• Title/Summary/Keyword: anchor

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Characteristics Study by Pullout Test of Compression(JR-2000) Anchor (선단압축형(JR-2000) 앵커의 인발시험에 관한 특성연구)

  • Oh, Myung-Ju;Park, Tae-Young;Ha, Wook-Jai;Kim, Moon-Gyu
    • Proceedings of the Korean Geotechical Society Conference
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    • 2005.03a
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    • pp.819-824
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    • 2005
  • Anchor system is widely used in construction works to support retaining structures. The compression anchor is characterized by excellent mechanism of pullout resistance, as well as less probability of progressive failure than a tension anchor. This paper presents the mechanical characteristics of a newly developed compression anchor(JR-2000). Field tests were performed to investigate characteristics of the pullout resistance of compression anchor.

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Numerical Simulation of Electro-Mechanical Impedance Response in Cable-Anchor Connection Interlace

  • Nguyen, Khac-Duy;Kim, Jeong-Tae
    • Journal of the Korean Society for Nondestructive Testing
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    • v.31 no.1
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    • pp.11-23
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    • 2011
  • In this study, a finite element(FE) analysis on electro-mechanical impedance response of cable-anchor connection interface under various anchor force is presented. In order to achieve the objective, the following approaches are implemented. Firstly, an interface washer coupled with piezoelectric(PZT) material is designed for monitoring cable-force loss. The interface washer is a small aluminum plate on which a PZT patch is surface-bonded. Cable-force loss could be monitored by installing the interface washer between the anchor plate and the anchorage of cable-anchor connection and examining the changes of impedance of the interface washer. Secondly, a FE model for cable-anchor connection is established to examine the effect of cable-force on impedance response of interface washer. Also, the effects of geometrical and material properties of the interface washer on impedance responses under various cable-forces are investigated. Finally, validation of the FE analysis is experimentally evaluated by a lab-scale cable-anchor connection.

An Analytical Study on Primary Anchor Unit for ALC Panel Curtain-wall (ALC 패널 커튼월용 부품 Primary Anchor의 해석적 연구)

  • Yoon, Myung-Ho;Ryu, Chang-Hyun
    • Journal of the Korean Society for Advanced Composite Structures
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    • v.2 no.1
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    • pp.8-14
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    • 2011
  • This study aims at grasping the structural performances of primary anchor assemblage through a nonlinear finite element analysis. Primary anchor unit may be used as one of the connection devices between ALC panel curtain-wall and RC slab or main frame of a building. From the analytical results structural characteristics such as yield strength, initial stiffness and maximum strength are obtained and fully discussed.

Pull-out Test of Pulse Powered Underreamed Anchors (펄스방전 확공형 앵커의 현장시험)

  • Kim, Nak-Kyung;Ju, Yonh-Sun;Kim, Sung-Kyu;Seo, Hyo-Kyun;Kim, Tae-Hun
    • Proceedings of the Korean Geotechical Society Conference
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    • 2008.10a
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    • pp.1014-1021
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    • 2008
  • Ground anchor should not be used in soft clay, because anchor resistance can not be guaranteed. However, there is a way to increase the capacity of anchors. The pulse powered anchor is an underreamed anchor by using high voltage electrokinetic pulse energy. In this paper, conceptual introduction of the pulse powered anchor was presented. Anchor pull-out tests were performed at the Geotechnical Experimentation Site at Sungkyunkwan University in Suwon, Korea. Data were analyzed in order to verify the performance of pulse powered anchors.

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A Method of SMART Anchor for a Weaked Ground Condition (연약지반용 스마트 앵커 공법)

  • Park, Dae-Woong;Jeong, Jong-Ki;Kim, Jeong-Ryeol
    • Proceedings of the Korean Geotechical Society Conference
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    • 2009.09a
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    • pp.1334-1337
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    • 2009
  • A SMART anchor is a kind of friction mount anchor, the load is diffused and applied to the various parts of the distributed bond length, having less impact on the grout strength, and being able to secure necessary anchoring force in relatively soft grounds. Smart anchor can have strong loads in soft and weak grounds as in rock beds.

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Delayed Lateral Row Anchor Failure in Suture Bridge Rotator Cuff Repair: A Report of 3 Cases

  • Jeong, Jae-Jung;Ji, Jong-Hun;Park, Seok-Jae
    • Clinics in Shoulder and Elbow
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    • v.21 no.4
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    • pp.246-251
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    • 2018
  • Compared to single row repair, use of lateral row anchors in suture bridge rotator cuff repair enhances repair strength and increases footprint contact area. If a lateral knotless anchor (push-in design) is inserted into osteoporotic bone, pull-out of the lateral row anchor can developed. However, failures of lateral row anchors have been reported at several months after surgery. In our cases, even though complete cuff healing occurred, delayed pull-out of the lateral row anchor in the suture bridge repair occurred. In comparison to a conventional medial anchor, further biomechanical evaluation of the pull-out force, design, and insertion angle of the lateral anchor is needed in future studies. We report three cases with delayed pull-out of lateral row anchor in suture bridge rotator cuff repair with a literature review.

