Abstract ▼ AI-Helper

70% of the land in South Korea consists of mountain district, so there is a need to develop areas that are not suitable for the construction like areas near rivers and along the shoreline in order to satisfy the demand for construction of industrial facilities and other structure. In the case of Kor...

70% of the land in South Korea consists of mountain district, so there is a need to develop areas that are not suitable for the construction like areas near rivers and along the shoreline in order to satisfy the demand for construction of industrial facilities and other structure. In the case of Korea, the number of reclaimed areas has increase using reclamation with drains since the 1960s. Nowadays, reclamation along the shore has increased rapidly to accommodate the construct of new harbors, airports, cities, and industrial complexes. Especially, in large construction projects on soft ground on south-western shoreline and areas near rivers. In Korean construction fields, good earth and sands such as broken stones and Mt.’s soils are used in construction because it has high water permeability and low compressibility.
However, nowadays, construction using this method is not possible due to the unavailability of construction material. Due to increasing demand for this type of construction researches has to find and develop a substitute must be performed. As an alternative, the sea bottom is dredged and the dredged material is used as the fill material in the reclamation area. Since the area has zero bearing capacity construction on this area is not possible since the soil can not support the weight of the construction equipment. Thus, many methods to reinforce the outer layer of the reclaimed land are developed.

The purpose of this study is to determine the most efficient surface stabilization method among the various surface soil stabilization methods applied in the reclaimation area of PUSAN NEWPORT.

The results obtained from this study are as follows :

① Based on the value of the original ground strength, efficient surface stabilization methods were proposed for the following condition

if the undrained shear strength is under 0.1tf/m2, the application of BAMBOO MAT method is most applicable while PET MET method is most applicable when the undrained shear strength is greater than 0.1tf/m2.

② Maximum allowable bearing capacity was obtained by applying three sheets of PET MAT.
Comparing the strength increase of the original ground, it was determined that the maximum strength increase was obtained for the BAMBOO MAT reinforced ground.

③ The coefficient of subgrade reaction for this area is 2.6~4.26kgf/cm3.
Both the strength of ground improved with surface stabilization and the strength of reclaimed ground were affected.

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