SEISMIC RESPONSE OF SUSPENSION BRIDGES UNDER MULTI - COMPONENT NON - STATIONARY RANDOM GROUND MOTION

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ALLAM S.; DATTA T.K.

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Paper Information

Journal: Journal of Seismology and Earthquake Engineering Year:2003 | Volume:5 | Issue:1 Page(s): 15-29

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Title

SEISMIC RESPONSE OF SUSPENSION BRIDGES UNDER MULTI - COMPONENT NON - STATIONARY RANDOM GROUND MOTION

Author(s)

ALLAM S. | DATTA T.K. | Issue Writer Certificate

Keywords

MARKOV METHOD OF ANALYSISQ4

SEISMIC RESPONSE OF SUSPENSION BRIDGEQ4

NONSTATIONARY SEISMIC EXCITATIONQ4

MODULATING FUNCTIONQ4

QUASI - STATIC BRIDGE RESPONSEQ4

Abstract

A MARKOV METHOD OF ANALYSIS is presented for obtaining the SEISMIC RESPONSE OF SUSPENSION BRIDGEs to nonstationary random ground motion. A uniformly modulated nonstationary model of the random ground motion is assumed which is specified by the evolutionary r.m.s ground acceleration. Both vertical and horizontal components of the ground motion are considered to act simultaneously at the bridge supports. The analysis duly takes into account the angle of incidence of earthquake, the spatial correlation of ground motion and the quasi - static excitation. A suspension bridge is analysed under a set of parametric variations in order to study the nonstationary response of the bridge. The results of the numerical study indicate that (i) frequency domain spectral analysis with peak r.m.s acceleration as input could provide more r.m.s response than the peak r.m.s response obtained by the nonstationary analysis; (ii) longitudinal component of the ground motion significantly influences the vertical vibration of the bridge; and (iii) the angle of incidence of earthquake has considerable influence on the deck response.

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APA: Copy

ALLAM, S., & DATTA, T.K.. (2003). SEISMIC RESPONSE OF SUSPENSION BRIDGES UNDER MULTI - COMPONENT NON - STATIONARY RANDOM GROUND MOTION. JOURNAL OF SEISMOLOGY AND EARTHQUAKE ENGINEERING, 5(1), 15-29. SID. https://sid.ir/paper/112323/en

Vancouver: Copy

ALLAM S., DATTA T.K.. SEISMIC RESPONSE OF SUSPENSION BRIDGES UNDER MULTI - COMPONENT NON - STATIONARY RANDOM GROUND MOTION. JOURNAL OF SEISMOLOGY AND EARTHQUAKE ENGINEERING[Internet]. 2003;5(1):15-29. Available from: https://sid.ir/paper/112323/en

IEEE: Copy

S. ALLAM, and T.K. DATTA, “SEISMIC RESPONSE OF SUSPENSION BRIDGES UNDER MULTI - COMPONENT NON - STATIONARY RANDOM GROUND MOTION,” JOURNAL OF SEISMOLOGY AND EARTHQUAKE ENGINEERING, vol. 5, no. 1, pp. 15–29, 2003, [Online]. Available: https://sid.ir/paper/112323/en

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