Manual hole digging non-uniform pile support construction technology

The discloses a manual hole digging non-uniform pile support construction technology for construction along the inner side of the former support structure, the construction steps are as follows: (1) digging the first order, the second order and the third order hole digging piles according to the process of every three for one; (2) forming crown beam at the top of pile for enhancing support structure integral rigidity, having layering construction for horizontal support or anchor cable according to the design calculation requirement, after getting the design strength requirement, excavating the foundation trench earthwork to the bottom in the foundation trench; (3) making level for the manual hole digging non-uniform pile, having the water proof construction, making the basement bottom plate, casting the bottom plate concrete with the former support pile; (4) removing the second strengthening anchor cable or removing the support, finishing the basement structure; (5) extending the rebar in the hollow part of the manual hole digging pile into the basement bottom plate as basement structure pile and anti-floating pile. The manual hole digging non-uniform pile support construction technology solves the problem that the big diameter strengthening support pile construction machinery cannot be contained for the inner support at upper part or convex waist beam while the remain construction space between the support pile and the basement outer side line is small.