Wind Resistant Design AIJ Recommendations for Wind Loads on ...
Wind Resistant Design AIJ Recommendations for Wind Loads on ...
Wind Resistant Design AIJ Recommendations for Wind Loads on ...
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GLF <str<strong>on</strong>g>for</str<strong>on</strong>g> <str<strong>on</strong>g>Wind</str<strong>on</strong>g> <str<strong>on</strong>g>Loads</str<strong>on</strong>g><br />
<strong>on</strong> Roof Structures<br />
G<br />
C<br />
R<br />
= 1±<br />
G<br />
R<br />
12.3r<br />
2<br />
Re<br />
( 1+<br />
R )<br />
1−<br />
r<br />
Re<br />
c<br />
+ 0.3r<br />
2<br />
c<br />
( 1+<br />
R ) 0. 3<br />
2<br />
= ± 0.25 12.3r<br />
Re<br />
Re<br />
+<br />
C pi<br />
−0.4,<br />
C ≠ 0<br />
=<br />
R<br />
C pi<br />
−0 .4, C = 0<br />
=<br />
R<br />
R<br />
( )<br />
2<br />
G +<br />
r<br />
2<br />
R<br />
= 1±<br />
12.3rRe 1+<br />
RRe<br />
0. 3rc<br />
R<br />
Re,<br />
Re<br />
, and<br />
r c<br />
C pi<br />
= 0<br />
: Parameters depending <strong>on</strong> roof<br />
beam directi<strong>on</strong>, dynamic<br />
characteristics of roof structure,<br />
and wind characteristics<br />
Al<strong>on</strong>g-wind <str<strong>on</strong>g>Loads</str<strong>on</strong>g> <strong>on</strong><br />
Lattice Towers W D (N)<br />
at Height Z<br />
W = q<br />
q Z<br />
C D<br />
G D<br />
A<br />
D<br />
Z<br />
C<br />
D<br />
G<br />
D<br />
A<br />
F<br />
: Velocity pressure at height Z<br />
: Aerodynamic shape factor<br />
: Gust loading factor<br />
: Projected area<br />
21
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