某橋墩基礎為擴大基礎,基底截面如圖所示,其中縱向d=300cm,橫向b=600cm,豎向力N=2500kN,縱向水平力P=650kN,縱向彎矩M=1950kN·m?;A與土壤的摩擦系數(shù)f=0.33。檢算基底的滑動穩(wěn)定性(滑動穩(wěn)定性系數(shù)Kc≥1.3)和傾覆穩(wěn)定性(傾覆穩(wěn)定性系數(shù)K0≥1.5)
某重力式橋墩,基底截面如圖所示,截面尺寸為縱向d=230cm,橫向b=350cm,豎向力N=12700kN,水平力P=3140kN,縱向彎矩M=3815kN·m。基礎與土壤的摩擦系數(shù)f=0.35。驗算: (1)基底的滑動穩(wěn)定性(《橋規(guī)》規(guī)定:滑動穩(wěn)定性系數(shù)Kc≥1.3) (2)基底的傾覆穩(wěn)定性(《橋規(guī)》規(guī)定:傾覆穩(wěn)定性系數(shù)K0≥1.5)