桩基抗拔裂缝计算

抗拔力=700kN桩径=600mmC45配筋10φ250.3mmAS=4906.25mm2Ate=282600mm2σs=142.68MPa混凝土ES=31500MPaftk=2.51MPafc=21.1MPa钢筋ES=200000MPafy’=360MPafy=360MPaαcr=2.7cs=65mmνi=1.0=0.017取ρte=0.017=25.000=0.441取ψ=0.441=0.203mmωlim=0.3mm配筋：σs=142.68MPafy’裂缝：ωmaxωlim四、结论满足要求。满足要求。混凝土等级桩基抗拔裂缝承载力计算一、参数ωlim=ρte=（As+Ap）/Atedeq=∑nidi2/∑niνidiψ=1.1-0.65*ftk/（ρteσs）ωmax=αcrψσs（1.9cs+0.08*deq/ρte）/Es三、计算二、取值