The invention belongs to the technical field of cloth bag
pile structures, and discloses a steel reinforcement framework
structure system for expanding a geotechnical cloth bag and a using method. Comprising a multifunctional integrated reinforcement cage framework, a multi-stage self-adaptive variable-
diameter expansion mechanism, a geotechnical cloth bag and a program-controlled
cascade power transmission system,
cascade steel strands are asymmetrically tensioned through a
winding machine, and all stages of hinge units are driven to sequentially turn over according to a preset
time sequence; and the sleeve type elastic telescopic arc-shaped
pipe is driven to abut against the irregular hole wall in the telescopic compensation state,
grout is injected into the double-layer sandwich sealing cavity through the grouting flow channel synchronously, and a plurality of active
grout leakage prevention barriers are constructed in the complex
karst stratum through the composite sealing pressure intensity generated by mechanical
extrusion and chemical expansion. The problems of serious
slurry leakage, out-of-control filling coefficient,
pile breaking hidden danger and the like caused by irregular hole walls in complex
karst stratum construction of traditional cloth bag piles can be effectively solved, and the cloth bag
pile has the characteristics of high construction precision, low material loss, high stratum self-
adaptive capacity and the like.