• Title/Summary/Keyword: basement

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Case Study of Braced Wall System with High-strength Steel Pipe Strut (고강도 강관파이프 스트러트 흙막이공법 사례연구)

  • Shin, Jae-Min;Park, Hyun-Young;Joo, Jin-Kyu;Shin, Yoonseok;Kim, Gwang-Hee
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2012.05a
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    • pp.19-20
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    • 2012
  • According to develop urban area, the depth and floor area of basement tend to become deeper and larger. Excavation work for basement floor work is very important because its cost take 20% of total construction cost. Therefore, many studies of developing retaining wall system have performed for feasibility and safety in deep excavation work. In this study, new supporting system used high-strength pipe for retaining wall is introduced to reduce the construction cost and improve the safety and constructability by analyzing case study.

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제주도 남사면지역의 지하지질구조와 지하수산출특성

  • 김창옥;윤정수;정차연
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2003.04a
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    • pp.255-258
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    • 2003
  • The purpose of this study is to understand characteristics of stream and spring water and subsurface geologic structure in Seogwipo area. This study area is surrounded by various smaller parasitic volcanic cinder cones, tuff cones, strangely shaped basalt and trachyte rocks, beautiful waterfalls. The geologic structure in study area is classified into the Upper layer(volcanic rocks), Middle layer(SGF), Lower layer(UF), and Basement layer. The groundwater in Seogwipo area is classified into the Upper layer groundwater, Middle layer groundwater, Lower layer groundwater and Basement layer groundwater on the basis of the hydrostratigraphy structure.

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Geologic Structure of Euiseong Sub-basin from Spectrally Correlated Geopotential Field Anomalies (포텐셜필드의 스텍트럼대비법을 이용한 의성소분지의 지구조 연구)

  • 김원균
    • Economic and Environmental Geology
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    • v.33 no.3
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    • pp.217-228
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    • 2000
  • We use spectral correlation method to analyze gravity and magnetic anomalies of Euiseong Sub-basin for distribution of rock facies and gelogic structures. The analysis reveals distinct polarity between gravity and magnetic anomaly correlation ; intermediate to mafic intrusives, extrusives, and the Tertiary basin shows positive gravity (+G) and positive magnetic (+M) correlation. Granitic gneiss and felsic volcanics negative gravity 9-G) and negative magnetic (-M) correlation. The Palgongsan granite, felsic to mafic extrusives and Mesozoic granites are characterized by -G and + M correlation. +G and -M correlations in the sedimentary formations are interpreted by uplift of pre-Cretaceous basement rocks . The + G and + M correlation characteristics in northeastern part of Euiseong Sub-basin including the Tertiary sedimentary basin result from the uplift of crustal materials. Major axes of spectrally correlated amomalies have mostly NW-SE or NE-SW directions. The former is due to the intrusives along strike-slip faults, and the latter which is observed in sedimentary formations is related to geological structures of basement associated new insight into the boundary between Euiseong and Milyang Sub-basin.

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Geologica Structure of the Euiseong Sub-basin by Anlaytic Aeromagentic Anomaly Data (항공자력의 Analytical 이상을 이용한 의송소분지의 지구조 연구)

  • 김원균
    • Economic and Environmental Geology
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    • v.33 no.3
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    • pp.229-237
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    • 2000
  • The structure of Euiseong Sub-basin and boundary of sub-basins were examined by analytical aeromagentci anomaly data. Magnetic lineaments have trends of NE-SW, NWW-SEE and NEE-SWW. The NE-SW lineaments in the sedimentary formations and pre-Cretaceous basement are assoicated with the direction of expansion of basin and the lineaments in the volcanic rocks and intrusives indicate the direction of structural weakness ones such as fault, which were major gateways of igneous activities. Euiseong Subbasin is bounded by pre-existing Andong Fault, pre-Cretaceous basement in the west, NE-SW lineament from Jyungsan to Angang, and NW-SE lineament connecting southwestern boundary of Palgongsan Granite and Jeokje Fault. In particular , the NW-SE lineament , which caused upheavel of pre-Cretaceous rocks, on Jeokje Fault is inferred as a boundary between Euiseong and Milyang Sub-basins.

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Standard Manual for the Diagnosis and Repairing Leakage Cracks of Underground Structures in Apartment Housing - Maintenance Inspection - (공동주택 지하구조물의 누수 균열 진단 및 보수방법 표준 매뉴얼 - 유지관리 점검 -)

  • Kim, Soo Yeon;Lee, Jung Hun;Lee, Sung Jin;Jang, Duk Bae;Oh, Sang Keun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.05a
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    • pp.343-344
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    • 2018
  • This study proposes a standard method of diagnosis and repair to prevent and maintain the problem of durability deterioration caused by leakage cracks in apartment basement structures in Korea. Following the announcement of the previous maintenance plan section, this is the second part of the study, focusing on inspection of methods for diagnosing and repairing leakage cracks in apartment basement structures. In this thesis, the matters required for the procedures, types, times and equipment of the inspection plan and the inspection methods, records, and decisions required for the actual inspection are described.

