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Advances in Civil Engineering
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2020
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Article
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Tab 4
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Research Article
Experimental Investigation of Progressive Collapse of Prestressed Concrete Frames after the Loss of Middle Column
Table 4
DIFs at different loading stages.
Specimen ID
DIF
P
DIF
u
S1
1.46
1.57
S2
1.44
1.24
S3
1.48
1.62
S4
1.49
1.68
S5
1.34
1.83