Construction process for miniature steel pipe pile reinforced sedimentation base

Abstract

The invention relates to technology for reinforcing a settlement foundation through miniature steel pipe piles, which comprises: symmetrically distributing a plurality of reinforcing foundation piles on the circumference of the settlement foundation required to be reinforced; determining a pile position first, excavating down an operating foundation pit in the pile position, drilling down a pile hole in the pile position on the basis of the operating foundation pit, and performing piling; performing bar planting in corresponding positions of the settlement foundation after the miniature steel pipe piles are piled, applying prestress on the tops of the piles, welding connecting pieces and the outer walls of the steel pipe piles, and completing concrete casting after welding is over; and finally performing foundation pit backfill; or performing foundation pit backfill after manufacturing small reinforced concrete bearing platforms on pile heads and the connecting pieces. The technology aims at the problem of foundation settlement of sludge or soft soil foundation equipment of a substation and the requirement of reinforcing the settlement equipment foundation under the conditions of limited safe altitude of 2.2 meters and electrified operation, achieves the aim of preventing continuous settlement of the settlement foundation, has reliable reinforcement effect and quality, and reduces general expenses of equipment overhaul and replacement and power failure due to equipment overhaul and replacement.

Description

Technical field [0001] The invention relates to a method for strengthening a settlement foundation, in particular to a construction process for strengthening a settlement foundation with a miniature steel pipe pile. Background technique [0002] The rapid economic development in my country’s coastal areas requires a large number of new substations, some of which are inevitably built on weak foundations. Any errors in the exploration, design, and construction of substations on coastal sea and lake silt foundations may cause the settlement of the substation equipment foundation, which will directly affect the safe operation of power facilities. Since the development of foundation settlement takes a long time, such accidents are often discovered after the equipment is put into operation. Reinforcing the settlement foundation under high-voltage live operation conditions will face great risks. The existing reinforcement methods and mechanical equipment are both Can not meet the techni...

AI Technical Summary

Problems solved by technology

[0006] (2) Various existing construction machines are restricted by the safe construction distance and cannot enter the site for construction;

[0008] (4) Due to the light weight of the equipment and foundation, the reaction force of the reinforced foundation cannot be used during reinforcement;