Compound Carrier Compaction Pile Bearing Capacity Analysis And Construction Quality Control

Ram-compaction piles with composite bearing base is depend on reinforced concrete immersed tube perfusion bottom expanding,in the light of characteristic of soft foundation or loop fill foundation conducting filler,a new technology of foundation handling of enhancing bearing capacity by solied extrusion.It ha been extremely promoted and applied in many areas of our country,received huge social and economic achievements,but the theory study is limited.Based on the development history of ram-compaction piles with composite bearing base of in-depth understanding of thought This article has done further study of the history of ram-compaction piles with composite bearing base Ram-compaction piles load transfer mechanism and bearing capacity of the pile foundation and there are significant differences therefore cannot use prefabricated pile and cast-in-place pile and calculation theory to discuss and analyze the ram-compaction piles with composite bearing base. Based on the analysis of previous data and the test on the basis of the conclusion, through the numerical analysis method to study the mechanism of deformation of pile, load transfer, pile bearing capacity and its influence factors of pile, discusses the failure mode and place an order in different conditions of pile load deformation and stress condition, and combined with the engineering example analysis bearing capacity of piles on the importance of construction quality control.Because of field test detection means,conditions and data is limitied,this arcticle use FLAC3D numerical simulation soft to discuss pile soil interaction of ram-compaction piles with composite bearing base,reflected pile soil stress ratio,and bearing capacity and sorts of deformation factors. Considered separately calculated at different applied loads,pile settlement in different pile length,and curve P-S drawing, according to the inflection point to determine the ultimate bearing capacity of pile. Analysed on the pile length, diameter of pile bearing capacity of inferior influence factors and these factors on the pile bearing capacity and deformation rule. Provide the base for the design of ram-compaction piles with composite bearing base construction, deformation, quality control standard...