최근 급속한 산업발전과 인구증가로 서해안과 남해안에서는 준설 매립을 통하여 가용할 수 있는 토지를 확보하고 있다. 그러나 이와 같은 준설 매립지역은 대부분 연약지반으로 연약한 지반조건과 어려운 시공 여건을 지니고 있다. 이러한 준설 매립지역에서 가장 큰 문제의 핵심이 되는 것이 장기간의 압밀침하이다. 포화된 연약지반은 투수계수가 작기 때문에 압밀침하 시간이 길어지게 되고 결국 연약지반에서의 건설공사 공기는 더욱 늘어나게 된다. 따라서 최근 연약지반에서의 공사 기간 중에 ...
최근 급속한 산업발전과 인구증가로 서해안과 남해안에서는 준설 매립을 통하여 가용할 수 있는 토지를 확보하고 있다. 그러나 이와 같은 준설 매립지역은 대부분 연약지반으로 연약한 지반조건과 어려운 시공 여건을 지니고 있다. 이러한 준설 매립지역에서 가장 큰 문제의 핵심이 되는 것이 장기간의 압밀침하이다. 포화된 연약지반은 투수계수가 작기 때문에 압밀침하 시간이 길어지게 되고 결국 연약지반에서의 건설공사 공기는 더욱 늘어나게 된다. 따라서 최근 연약지반에서의 공사 기간 중에 압밀에 의한 침하량을 빠르게 상당부분 일어날 수 있도록 하여 압밀시간을 단축시키는 압밀촉진공법이 적용되고 있다. 본 연구에서는 지반조사결과에 대한 분석을 수행하여 연약지반 대책공법 선정과 선행재하공법의 타당성을 평가하였다. 또한, 선정된 PBD공법에 대하여 복합 통수능실험을 수행하였고, 수치해석을 통한 타입간격과 타입장비에 따른 압밀도를 산정하였고, 장비주행성 확보를 위한 토목섬유매트와 샌드매트 보강을 분석하였다.
최근 급속한 산업발전과 인구증가로 서해안과 남해안에서는 준설 매립을 통하여 가용할 수 있는 토지를 확보하고 있다. 그러나 이와 같은 준설 매립지역은 대부분 연약지반으로 연약한 지반조건과 어려운 시공 여건을 지니고 있다. 이러한 준설 매립지역에서 가장 큰 문제의 핵심이 되는 것이 장기간의 압밀침하이다. 포화된 연약지반은 투수계수가 작기 때문에 압밀침하 시간이 길어지게 되고 결국 연약지반에서의 건설공사 공기는 더욱 늘어나게 된다. 따라서 최근 연약지반에서의 공사 기간 중에 압밀에 의한 침하량을 빠르게 상당부분 일어날 수 있도록 하여 압밀시간을 단축시키는 압밀촉진공법이 적용되고 있다. 본 연구에서는 지반조사결과에 대한 분석을 수행하여 연약지반 대책공법 선정과 선행재하공법의 타당성을 평가하였다. 또한, 선정된 PBD공법에 대하여 복합 통수능실험을 수행하였고, 수치해석을 통한 타입간격과 타입장비에 따른 압밀도를 산정하였고, 장비주행성 확보를 위한 토목섬유매트와 샌드매트 보강을 분석하였다.
Recently, the demand for industrial and residental land are increasing with economic growth, but it is difficult to obtain the area for development with good ground condition. For efficient and balanced development of land, new development projects are being carried out not only the areas with inlan...
Recently, the demand for industrial and residental land are increasing with economic growth, but it is difficult to obtain the area for development with good ground condition. For efficient and balanced development of land, new development projects are being carried out not only the areas with inland but those with the soft ground as well. In the development work of Incheon regional site, it will be greatly meaningful to analyze the calculation results having been carried out so far in every aspects and assess it reflecting the relevant design. It is work that examines closely correctly physical engineering properties of soft ground that one among portion that must handle most at this soft ground processing is used at design of soft ground. In this study, boring data and lab test data the performed before construction site and test results that is through confirmation test after soil improving that use PVD are analyzed. Various kinds of vertical drain technologies such as sand drain, sand compaction pile, packed drain, PVDs are commercially available to improve the soft ground. Therefore, Sand Drain is difficult to supply requirement sand and cause environment problem for ill advised extraction. And Paper Drain decrease drainage effect for a blazing reaction of water and has influence on the organism of under ground and the surface dryness. The prefabricated vertical drains (PVDs) are one of the most widely used techniques to accelerate the consolidation of soft clay and hence increase the shear strength of clay. Discharge capacity is the important factor of vertical drains and affected to the consolidation behaviors. As soft grounds have complex engineering properties and high variations such as ground subsidence especially when their strength is low and depth is deep, we need to accurately analyze the engineering properties of soft grounds and find general measures for stable and economic design and management. Vertical drain technology is widely used to accelerate the consolidation of soft clay deposits and dredged soil under pre-loading and various types of vertical drain are used with there discharge capacity. However, under field conditions, discharge capacity is changed with various reasons, such as soil condition, confinement pressure, long-term clogging, folding of vertical drains, and so on. The test results indicated that the discharge capacity decreases with the increasing the surcharge load, time, and hydraulic gradient. In conclusion, the discharge capacity and required discharge capacity are not much influenced by the type of PVDs. As a result, considering consolidation drainage characteristics in time-settlement, velocity of approaching 90% consolidation degree, and increasing rate of accumulation settlement, average water content and average strength, PBD is estimated to have good consolidation drainage characteristics.
Recently, the demand for industrial and residental land are increasing with economic growth, but it is difficult to obtain the area for development with good ground condition. For efficient and balanced development of land, new development projects are being carried out not only the areas with inland but those with the soft ground as well. In the development work of Incheon regional site, it will be greatly meaningful to analyze the calculation results having been carried out so far in every aspects and assess it reflecting the relevant design. It is work that examines closely correctly physical engineering properties of soft ground that one among portion that must handle most at this soft ground processing is used at design of soft ground. In this study, boring data and lab test data the performed before construction site and test results that is through confirmation test after soil improving that use PVD are analyzed. Various kinds of vertical drain technologies such as sand drain, sand compaction pile, packed drain, PVDs are commercially available to improve the soft ground. Therefore, Sand Drain is difficult to supply requirement sand and cause environment problem for ill advised extraction. And Paper Drain decrease drainage effect for a blazing reaction of water and has influence on the organism of under ground and the surface dryness. The prefabricated vertical drains (PVDs) are one of the most widely used techniques to accelerate the consolidation of soft clay and hence increase the shear strength of clay. Discharge capacity is the important factor of vertical drains and affected to the consolidation behaviors. As soft grounds have complex engineering properties and high variations such as ground subsidence especially when their strength is low and depth is deep, we need to accurately analyze the engineering properties of soft grounds and find general measures for stable and economic design and management. Vertical drain technology is widely used to accelerate the consolidation of soft clay deposits and dredged soil under pre-loading and various types of vertical drain are used with there discharge capacity. However, under field conditions, discharge capacity is changed with various reasons, such as soil condition, confinement pressure, long-term clogging, folding of vertical drains, and so on. The test results indicated that the discharge capacity decreases with the increasing the surcharge load, time, and hydraulic gradient. In conclusion, the discharge capacity and required discharge capacity are not much influenced by the type of PVDs. As a result, considering consolidation drainage characteristics in time-settlement, velocity of approaching 90% consolidation degree, and increasing rate of accumulation settlement, average water content and average strength, PBD is estimated to have good consolidation drainage characteristics.
AI-Helper
※ AI-Helper는 부적절한 답변을 할 수 있습니다.