Issue 14

B. M

. Chiaia et alii

, Frattura ed In

tegrità Struttural

e, 14 (2010) 45

-51; DOI: 10.322

1/IGF-ESIS.14.0 5

foll top sno the tria wo

owing statem ography of t wpack [13]. wind deflect ngular shape rk as a crack

ent: sponta he slope: the Studying the ors with a cr inside the sn arresters.

neous crow concave an methods of oss shape (Fi owpack of t

n fractures d convex rip defence aga g. 6) in the r he release ar

follow the s ples of the s inst avalanch idge of the av ea [14, 15]. O

ame path. T lope induce es, we have alanche basi bviously, th

his is due tension and identified tw n and (ii) the ese defence s

to the morp compression o typologies snow-grippe tructures mu

hology and zone inside of structures rs (Fig. 7) wi st be adapte

the the : (i) th a d to

(a) Figure 6 : (a) W flectors on the

(b) hape (Photo b x (AO) – basi

ind deflector ridge of Lava

with a cross s ncher – Morge

y Frigo, 2003) n (Photo by C

. eriani, 2000).

(b) Wind de

(a) 7 : (a) Snow-gri pr e snowpack cracking ha ontinuous (n of crack arre effectivenes ount directly ill be drawn.

(b) f release area ww.incofil.com D problem), path of the s (equipped w ds a new id t concept fo eak plane an

Figure

pper element. otected by Sno as a linear–el s been cons atural) and d sters is a fir s of the activ Mode II arr

(b) Example o w-grippers (w astic plate (2 idered. The iscontinuou st step towar e crack arres est on the w

of the avalanc ). the Mode I c crack has be ith a differe ea for active r dry snow a d the cohesi

he basin

conclusion, c pagation of erical inves ds) snowpac liminary resu estigation tak ore definite c

In pro num

onsidering th a weak layer tigations in c ks. The use lts testify the ing into acc onclusions w

rown fractur en investigat nt shapes an avalanche p valanches. O ve nature of

e after comp ed by mean d geometrie rotection. Th bviously, fur snow is nee

lete s of s of ese ther ded

voi pre inv bef

A C T

KNOWLEDG

MENTS

he finan Italia/Fr by Regio

cial support ancia (Alpi 2 ne Piemonte

provided by 007-2013) is and Italian M

Progetto S gratefully ac inistry of W

trategico RIS knowledged. ork and Soc

KNAT - O The research ial Security.

biettivo coop activity is f

erazione ter unded by gra

ritoriale euro nt co-suppo

pea rted

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