392
11 Experimental and Numerical Study of UHPCC-FST Columns …
0
2 0
4 0
6 0
8 0
1 0 0
0
40
80
120
160
200
Time (ms)
Mid-span deflection (mm)
ALE method
Velocity method
SDOF method
Expermental residual deformation
Remennikov and Uy (2014)
0
5 10 15 20 25 30 35 40 45 50
-10
0
10
20
30
40
50
60
Time (ms)
Mid-span deflection (mm)
ALE method
Velocity method
SDOF method
Expermental data
Remennikov and Uy (2014)
(a)
(b)
0
5
10
15
20
25
30
35
40
0
40
80
120
160
200
240
280
Time (ms)
ALE method
Velocity method
SDOF method
Expermental residual deformation
Remennikov and Uy (2014)
Mid-span deflection (mm)
(c)
Fig. 11.20 Analytical mid-span deflection time histories for column specimens a C5 b S1A c HC-1,
reprinted from Wu et al. (2020), copyright 2020, with permission from Elsevier
11.5 Summary
The blast performance of ultra-high performance cementitious composites filled steel
tube (UHPCC-FST) columns subjected to close-range explosion were investigated
experimentally and numerically in the present study. The main works and conclusions
can be drawn as follows:
(1) The field test of four circular UHPCC-FST column specimens subjected to
the close-in TNT charge explosion with the scaled standoff distance of 0.12 ≤
Z≤0.14 m/kg
1/3 were conducted, and the superiority of UHPCC-FST column
against the near field explosion is validated. It shows that both the global and
local deformations are induced by the close-range explosions, and the above
deformations are becoming more serious with reducing the scaled standoff
distance.