Seismic analysis of soil-pile-bridge-train interaction for isolated monorail and railway bridges under coupled lateral-vertical ground motions

Shamsi, Mohammad; Zakerinejad, Mohammad; Vakili, Amir Hossein

doi:10.1016/j.engstruct.2021.113258

Cited by 17 publications

(7 citation statements)

References 58 publications

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“…The input excitations are applied to the lower boundary of the model as a shear wave of SV according to the common assumption in numerical simulations. 83,84 Figure 8 shows the design spectrum along with the 5% damped average elastic spectrum of accelerations for different records. It should be noted that as a simplification, the one-dimensional ground motion that has no varying spatial components is assumed for the bedrock excitation in this study.…”

Section: Seismic Motionsmentioning

confidence: 99%

“…The mentioned code suggests a minimum seismic time duration (D 5 ‐D 95 ) of 10 s. The dominant periods of records range from 0.16 to 0.44 s. Other specifications of records are provided in Table 4. The input excitations are applied to the lower boundary of the model as a shear wave of SV according to the common assumption in numerical simulations 83,84 . Figure 8 shows the design spectrum along with the 5% damped average elastic spectrum of accelerations for different records.…”

Section: Numerical Modeling Proceduresmentioning

confidence: 99%

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Slope topographic effects on the nonlinear seismic behavior of groups of similar buildings

Shamsi

Shabani

Zakerinejad³

et al. 2022

Earthq Engng Struct Dyn

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The occurrence of vibrational energy exchange between neighboring buildings via soil is a well-known issue today as structure-soil-structure interaction (SSSI) problems. Furthermore, the seismic performance of buildings near the slopes considering seismic topography-soil-structure interaction (TSSI) is entirely different from their performance on the flat grounds considering seismic soilstructure interaction (SSI). Therefore, this study evaluates the seismic response of three moments resistant frame steel buildings with 15, 10, and 5 stories using three dimensional numerical analysis as a new topography-structure-soilstructure interaction (TSSSI) problem. This issue has not been investigated in previous studies to the best of the authors' knowledge. In each case of TSSSI, two, three, and four buildings with similar dynamic properties were simulated simultaneously. The effects of foundation's rocking, numbers of buildings, and the 2D and 3D arrangements of buildings were investigated, and the results of TSSSI cases were compared with the corresponding SSSI cases. The inelastic behavior for both building components and soil was considered in the simulations. Analyzes are performed based on seven earthquake records from which the average value was taken as final results. Results show that it is essential to consider the TSSSI effect, and it can completely change the seismic performance of buildings near the slopes. Although the effects of TSSI and SSSI on the seismic responses of the low-rise similar structures are negligible relative to the SSI cases, the results show that the nonlinear TSSSI effects of adjacent buildings should be fully considered even for 5-story low-rise structures.

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Section: Seismic Motionsmentioning

confidence: 99%

Section: Numerical Modeling Proceduresmentioning

confidence: 99%

Slope topographic effects on the nonlinear seismic behavior of groups of similar buildings

Shamsi

Shabani

Zakerinejad³

et al. 2022

Earthq Engng Struct Dyn

Self Cite

View full text Add to dashboard Cite

show abstract

“…In this context, one way to represent the infrastructure is to describe it as a mass-spring-damper system, which consists of a well-known strategy to mathematically represent the structural behavior of LOP and the effects resulting from the application of dynamic loads on these assets. SSI models applied in bridge foundation elements usually employ independent linear springs (Wrinkler spring model) to SSI strategy [4]. Adopting a this approach to simulate the SSI effects presents advantages compared to the models with contact debonding elements [5,6], such as reduced number of attributes and lower computational cost.…”

Section: Introductionmentioning

confidence: 99%

“…Alternative approaches are being studied to simulate the SSI effects on bridge infrastructure. Shamsi, Zakerinejad and Vakili [4] proposed a dynamic analysis in railway bridges using SSI models. The numerical modeling strategy adopted consisted of modeling the soil as a three-dimensional finite element solid with linear interpolation and Hourglass control.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis of a Pedestrian Bridge using Monitoring and Computational Techniques

Gamino,

Hune,

Santos

et al. 2023

Preprint

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The soil-structure interaction represents an important parameter when analyzing the dynamic behavior of bridges, taking into account the integration between soil, foundation, and structure to ensure an adequate structural representation. In this paper, a computational modeling strategy using soil-structure interaction (SSI) methodology was applied to represent the dynamic behavior of a pedestrian bridge (LOP). The computational models were validated using monitoring results from an extensive structural health monitoring campaign. The bridge monitoring program was characterized using embedded sensors and cutting-edge technology for remote monitoring: ground-based radar interferometry and video motion amplification. The instrumentation results were compared to establish the capabilities and advantages of this novel remote monitoring technique. The experimental results obtained from free and forced vibrations in the asset served as a basis for validating the developed computational model and allowed evaluating the asset be-havior in service for different loading conditions. This paper emphasizes the SSI approach to represent the pedestrian bridge dynamic behavior more accurately, allowing computational models to represent the LOP structural responses over the course of its life-cycle.

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“…Scholars have also completed innovative research related to coupling loads. For example, Sham explained the seismic behavior of a new isolated monorail bridge [16]. Bucinskas introduced a vehicle simplified model, a wheel-rail nonlinear interaction model, a bridge structure finite element (FE) model, and a layered soil semi-analytical mode [17].…”

Section: Introductionmentioning

confidence: 99%

Research on the Dynamic Response of a Continuous Steel Box Girder Bridge Based on the ANSYS Platform

Wang

Jia

Zhao³

et al. 2022

Sustainability

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Under the action of various dynamic loads, bridges will experience large deflections and stress. When the situation is difficult, it will affect the regular use of the bridge and even cause it to collapse suddenly. This article generated a sample of road surface irregularities based on the Chinese national standard. An ANSYS model was used to create the vehicle–bridge coupling model. In order to meet the actual engineering calculations, an essential but valuable analytical approach is presented here. The node coupling method established the time-varying vehicle axle coupling system. The moving tire force was applied to the axle coupling system. The ANSYS parametric design language was adopted to realize the process of the vehicle approach and exit of the bridge. Combined with the actual data of dynamic and static load experiments, the model’s accuracy was verified. The influence of different vehicle driving speeds, road irregularities, vehicle driving position, and vehicle driving state are analyzed in this paper. The vehicle speed had no significant influence on the displacement time-history and the force of the middle wheel of the vehicle at a specific driving position. The pavement grade significantly influenced the bridge’s displacement time-history and acceleration spectrum.

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Seismic analysis of soil-pile-bridge-train interaction for isolated monorail and railway bridges under coupled lateral-vertical ground motions

Cited by 17 publications

References 58 publications

Slope topographic effects on the nonlinear seismic behavior of groups of similar buildings

Slope topographic effects on the nonlinear seismic behavior of groups of similar buildings

Dynamic Analysis of a Pedestrian Bridge using Monitoring and Computational Techniques

Research on the Dynamic Response of a Continuous Steel Box Girder Bridge Based on the ANSYS Platform

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