You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    Volume 41, Issue 4 (July 2018)

    An Experimental Study for Reinforcing the Ground Underneath a Footing Using Micropiles

    (Received 21 September 2016; accepted 6 October 2017)

    Published Online: 09 May 2018

    CODEN: GTJODJ

      Format Pages Price  
    PDF (2.97 MB) 16 $25   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word



    Abstract

    The in situ application of micropiles has gradually increased in confined spaces of complex cities because the micropile has many advantages, such as low noise and vibration and compact machine size. Using the results of experimental analyses, this study purposes to improve the reinforcement efficiency of micropiles by recommending the most effective pattern and design method for installing them. In this study, model tests were carried out to understand the ground reinforcement effect induced by the mechanical interaction between the micropile and soil. The micropiles were installed in the soil underneath footings. Factors such as micropile diameter (D), micropile length (L), and number (n) of micropiles were considered as variables in the model tests. The positive effect of grouping micropiles and the confining effect of the ground increased the bearing capacity of a single micropile by about 2.27–2.60 times and 1.10–1.33 times, respectively.

    Author Information:

    Lee, Tae-Hyung
    Infrastructure Safety Division, Korea Infrastructure Safety Corporation, Goyang-si, Gyeonggi-do

    Im, Jong-Chul
    Department of Civil Engineering, Pusan National University, Geumjeong-gu, Busan

    Kim, Changyoung
    Department of Civil Engineering, Research Institute of Industrial Technology, Pusan National University, Geumjeong-gu, Busan

    Seo, Minsu
    Department of Civil Engineering, Pusan National University, Geumjeong-gu, Busan


    Stock #: GTJ20160241

    ISSN:0149-6115

    DOI: 10.1520/GTJ20160241

    Author
    Title An Experimental Study for Reinforcing the Ground Underneath a Footing Using Micropiles
    Symposium ,
    Committee D18