11-20-2011, 05:57 PM
Nonlinear inelastic dynamic analysis of suspensionnext termprevious termbridge
Author: Seung-Eock Kim Corresponding Author Contact Information, a, E-mail The Corresponding Author, Huu-Tai Thai | Size: unknown MB | Format: PDF | Publisher: Department of Civil and Environmental Engineering, Sejong University, 98 Kunja Dong Kwangjin Ku, Seoul 143-747, Republic of Korea | Year: Received 30 September 2009; revised 20 August 2010; Accepted 20 August 2010. Available online 20 September 2010.
Abstract
In this paper, an accurate and efficient numerical procedure is proposed for the nonlinear inelastic time-history analysis of previous termsuspensionnext termprevious termbridgesnext term subjected to earthquake excitations. The proposed procedure includes both geometric and material nonlinearities. The geometric nonlinearities of tower and girder members are taken into account by the use of stability functions, while the geometric nonlinearities of cable members are considered using exact analytical expressions of an elastic catenary. The gradual yielding along the member length and over the cross-section is included using a tangent modulus concept and a refined plastic hinge model. A computer program utilizing Newmark’s average acceleration algorithm with Newton–Raphson iteration is developed. The obtained results are compared with those generated using the commercial package SAP2000 to illustrate the accuracy and computational efficiency of the proposed procedure.
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Engineering Structures
Volume 32, Issue 12, December 2010, Pages 3845-3856