Stress Distributions in Girder-Arch-Pier Connections of Long-Span Continuous Rigid Frame Arch Railway Bridges

Gou, Hongye; Hao, Long; Bao, Yi; Chen, Genda; Pu, Qianhui; Kang, Rui

doi:10.1061/(asce)be.1943-5592.0001250

Cited by 35 publications

(18 citation statements)

References 28 publications

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“…Numerous studies on the anchorage zones have been performed using the theory of elasticity, experiments, and finite element analyses. Manisekar and Gou et al [7,8] studied stress at ultimate in unbonded post tensioning tendons in simply supported concrete. Hassan et al [9] reported a simple function that can be used to assess post-tensioning cable forces in semi-cable stayed bridge under the action of the dead load.…”

Section: Introductionmentioning

confidence: 99%

Local Stress Behavior of Post-Tensioned Prestressed Anchorage Zones in Continuous Rigid Frame Arch Railway Bridge

Mao

Gou

et al. 2018

Applied Sciences

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The concrete stress behavior and cause of cracking at the anchorage zones of top and bottom slabs of a post-tensioned prestressed concrete box beam were studied. Based on the complex stress distribution under local anchor problem for the Yichang Yangtze River Bridge, which is the longest continuous rigid frame arch railway bridge in the world, model tests were conducted. Two full-scale specimens of top and bottom slabs were fabricated and gradually loaded based on principle of equivalent stress. The goal was to analyze the longitudinal and transverse stress distributions of cross sections of specimens at various loading cases during the experiment. From the experimental results, it can be concluded that the mechanical behavior of the concrete and steel bars were in good agreement when prestressed tendons were loaded. Tensile stress of concrete in prestressed anchorage zone gradually increased and surpassed the ultimate tensile strength of concrete with the increasing load. Consequently, local longitudinal cracking was formed at the anchorage block. Some recommendations to avoid the concrete at the anchorage zone continuing to crack are summarized in this paper.

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Section: Introductionmentioning

confidence: 99%

Local Stress Behavior of Post-Tensioned Prestressed Anchorage Zones in Continuous Rigid Frame Arch Railway Bridge

Mao

Gou

et al. 2018

Applied Sciences

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“…Gou et al [22] determined the local stress distributions of the V-shape pier-girder joint under different loading conditions. Additionally, according to the study accomplished by Gou et al [23] on the Yichang Yangtze River Bridge to investigate the stress distributions in the girder-arch-pier connections. A testing loading scheme depends on the Italian Code adopted by Martinelli et al [24] to investigate the bearing capacity of arch bridge in Lecco (northern Italy).…”

Section: Introductionmentioning

confidence: 99%

Behavior of Laminated Reinforced Concrete Curved Beam with Changing Concrete Properties

2019

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Strengthening and upgrading the performance reinforced concrete curved structures for functional purpose as well as for conversation of architectural aesthetic aspect is the main concern for engineers. In the present study, four full-scale experimental Curved Reinforced Concrete (CRC) beams conducted. The cross-section of all CRC beams was T-section. The parametric studies are carried out to investigate the effect of time of casting segmental layers (web and flange) and the compressive strength of concrete on the structural behavior of such structures. Three values of compressive strength of concrete used in this study, these are (25, 50, 75 MPa). The control specimen casting as one unit with the compressive strength of concrete was 25 MPa. The present outcomes showed that the increase in the compressive strength of concrete up to 75 MPa of the flange zone plays a significant role in raising the ultimate capacity by 22.86% and reducing the deflection by 61.43% in the quarter span as compared with control specimen. Additionally, the trend and distribution of cracks, mode of failure, and strain response of CRC specimens are briefly discussed in this study.

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“…Fu et al [17] performed a numerical solution for the dynamic response of a simply supported bridge with a switching crack subjected to seismic excitation and moving trains. Model test and in situ test have been considered as effective approaches to investigate the dynamic and mechanical performance of bridge structures [18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of a Long-Span Concrete-Filled Steel Tube Tied Arch Bridge and the Riding Comfort of Monorail Trains

et al. 2018

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In this study, a dynamic response analysis procedure is proposed and applied to investigate the dynamic responses of a straddle-type concrete-filled steel tube tied arch bridge under train and truck loadings. A numerical model of the coupled monorail train-bridge system is established to investigate the dynamic behaviors of the bridge under moving trains. A refined three-dimensional finite element model is built for the bridge and a 15 degrees-of-freedom vehicle model is presented for the train. The numerical model is validated using in-situ test results and then used to analyze the dynamic displacement and acceleration of the bridge and the trains on the bridge. Based on the simulation results, the impact factor of the bridge is investigated and the riding comfort of the trains is evaluated. The investigation results show that the impact factor of vehicle loads reaches the maximum value when the resonance of the bridge is induced by the moving vehicles. The effect of train braking predominates the longitudinal vibration of the bridge but is negligible in the transverse and vertical directions. The vehicle speed is the dominating factor for the riding comfort of the train.

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Stress Distributions in Girder-Arch-Pier Connections of Long-Span Continuous Rigid Frame Arch Railway Bridges

Cited by 35 publications

References 28 publications

Local Stress Behavior of Post-Tensioned Prestressed Anchorage Zones in Continuous Rigid Frame Arch Railway Bridge

Local Stress Behavior of Post-Tensioned Prestressed Anchorage Zones in Continuous Rigid Frame Arch Railway Bridge

Behavior of Laminated Reinforced Concrete Curved Beam with Changing Concrete Properties

Dynamic Response of a Long-Span Concrete-Filled Steel Tube Tied Arch Bridge and the Riding Comfort of Monorail Trains

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