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  • Open AccessOpen Access

    ABSTRACT

    Numerical study of retrofitted deep coupling beams by bolting restrained steel plate

    B.Cheng1, R.K.L. Su1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.15, No.3, pp. 75-84, 2010, DOI:10.3970/icces.2010.015.075
    Abstract Deep reinforced concrete (RC) coupling beams with low shear span ratios and conventionally reinforced shear stirrups tend to fail in a brittle way with limited ductility and deformability under reversed cyclic loading. Experimental studies have shown that bolting restrained steel plate (BRSP) to existing deep RC coupling beams can enhance the deformability and energy dissipation while maintaining the flexural stiffness, improving the beams' performance during an earthquake. In this study, a nonlinear finite element package ATENA was used to simulate the overall behavior of three previously tested BRSP retrofitted coupling beams. This paper presents the More >

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    774

  • Open AccessOpen Access

    ABSTRACT

    General ray method for solution of the Dirichlet boundary value problems for elliptic partial differential equations in domains with complicated geometry

    A. Grebennikov1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.15, No.3, pp. 85-90, 2010, DOI:10.3970/icces.2010.015.085
    Abstract New General Ray (GR) method for solution of the Dirichlet boundary value problem for the class of elliptic Partial Differential Equations (PDE) is proposed. GR-method consists in application of the Radon transform directly to the PDE and in reduction PDE to assemblage of Ordinary Differential Equations (ODE). The class of the PDE includes the Laplace, Poisson and Helmgoltz equations. GR-method presents the solution of the Dirichlet boundary value problem for this type of equations by explicit analytical formulas that use the direct and inverse Radon transform. Proposed version of GR-method justified theoretically, realized by fast algorithms and More >

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    778

  • Open AccessOpen Access

    ABSTRACT

    Study on fracture behaviors of concrete using electronic speckle pattern interferometry and finite element method

    Helen Hongniao Chen1, Ray Kai Leung Su1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.15, No.3, pp. 91-102, 2010, DOI:10.3970/icces.2010.015.091
    Abstract In this study, Electronic Speckle Pattern Interferometry (ESPI) technique was used to measure the surface displacement and strain fields around cracks in concrete beams. ESPI has high accuracy and can determine full-field deformations of concrete. However, tiny rigid-body movements of beam specimens can spoil the ESPI measurement and cause virtual deformations and false strains. Based on the theory of geometrical optics, this paper proposes a method to eliminate the false strains caused by rigid-body motion. The correction procedure was validated experimentally. Furthermore, the crack evolution in a pre-notched beam is presented. The critical minimum crack More >

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    708

  • Open AccessOpen Access

    ABSTRACT

    Numerical simulation of fire and smoke transport for an old-style apartment fire

    C.S. Lin, T.C. Chen, C.C. Yu ,M.E. Wu, Y.H. Tu1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.15, No.3, pp. 103-110, 2010, DOI:10.3970/icces.2010.015.103
    Abstract Most old apartments in Taiwan lack fire prevention equipment, making fire awareness and escape difficult, as well as timely fire fighting, which leads to increased death tolls from fire incidents. This research utilizes Fire Dynamics Simulator (FDS) software to analyze and simulate the fire accident that occurred in a single old-style five-story apartment on Siu-Lang Road, Chung-Ho City. In this event, many occupant vehicles were parked at the front door of the apartment building or in nearby parking lanes. The fire engine can only drive in after vehicles were cleared from the fire area, a More >

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