【摘要】 在勘察过程中,对碎裂岩石很难取得岩块试样进行单轴抗压试验,由点载荷试验可求得点荷载强度指数,进而换算出岩石单轴抗压强度,对岩基承载力进行评价。文章通过工程实例,介绍了点荷载试验方法,并应用该方法结合波速试验、旁压试验对碎裂岩基中的人工挖孔嵌岩桩端阻力进行了评价,与岩基载荷试验对比表明该方法是行之有效的。更多还原

【Abstract】 It’s difficult to determine the compressive strength of fissured rock during investigating,the point load strength indexes of rock can be determined by point load test,from which the uniaxial compressive strength of rock can be calculated,and then the bearing capacity of rock foundation can be decided also. In this paper,the method of point load test with velocity test and pressurement for the evaluation of strength and end capacity of large- diameter rock- socket piles is introduced,and compared the results with those of load test of rock foundation. Through comparative testing,it shows the said method is effective.更多还原