• Title/Summary/Keyword: Deck plate

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Site Quality Evaluation Prototype for Building Deck-plate Construction

  • Shim, Young-Bo;Cho, Dong-Hyun;Koo, Kyo-Jin
    • Journal of the Korea Institute of Building Construction
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    • v.13 no.1
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    • pp.90-100
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    • 2013
  • Deck-plates are widely used on construction sites, and have the advantage of enabling contractors to achieve a relatively uniform quality. But nevertheless, quality deviation in deck-plate construction can occur as the result of differences in site conditions and the experience of crew workers. In this study, the authors present a site quality evaluation prototype for building deck-plate construction. Through analyses of case studies and interviews with experts, standard quality check sheets and a quality management index were developed by estimating the importance of quality check items based on a Failure Mode and Effects Analysis (FMEA) method. The applicability and effectiveness of the prototype was evaluated through a case study and interviews with case participants. It was found that the prototype promoted an active quality management as a way of continuously improving quality management in deck-plate construction instead of passive quality inspection practice.

An Experimental Study on the Vibration and Fire Resistance of Steel Void Deck Plate Slab for Omega-steel plate (오메가형 강판을 중공체로 사용한 데크플레이트 슬래브의 진동 및 내화에 관한 실험적 연구)

  • Kim, Sang-Seup;Ryu, Deog-Su
    • Journal of Korean Society of Steel Construction
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    • v.23 no.6
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    • pp.705-713
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    • 2011
  • This study was conducted to assess the vibration capacity and the fire resistance capacity of a deck plate slab using an omega steel plate as the void deck plate. First, to evaluate the vibration capacity of the deck plate slab after the insertion of the omega steel plate, three 150mm specimens and three 200mm specimens were made using the slab depth as the main variable. Each specimen consisted of an existing deck plate and two specimens, using the topping depth as the variable according to the slab depth. Second, two real-size specimens were made to evaluate the fire resistance capacity. The results of the test showed that the steel-wire-integrated deck plate slab that was inserted in the omega steel plate did not have a vibration problem due to the void deck plate, because the natural frequency was 12.66-14.09 Hz in the vibration test, and each specimen satisfied the appraisal standards for the load capacity, heat block quality, and chloride inhibition for two hours in the fire resistance test. Consequently, the steel-wire-integrated deck plate slab that was inserted in the omega steel plate can be reduced using the concrete volume and can have higher vibration and fire resistance capacities, similar to the existing deck plate.

An Experimantal Study on the Flexible Capacity of New Shape Flat Deck Plate(ACE-DECK) for Using Composite Slabs Systems. (신형상의 합성용 평데크플래이트(ACE-DECk)의 휨성능에 대한 실험적 연구)

  • Oh, Sang-Hoon;Jang, In-wha;Bae, Kyu-woong;Heo, Byung-wook;Yang, Myung-sook
    • Journal of Korean Society of Steel Construction
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    • v.13 no.3
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    • pp.265-277
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    • 2001
  • This paper present a study on the flexural behavior of composite slabs using the flat-type profiled(ACE-DECK) steel deck plate which are developed recently. Forty eight composite slabs with different thickness, span, shear span and deck profile were tested to evaluate the flexural capacity and compared to the existing traperzodial deck profiles (KEM, ALPHA-DECK) According to the experiment results, flat-type profiled steel deck plate indicates more excellent capacity than existing traperzodial deck profiles in strength, stiffness, and ductility. The equation proposed by ASCE code for the effective moment of inertia are more acceptable than the equation proposed by ACI code. Thus, in this paper, test results are summarized by strength, stiffness, and deformation capacity for the specimens.

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An Experimental Structural Performance of Steel Concrete Hybrid Deck for Bridge (교량용 강ㆍ콘크리트 합성 바닥판의 실험적 구조성능)

  • 정연주;정광회;구현본;김병석
    • Proceedings of the Korea Concrete Institute Conference
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    • 2003.05a
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    • pp.524-529
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    • 2003
  • This paper presents a experimental structural performance of steel-concrete hybrid bridge deck, which has studs to connect steel plate and concrete and T beam to improve structural performance, by steel plate shape, studs and load location. It proved that steel-concrete hybrid deck has a high structural performance and lightweight due to the efficient use of steel plate as a structural member, which has only used as formwork. In failure mode, few specimen failed at punching shear and many specimen at concrete crushing, therefore proved it has sufficient stability to punching shear which is the most frequent damage of bridge deck. Steel-concrete hybrid deck of plane steel plate has a high structural performance, and that of corrugated steel plate has a high reduction of weight.

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Sensitivity-based BWIM System Using Dynamic Strain Responses of Bridge Deck Plate (교량바닥판의 동적 변형률 응답을 이용한 민감도 기반 BWIM 시스템)

  • Kim, Byeong-Hwa;Park, Min-Seok;Yeo, Keum-Soo;Kim, Soo-Jin
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.20 no.7
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    • pp.620-628
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    • 2010
  • Using the responses of deck plate, a new bridge weigh-in-motion system has been introduced. The approach includes not only a systematic algorithm for the extraction of moment influence sequence but also a sensitivity-based system identification technique. The algorithm indentifies the influence sequence, the axle loads, and axle location of moving vehicles on a bridge, simultaneously. The accuracy and practicability of the algorithm have been examined experimentally for a folded deck plate on Yongjong Grand suspension bridge. It turns out that the two-dimensional effects of the behavior of deck plate should be considered for further accuracy improvement.

