Novel deep soft soil foundation strengthening pile

Abstract

The invention discloses a novel deep soft soil foundation strengthening pile. The novel deep soft soil foundation strengthening pile is arranged in three layers in the radial direction and comprises an inner layer of pile body, a middle layer of latticed cylinder and an outer layer of water-permeable geomembrane; the latticed cylinder is defined by meshes made of modified polyethylene or modified polypropylene. A traditional gravel pile serves as the prototype, the water drainage innovative thinking is achieved by using and fusing a geotechnical bagged sand pile for reference and additionally arranging an enclosure and a water drainage pipe pile, the enclosure measure intensity and water drainage capacity of a discrete pile body are improved at the same time, the implementation difficulty and measure manufacturing cost of the pile bodies are reduced, defects of the traditional gravel pile and the geotechnical bagged sand pile are overcome and the advantages of the two piles are strengthened.

Description

technical field [0001] The invention relates to the technical field of soft soil foundation reinforcement, in particular to a novel deep and thick soft soil foundation reinforcement pile. Background technique [0002] At present, the reinforcement of soft soil foundations includes the newly built and rebuilt passenger and freight railways, urban railways, intercity railways, high-speed railways, urban rail transit and other rail traffic, highways, expressways, municipal roads and other road traffic, and airports, ports, etc. Reinforce the soft soil foundation of large-scale site projects such as docks, logistics bases, power stations, comprehensive transportation hubs, underground deep foundation pit projects, and wetland landscape reconstruction. [0003] The functions of traditional soft soil foundation reinforcement treatment measures are relatively single, and can be roughly divided into two categories in a sense: one is drainage consolidation technology, which creates d...

AI Technical Summary

Problems solved by technology

[0003] The functions of traditional soft soil foundation reinforcement treatment measures are relatively single, and can be roughly divided into two categories in a sense: one is drainage consolidation technology, which creates drainage conditions to accelerate and improve the consolidation effect of soft soil, fundamentally Improve the performance of soft soil engineering, such as bagged sand wells, plastic drainage boards, vacuum preloading, etc., but these technical means, except vacuum preloading, have a long consolidation period and slow results, and ultimately improve the bearing capacity of the foundation and The ability to control settlement is very limited, and it is only suitable for the reinforcement of shallower soft soil foundations that do not require high bearing capacity of composite foundations, especially those that do not require high settlement control.

The other is to use the pile reinforcement method to form a composite foundation together with the soil between the piles to improve the comprehensive bearing capacity and settlement control capacity of the foundation. Compaction replacement piles, such as compacted gravel cushion, compacted gravel piles, gray (cement) soil compaction piles, etc.; (2) Flexible piles with better strength and integrity, such as cement-soil mixing piles, rotary grouting piles, CFG (3) Semi-rigid and rigid piles with better strength and integrity, such as plain concrete piles, reinforced concrete piles, etc. This kind of pile reinforcement method has quick results, but it needs to rely on additional stress to affect one or more layers within the depth range. The bearing layer of the natural foundation is good, and the soil between the piles cannot continue to be improved over time, and the reinforcement effect may attenuate in the later stage

Images