Study On The Experiment And The Load-bearing Characteristics Of Auger Bored Cast-with-pressure Concrete Piles

Auger bored Cast-with-pressure Concrete Piles bears special merits,like highvertical bearing capacity of a single pile,rapid construction speed and reliable pilequality and no vibration or slurry wall, significant economic and thus haveenvironmental friendly and industry modernization. However, Anhui has seldomfound its application in the area of the pile foundation work of construction,expressway, etc.Hence, the bearing capacity behavior, load transfer mechanism, the lateralfriction and end bearing capacity of Auger bored Cast-with-pressure Concrete Piles inAnhui is equivocal and wants further research.Based on analysis of the subsistent method including the elasticity theorymethod,load transfer method,shearing displacement formulation, etc, and an in-depthinvestigation of the calculation methods for bearing capacity and settlement of singlepile.And the research of vertical Load-bearing Characteristics of Auger boredCast-with-pressure Concrete Piles is conducted through theoretical and field testing.The main research and findings of this essay are as follows:The load-bearing characteristics of pile-foundations have been research emphasisin engineering circles, the main contents of which encompasses single pile bearingcapability characteristics (including the function characteristics of pile side frictionand end resistance),single pile load-settlement characteristics and the factors havingcertain influence upon the load-bearing characteristics of pile foundations.At first the compression and the shaft force of three test pile is obtained from thefull-scale static load test at construction yard, which is collected from stress ofreinforced buried in different sections of every test piles.Then analyze the loadtransfer mechanism and study the main effects of the pile side friction. The final stepis to research the distributional status of pile shaft axial force distribution and pileshaft resistance.All results could be used to optimize the subsequent design.