Journal of Engineering Mechanics - Papers
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Journal of Engineering Mechanics - Papers
#1
Journal of Engineering Mechanics - Requested papers




Strength of Stiffened Flanges in Horizontally Curved Box Girders

Author: Choi Byung H.,Yoo Chai H. | Size: 0.3 MB | Format: PDF | Quality: Original preprint |
Publisher: Journal of Engineering Mechanics; Vol. 131, Issue 2 | Year: Feb2005 | pages: p167-176, 10p.


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Abstract:
Longitudinal stiffeners are often attached to increase the buckling strength of thin-walled box girder flanges. The minimum required rigidity for longitudinal stiffeners for curved box girder flanges is given by the AASHTO “Guide specifications for horizontally curved steel girder highway bridges.” However, this requirement is simply adopted from the current AASHTO specifications for straight stiffened flanges. The validity of this requirement has been questioned in a series of recent studies. The effect of important design parameters on the minimum required stiffener rigidity is investigated numerically in this study by examining the prebuckling stress distribution and elastic and inelastic buckling stresses of horizontally curved stiffened flanges. In order to characterize and quantify the analytically collected data, a series of parametric studies were performed. A new equation for the minimum required rigidity for the longitudinal stiffeners is derived from regression analyses. Through the evaluation of a few selected case studies and a design example, the validity and reliability of the proposed new equation is demonstrated.

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#2
Identification of the Soil–Structure Interaction System Using Earthquake Response Data

Author: Jun-Seong Choi, Jong-Seh Lee, Chung-Bang Yun | Size: 0.2 MB | Format: PDF | Quality: Original preprint | Publisher: Journal of Engineering Mechanics; Vol. 130 Issue 7 | Year: July 2004 | pages: p753-761, 9p | ISBN: 07339399

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This paper demonstrates how system identification techniques can be successfully applied to a soil–structure interaction system using the earthquake response data. The parameters identified are the shear moduli of several near-field soil regions and Young’s moduli of the shell sections of the structure. The soil–structure interaction system is modeled by the finite element method combined with the infinite element formulation for the unbounded layered soil medium. The simulated earthquake responses using the identified parameters are shown to be in excellent agreement with the observed response data. Prediction of the responses is also carried out for a larger earthquake event using the identified parameters as the initial properties in the equivalent linearization procedure. It has been found that the predicted responses are also compared very well with the measured responses.

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#3
Failure and Dilatancy Properties of Sand at Relatively Low Stresses

Author: Laurent Lancelot; Isam Shahrour; and Marwan Al Mahmoud | Size: 0.89 MB | Format: PDF | Quality: Original preprint | Publisher: Journal of Engineering Mechanics, Vol. 132 Issue 12 | Year: Dec2006 | pages: 1396-1399.


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#4
Application of the Viscoelastic Continuum Damage Model to the Indirect Tension Test at a Single Temperature

Author: Jaeseung Kim; West, Randy C. | Size: 0.37 MB | Format: PDF | Quality: Original preprint | Publisher: Journal of Engineering Mechanics. Apr2010, Vol. 136 Issue 4, | pages: p496-505.

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