某岩基各项指标为:γ=25kN/m3,c=30kPa,φ=30°,若荷载为条形荷

书海库2019-12-17  16

问题 某岩基各项指标为:γ=25kN/m3,c=30kPa,φ=30°,若荷载为条形荷载,宽度1m,则该岩基极限承载力理论值为:A. 1550kPa B. 1675kPa C. 1725kPa D. 1775kPa

选项

答案B

解析提示:计算承载力系数[img]/upload/tiku/190/2459706_1.jpg[/img]极限承载力为qf=0.5γbNγ +cNc =0. 5 X 25 X 1 X 26 + 30 X 45 = 1675kPa
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