Research On The Horizontal Load Of Rubberized Cement-soil Piles' Composite Foundation

Piles mainly bear the vertical load in the structure of common buildings. However, in some projects just like tall tower shape buildings and upper high buildings , piles also bear some other kinds of horizontal load like the power of the wind and the earthquake and so on. At present, the Rigid-Pile Composite Foundation has been applied into the industrial and civil buildings, and some areas have started to apply it in upper high buildings. But most current researches revolve around the working behaviour of the rigid-pile composite foundation in vertical load. And the transfer mechanism, stress ratio of pile and soil, reasonable cushions selected etc, in its vertical load have in-depth researches, but for the researches about the horizontal load from the load of the wind and earthquake , and the research is still at the primary stage.Rubber cement-soil pile composite foundation is a new treatment technology proposed on the basis of the researches of the cement-soil pile composite foundation, CFG pile and rubber concrete.Rubber cement-soil pile is a new pile formed after a series of physical reactions which mixed soft soil with rubber power, cement, curing agent, etc. A lot of experiments have proved that cement-soil admixture can improve the performance of the cement-soil. In this lab adding appropriate amount of rubber powder to cement-soil can make the cement-soil pile have good level of deformation capacity, freezing-thawing resisting capacity and high damping ratio, which increased the cement-soil pile 's ability of resisting harm ion erosion. With rubber composed of cement-soil pile composite foundation, rubber between soil pile of cement-soil pile restriction results in the lower of the compressive strength. Rubber powder play a role of the soft elastomer in cement-soil piles, which can alleviate various internal stress, improve the mechanical properties of cement-soil pile, reduce the occurrence and development of the internal original crack. Rubber cement-soil pile has large lateral deformation and it makes a full and reasonable use of the potential load of the pile soil to compact the soil between the pile. Meanwhile rubber cement-soil with high damping ratio can reduce the earthquake upward department structure, rise up with every passing.This article makes a detailed analysis and comprehensive summary of rubber cement-soil pile composite foundation composite foundation of single pile and group of pile body rubber powder mixed quantity and pile body horizontal displacement and pile body strain, pile body deflection and pile soil pressure relationship, vertical load and pile body horizontal displacement relationship cushions selected and pile body horizontal displacement of the relationship, replacement rate and pile body horizontal displacement and pile body strain relationship etc make detailed analysis and comprehensive summary, and rubber cement-soil pile composite foundation of pile soil common mechanism to make certain depth of planing out. Test results show that moderate rubber powder can enhance the lateral deformation of the pile capacity, the pile of strain and deflection value increases, horizontal load of composite foundation influence the increase of the depth and optimize the pile composite foundation of mutual mechanism, improve the bearing capacity of compound foundation level effectively. It also gives the rubber cement-soil pile composite foundation reasonable cushions selected single pile bearing capacity design value scope, level of pile composite foundation bearing capacity calculation formula, level of rubber cement-soil pile composite foundation by theoretical research successfully applied to practical projects providing a reference.