DISEO SSMICO POR DESPLAZAMIENTO CONCEPTOS BSICOS Santiago Pujol
DISEÑO SÍSMICO POR DESPLAZAMIENTO CONCEPTOS BÁSICOS Santiago Pujol PURDUE UNIVERSITY W. Lafayette Indiana Universidad del Valle Julio 2008
ftp: //ftp. ecn. purdue. edu/spujol/Cur so_Cali_08 spujol@purdue. edu
Reconocimientos: Purdue University, Mario Rodríguez, Mete A. Sozen
Confesiones: Traducciones Unidades ~180 diapositivas
Westergaard Newmark Sozen Otani Gulkan Takeda Shibata Shimazaki Lepage Schultz
". . a simple device can yield perhaps 80 percent of the truth whereas the next 10 percent would be difficult to obtain and the last 10 percent impossible. . “ Harald M. Westergaard
“Precise analyses for earthquake response involve techniques that are unnecessarily complicated in view of the many unknown factors in ground motion“ N. M. Newmark
“…an explanation of the analytical techniques gives a better understanding of the problem…“ N. M. Newmark
“…strength is necessary, otherwise, unimportant…“ H. Cross
Demanda de Desplazamiento < Capacidad de Desplazamiento
D<C
Intensidad Frecuencia (Terreno) D Frecuencia (Estructura) Resistencia
C Proporciones Nivel de Esfuerzos Detallamiento
D Intensidad PGA PGV
![1000 900 PGA [cm/s/s] 800 700 600 500 400 300 200 100 0 0](http://slidetodoc.com/presentation_image_h/23c791ccc4682e398b06377150d9838e/image-17.jpg "1000 900 PGA [cm/s/s] 800 700 600 500 400 300 200 100 0 0")
1000 900 PGA [cm/s/s] 800 700 600 500 400 300 200 100 0 0 20 40 60 Distancia [km] 80 100
4 3 1 2 7 6 5
1 2 3 4 5 6 7 ai/ai+1 cm/s/s Registro EW PGA 680 610 380 490 440 320 360 1. 1 1. 6 0. 8 1. 4 0. 9
250 m 2 cm/s 440 2 730 cm/s
D 2. 4 g
1 km
D PGA?
![ACELERACION [cm/s/s] 500 cm/s/s -500 cm/s/s 0 1 2 3 4 5 6 7](http://slidetodoc.com/presentation_image_h/23c791ccc4682e398b06377150d9838e/image-25.jpg "ACELERACION [cm/s/s] 500 cm/s/s -500 cm/s/s 0 1 2 3 4 5 6 7")
ACELERACION [cm/s/s] 500 cm/s/s -500 cm/s/s 0 1 2 3 4 5 6 7 8 9 Tiempo [s] 10 11 12 13 14 15
![VELOCIDA D [cm/s] 100 -100 0 1 2 3 4 5 6 7 8](http://slidetodoc.com/presentation_image_h/23c791ccc4682e398b06377150d9838e/image-26.jpg "VELOCIDA D [cm/s] 100 -100 0 1 2 3 4 5 6 7 8")
VELOCIDA D [cm/s] 100 -100 0 1 2 3 4 5 6 7 8 Tiempo [s] 9 10 11 12 13 14 15
1 2 3 4 vi/vi+1 cm/s Registro EW PGV 86 83 85 82 1. 04 0. 98 1. 04
250 m 120 cm/s 50 cm/s
![VELOCI DAD [cm/s] 100 0 1 2 3 4 5 6 7 8 9](http://slidetodoc.com/presentation_image_h/23c791ccc4682e398b06377150d9838e/image-29.jpg "VELOCI DAD [cm/s] 100 0 1 2 3 4 5 6 7 8 9")
VELOCI DAD [cm/s] 100 0 1 2 3 4 5 6 7 8 9 Tiempo [s] 10 11 12 13 14 15
![Desplazamiento No Lineal [cm] 0. 8 T=0. 1 s T=0. 5 s 0. 6](http://slidetodoc.com/presentation_image_h/23c791ccc4682e398b06377150d9838e/image-30.jpg "Desplazamiento No Lineal [cm] 0. 8 T=0. 1 s T=0. 5 s 0. 6")
Desplazamiento No Lineal [cm] 0. 8 T=0. 1 s T=0. 5 s 0. 6 0. 4 0. 2 0 0 5 10 2 PGA (m/s ) 15 20
![Desplazamiento No Lineal [cm] 0. 8 T=0. 1 s T=0. 5 s 0. 6](http://slidetodoc.com/presentation_image_h/23c791ccc4682e398b06377150d9838e/image-31.jpg "Desplazamiento No Lineal [cm] 0. 8 T=0. 1 s T=0. 5 s 0. 6")
Desplazamiento No Lineal [cm] 0. 8 T=0. 1 s T=0. 5 s 0. 6 0. 4 0. 2 0 0 0. 5 1 1. 5 PGV (m/s) 2
![100 VELOCIDA D [cm/s] V 2 -100 0 V 1 1 2 3 4](http://slidetodoc.com/presentation_image_h/23c791ccc4682e398b06377150d9838e/image-32.jpg "100 VELOCIDA D [cm/s] V 2 -100 0 V 1 1 2 3 4")
100 VELOCIDA D [cm/s] V 2 -100 0 V 1 1 2 3 4 5 6 7 8 Tiempo [s] 9 10 11 12 13 14 15
| V 1 / V 2 | 3. 5 3 2. 5 2 1. 5 1 0 0. 4 0. 8 1. 2 PGV (m/s) 1. 6 2
PGV = 50 cm/s Armenia : 30 cm/s Ica : 60 cm/s
!["…The anticipation of earthquakes in a given region [should be] expressed not in terms](http://slidetodoc.com/presentation_image_h/23c791ccc4682e398b06377150d9838e/image-35.jpg "\"…The anticipation of earthquakes in a given region [should be] expressed not in terms")
"…The anticipation of earthquakes in a given region [should be] expressed not in terms of … acceleration but in terms of … velocity. . . “ Harald M. Westergaard
- Slides: 35
