural En-gineering, 2015, 142(1): 10-19.

WANG M, QIAN F X, YANG W G, YANG L. Comparison study on constitutive relationship of low yield point steels, Q345B steel and Q460D steel [J]. Eengineering mechanics, 2017, 34(02): 60-68. (in Chinese)

CHEN Z Y, MAI C L, XU Z X, et al. Experimental research on seismic performance of shear plate damper made by low yield point steel [J]. J Xiamen Univ Nat Sci, 2019, 58(06): 916-921. (in Chinese)

SONG F M, WEN D H, LI Z G. Development of 225MPa low yield point steel used for earthquake resistant [J]. Thermal processing technology, 2009, 38(12):62-63+69. (in Chinese)

JAPAN ROAD ASSOCIATION (JRA). Design specifications of highway bridges: seismic design (JRA-2012)[S]. Tokyo: Japan Road Association, 2012.

Downloads

Published

2021-04-09

How to Cite

Guo, M., & Shen, Y. (2021). RESEARCH ON THE INFLUENCE OF MILD STEEL DAMPERS ON SEISMIC PERFORMANCE OF SELF-RESETTING PIER. Stavební Obzor - Civil Engineering Journal, 30(1). https://doi.org/10.14311/CEJ.2021.01.0008

Issue

Section

Articles