452
R. Sharma and V. Tanna
structure elements presented in Figs. 9, 10 and 11 respectively. The analysis and
conclusive test results are presented in Table 2.
Figure 9 represents the bending stress and deflection in varying load condition of
selected central pipe of structure. The bending moment and section modulus were
calculated and compared with permissible bending stress and deflection taking yield
stress of material account. Table 2 shows the safe limit of bending stress 234 MPa
of central pipe which is under permissible limit of 248 MPa at 3 kN/m load.
0
100
200
300
400
500
3
4
5
Bending Stress
(MPa)
Bending Stress MPa v/s UD Load KN/m
UDL kN/m
Fig. 9 Bending stress of various load of central pipe
0
50
100
150
200
250
300
350
3
4
5
6
7
Bending Stress MPa v/s UD Load (kN/m)
Bending Stress MPa v/s Point load (kN)
UDL Load (kN/m) and Point Load (kN)
Bending Stress (MPa)
Fig. 10 Bending stress at various load of spiral ladder tread
Point Load (kN)
0
50
100
150
200
250
300
3kN 4kN 5kN 6kN 7kN 8kN 9kN 10kN 11kN 12kN 13kN
Bending Stress MPa
Bending Stress MPa v/s Point Load kN
Fig. 11 Bending stress at various loads of vessels joining platform bridge structure