PROBABILISTIC SEISMIC VULNERABILITY OF CAISSON QUAY WALLS: CASE STUDY OF KOBE PORT

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JAFARIAN Y.; MIRAIE S.M.

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Journal: Sharif Journal of Civil Engineering Year:2016 | Volume:31-2 | Issue:4.2 Page(s): 3-12

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Title

PROBABILISTIC SEISMIC VULNERABILITY OF CAISSON QUAY WALLS: CASE STUDY OF KOBE PORT

Author(s)

JAFARIAN Y. | MIRAIE S.M. | Issue Writer Certificate

Keywords

FRAGILITY CURVESQ1

PERFORMANCE-BASED DESIGNQ2

CAISSON QUAY WALLQ2

Abstract

Ports and marine facilities play important roles in global transportation and commercial activities. Earthquakes can create significant damage to ports and other marine facilities because such systems commonly rely on geological units containing problematic soils. Several sections of the quay walls constructed in Kobe Port were reportedly damaged during the catastrophic Kobe 1995 earthquake. This paper deals with the seismic vulnerability of a damaged section of this port via the results of fully nonlinear numerical analyses and subsequent probabilistic analysis. Numerical analyses were carried out using the finite difference method, contributing a constitutive model capable of simulation of liquefaction occurrence. Results of the preliminary numerical analyses were compared with those observed in the field, as well as the findings of previous researchers in terms of lateral and vertical permanent displacements. This preliminary benchmark analysis provided satisfactory results in order to confirm the numerical modeling for the subsequent runs. Several subsequent analyses were then performed using many input motions recorded during different earthquakes. To investigate the seismic vulnerability of the wall subjected to several input motions, probabilistic analyses were carried out on the pool of the numerical results for evaluation of system FRAGILITY CURVES. FRAGILITY CURVES for different levels of damage; “serviceable", “repairable", and “near collapse", were drawn, based on various intensity parameters including PGA, PGV, and Ia. It is shown that different damage probability can be obtained from various seismic parameters in every earthquake. A fragility curve based on a single intensity measure cannot appropriately represent the probability of failure in such structural-geotechnical systems. According to the results of this study, the probability of exceedence from the upper performance level, i.e. \near collapse", when PGA, PGV, and Ia are chosen as intensity measures, are 46%, 51%, and 40% percent, respectively.

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APA: Copy

JAFARIAN, Y., & MIRAIE, S.M.. (2016). PROBABILISTIC SEISMIC VULNERABILITY OF CAISSON QUAY WALLS: CASE STUDY OF KOBE PORT. SHARIF: CIVIL ENINEERING, 31-2(4.2), 3-12. SID. https://sid.ir/paper/127943/en

Vancouver: Copy

JAFARIAN Y., MIRAIE S.M.. PROBABILISTIC SEISMIC VULNERABILITY OF CAISSON QUAY WALLS: CASE STUDY OF KOBE PORT. SHARIF: CIVIL ENINEERING[Internet]. 2016;31-2(4.2):3-12. Available from: https://sid.ir/paper/127943/en

IEEE: Copy

Y. JAFARIAN, and S.M. MIRAIE, “PROBABILISTIC SEISMIC VULNERABILITY OF CAISSON QUAY WALLS: CASE STUDY OF KOBE PORT,” SHARIF: CIVIL ENINEERING, vol. 31-2, no. 4.2, pp. 3–12, 2016, [Online]. Available: https://sid.ir/paper/127943/en

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