Research on Collapse Process of Cable-Stayed Bridges under Strong Seismic Excitations

Wang, Xuewei; Zhu, Bing; Cui, Shengai

doi:10.1155/2017/7185281

Cited by 13 publications

(11 citation statements)

References 22 publications

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“…Tang et al [19] carried out a shake-table experiment to investigate the behavior of a reinforced-concrete low-cap-pile group embedded in this type of ground. There are many studies on the response of the platform under strong earthquakes [20,21]. The dynamic Shock and Vibration 5 …”

Section: Related Research On High Pile Cap and Low-pile Capmentioning

confidence: 99%

An Analysis of the Impact Exerted on Bearing Capacity of Pier and Pile after Increasing Pile Cap Height

Huang

Liu

Hou

et al. 2018

Shock and Vibration

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An analysis was carried out in this paper on the bearing capacity of pier pile and seismic performance rule when the low-pile cap is increased by 1 meter, 2 meters, and 3 meters. The bottom of the pile cap of pier no. 11 of Minjiang River bridge faces three "lows": 7.6 meters lower than island, 4.6 meters lower than natural river bed, and 6.5 meters lower than low water level. The numerical simulation method is adopted to input three seismic waves of Wolong, Bajiao, and EL to evaluate the bearing capacity of pier and pile under strong earthquakes. Using the standard formula and numerical simulation method, it is observed that the bending moment and axial force of bridge pier show an insignificant change under different seismic waves when the pile cap is increased by 0-3 meters. With peak ground acceleration increased to 0.35 g, the vertical bearing capacity and flexural capacity of pier and pile gratify the requirements; however, the pile foundation will be subject to compression and bending damage.

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Section: Related Research On High Pile Cap and Low-pile Capmentioning

confidence: 99%

An Analysis of the Impact Exerted on Bearing Capacity of Pier and Pile after Increasing Pile Cap Height

Huang

Liu

Hou

et al. 2018

Shock and Vibration

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“…The main reason for this is that (1) there are errors between the measured values and actual values [45,46]; and, (2) like most researchers, we assumed the consolidation form of the structure foundation in this paper, leading to a difference in the analysis result between the actual test model and numerical model and thereby a difference between the calculation result and the experimental result. However, this error is small enough to meet the requirements for precision in this study [47][48][49].…”

Section: Model Validationmentioning

confidence: 85%

Seismic Effectiveness of Multiple Seismic Measures on a Continuous Girder Bridge

Shi

Liu

2020

Applied Sciences

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Seismic hazards, such as bridge pounding, unseating, collapse, etc., cause significant economic losses and affect traffic and safety. Research on seismic measures, such as limiting and unseating prevention devices for the bridge, can effectively prevent damage to the bearings, such as excessive displacement, the pounding of the beam end, etc., in an earthquake. In this paper, the dynamic time-history analysis method was used to study the mechanical behaviors of the bridge structure, such as its seismic performance, structural displacement, pier bending moment, etc. We found that different combinations of seismic measures can effectively reduce the displacement at the bridge expansion joint and bearings. The joint application of an expansion device, restrainer, and unseating prevention devices shows the best limiting effect on bridge displacement and expansion joint displacement. The maximum reduction of bridge expansion joint displacement reaches 48% and is within the allowable deformation range of an expansion device in a large earthquake, and the maximum reduction of bearing displacement reaches 34%, which only slightly exceeds the shear deformation of the bearing. The expansion device, restrainer, and unseating prevention devices have smaller internal forces in this case than other cases, without damage. In contrast to the previous studies on single seismic measures of unseating restrainers, this study investigates the combination of multiple seismic measures and earthquakes of various magnitude. It reveals the catastrophe process of the bridge structure and the cooperation law of seismic measures in an earthquake.

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“…e 2016 Kumamoto Earthquake survey report published by the Asia-Pacific Economic Cooperation [14] and an overview of damage to roads and bridges in Nishihara area by Narazaki and Kong [15] presented the damage conditions of bridges during the 2016 Kumamoto Earthquake. ere was a research on the collapse process of cable-stayed bridges under strong seismic excitations by Wang et al [16]. According to all these research works, it is obvious that the seismic response analyses and seismic design specifications of bridges as well as damage survey of bridges are essential.…”

Section: Seismic Response Analysismentioning

confidence: 99%

An Investigation of Damage Mechanism Induced by Earthquake in a Plate Girder Bridge Based on Seismic Response Analysis: Case Study of Tawarayama Bridge under the 2016 Kumamoto Earthquake

Aye

Kasai

Shigeishi

2018

Advances in Civil Engineering

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This paper reports a damage survey and seismic analysis of a bridge. In the first part, the damage survey of some bridges that were affected by the 2016 Kumamoto Earthquake was discussed. Among these bridges, the Tawarayama Bridge, which is a plate girder bridge located very close to an active fault line, was particularly considered. This bridge incurred severe damage because of the earthquakes’ epicenters very close to the bridge. The damage mechanism that can occur in this type of bridge was elucidated. During the damage survey, parts of Tawarayama Bridge were examined to determine the damage in order to examine the factors of occurrence and damage mechanism. In the second part, the seismic responses of Tawarayama Bridge were analyzed using ABAQUS software, and beam elements were applied for the structural members. Firstly, the time-history responses were analyzed using both longitudinal and transverse direction earthquake ground motions separately and simultaneously to investigate the dynamic response of the bridge. Both undamped and damped conditions were considered. For the dynamic response analysis, the recorded earthquake acceleration data of Ozu Station were applied for both undamped and damped conditions considering both east-west (EW) and north-south (NS) directions simultaneously and the damped condition for these directions separately. In addition, a damped model was analyzed by applying design earthquake input data obtained from the Japanese Seismic Design Specifications for Highway Bridges. Consequently, five cases were established for seismic response analysis. Subsequently, the seismic responses of Tawarayama Bridge were investigated, and the behavior of the lower lateral members was examined considering the observed buckling of these members during the damage survey. The field survey and dynamic response analysis indicate that the buckling design of the lower lateral members should be considered in the future design of bridges.

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Research on Collapse Process of Cable-Stayed Bridges under Strong Seismic Excitations

Cited by 13 publications

References 22 publications

An Analysis of the Impact Exerted on Bearing Capacity of Pier and Pile after Increasing Pile Cap Height

An Analysis of the Impact Exerted on Bearing Capacity of Pier and Pile after Increasing Pile Cap Height

Seismic Effectiveness of Multiple Seismic Measures on a Continuous Girder Bridge

An Investigation of Damage Mechanism Induced by Earthquake in a Plate Girder Bridge Based on Seismic Response Analysis: Case Study of Tawarayama Bridge under the 2016 Kumamoto Earthquake

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