A Numerical Study on the Influence of Bolt Corrosion on the Long-Term Behavior of Steel–Concrete Composite Beams

Table 3

Comparison of long-term deflections (mm) between the loaded specimens at the 225^th day.

	Unloaded specimen without corrosion			Loaded specimen at a 7-day age			Loaded specimen at a 28-day age
Specimen number	SCB-1	SCB-4	SCB-5	SCB-2	SCB-7	SCB-8	SCB-3	SCB-10
Actual corrosion rate (%)	0	3.81	9.77	0	5.08	7.03	0	6.25
Long-term deflections	0.879	0.918	1.067	1.490	2.002	2.001	1.253	1.733
SCM	0.906	0.329	0.169	1.472	1.842	1.886	1.284	1.843
Relative error (%)	3.02	−64.13	−84.10	−1.23	−8.01	−5.74	2.50	6.35
DMM	0.906	0.949	1.069	1.472	1.880	1.993	1.284	1.730
Relative error (%)	3.02	3.35	0.27	−1.23	−6.10	−0.39	2.50	−0.15
CEB-FIP 1990	0.63	—	—	1.18	—	—	1.14	—
Relative error (%)	−28.41	—	—	−20.81	—	—	−8.80	—
ACI 209R	0.93	—	—	1.45	—	—	1.28	—
Relative error (%)	5.8	—	—	−2.68	—	—	2.15	—
Peng [9] calculated values	0.99	1.04	1.18	1.64	1.89	2.16	1.34	1.85
Relative error (%)	12.50	13.04	13.04	13.04	−5.50	8.00	7.20	6.94