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http://dx.doi.org/10.14481/jkges.2015.16.8.5

A Applicability Study on Single Grouted Column Method (C-RJP Grouting) for Buoyancy-Resistant Permanent Anchor in Highly Permeable Volcanic Clastic Zones  

Jung, Yonggun (Department of Civil Engineering, The University of Suwon)
Chae, Youngsu (Department of Civil Engineering, The University of Suwon)
Park, Byunghee (Chung-Ah Engineering Consultants Co., Ltd.)
Kim, Jeongryeol (Samwoo Geo-Tech Co., Ltd.)
Publication Information
Journal of the Korean GEO-environmental Society / v.16, no.8, 2015 , pp. 5-12 More about this Journal
Abstract
In this study, buoyancy-resistance permanent anchor was considered to prevent uplift pressure of a building structure. However, this test was failed to put anchor body in the boring hole because of the rapid outflow of ground water and coefficient of permeability. In addition, the hole where the anchor body was forcefully inserted constantly flew the sea water and cement. And it was found that anchor was not settled in the ground. In order to solve this problem, jet grouting method was applied to block the ground water and the single grouted column method was chosen to install the buoyancy-resistance permanent anchor. In this paper, the single grouted column method was applied with the general jet grouting methods and grout material was fixed by 3-field tests. These tests confirmed the effect of permeability and ground improvement with field permeability test by core sampling, Standard Penetration Test (SPT) and unconfined compression test. Confirming the stability of the buoyancy-resistance permanent anchor with installation and tension test, application of the single grouted column method in the volcanic clastic zones was verified.
Keywords
Permeable; Volcanic clastic zones; Single grouted column method; Buoyancy-resistant permanent anchor;
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