| Root piles was first used in ancient buildings in Europe based reinforcement,widely used in various types of civil engineering of the slope support, tunnelreinforcement. Mesh root piles by the small-diameter pile cross or tilted arrangement ofcomplex loads mainly to the vertical load bearing performance is better. In this paper,the theoretical analysis and numerical simulation based on the root piles traits on thenetwork structure.1.This article draw on flexible friction piles, the horizontal offset pile bearingcharacteristics, combined with related experience in engineering design formula underthe conditions of homogeneous loess roots Pile load transfer mechanism, and a singleoblique pile mesh of pile groups by forceanalyze the situation and function analyticalmethod for single pile effective pile length to derive computing.2.Using the ABAQUSfinite element software to establish a single pile under the different inclination of thepile-soil model to study the bearing capacity, displacement, the pile-soil stressdistribution aspects of the work traits. Analysts believe that the oblique pile under theaction of the body the Ministry of vertical load is easy to produce a bending stress is notconducive to the axial force transfer; compression of the pile cap soil can improve thepile stress distribution; under horizontal loads, root piles "oblique" arrangement bearingperformance.3.Compression mesh roots pile three-dimensional finite element model,using numerical simulation, the mesh group pile foundation pile-soil by the force ofdeformation, displacement field, stress field distribution was analyzed. That thepresence of mesh inclined piles in the pile group will slow down the pile group effect,and the load transfer to a wider range of soil; the same time, the compaction of soilbetween piles will be conducive to the inclined pile axial force transfer; rigid capTaiwan is easy to produce "frame the more the role is not conducive to the center vertical piles and pile soil bearing capacity to play.4.For the domestic root piles in thegap with foreign standards of construction and construction quality. This paper focuseson the research results of some typical root piles in the construction and constructionprocess, FAQs and construction after the completion of the construction of the pilequality low strain detection and erosion protection.In view of the subject of pre vertical micro pile more research, this paper will focuson structural changes from the root piles, load changes and quality control of the threeaspects of the study provide a theoretical basis and reference for the subsequentexperimental work. |