A Study on Load Balancing Mechanism for Local Mobility Anchor in Proxy MIPv6 Environment (Proxy MIPv6 환경에서 Local Mobility Anchor의 부하 분배를 위한 기법 연구)

  • Lee, Joong-Hee;Lee, Jong-Hyouk;Chung, Tai-Myoung
    • Proceedings of the Korea Information Processing Society Conference
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    • 2008.05a
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    • pp.875-878
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    • 2008
  • Proxy MIPv6 환경에서 Local Mobility Anchor는 이동 단말에 대해 이동성을 제공하기 위한 등록과정과 데이터의 터널링을 제공한다. 다수의 Mobile Access Gateway에 위치하는 모든 이동 단말에 대해 서비스를 제공하여야 하기 때문에 Local Mobility Anchor는 병목현상을 일으킬 수 있으며 이것은 Local Mobility Anchor에 의해 관리되는 모든 이동 단말에 대해 전체적인 이동 서비스의 실패로 이어질 수 있다. 본 논문에서는 이러한 문제를 해결하기 위해 다수의 Local Mobility Anchor에 부하를 분배하며 특정한 Local Mobility Anchor에 부하가 집중될 경우 효과적으로 재분배하기 위한 기법을 소개한다. 본 논문에서 제안하는 기법을 통해 다수의 이동 단말에게 서비스를 제공하는 Proxy MIPv6 환경에서도 안정적이고 양질의 서비스를 제공하며 자원을 효율적으로 이용할 수 있을 것으로 기대된다.

Suture anchor selection

  • Lee, Gwang-Won
    • The Academic Congress of Korean Shoulder and Elbow Society
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    • 2005.11a
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    • pp.198-205
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    • 2005
  • 1. Many design features including suture type, anchor size and geometry, and anchor material, play a role in the overall strength of the anchor. In addition, technical considerations such as implant orientation, pattern, and location may affect the ultimate success of the repair. 2. Multiple fixation points provide a biomechanically sounder construct in Bankart repair. The size of the glenoid and its rim make anchor size a critical consideration in implant selection and implementation.

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The Study on the TV Female Anchor's Image according to the Make Up and Hair Style (메이크업과 헤어스타일 유형에 따른 TV 뉴스 여자 앵커의 인상형성에 관한 연구)

  • Oh, In-Young;Kim, In-Sook
    • Journal of the Korean Society of Clothing and Textiles
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    • v.30 no.11 s.158
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    • pp.1636-1647
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    • 2006
  • The purpose of this study was to provide data that can be used to suggest idealistic anchor's image to capture ratings for the news program and to suggest guide for casting and training anchors for the broadcasting stations by examining the idealistic looks and images of TV news anchors by asking the general viewers who watch TV, The research methods was questionnaire survey. The subjects were 839 male and female audiences in theire 20's and 40's who residing in Seoul and Gyeonggi area. The study results are as follows: 1) The factors that decide impression of a female anchor The factors that decide female anchor's impression were 'specialty factor, friendliness factor, elegance factor, dynamic factor, and attractiveness factor'. 2) The difference in formation of impression according to makeup and hair style of a female anchor In case of specialty and friendliness factors scored high when putting on natural makeup, dynamic factors scored high when putting on elegant makeup, and attractiveness factor when putting on natural and romantic makeup. All factor were high when a female anchor had short-cut style and straight hair 3) Formation of anchor's impression from makeup and hair style according to the perceiver's variables (gender and age) Male and female audiences both gave hish score for a female anchor's specialty such as 'confident and reliable' and friendliness such as 'warm and comfortable' when a female anchor puts on natural makeup. They gave high score for attractiveness factor such as' good impression and refined' when putting on romantic makeup and high score for dynamic factor such as 'positive and confident' when putting on elegant makeup. Both male and female audiences gave high score fur all except friendliness factor when a female anchor had short-cut style compared to bobbed hair and high score far specialty factor when a female anchor had straight hair. The audiences both in their 20's and 40's gave high score for specialty and friendliness when a female anchor put on natural makeup while the perceivers at their 20's gave high score for elegance and dynamic factor when a female anchor put on elegant makeup. The audiences both in their 20's and 40's gave high score for all factors when female anchor had short-cut hair.

A Study on Theoretical Consideration to the Holding Power and Holding Power Coefficient of War Ship Anchor (함정 묘의 파주력과 파주계수에 대한 이론적 고찰에 관한 연구)

  • Lim, Bong-Taek;Ko, Jae-Woo;Kim, Byoung-Suk
    • Journal of Navigation and Port Research
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    • v.39 no.1
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    • pp.1-6
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    • 2015
  • In this study, with the awareness of the limitations set in the currently operated calculations of holding power and the holding power coefficient of anchors of naval ships due to its simple application of a specific value, various factors that impact the holding power and its coefficient were verified based on existing data analysis of literature research and numerous experiment results from anchor manufacturers, research institutes and academic community in order to overcome the aforementioned limitations. In addition, holding power and holding power coefficient were compared and analyzed by the shape of anchors. As a result, we came to know that the holding power of AC-14 type anchor is stronger than that of ASS type anchor or U.S. Navy Standard type anchor which makes it possible to reduce the weight of the anchor and therefore ease the process of naval shipbuilding. Furthermore, we confirmed the fact that U.S. Navy Standard type anchor does not react sensitively to the weight change of the anchor. Lastly, we found out that Danforth type anchor's holding power coefficient is in inverse proportion to the weight. Moreover, instructions for managing anchor are arranged easily for your information. The results of this study is expected to provide anchor - operating naval crew with a reliable theoretical basis pertaining to an anchor's holding power and its coefficient and contribute much for the safety of their act of anchoring.