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홍석우,김형공 한국지반공학회 2014 한국지반공학회논문집 Vol.30 No.2
Depending on the underground load support mechanism, anchors are classified as friction anchors, bearing plate anchorsand the recently developed combined friction-bearing plate anchors which combine the characteristics of both the frictionand bearing plate type anchors. Even though numerous studies have been performed on bearing plate anchors, therewere only few studies performed to observe the failure surface of bearing plate anchors. Furthermore most of the soilmaterials used on these tests were not real sand but carbon rods. In this study, sand was placed in the soil tank andlaboratory tests were performed with bearing plate anchors installed with an embedment depth (H/h) ranging from 1~6. The variation in the pullout capacity and the behaviour of soil with the embedment depth (H/h) were observed. Grounddeformation analysis program was also used to analyze soil displacement, zero extension direction, maximum shear straincontours. It was determined from the analysis of the results that at ultimate pullout resistance the deformation was 5mm and the failure surface occurred in a narrower area when compared with results of the previous researches. It wasalso observed that the width of the fracture surface gradually becomes wider and expands up to the surface as thedeformation increases from 10 mm to 15 mm.