riguides de barras elementales y metodos de calculo.pdf

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    Ing. Jorge Luis Paredes Estacio

    UNIVERSIDAD PRIVADA ANTENOR ORREGO

    FACULTA DE INGENIERIA 

    ESCUELA PROFESIONAL DE INGENIERIA CIVIL

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    Cual es la Diferencia entre Rigidez y

    FlexibilidadRigidez: Fuerza o par , que aparece ante un

    alargamiento o giro unitario.

    Flexibilidad: Alargamiento o giro producidopor una fuerza o par unidad.

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    Sistema de Coordenadas

    Discretización Sistema de Referencia: Es un Sistema Cartesiano que permite la

    definición geométrica de la estructura (coordenadas de los nudos,longitudes de los elementos, etc.)

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    Sistema de Coordenadas

    Discretización Discretización: Proceso de disociar la estructura en

    elementos (unidos en los nodos)

    Sistema Local: En cada barra o elemento de la estructura

    de finiremos un sistema local, al que referiremos losmovimientos y fuerzas de cada barra.

    Sistema Global: Puesto que en el proceso de discretizaciónde la estructura se ha supuesto ésta formada por unconjunto de elementos y nodos, será preciso definir un

    sistema único, global, que permita referir a él de formaúnica y para toda la estructura los movimientos y fuerzas delos nodos.

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    Rigideces de barras elementales1. Barra de Celosía, estructuras planas (cerchas)

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    Rigideces de barras elementales1. Barra de Celosía, estructuras planas (cerchas)

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    Rigideces de barras elementales2. Barra en voladizo

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    Rigideces de barras elementales2. Barra en voladizo

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    Rigideces de barras elementales3. Barra de Estructura Plana Inextensible

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    Rigideces de barras elementales3. Barra de Estructura Plana Inextensible

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    Rigideces de barras elementales4. Barra de Estructura Plana Extensible

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    Rigideces de barras elementales5. Elemento de Pórtico Tridimensional

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    Rigideces de barras elementales5. Elemento de Pórtico Tridimensional

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    Rigideces de barras elementales6. Elemento Placa

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    Rigideces de barras elementales6. Elemento Placa

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    Rigideces de barras elementales6. Elemento Placa

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    Rigideces de barras elementales6. Elemento Placa

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    Matriz de Rigidez Directa – Con

    Matrices de Transformación

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    Matriz de Rigidez Directa – ConMatrices de Transformación

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    Matriz de Rigidez Directa –

    Cosenos Directores Formulas:

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    Matriz de Rigidez Directa –

    Cosenos Directores Formulas:

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    PARA ARMADURAS

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    MUROS DE ALBAÑILERÍA

    a=L/4

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    Método de Condensación Estática

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    Método de Condensación Estática

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    Método de Condensación Estática

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    ANÁLISIS MATRICIAL EN 3D

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    Hallar los desplazamientos laterales en cada Pórtico debido a las cargasactuantes que actúan en el C.G. de la Losa Rígida. Considerar E=2x10e6ton/m2.Considerar altura de piso a Techo de 3.50m. Hallar el diagrama de momentosen los pórticos debido a las fuerzas.

    COLUMNA SECCCIÓN

    C-1 0.30x0.50

    PRIMER PISO

    C-1   C-1

    C-1

    C-1

    C-1

    C-1

    C-1

    C-1

    C-1

    5 Ton

    3.5Ton

    8.5 Ton-m

    1 2 3

     A 

    B

    C

    V(0.30x0.60)   VP(0.30x0.60)

    V(0.30x0.60)   V(0.30x0.60)

    V(0.30x0.60)   V(0.30x0.60)

          V      (      0 .      3

          0    x      0 .      6

          5      )

          V

          (      0 .      3

          0    x      0 .      6

          5      )

          V      (      0 .      3

          0    x      0 .      6

          5      )

          V

          (      0 .      3

          0    x      0 .      6

          5      )

          V      (      0 .      3

          0    x      0 .      6

          5      )

          V

          (      0 .      3

          0    x      0 .      6

          5      )

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    ANÁLISIS MATRICIAL EN 3D Ley de Hooke Generalizado

    Donde:

    Desplazamiento Lateral:

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    Caso especial Rigidez lateral