盐雾预腐蚀对<strong>HRB400E</strong>抗震钢筋超低周疲劳性能的影响

盐雾预腐蚀对HRB400E抗震钢筋超低周疲劳性能的影响

谌理飞, 罗云蓉, 张应迁, 李辉, 李秀兰, 廖文丽

Effect of Pre-corrosion by Salt Spray on Extremely Low Cycle Fatigue Performance of HRB400E Seismic Steel Bar

CHEN Lifei, LUO Yunrong, ZHANG Yingqian, LI Hui, LI Xiulan, LIAO Wenli

表3 ELCF试验结果

Table 3 ELCF test results

Corrosion time/d	ε_a/%	ε_pa	ε_ea	N_f	ΔW_p/MJ·m^-3	ΔW_e/MJ·m^-3	ΔW_t/MJ·m^-3
0	3	0.0157	0.0143	98	21.3	8.2	29.5
	3.2	0.017	0.015	90	23.8	9	32.8
	3.5	0.0195	0.0155	61	28	9.6	37.6
	4	0.0237	0.0163	44	34.3	10.6	44.9
30	3	0.0159	0.0141	88	21	8	29
	3.2	0.0182	0.0138	86	24.6	7.6	32.2
	3.5	0.02	0.015	58	27.4	9	36.4
	4	0.0252	0.0148	40	36.2	8.7	44.9
60	3	0.0167	0.0133	84	20.7	7	27.7
	3.2	0.0184	0.0136	72	22.7	7.3	30
	3.5	0.021	0.014	50	27.3	7.3	34.6
	4	0.0255	0.0145	30	34.1	8.4	42.5
90	3	0.017	0.013	84	18.7	6.76	25.46
	3.2	0.0185	0.0135	83	20.4	7.29	27.69
	3.5	0.022	0.013	43	24.7	6.76	31.46
	4	0.026	0.014	31	31.8	7.84	39.64