Full Height Frame Integral Bridges Abutment-Backfill Interaction in Loose Granule Backfill

Alizadeh, Mehrdad; Khalim, Abdul; Chik, Zamri; Hosseiny, S. M. M. Mir

doi:10.3923/jas.2010.1588.1595

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…This condition will cause sliding over the wall and create an active earth pressure behind the abutment wall. Meanwhile, when the structure is elongated, the abutment will move toward the back soil, causing passive earth pressure (Alizadeh, et al, 2010). However, Burke (2009) has said that this effect is not significant for a short integral bridge of up to 300 feet.…”

Section: Design Basis and Methodologymentioning

confidence: 99%

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Behaviour of integral bridges under vertical and horizontal earthquake ground motion

Masrilayanti¹,

Weekes²

2014

Bridge Maintenance, Safety, Management and Life Extension

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Integral bridges are monolithic and are known to possess good earthquake resistance when founded on a stable soil. One important consideration is the relative displacements which can occur at the support points on structures where there is significant spacing between, i.e. bridges. Factors such as soil, foundation types etc. can all influence the dynamic response, and the stiffness of the bridge can influence how relative displacements affect the internal force actions within the structure. In this study, the effect of earthquakes on integral bridges built on several different soil types is examined, through computer simulation of an integral abutment bridge. The study is made based on Eurocode 8 recommendations, which provides data for different types of soil to be used for earthquake analysis. A symmetrical medium length integral bridge obtained from an existing structure is used for the analysis. Artificial EC8 spectrum compatible time histories (with a 0.35 g peak ground acceleration) are applied to the structure for a range of soil stiffnesses. In conjunction with this, both static and dynamic relative displacement studies are carried out to develop insight as to the significance or dominance of either dynamic or relative displacement effects.The final aim of this study is to propose a simplified approach for design/appraisal which can allow predictions of dynamic response based on the results of static relative displacement studies coupled with simple computer models, without having to resort to full nonlinear integration time-history analysis. Synthetic time histories for 5 different types of soil were created using Mathcad. The synthetic acceleration time history was validated using Seismospect (by Seismosoft). The time histories were then used to carry our full integration time history analyses in ANSYS (engineering simulation software) to simulate the dynamic response of the bridge.The results show that relative displacements play an important role in overall structural response of the integral bridge, compared to the pure dynamic response. The results also confirm that lower stiffness soils suffer a more detrimental effect of the earthquake compared to a soil of higher stiffness.

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Section: Design Basis and Methodologymentioning

confidence: 99%

“…Figure II-12: Abutment wall: active and passive states (Alizadeh, et al, 2010) Figure II-12 explains the process of fluctuations in the length of the bridge due to temperature changes. An increase in temperature drives the expansion and makes the back soil denser.…”

Section: Design Basis and Methodologymentioning

confidence: 99%

Behaviour of integral bridges under vertical and horizontal earthquake ground motion

Masrilayanti¹,

Weekes²

2014

Bridge Maintenance, Safety, Management and Life Extension

View full text Add to dashboard Cite

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Seismic Damage Assessment of Integral Abutment Bridge

Ahmed

Dasgupta

2020

Lecture Notes in Mechanical Engineering

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Fatigue Capacity Evaluation of the Girder-Abutment Connection for the Steel-Concrete Composite Rigid-Frame Bridge Integrated with PS Bar

Ahn¹,

Oh²,

Chung³

et al. 2012

Journal of the Korea Concrete Institute

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Integral and rigid frame bridges have advantages in bridge maintenance and structural efficiency by eliminating expansion joints and bridge supports. However, the detail of typical girder-abutment connection is rather complex and increases construction cost depending on construction detail. For the purpose of compensating disadvantages such as complexity and additional cost, a new type of bridge is proposed in this study, which improves the efficiency of construction by simplifying the construction detail of girder-abutment connection. The proposed bridge has the connection detail of steel girder and abutment integrated by prestressed PS bar installed in the connection. In this study, finite element analysis and fatigue load test are conducted to evaluate the fatigue capacity of the proposed girder-abutment connection. The results of the finite element analysis revealed that the possibility of the fatigue damage in the girder-abutment connection is very low. The results of the fatigue load test verified that the integrity of the girder and abutment connection is maintained after 2,000,000 cycles of fatigue loading.

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Full Height Frame Integral Bridges Abutment-Backfill Interaction in Loose Granule Backfill

Cited by 3 publications

References 3 publications

Behaviour of integral bridges under vertical and horizontal earthquake ground motion

Behaviour of integral bridges under vertical and horizontal earthquake ground motion

Seismic Damage Assessment of Integral Abutment Bridge

Fatigue Capacity Evaluation of the Girder-Abutment Connection for the Steel-Concrete Composite Rigid-Frame Bridge Integrated with PS Bar

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