Offshore Structure Platform Design - Offshore Structures: Design, Construction and Maintenance - page 106

F

1200

API design

600

0 150 300

Displacement (mm)

(a)

F

1200

600

API design

0 150 300

Displacement (mm)

(b)

F

1200

API design

600

0 150 300

Displacement (mm)

(c)

FIGURE 3.11 (a) X bracing with horizontal bracing and without a joint-can; (b) X bracing
with horizontal bracing and with a joint-can; (c) X bracing without horizontal bracing and without a
joint-can.

, which is the relation
between the bracing diameter and the chord diameter (d/D), and with a different
gap between the bracing (the gap is denoted by g).
Figure 3.12 presents the relation between the applied load and the frame dis-
placement for designs according to American Petroleum Institute (API) and Det
Norske Veritas (DNV). With decreasing

The test was performed for K bracing with different β

values, the redundancy will increase.
Also, with an increased gap between the braces, the ductility will increase, as
seen in the comparison of cases (c) and (d) in the figure.

β