• 보존과학회지
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• 제32권4호
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• pp.561-570
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• 2016

이 연구는 심곡사칠층석탑의 해체와 재조립에 3차원 영상분석 기법을 적용하여 원형에 가깝게 보수한 기술적 사례로써 의미가 있다. 석탑의 해체와 재조립 과정에서 전체적인 변형상태와 변위를 분석하였으며 구조적 안정성 검토를 통하여 재조립에 따른 변형을 최소화하였다. 또한 석탑의 원위치도 재검토하여 보수에 적용하였다. 재조립에 앞서 오염된 석재의 표면은 과학적 표면세정을 통해 이끼류와 지의류 등을 제거하였고, 석탑의 지반은 강회를 이용한 판축과 유사한 형식으로 다짐하여 보강하였다. 이 결과는 석탑의 해체와 재조립 과정에 중요한 자료로 활용될 수 있을 것이다.

• 건축역사연구
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• 제18권1호
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• pp.7-29
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• 2009

In understranding the essence of the Korea traditional Architecture, it is important to consider the jointing methods of architectural members, architectural technologies, etc. Especially the purpose of this study is understanding on the Jointing Method of Wooden Members in the period of Unified Silla Architecture. It's conclusion is summarized as follows. 1. A section of column has very close to do with the foundation stone. The structures of foundation stone and column are generally concluded by butt joint, arrow-head joint, housed joint by Grang-e method. Judu is structured by arrow-head joint And, in general, beam is structured by Sagaematchum Chumcha and sagaljudu of Don direction. At the head of Pyungju and the body of Goju, Changbang is structed by Jangbumachum with arrow-head joint or by jumukchang-machum. Also, it is surmised that Gyisoseum and Anssolim methods had been applied to columns from former ages. The example can be found at Bagjae Mireuksaji stone pagoda. Bagjae Mireuksaji stone pagoda taking wooden-pagoda form adopts Gyisoseum and Anssolim methods. We can also find such a sort of methods from other stone constructions like Budo, etc. 2. Injahwaban is structured by short Changbumachum with arrowed-head joint at upper members, and by Anjangmachum at the lower part. This sort of Gongpo style can be seen in the mural painting of tomb of Koguryo and in Buplyungsa, Buplyunsa, Bupkisa-located in Japan, which are influenced by Bakjae or Unified Silla. It is considered that at the end of the late United Silla, Injawhaban had been replaced with Chumcha and Soro on the Pyungbang under influence of Dapo style from China.

• 건축역사연구
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• 제30권6호
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• pp.7-22
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• 2021

This study was prepared to understand the changes in the stylobate and the characteristics of contrasting with the wooden pagoda of Hwangnyongsa Temple, which occupies an important position in ancient architecture. Literature data related to the wooden pagoda of Hwangnyongsa Temple, excavation data, and newly identified stylobate stone were examined.The reconstruction period of the wooden pagoda of Hwangnyongsa Temple, the size and form of the stylobate, the plan of the stylobate, the height plan, and the elevation plan were reviewed one after another.Since its foundation in 646, the wooden pagoda of Hwangnyongsa Temple has been rebuilt during the reign of King Gyeongmun in 873 and a stylobate has been rebuilt. Through the analysis of similar cases with the wooden pagoda's face stone members, the elevation of the stylobate was proved. It is estimated that the size and format of the wooden pagoda stylobate were similar to those of the reconstruction stylobate. It seems that the Sumijwa style stylobate was first introduced to the foundation of the wooden pagoda of Hwangnyongsa Temple. This is of great significance in that it provided a fundamental motif for the stylobate of architecture and stone architecture of the Unified Silla period.

• 한국지반신소재학회논문집
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• 제5권1호
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• pp.15-23
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• 2006

모래다짐말뚝 및 쇄석말뚝 공법의 경우, 연약지반의 보강, 극한지지력의 증대 및 기초지반의 압밀을 가속화시키기 위한 목적으로 지난 수십 년간 폭넓게 적용되고 있다. 쇄석말뚝공법은 비교적 강성이 크고 압축성이 작은 쇄석 등을 이용하여 다짐말뚝을 형성, 연약지반을 개량하는 공법이지만 횡방향 구속압력이 충분하게 발휘되지 않는 지반에서는 팽창파괴(bulging failure)에 대한 저항이 없어 적용이 불가능하게 된다. 따라서 본 연구에서는 쇄석말뚝의 활용도를 높이기 위해 팽창파괴 및 전단파괴 등을 방지하여 침하량을 상당부분 억제시킬 수 있는 고강도 지오그리드 보강 쇄석말뚝공법을 개발하였다. 본 공법 개발을 위해 삼축압축시험을 통하여 치환율 및 구속압력에 따른 일반적인 쇄석말뚝의 거동특성을 우선 살펴보았다. 아울러 유한요소 해석을 통한 3차원 수치해석을 시행하여 지오그리드의 종류 및 지오그리드 보강심도변화에 따른 지오그리드 보강 쇄석말뚝공법의 거동특성 및 침하저감효과를 평가함으로써 지오그리드 보강 쇄석말뚝의 적용성을 평가해 보았다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2006년도 추계학술대회 논문집
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• pp.1376-1379
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• 2006

Vibro crushed-stone compacted pile (VCCP) method is one of a ground improvement technique by a vibro compaction in vertical direction with crushed stone to build up stone pile foundation in other to ensure stability of soft ground. In spite of its long applied history in geotechnical engineering division, most of studies have not been based on the reliable In-situ condition but on the laboratory tests including model tests. These model tests can express standard and ideal behavior but exceptional status that can be occur in the ground cannot be considered efficiently. This study performed the the series of trial construction to investigate the effect of VCCP method on the improvement of soft ground expecially in railroad construction site.