Structural Performance Evaluation on Flexural and Shear Capacity for Weight Reducing Steel Wire-Integrated Void Deck Plate Slab (자중저감 철선일체형 중공 데크플레이트 슬래브의 휨 및 전단내력에 대한 구조성능평가)

  • Kim, Sang-Seup;Ryu, Deog-Su;Boo, Yoon-Seob
    • Journal of Korean Society of Steel Construction
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    • v.24 no.4
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    • pp.411-422
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    • 2012
  • The purpose of this study is to evaluate the flexural and shear capacity of steel wire-integrated void deck plate slabs. In order to evaluate flexural and shear capacity, we make five 150mmspecimens and three 200mmspecimens by slab depth as main variable. Each series of specimen is comprised of an existing steel wire-integrated deck-plate slab and two specimens using topping depth as variable. From the series of experiments, steel wire-integrated void deck plate slabs has any decline in flexural and shear performance. Therefore, a void-deck-plate slab which inserts Omega-steel plate showed reducing a using concrete-volume and had flexural and shear capacity following existing steel wire-integrated deck-plate.

A Prediction of Out-of-Plane Deformation on a Deck Plate by Temperature Difference between Steel and Air (강판-대기 온도차에 의한 선체블록 주판의 부가 면외변형 추정)

  • Ha, Yun-Sok;Yi, Myung-Su
    • Journal of the Society of Naval Architects of Korea
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    • v.49 no.3
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    • pp.222-226
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    • 2012
  • When ship blocks are erected or pre-erected, most blocks will be at outdoors where they are not protected from weather and exposed to ray of the sun. A deck plate compared to those in radiation heat transfer from the sun will have higher temperature than it of ambient air, and will expand more than lower laying structures whose temperatures are similar with air. But deck plates and under-structures are connected, so the deck plate will be under out-of-plane deformation rather than expand in length. In this study, we considered the temperature difference between air and plate as a major parameter of out-of-plane deformation, and analyzed how much additional deformation would take place. In addition, when a deformation could take place was also analyzed based on the initial deformed shape of deck plate. Because the accuracy inspections of deck plate will be done during daytime, conventional accuracy check results on sunny day could make us feel unfair. Thus resonable datum about momentary additional out-of-plane deformation due to environmental effects have been determined. The real deformation values can be specified even under enlarged deformations by radiation-expansion.

Structural Performance of Super-Deck Plate Slab System with Truss Type Bar (트러스근을 사용한 슈퍼데크 플레이트의 구조성능평가)

  • Kim, Seong-Soo;Kim, Sang-Shik;Lee, Woo-Jin
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.7 no.2
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    • pp.193-199
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    • 2003
  • This paper presents the results of an experimental research project on 7 Super Deck Plates with continuous or simple beam types. The test parameters included the distance of truss, depth of deck plate and the type of beam. The test results are as follows ; When thickness of deck plate was increased, maximum strength was improved When the distance of truss bar was reduced from 20cm to 15cm, the mean value of maximum load was increased to 1.21 times. Continuous beam shown superior to simple beam, such as 5.03 times high strength, low deflection at yield point.

A Study on the Fabricated Concrete Deck Bridges (상판 조립식 교량 구조 개발에 관한 연구)

  • Goo, Min-Se;Chung, Ran;Kim, Gung-Hwan;Shin, Dong-Gi
    • Proceedings of the Korea Concrete Institute Conference
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    • 1992.04a
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    • pp.137-142
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    • 1992
  • The purpose of this study is to develop a new structural system for precast deck plate bridge. In order to investigate load distribution and composite effects by connecting diaphragms and precast deck plate to main girder with shear keys, computer analysis with F.E.M S/W package program ADINA was carried out. As results of analysis, the following could be concluded : -The distance between diaphragms with6m is suficient for crossing load distribution effects. -The composite effects by connection deck plate to main girder with shear key is reasonable. -The gap between deck plate and main girder under given load is negligible.

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Experimental and numerical study on pre-cambered deep deck-plate system

  • Seung-Ho, Choi;Inwook, Heo;Khaliunaa, Darkhanbat;Sung-Mo, Choi;Kang Su, Kim
    • Computers and Concrete
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    • v.30 no.6
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    • pp.445-453
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    • 2022
  • A pre-cambered deep deck-plate system has been developed that can realize a long span by offsetting the deflection caused by a construction load. In this study, finite element (FE) analysis is performed to examine the preload-camber relationship introduced into a deck and calculate the deflection reflecting the ponding effect that arises during concrete pouring. The FE analysis results showed that the stress of the bottom plate was half of the yield stress when the pre-camber of approximately 30 mm was introduced. Based on the FE results, a full-scale deep deck-plate is fabricated, a pre-camber is introduced, and concrete is poured to measure deflection. A deflection calculation formula that reflects the ponding effect is proposed, and the deflections yielded by the proposed model, experimental results, and FE results are compared. Results show that the proposed model can accurately estimate the deflection of non-supported deep deck-plate systems after concrete is poured.