PSI - Issue 11

Gloria Terenzi et al. / Procedia Structural Integrity 11 (2018) 161–168

166

6

Terenzi G,

Costoli I, Sorace

S, Spinelli P / St

ructural Integrity

y Procedia 00 (2

018) 000–000

beam dam syst acco

s consists in aged welds f em in 16 ver rding to the c

welding sh rom the risk o tical alignmen riterion discu

aped plates o f collapse. Th ts, all adjace ssed in the fo

n the diagona e global seis nt to the buil llowing sectio

l profiles ov mic retrofit st ding corners. ns.

er their entir rategy is repr The incorpo

e length, in o esented by th rated FV dev

rder to prote e installation ices were des

ct the of the igned

SDE FDE

BDE

BDE

FDE

LS

LS

MCE

SDE

MCE

OP

OP

Storey

Storey

DL

DL

Y Direc

tion

X Di

rection

a )

b )

ix

iy

Fig. 6. C

urrent condition

s. Normalized int

erstorey drift env

elops in X ( a ) an

d Y ( b ) direction

s for the four seis

mic levels.

1. Mechanica e dissipative ure 3), on th storey. A vi dampers are trated by the

l characterist braces were e ground stor ew of the fini installed in p drawings in t

ics of FV dev incorporated ey, and the B te element m airs at the tip he same Figu

ices in the B2-B3 1-C1, B2-B3 odel includin of the supp re.

4. Th

, B2-C2, B5-B , B5-B6, B7-C g the seismic orting diagon

6, B6-C6, E 7, E1-F1, E7 protection sy al trusses, wi

2-F2, E6-F6, -F7, F5-F6, stem is show th inverted V

F2-F3, F5-F6 F2-F3 bays, o n in Figure 7 -shaped layo

bays n the . The ut, as

(Fig first FV illus

Fig.

7. Finite elemen

t model of the bu

ilding incorporat

ing the dissipativ

e bracing system

and installation

details.

D effe beh 199

ifferently from cts, which re aviour of FV 9; Sorace and � = 2 ( ) = F t k x ne t

other classe presents an e devices is ch Terenzi 2001 � � ( �| � ( | k k )

s of dampers ffective prop aracterized by ): �

, FV devices erty for rathe the followin

provide a ver r stiff structu g damping an

y high dissipa res, like the d elastic resp

tive action w case study on onse force co

ith small stiff e. The mech mponents (Te

ening anical renzi

(1) (2)

5 1/5 ) ( )     x t

1 ( ) (    

1 + + −

2

0 F k x t 1 (