Fatigue capacity of a new connection system for a prestressed concrete hybrid truss web girder

Jung, Kwang Hoe; Yi, Jong Won; Lee, Sang Hyu; Ha, Ju Hyung; Kim, Jang-Ho Jay

doi:10.1680/macr.11.00109

Cited by 7 publications

(5 citation statements)

References 4 publications

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“…[4][5][6][7] 이러한 격점구조는 격점부 국부적인 거동뿐만 아니라 복 합트러스 거더의 휨 및 피로 등 전체적인 거동을 좌우하 기 때문에 이에 대한 연구가 계속 진행되고 있다. [8][9][10][11][12] 한편, 복합트러스 교량의 복부 개방구조는 프리스트레 스 박스교량에 비해 비틀림 성능을 저하시키는 단점을 가지고 있어 편심하중을 받는 교량이나 곡선교 등에는 아직까지 적용된 사례가 없다. 따라서 복합트러스교가 보다 널리 사용되기 위해서는 비틀림 거동에 대한 정확 한 분석이 필요한 상황이다.…”

Section: 서 론 1)unclassified

Analysis Evaluation of Torsional Behavior of Hybrid Truss Bridge according to Connection Systems

Choi¹,

Jung²,

Kim³

et al. 2014

Journal of the Korea Concrete Institute

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Hybrid Truss Bridge (HTB) uses steel truss webs instead of concrete webs in prestressed box girder bridges, which is becoming popular due to its structural benefits such as relatively light self-weight and good aesthetics appearance. Since the core technology of this bridge is the connection system between concrete slabs and steel truss members, several connection systems were proposed and experimentally evaluated. Also, the selected joint system was applied to the real bride design and construction. The research was performed on the connection system, since it can affect the global behavior of this bridge such as flexural and fatigue behaviors as well as the local behavior around the connection region. The evaluation study showed that HTB applied to a curved bridge or an eccentrically loaded bridge had a weak torsional capacity compared to an ordinary PSC box girder bridge due to the open cross-sectional characteristic of HTB. Therefore, three types of girders with different joint system between truss web member and concrete slab were tested for their torsional capacity. In this study, the three different types of HTB girders under torsional loading were simulated using FEM analysis to investigate the torsional behavior of HTB girders more in detail. The results are discussed in detail in the paper.

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Section: 서 론 1)unclassified

Analysis Evaluation of Torsional Behavior of Hybrid Truss Bridge according to Connection Systems

Choi¹,

Jung²,

Kim³

et al. 2014

Journal of the Korea Concrete Institute

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“…2(c)와 같이 거세트 판에 의해 불연속적인 플랜지 플레이트로 연결된 경우(GHT)에는 편심 모멘트에 대한 저항성능이 상대적으로 떨어져서 거더 전체의 극한 모멘트를 저하시 킬 수 있다. [8][9][10][11][12][13][14] 한편, 복합트러스 교량의 복부 개방구조는 프리스트레 스 박스교량에 비해 비틀림 성능을 저하시키는 단점을 가지고 있어 편심하중을 받는 교량이나 곡선교 등에는…”

Section: 서 론 1)unclassified

Torsional Behavior of Hybrid Truss Bridge according to Connection Systems

정광회¹,

이상휴²,

이종원³

et al. 2013

Journal of the Korea Concrete Institute

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HTB (hybrid truss bridge) steel truss webs instead of concrete webs in prestressed box girder bridges has been widely used in, because of its structural benefit such as relatively less self-weight and good aesthetics due to open web structure. Since the core technology of this bridge is the connection system between concrete slabs and steel truss members, several connection systems were proposed and experimentally evaluated. Also, the selected joint system was applied to the real bride design and construction. The researches were performed on the connection system, since it can affect the global behavior of this bridge such as flexural and fatigue behaviors as well as the local behavior around the connection region. The evaluation study showned that HTB applied to a curved bridge or a eccentric loading bridge, characteristic has a weak torsional capacity compared to an ordinary PSC box girder bridges due to the open structure of HTB. In this study, three box shaped hybrid truss specimens were made and the torsional test and evaluation for them were performed in order to find out the torsional behavior of HTB according to the connection system.

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“…The Arbois Bridge [1], which was built in France in 1985, was the first attempt of this type of bridge in the world. Additionally, more representative HTBs have been built in France, such as Boulonnais Viaducts [2] and Bras de la Plaine Bridge [3].…”

Section: Introductionmentioning

confidence: 99%

“…However, the mechanical behavior was affected by the form of welding [29]. To reduce welding during construction, Jung et al [1,11,13,20,22] proposed a new connection joint composed of connection plates and a connection bolt. Furthermore, experimental and numerical investigations were carried out on this new connection system and HTB girders to clarify the structural capacity, fatigue capacity and torsional behavior.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior and Failure Mode of Steel–Concrete Connection Joints in a Hybrid Truss Bridge: Experimental Investigation

Tan

Zhu

et al. 2020

Materials

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The core part of a hybrid truss bridge is the connection joint which combines the concrete chord and steel truss-web members. To study the mechanical behavior and failure mode of steel–concrete connection joints in a hybrid truss bridge, static model tests were carried out on two connection joints with the scale of 1:3 under the horizontal load which was provided by a loading jack mounted on the vertical reaction wall. The specimen design, experimental setup and testing procedure were introduced. In the experiment, the displacement, strain level, concrete crack and experimental phenomena were factually recorded. Compared with the previous study results, the experimental results in this study demonstrated that the connection joints had the excellent bearing capacity and deformability. The minimum ultimate load and displacement of the two connection joints were 5200 kN and 59.01 mm, respectively. Moreover, the connection joints exhibited multiple failure modes, including the fracture of gusset plates, the slippage of high-strength bolts, the local buckling of compressive splice plates, the fracture of tensile splice plates and concrete cracking. Additionally, the strain distribution of the steel–concrete connection joints followed certain rules. It is expected that the findings from this paper may provide a reference for the design and construction of steel–concrete connection joints in hybrid truss bridges.

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Fatigue capacity of a new connection system for a prestressed concrete hybrid truss web girder

Cited by 7 publications

References 4 publications

Analysis Evaluation of Torsional Behavior of Hybrid Truss Bridge according to Connection Systems

Analysis Evaluation of Torsional Behavior of Hybrid Truss Bridge according to Connection Systems

Torsional Behavior of Hybrid Truss Bridge according to Connection Systems

Mechanical Behavior and Failure Mode of Steel–Concrete Connection Joints in a Hybrid Truss Bridge: Experimental Investigation

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