• 한국구조물진단유지관리공학회 논문집
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• 제1권1호
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• pp.75-87
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• 1997

To study the behavior a deck when it was collide with the ship approaching to the deck to berth, it was analyzed the effect zone by the ship collision which consists of deck slab and PC piles of the quay. The numerical technique is used to simulate the behavior of the deck when the ship hit the expansion joint of deck between the deck slabs. The failure behavior and zone of the deck are determinated by the comprehensive numerical study. The impact energy by the ship is also evaluated. It is concluded that these numerical analysis gave a reasonable estimation of the remedial area of the deck damaged by ship collision.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2007년도 정기 학술대회 논문집
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• pp.393-398
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• 2007

Fatigue Behavior of a GFRP bridge deck consisting of rectangular unit modules is studied by an experimental method. The experiment focuses on how the damage in the transverse direction influence the overall behavior of the deck It is proposed filling the space in each module with a soft foam. Using the recent experimental data, the fatigue behavior is discussed. If the space of the deck is filled with the foam, the fatigue life of the deck was increased about 1,000 times for the same level of the stress variation as the reference deck not filled.

• Smart Structures and Systems
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• 제17권4호
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• pp.559-576
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• 2016

This study is intended to propose a precast bridge deck system, which has ribbed loop joints between the decks and lacks internal tendons to improve the workability of existing precast deck system. A composite bridge deck specimen was fabricated using the proposed precast deck system, and static and fatigue load tests were conducted to evaluate the structural behavior and the crack pattern of the deck. Leakage test of the deck joints was also conducted and finite element analysis was carried out to compare with the test results.

• 한국도로학회논문집
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• 제15권1호
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• pp.103-110
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• 2013

PURPOSES: The objective of this study is to analyze and evaluate the behavior of orthotropic steel bridge deck pavement using three-dimensional finite element analysis and full-scale wheel load testing. METHODS: Since the layer thickness and material properties used in the bridge deck pavement are different from its condition, it is very difficult to measure and access the behavior of bridge deck pavement in the field. To solve this problem, the full-scale wheel load testing was conducted on the PSMA/Mastic bridge deck pavement and the deflection of bridge deck and horizontal tensile strain on top of pavement were measured under the loading condition. Three-dimensional finite element analysis was conducted to predict the behavior of bridge deck pavement and the predicted deflection and tensile strain values are compared with measured values from the wheel loading testing. RESULTS: Test results showed that the predicted deflections are 10% lower than measured ones and the error between predicted and measured horizontal tensile strain values is less than 2% in the critical location. CONCLUSIONS: The fact indicates that the proposed the analysis is found to be accurate for estimating the behavior of bridge deck pavements.

• 한국철도학회:학술대회논문집
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• 한국철도학회 1998년도 창립기념 춘계학술대회 논문집
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• pp.564-571
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• 1998

The function of diaphragms at abutments and piers of prestressed concrete (PSC) box girder train bridge is to transfer forces from the superstructure onto bearings or column and to stiffen the superstructure cross-section against in-plane deformation. Due to large stress disturbance at diaphragm, the design for the diaphragm using conventional design method is relatively irrational than designs for other structual members. And, due to contribution to boundary condition of deck slab by the diaphragm, the behavior of deck slab near the diaphragm is different from behavior of the deck slab obtained from two dimensional analysis of the bridge, which is basis far the design of deck slab. In this paper, three dimensional behavior of deck slab near diaphragm of PSC box girder train bridge constructed by the precast span method are analyzed by using three dimensional finite element modeling. Then, strut-and-tie model is applied to design the diaphragm of PSC box girder train bridge. The modeling techniques in this paper can be applied effectively to examine the causes of cracks at deck slab near diaphragm and to design diaphragm rationally.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2006년도 정기 학술대회 논문집
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• pp.906-913
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• 2006

The failure mechanism of a hollow bridge deck which is made of glass fiber reinforced polymer(GFRP) is investigated using both experiments and analysis. While the load-displacement behavior of the deck in the transverse direction shows a strong nonlinearity even in its initial response with relatively small magnitude of loads. In order to imporve the structural behavior of the deck in the transverse direction, we suggested that the empty space of the bridge deck is filled with a foam and investigated experimentally the static behavior of the orthotropic bridge deck which is made from GFRP and polyurethane foam. It is found that although the elastic modulus of the foam compared to that of the GFRP is about the order of $10^{-3}$, the structural behaviors in the weak axis such as nominal strength, stiffness, etc. are greatly improved. Owing to the low mass density of the foam used in this study, the bridge deck is still light enough with the improved structural properties.

