Method for quickly detecting bearing capacity of natural foundation of low-filling shallow-digging roadbed

The invention discloses a method for quickly detecting the bearing capacity of a natural foundation of a low-filling shallow-digging roadbed. The method comprises the following steps that (1) the bearing capacity of the low-filling shallow-digging roadbed is analyzed; (2) the advantages, the disadvantages and the applicability of an existing roadbed resilient modulus determining method and the characteristics of a DCP method are presented; (3) the DCP method is introduced and testing procedures are conducted; and (4) the applicability of the DCP method for quickly detecting the bearing capacity of the low-filling shallow-digging natural foundation is verified. According to the method for quickly detecting the bearing capacity of the natural foundation of the low-filling shallow-digging roadbed, testing data are reliable, the operation and detection methods are easy, site limitation is avoided, the applicability is wide, and the method is more suitable for the detection of the natural foundation than other detection methods; and the penetration Dd detected by the DCP method has a good correlation relationship with the resilient modulus E0 and the CBR, and the method can conduct quick detection for the low-filling shallow-digging roadbed and has good promotion value.