• 통상정보연구
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• 제5권2호
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• pp.47-69
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• 2003

The computer was only used to calculate and solve the mathematical problems, to send the simple data, and to exchange the text based informations in the early 1990's. But nowadays, computer technology give us the chance to exchange digital goods and services, etc. And more, computer and computer based systems can be applied everywhere, for example, it can be used at office, at home, and at school. Most of all, one of the remarkable changes is the development of mobile industry, which can be applied anywhere and anytime. So, this study focused on the current situation and promotion plans of the mobile industry. Mobile is based on the IT, IT and mobile technology are the foundation stone of ubiquitous computing environments. Accordingly, this thesis analysis the meaning of ubiquitous, the meaning and roll of mobile industry. With the analysis of this, the conclusion is that to develop and success the new business model at home and overseas, the cooperation of government section and industry section is the most import thing to make it out.

• 보존과학연구
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• 통권19호
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• pp.159-177
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• 1998

Three-story Stone Pagoda(East) on Kamǔnsa temple constructed in A.D. 682 during the reign of King Shinmun-wang of the Unified Shilla period(668~935) was repaired by Cultural Properties Office in 1996. At that time, 27 objectsincluding sari case, small Buddha etc. were excavated. The 26 objects on foundation parts have been treated. Several objects were analyzed by EDXRF. As a result, the small Buddha of gilt bronze was proved to be an gold amalgam. The degree of gold purity was about 22K, and the excellence of gold-refining technique of that day was verified.

• 보존과학연구
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• 통권27호
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• pp.103-128
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• 2006

Rock properties of the five storied stone pagoda in the Mooryangsa temple are consist mainly in medium grained biotite granite with partly pegmatite veinlet. A part of the foundation stone is substituted in identical rock properties of the pagoda. The upper part of the pagoda is used purples and stone, gray shale and granodiorite. The most serious problem of the pagoda is structual instability from centered subsidence of the ground in northwestern direction remarkably. In southern view, the upper part of the pagoda also is slanted a little in right, it will need reinforcement by engineering method for structual stability of the stone pagoda. Weathering states of the stone pagoda are affected results of natural and artifical factors due to the surface-exfoliation, fine-fissure, crack, falling offs. On the rock surface of the pagoda, ferro-manganese hydroxide compounds are coated along the rainpathway. Also, bryophyte range concentration spreads raindrops face of roof rock properties, which areadd biological weathering effects. For the synthetic evaluation of the deterioration state, we make detailed surface weathering maps, it will be contribute to investigation for future conservation schemes.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2008년도 추계 학술발표회
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• pp.1415-1426
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• 2008

Stone columns, locally called "GCP (granular compaction pile)" can be used to improve strength and resistance against lateral movement of a foundation soil like rigid piles and piers. Also installation of such a discrete column facilitates drainage, and densifies and reinforces the soil in the sense of ground improvement. The integrity of the GCP has been indirectly controlled with the records of each batch including depth and the quantity of stone filled. An integrity testing was attempted using crosshole S-wave logging. The method is conceptionally same as the crosshole sonic logging (CSL) for drilled piers. The only and critical difference is that S-wave should be used in the logging, because P-wave velocity of the stone column is less than that of ground water. The crosshole sonic logger does not have the capability to measure S-wave propagating through the skeleton of crushed stone. An electro-mechanical source, which can generate either P- or SH-waves, and a 1-D geophone were used to measure SH-waves. Two 76mm diameter cased boreholes were installed 1 meter apart across the nominal 700mm diameter stone column. At every 10cm of depth, shear wave was measured across the stone column. One more borehole was also installed 1 meter outward from the one of the above boreholes to measure the shear wave profile of the surrounding soil. The diametric variation of the stone column with respect to depth was evaluated from the shear wave arrival times across the stone column, and shear wave velocities of crushed stone and surrounding soil. The volume calculated with these variational diameters is very close to the actual quantity of the stone filled.

• 한국지구물리탐사학회:학술대회논문집
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• 한국지구물리탐사학회 2004년도 정기총회 및 제6최 특별 심포지움
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• pp.180-189
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• 2004

(반)월성은 세계문화유산으로 등록된 '경주역사유적지구'에 위치한 왕성으로 특유한 반달모양을 하고 있어 유래된 이름이다. 우리의 신라 천년왕조의 역사를 가진 자랑스러운 월성은 오랜 역사만큼이나 그 신비함이 아직까지 간직되어 오고 있다. 따라서 월성의 신비를 그대로 보존하면서 고고학적인 호기심을 충족시킬 수 있도록 GPR(Ground Penetrating Radar)탐사 조사법을 적용하여, 향후 발굴계획이나 고고학적 연구에 과학적이고 체계적인 접근과 현대고고학과 지구물리학의 접목의 전기를 마련하고자 조사를 실시하였다. 탐사면적은 월성 전체면적의 $10\%$에 해당하는 $12,000m^2$로 석빙고 앞 및 그 주변을 탐사하였으며, 그 결과, $8{\times}8m^2$ 크기의 건물 7채와 담장 및 성의 출입시설, 수많은 초석들, 도로(추정), 그리고 직경 35m크기의 연못으로 추정되는 반응들이 확인되었다.