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A Study on the Integrated Seismic Reflection and Refraction for Shallow Marine Site Survey KSEG.KGS Joint Symposium (천해저 조사를 위한 탄성파 반사법 및 굴절법 통합연구)

  • Kim, Chan-Su;Lee, Sang-Chul;Shin, Sung-Ryul;Kim, Hyun-Do;Jo, Chul-Hyun
    • 한국지구물리탐사학회:학술대회논문집
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    • 2007.06a
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    • pp.349-352
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    • 2007
  • Estimating the physical properties of the survey area and mapping the geotechnical basement play an important role in ocean engineering and construction field. In this study, we performed marine seismic reflection and refraction survey as an engineering application at shallow marine. We made use of the dual boomer - single channel streamer as a source-receiver in reflection seismic survey and air-gun source - the manufactured OBC(Ocean Bottom Cable)-type streamer in refraction survey. In the seismic reflection data, we could easily find the geological layers and basement. Moreover, seismic refraction data could present sediment thickness and velocity distribution.

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Morphologic Changes of Anchoring Fibers in Vocal Polyps (성대용종에서 부착섬유의 형태학적 변화)

  • 정광윤;최종욱
    • Korean Journal of Bronchoesophagology
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    • v.1 no.1
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    • pp.64-68
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    • 1995
  • Vocal folds injury from vocal abuse is important topics of phonosurgery. Recent advances in diagnostic equipment, phonosurgery and speech analysis equipment have provided a lot of Information about fine movement of the vocal folds. However, predicting the reaction of the vocal folds to phonatory trauma remains difficult. The vocal folds need to withstand great vibratory and shearing stress and anchoring fibers of basement membrane Bone play a role in maintaining structural integrity of histologically different epidermis and superficial layer of lamina propria(cover of vocal folds). The purpose of this study is to demonstrate the changes of anchoring fibers in vocal polyp using transmission electron microscope. Various defects were observed : a irregular thickening of basement membrane, a near absence of normal anchoring fiber, a lot of electron dense material in superficial layer of lamina propria, a destruction of hemidesmosome and many vesicles carrying electron dense material In basal keratinocyte. These observations were suggestive of a hyperactivity of basal keratinocyte of vocal folds epithelium in response to vibratory stress.

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A Study on the Group Intervention for Family Violent Offenders (가정폭력 가해자를 위한 집단프로그램 개입에 관한 연구)

  • Kwon, Jin-Sook;Chun, Suk-Kyoun
    • Korean Journal of Social Welfare
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    • v.44
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    • pp.36-63
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    • 2001
  • The purposes of this study are to experiment a modified domestic conflict containment program (DCCP) which was initially development for developed by Dr, Neidig on 10 Korean offenders, and to provide practical basement for development of Korean offenders' group. This modified group program is based on cognitive-behavioral and communication theories. The group was leaded by 2 therapists, one female and one male, and continued 12 consecutive weeks, each week for 2 1/2 hours. The evaluation on the program is based on 4 different data: 1) intake form for spouse abuse, 2) group leader's summary on each session based on video taping and an analysis after each session with two probation officers in charge for the offenders, 3) clinical measurement for self esteem (ISE), 4) daily self report on each session and the final evaluation form by the group members. The result was shown consisently that this program achieved the purpose of this study across the all 4 data. Therefore, we suggest our experimental study will be able to provide a practical basement for future development of group treatment model for Korean offenders.

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Earthquake performance of FRP retrofitting of short columns around band-type windows

  • Kocak, Ali
    • Structural Engineering and Mechanics
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    • v.53 no.1
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    • pp.1-16
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    • 2015
  • Due to design codes and regulations and the variety of building plans in Turkey, it is very often seen that band-type windows are left for ventilation and lightening of the basements of buildings which are used for various purposes such as workplaces and storage. Therefore when the necessary support measures cannot be given, short columns are subjected to very high shear forces and so damage occurs. One of the precautions to avoid the damage of short column mechanisms in buildings where band-type windows are in the basement is to strengthen the short columns with fiber reinforced polymer (FRP). In this study, the effect of the FRP retrofitting process of the short columns around band-windowed structures, which are found especially in basement areas, is analyzed in accordance with Turkish Seismic Code 2007 (TSC 2007). Three different models which are bare frame, frame with short columns and retrofitted short columns with FRP, are created and analyzed according to TSC 2007 performance analysis methods to understand the effects of band windows in basements and the effect of FRP retrofitting.

Research on Noise and Vibration Analysis for a clean facility (크린시설동 소음 및 진동 해석)

  • Jeon, Yong-Han;Park, Ro-Gook;Lee, Deok-Soo
    • Journal of the Korea Safety Management & Science
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    • v.19 no.1
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    • pp.245-255
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    • 2017
  • This paper is a study to estimate the noise generated by fluid around each machine in the basement and basement facilities that accept major noise factor, pump fluid mechanical equipment installed to evaluate the impact on the real working environment. In particular, the review of the reliability of complementary information and reliability predict the natural frequency for generating a maximum strain when the vibration analysis, and intended to ensure that the design to avoid a natural frequency of the structure, on the basis of the this analysis result to the subject a real building.