Journal Published Online: 09 May 2018
Volume 41, Issue 4

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

CODEN: GTJODJ

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, South Korea
Im, Jong-Chul
Department of Civil Engineering, Pusan National University, Geumjeong-gu, Busan, South Korea
Kim, Changyoung
Department of Civil Engineering, Research Institute of Industrial Technology, Pusan National University, Geumjeong-gu, Busan, South Korea
Seo, Minsu
Department of Civil Engineering, Pusan National University, Geumjeong-gu, Busan, South Korea
Pages: 16
Price: $25.00
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Details
Stock #: GTJ20160241
ISSN: 0149-6115
DOI: 10.1520/GTJ20160241