• 한국구조물진단유지관리공학회 논문집
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• 제12권3호
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• pp.167-174
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• 2008

본 연구는 최근 교량에 많이 이용되고 있는 프리캐스트 바닥판(LB-DECK) 패널과 후타설 현장콘크리트 슬래브의 합성거동 여부 및 내부에 매입된 하면 주철근의 합성 후 구조적 거동을 분석한 것이다. 이를 위하여 현장배근 주철근의 철근량 및 배근방법에 따라 LB-DECK 패널의 정적거동 실험을 하여 현장타설 콘크리트 패널(FCP)과 비교 분석하였으며, 반복하중에 대한 평가를 위하여 피로실험을 하였다. 실험 결과, LB-DECK 패널 주철근량의 50%를 LB-DECK 패널 내부에 추가 배근하였을 경우 가장 우수한 강성을 나타내었으며, LB-DECK 패널이 FCP에 비해 평균 52.1%의 강성 증가 효과가 있음을 알 수 있었다. 또한 LB-DECK 패널에 대한 피로 실험 결과 200만회 반복하중에서도 충분한 건전도를 유지함을 알 수 있었다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 가을 학술발표회 논문집
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• pp.202-205
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• 2003

The purpose of this experimental study is to understand the flexural Behavior of structural deck plate continuous slabs (power deck plate slabs). The main variables considered in this test are thickness of the slab and the deck plate. Five specimens that have length of 600cm and width of 60cm were manufactured. Test results indicated that the ultimate flexural strength of power deck plate slabs was conservative compared to ACI flexural provisions. But, suitable arrangement of bar of top reinforcement is needed for crack control.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2001년도 봄 학술발표회 논문집
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• pp.113-118
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• 2001

The two-girder composite bridge has the girder space of more than 5m, for special case, over than 15m. Therefor, the design and construction of this bridge system require new approaches. To ensure the structural safety, the deck depth should be increased. Therefore, the economically designed deck system is necessary for th two-girder bridge. This study is the first step to develop the deck system for two-girder bridges. In this study, a literatute survey is performed to develop a new deck system for two-girder type of bridges. By considering the characteristics of two-girder bridge system, a cast-in-place PSC deck is proposed for the two-girder bridges. To examine structural behavior and safety of the proposed PSC deck, three real scale partition deck(3m$\times$5m) are tested under the static loading. In the test, the failure mode and behavior of each specimen, and ultimate load carrying capacity of the two-girder-bridge deck are identified.

• 콘크리트학회논문집
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• 제29권4호
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• pp.371-378
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• 2017

본 연구에서는 철근콘크리트 아치 데크의 정적재하실험을 통해 휨 거동을 평가하였다. 휨 실험은 길이 2.5 m, 폭 1.2 m, 중심단면 두께 100 mm, 단부단면 두께 160 mm의 실제 크기 프리캐스트 철근콘크리트 아치 데크의 정적재하 실험을 실시하였다. 실험결과는 극한설계강도에 비하여 약 1.74배 높은 하중을 견디는 것으로 관찰되었다. 반면, 실험체에는 구간에 따라 각각 다른 거동이 관찰되었다. 이러한 거동은 아치 데크와 이를 지지하는 반력대 사이에 일체거동이 이뤄지지 않은 이유로 인한 것으로 판단되었다. 그러므로 추후 연구에서는 반력대를 제외한 아치 데크의 정적재하 실험을 통해 정밀한 거동을 확인해야 할 것으로 사료된다. 실험결과를 종합하여 보면, 철근콘크리트 아치 데크는 일반형태의 바닥판에 비하여 우수한 구조적 이점을 통해 설계기준보다 높은 구조성능을 나타내었다. 이를 통해, 향후에는 장지간 바닥판으로써의 활용이 가능할 것으로 사료된다.