Eurocode_8_existant_cle0f6cad.pdf

7/25/2019 Eurocode_8_existant_cle0f6cad.pdf

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PLAN EUROPE

Projet Eurocodes

Action A10

Dimensionnement des renforcements

du bti existant sous laction du sisme

Guide dapplication de lEurocode 8 partie 3

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Plan EuropeAction A10

Dimensionnement des renforcements du bti existantsous laction du sisme

Guide dapplication de lEurocode 8 partie 3

2006


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SOMMAIRE

1. OBJET 4

2. DOMAINE DAPPLICATION 5

3. DFINITIONS 5

4. RAPPEL DE LA MTHODOLOGIE DE LEUROCODE 8 PARTIE 3 6

4.1. DMARCHE GNRALE 6

4.2. INVESTIGATION PRALABLES 7

4.3. DTERMINATION DU NIVEAU DE RENFORCEMENT REQUIS 11

4.4. EVALUATION DE LA CAPACIT RSISTANTE 12

4.4.1. NIVEAUX DANALYSE 13

4.4.2. MTHODES DANALYSE GLOBALE 15

4.4.3. ANALYSE LOCALE DES LMENTS EN BTON ARM 15

4.4.4. ANALYSE LOCALE DES LMENTS EN ACIER ET LMENTS MIXTE ACIER BTON 16

4.4.5. ANALYSE LOCALE DES LMENTS EN MAONNERIE 18

5. EXEMPLES DAPPLICATION 19

5.1. RENFORCEMENT DLMENTS DE STRUCTURE 19

5.1.1. RENFORCEMENT DE LA RSISTANCE EN FLEXION CAS DES POUTRES. 19

5.1.2. RENFORCEMENT DE LA RSISTANCE AU CISAILLEMENT CAS DES POTEAUX 255.1.3. RENFORCEMENT EN FLEXION DES MURS 45

5.1.4. RENFORCEMENT AU CISAILLEMENT DES MURS 50

5.2. RENFORCEMENT DU SYSTME DE CONTREVENTEMENT 54

5.2.1. RENFORCEMENT DES MURS ET VOILES 54

5.2.2. AJOUT DE SYSTMES DE CONTREVENTEMENT 54

5.2.3. RENFORCEMENT DES PLANCHERS 56

5.3. RENFORCEMENT DES LIAISONS 58

5.3.1. RENFORCEMENT DES LIAISONS EN BTON 58

5.3.2. LIAISONS ENTRE LMENTS EN ACIER 64

5.3.3. CAS DES CHARPENTES EN BOIS. 67

5.4. DUCTILIT LOCALE 67

6. RFRENCES 71


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mbj 39,0= ! !1 ! I

kNVjhd 908=

mhjw 37,0= ! ! , ! , !

/ ! ,

mhjc 24,0= ! ! !


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MPafcd 205,1

30==

MPafctd 33,1

5,1

2== // @ !?$*+0 , 8 !

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L . ! 2

33,120*128,033,1

24,0*39,0

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#?! '"'""?@,, !. . ! !2

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fAAfA 8,0121 +

2

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jc

shish

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2,

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3

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cmAis =


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B.41 min 2,81

Vrifier quemin

bta>btamin.Dans le cas contraire il faut modifierla section ou la gomtrie desjarrets.

OK

B.42 2248 Vrification de la ristance de lasemelle des jarrets doit tre < Ahf mm2 OK

b/t 2,37Elancement de la semmelle desjarrets (45/19)

B.43 8,14

Vrification de la stabilit de lasemelle des jarrets doit tre > bhf/thf

OK

205critre de vrification de larsistance des mes des jarrets mm

B.44 thw 221

Vrification de la ristance de l'me

des jarrets doit tre < 3/,dyhwf :

formule non homogne, ne faisant

pas intervenir thwet dont ladimension n'est pas celle del'paisseur de l'me mm

2 ?

26,7 Elancement del'me des jarrets

26,85Vrification de la stabilit de l'medes jarrets doit tre > llancement

OK

"! . ! ! , !!/0 ! , ?>/3 . ! ,, - ? " "8@3

+I.. , ' + &,

' J

# E E ! . 2

2 66

#1 2 *4 //

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Rfrence Formule Valeur Commentaire Unit Vrifiaction

db 360 hauteur poutre mm

bf 170 largeur de la semelle

tf 12,7 paisseur de la semelle mm

Zb 1019moment plastique de lapoutre cm3

B.5.1(5) fyb 295,8

limite lastique de la poutretenant compte du coefficientde confiance Mpa


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Ab 72,73 section de la poutre cm2

Ib 16270 inertie de la poutre cm4

Sx 904module dlasticit de lapoutre selon l'axe fort cm3

L 7 porte m

a 102 position de la zone affaiblie mm

b 270 largeur de l'affaiblissement mm

s 237 position du centre de la rotule mm

g 34profondeur del'affaiblissement mm doit rester infrieur 0.25bf

B.14 ZRBS 719module plastique de la zoneaffaiblie cm3

B.15 Mpl,Rd,RBS 212,7 moment plastique de la rotule kN.m

w 20 charge uniformment rpartie kN/m

L' 6,53 porte entre rotules m

B.16 Vpl,RBS 130 effort tranchant dans la rotule kN

Mpl,Rd,b 301moment plastique de lapoutre hors zone affaiblie kN.m

McfEd 243

moment au niveau dupoteau, (remplacer e par sdans la formule)

doit tre compris entre 85%et 100% du moment MplRdb,sinon augmenter g

r 285 rayon de la dcoupe mm

"! @ . ! ,, !1), , @ !/8/ !!3 . !! !?/ , , /3 $0 ! , , 1 1 !?8 / /!13 "! ?1 ? / / 8, ,3


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" 010,/2

$4+ 2 $::4+ ^ ; !! , ! / ^ 2$.! / 8>/ = 0 ++0 %L& /8 *63

$4+ 2 $::4+ ^ ; !! , ! / ^ 2&C1! 1!0 / C1! , ! 8>/ = 0 ++0%L& ,/8 *63

/ = 0 4+X+0 %L& L8 *63

$++ 2 $::++ ^ ; !! ^ + 2 &C1!1!0 C1! , ! 8>/ = 0 **++0 %L& L8 *63

$++ 2 $::++ ^ ; !! // = 0 **++0 %L& _ *63

&JH ; &/ ,/ 8>

Documents

Eurocode_8_existant_cle0f6cad.pdf