Method for processing foundation through one-time pipe insertion and multi-time vacuum well point precipitation dynamic consolidation

Abstract

The invention relates to a method for processing a foundation through one-time pipe insertion and multi-time vacuum well point precipitation dynamic consolidation, which comprises the following steps: adopting a process combining a heavy-tamping method with suitable energy level and one-time pipe insertion and multi-time vacuum well point precipitation to accelerate the dissipation of excess pore water pressure caused by over-high water level and heavy-tamping constructions; forming a 'hard shell layer' with certain thickness through a surface layer to increase the diffusion effect of subsidiary stress so as to form a double-layer foundation; and reducing the differential settlement under the action of loads through the regulating action of the 'hard shell layer' so that the deformations of the entire field are harmonious and play a combined action to satisfy dual requirements on the foundation bearing capacity and the deformation. By combining the advantages that low-energy-level heavy-tamping greatly improves the surface layer bearing capacity and the vacuum well point precipitation accelerates the dissipation of the excess pore water pressure of the field, the invention provides the method for processing the foundation through the one-time pipe insertion and the multi-time vacuum well point precipitation dynamic consolidation, and the method has the advantages of manufacturing cost saving, quick construction, mature construction experience, simple process and remarkable effect.

Description

technical field [0001] The invention relates to a foundation treatment method, which is applied to the foundation treatment of cargo container yards, airports, port terminals, warehouses and other projects with small loads and large load action areas. Specifically, it is a method for solving the problem of insufficient surface bearing capacity. , A new method for the problem of thicker muddy soil in deep depths and large differential deformation under uniform loads over a large area. Background technique [0002] At present, the commonly used foundation treatment methods include surcharge preloading method, vacuum preloading method, excavation and replacement method, etc. High vacuum compaction method, dynamic compaction replacement method, cement-soil mixing pile method, vibratory impact method, grouting method, chemical mixing method, CFG pile method, compacted sandstone pile method, rigid pile, flexible pile, and rigid-flexible composite Pile foundation method, settlemen...

AI Technical Summary

Problems solved by technology

However, there is a problem of large engineering volume in "multi-pass precipitation and multi-pass compaction", which causes a lot of unnecessary duplication of labor, increases the time interval between compactions, and prolongs the total construction period.

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