Recursos de colección

Caltech Authors (158.172 recursos)

Repository of works by Caltech published authors.

Group = Earthquake Engineering Research Laboratory

Mostrando recursos 1 - 4 de 4

  1. Can we measure deformation of short and stiff bridges when a train passes over using a camera?

    Taghavi Larigani, Shervin; Heaton, Thomas H.
    [no abstract]
    (video/mpeg) - 28-ago-2017

  2. Can you measure the weight of a truck with a commercial camera?

    Taghavi Larigani, Shervin; Heaton, Thomas H.
    [No abstract]
    (video/mpeg) - 28-ago-2017

  3. Modal coupling and earthquake response of tall buildings

    Hoerner, John Brent
    The major dynamic features of tall buildings are within the scope of a shear beam model. Herein the usual one-dimensional model is extended to three dimensions to include modes with translational and rotational components. The analysis is restricted to the continuous model with linear response. A class of models for tall buildings is presented which possesses three sets of mutually orthogonal coupled modes. The amount of modal coupling is related to the eccentricities divided by the translational-torsional frequency differences. Strong modal coupling can occur if the eccentricities and frequency differences are small, as in a rectangular building with a smooth distribution...
    (application/pdf) - 20-oct-2017

  4. Dynamic Analysis of Coupled Shear Walls and Sandwich Beams

    Skattum, Knut Sverre
    A study is made of the free vibration of planar coupled shear walls, a common lateral load-resisting configuration in building construction where two walls are coupled together by a system of discrete spandrel beams. The differential equations and boundary conditions are obtained by the variational method, and by assuming that the spandrels can be replaced by a continuous system of laminae, or small beams. Natural frequencies and mode shapes are determined, and the results are presented in a number of figures from which the natural frequencies of any coupled shear wall can be extracted. The importance of including vertical displacement in...
    (application/pdf) - 20-oct-2017

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