Comprehensive treatment method of soft foundation

Abstract

The invention discloses a comprehensive treatment method of a soft foundation. The comprehensive treatment method comprises the following steps of firstly, designing and constructing vibro-replacement stone columns; secondly, designing, distributing and precipitating a drainage system for vacuum well points among the columns; thirdly, designing and constructing a broken stone hardcore; fourthly, designing and constructing low-energy dynamic consolidation; fifthly, leveling the broken stone hardcore. The comprehensive treatment method disclosed by the invention is a novel comprehensive treatment method of the soft foundation, which is formed by organically combining four foundation treatment techniques of vibro-replacement stone column, vacuum well point precipitation, a hardcore method and dynamic consolidation on the basis of the characteristics of a soft soil layer, and is great in treatment depth and improvement amplitude of foundation bearing capacity, and has technical and economic advantages of great improvement amplitude of the foundation bearing capacity, low construction cost and good treatment effect.

Description

technical field [0001] The invention relates to a treatment method for weak ground, in particular to a comprehensive ground treatment method integrating vibrating gravel piles, vacuum well point dewatering, gravel cushion and low-energy dynamic consolidation, belonging to civil engineering technology field. Background technique [0002] In the construction of building foundation treatment, there are many methods for weak foundation treatment, including cushion replacement method, drainage consolidation method, cement-soil mixing pile method, vibrating crushed stone pile method, sinking tube crushed stone pile method, etc. Using these methods to treat thick, high-saturation, fluid-plastic-soft-plastic muddy soil, silt, and silty clay foundations has its own advantages and limitations, and sometimes it is difficult to achieve the purpose of foundation treatment required by the design. The displacement rate of the composite foundation of vibrating gravel piles is large, but th...

AI Technical Summary

Problems solved by technology

[0002] In the construction of building foundation treatment, there are many methods for weak foundation treatment, including cushion replacement method, drainage consolidation method, cement-soil mixing pile method, vibrating crushed stone pile method, sinking tube crushed stone pile method, etc. Using these methods to treat muddy soil, silt, and silty clay foundations with thicker, high saturation, and flow-plastic to soft-plastic states has its own advantages and limitations, and sometimes it is difficult to achieve the purpose of foundation treatment required by the design

The displacement rate of the composite foundation of vibrating gravel piles is large, but the bearing capacity of the foundation after treatment is controlled by the bearing capacity of the soil around the pile; the dynamic compaction method is not suitable for highly saturated silt, silty clay, and silt in a soft plastic state. Soil foundation treatment; the foundation treatment period of the drainage consolidation method is long, and the increase in bearing capacity is low; the foundation treatment depth of the cushion method is small

Images