The Indoor Model Test Study On The Effects Of The Drainage Condition And The Diameter And Length Of The Drainage Pine Poles Processing Of Soft Soil Foundation

As the world's population increase,the development and progress of society.The engineering construction activity is increasing,which is bound to lead to more and more engineering construction will be construction on soft soil foundation that is a kind of soft soil foundation bad foundation.Therefore,the higher requirement for soft soil layer,the engineering technicians must take the effective reinforcement measures,make it meet the design requirements.Now there are many methods of deal with soft soil foundation,the use of a lot of cement,sand and stone in these methed,which is very serious to the environment pollution.As the improvement of environmental requirements,and now has natural,adoption of environmental friendliness of pine piles that the old method of processing soft soil foundation has caused people's attention again.The pine piles have many advantages,such as natural,adoption of environmental friendliness and so on.In addition the pine piles have no drainage function,etc.For this defect,the research group put forward by drainage pine piles which combined drainage geotextile with pine piles.This paper that the basis of predecessors' preliminary exploration research on drainage pine piles deal with soft soil foundation,which to establish indoor model test for further analysis,the main research content:(1)Study on the basic physical and mechanical indexes of the soil samples;(2)The research of different diameter pine poles treatment effect of soft soil foundation,the largest consolidation pressure is 200 kpa;(3)The research of different diameter drainage pine poles treatment effect of soft soil foundation,the largest consolidation pressure is 200 kpa;(4)The research of different length pine poles treatment effect of soft soil foundation,the largest consolidation pressure is 200 kpa;(5)The research of different length drainage pine poles treatment effect of soft soil foundation,the largest consolidation pressure is 200 kpa;(6)Analysis of vertical drainage or radial drainage plays a leading role in the drainage pine wood processing soft soil foundation.Acording to the model test result: In the process of drainage pine poles processing soft soil foundation can effectively increase its drainage way,which achieve better consolidation effect.When the same diameter and length of different drainage pine poles does not put through soft soil foundation,which dealing with soft soil foundation with the increase of the length of its processing effect is better.The same diameter and length of different drainage pine poles does not put through soft soil foundation,which treatment effect is than better put through soft soil foundation.The result has the deviation of theoretical analysis.The author thinks that this is the stress mechanism is different.When the drainage pine poles put through soft soil foundation,the drainage pine piles don't stress,only the soil stress.At the same time,the drainage of pine piles offer an resistance.When the same length of drainage pine poles,the diameter 10 mm drainage pine poles processing effect is more obvious.When the same diameter and the same length drainage pine poles put through the foundation,the radial drainage plays a leading role in the process of drainage pine poles processing soft soil foundation.