Research On The Bearing Behavior Of Bored Piles Under Vertical Loading

With the rapid development of the national economy, pile foundation as a basicform has been more and more widely used in engineering practice. Bored piles in the1940s, first in the United States come out. After World War II, with the development ofthe economy around the world, more and more high-rise, high-rise buildings and heavystructures are selected bored piles. Bored piles, compared with the traditional pile burieddeep, high capacity, a pile can withstand a certain degree of lateral loads without liftingso low rate of reinforcement in the construction process test whether the soil haschanges, and so a series of advantages, so widely used.In this paper, on the basis of existing research results, combined with the actualsingle pile pressure load test, the vertical loads single pile ultimate bearing behaviorresearch and analysis. First introduced the background to the study, the purpose andsignificance of the research, as well as bored pile vertical bearing capacity of the presentsituation and the impact of vertical bearing capacity factors. Secondly, the performanceof bored piles, bored pile load transfer and stress characteristics; discuss the single pileload transfer mechanism, and analyzes the impact of single pile load transfer traits playand pile end of pile side resistance factors play. The use of buried in the pile ofmeasurement components calculated pile friction, tip resistance and axial force variationwith depth, and play traits were analyzed. According to the Q-S for the two tests, S-lgt,the S-lgQ curve analysis of ultimate bearing capacity of single pile. Finally, the currentspecification test pile capacity, compared to the norms calculated bearing capacity of thebearing capacity and two tests, analysis of the causes of deviations. Finally, the solutionis calculated with an improved method of calculating results and test measured similarresults. After pile design, testing and in-depth study has very important significance.