Structural Behavior of Thin-Walled Concrete-Filled Steel Tube Used in Cable Tunnel: An Experimental and Numerical Investigation
Table 3
Comparison of the maximal strain between FEA and test results.
Location
Specimen
ST-1
ST-2
ST-3
The outer edge
Vault
179.7
185.3
3.0%
124.2
134.8
7.9%
131.3
143.4
8.4%
Largest corner
−97
−108
10.2%
−66.3
−72.2
8.2%
−103.7
−103.4
3.0%
Top of the straight wall
−175
−185.8
5.8%
−145
−133
9.0%
−194.2
−191.2
1.6%
Foot
−122.9
−133.7
8.1%
−92.9
−98.9
6.1%
−125.3
−135.4
7.5%
The inner edge
Vault
−240.8
−252.7
4.7%
−192
−191.3
4.0%
−224.3
−247.3
9.3%
Largest corner
−188.1
−215.3
2.6%
−128.5
−147.9
1.3%
−175.8
−185.4
5.2%
Top of the straight wall
−156.2
−147.4
6.0%
−109.4
−100.3
9.1%
−149.9
−144.7
3.6%
Foot
−213.4
−230.3
7.3%
−164.5
−171.4
4.0%
−217.5
−233.7
6.9%
Note: means the maximum strain value of experiment and εFEM means the maximum strain value of FEM. Tensile strain is positive; compressive strain is negative.