混凝土疲劳试验.docx

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1、标准养护28d后最大弯芯荷载Mo（kN）初裂疲劳试验极限疲劳试验混凝土耦合作用预定荷载实际疲劳实际疲劳标号形式Fy(kN)峰值寿命峰值寿命Fs(kN)N（次）Fs,(kN)N2（次）C:0.35Mu=5.55.7636355.638512抗弯疲劳0.50Mu=7.98.1405638.136599Ca3OMu=15.7kN0.65Mu=10.21033289610.231547+有腐蚀+无电流0.80Mu=12.612.681012.7745表4.8Ca5O混凝土疲劳试验结果混凝土标号标准养护28d后最大弯芯荷载Mo（kN）耦合作用形式预定荷载Fy（kN）初裂疲劳试验极限疲劳试验实际峰值Fs（

2、kN）疲劳寿命Ni（次）实际峰值Fs,（kN）疲劳寿命N2（次）C:0.35Mu=6.36.41129116.371256抗弯疲劳0.50Mu=9.09.2359319.233695Ca50Mu=17.9kN0.65Mu=I1.611.81555911.713654+有腐蚀+无电流0.80Mu=14.314.5515014.44985表4.9Ca50z混凝土疲劳试验结果标准养护28d后最大弯芯初裂疲劳试验极限疲劳试验混凝土耦合作用预定荷载实际疲劳实际疲劳标号荷载Mo(kN)形式Fy(kN)峰值寿命峰值寿命Fs(kN)NM次）Fs,(kN)刈（次）C:0.35Mu=6.97.01785416.9

3、102151抗弯疲劳0.50Mu=9.910.28694510.184112Ca50zMu=19.7kN0.65Mu=12.813.04022312.939521+有腐蚀+无电流0.80Mu=15.815.91801715.817545表4.10Ca60z混凝土疲劳试验结果标准养护28d后最大弯芯荷载Mo（kN）初裂疲劳试验极限疲劳试验混凝土耦合作用预定荷载实际疲劳实际疲劳标号形式Fy(kN)峰值寿命峰值寿命Fs(kN)N（次）Fs,(kN)Nz(次)C:0.35Mu=7.57.62037417.5112365Ca60zMu=21.3kN抗弯疲劳0.50Mu=10.710.89736810.8

4、95896+有腐蚀+0.65Mu=13.813.93638013.835998无电流0.80Mu=17.0173456117.14469表4.11Ca30混凝土中标定钢筋在耦合作用下的锈蚀率和力学性能情况混凝土标号及耦合作用形式疲劳荷载级别钢筋标号钢筋原始质量(g)钢筋锈蚀后质量(g)钢筋锈蚀率(%)抗拉强度Rm(MPa)下屈服强度ReL(MPa)1738.12937.9410.49354504Ca3O-C0.35Mu1839.01238.8190.493525011940.32140.1150.51353512Ca3Q-C0.50Mu2039.21539.0200.503555112139.

5、74539.5620.46361516Ca3O-C0.65Mu2238.56638.3690.513605152339.31739.0890.58366521Ca3Q-C0.80Mu2438.58438.3650.57366523表4.12Ca50混凝土中标定钢筋在耦合作用下的锈蚀率和力学性能情况混凝土标号及耦合作用形式疲劳荷载级别钢筋标号钢筋原始质量(g)钢筋锈蚀后质量(g)钢筋锈蚀率()抗拉强度Rm(MPa)下屈服强度ReL(MPa)4938.95138.8510.26341512Ca5O-C0.35Mu5041.01240.9120.243425125139.65339.5210.333

6、46521Ca5O-C0.50Mu5238.56938.4680.263455225339.45739.3260.33351535Ca5O-C0.65Mu5438.62338.4950.333505345539.12439.0120.29366541Ca5O-C0.80Mu5639.32139.2130.27364540表4.13Ca50z混凝土中标定钢筋在耦合作用下的锈蚀率和力学性能情况混凝土标号及耦合作用形式疲劳荷载级别钢筋标号钢筋原始质量(g)钢筋锈蚀后质量(g)钢筋锈蚀率()抗拉强度Rm(MPa)下屈服强度ReL(MPa)8139.36539.2140.38329489Ca50zCO.

7、35Mu8240.32140.1780.353314898339.25439.0980.40334491Ca50zC0.50Mu8438.56938.4180.393334938540.25540.0900.41336496Ca50zC0.65Mu8639.25439.0840.433374958739.01838.8550.42340497Ca50zC0.80Mu8840.35540.1750.45339496表4.13Ca60z混凝土中标定钢筋在耦合作用下的锈蚀率和力学性能情况混凝土标号及耦合作用形式疲劳荷载级别钢筋标号钢筋原始质量(g)钢筋锈蚀后质量钢筋锈蚀率()抗拉强度Rm(MPa)下屈服强度ReL(MPa)11340.01439.8810.33294454Ca60z-C0.35Mu11438.08937.9850.2728945211538.54738.4120.35292455Ca60z-C0.50Mu11639.66239.5210.3629345611738.32038.1690.39298461Ca60zC0.65Mu11838.65938.5280.3429946311940.12439.9840.35304476Ca60z-C0.80Mu12040.31140.1560.38306477