Responses of Liquefiable Soils in Pile Group Foundations of Tall Buildings from Shaking Table Tests

Li, Peizhen; Yang, Jinping; Lu, Zheng

doi:10.3130/jaabe.15.311

Cited by 11 publications

(4 citation statements)

References 16 publications

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“…In addition to theoretical and numerical studies, some experiments and field tests have also been conducted . The Nuclear Power Engineering Corporation carried out forced vibration tests and shaking table tests using models of reactor buildings and adjacent structures from 1994 to 2002 .…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of a shaking table test on dynamic structure‐soil‐structure interaction under earthquake excitations

Liu

et al. 2017

Structural Design Tall Build

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Summary Structure‐soil‐structure interaction (SSSI) phenomena under earthquake excitations are investigated in this paper. Based on the results of the shaking table test, this work presents a 3‐dimensional finite element numerical simulation method using ANSYS software. In the simulation, an equivalent linear model is assumed for soil behavior, and contact elements are adopted to consider the nonlinearity state of the interface between foundation and surrounding soil. In addition, constrained equations are added to manage the uncoordinated degrees of freedom. By comparing the results of the finite element analysis with data obtained from the shaking table test, the dynamic response of the shaking table test can be simulated properly. Finally, the dynamic response of adjacent structures considering the SSSI effect is analyzed. The results show that with increased excitation, contact pressure, strain amplitude, and pile slip increase, whereas the peak acceleration magnification coefficient decreases. These results are significant for studying the effect of SSSI on seismic responses of structures.

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Section: Introductionmentioning

confidence: 99%

Numerical analysis of a shaking table test on dynamic structure‐soil‐structure interaction under earthquake excitations

Liu

et al. 2017

Structural Design Tall Build

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“…The silo modeling method was compared with shaking table tests to verify the rationality of the numerical analysis method 33 . It demonstrates that the modeling method can be used in the seismic analysis of grain silos.…”

Section: Numerical Simulation Of Silo Structure Considering Ssi Effectmentioning

confidence: 99%

Dynamic responses of reinforced concrete silo considering pile–soil‐structure–granular solid interaction

Yang,

Sun,

Gao

et al. 2024

Structural Design Tall Build

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SummaryThe columned‐supported reinforced concrete silo models with different filling conditions considering soil‐structure dynamic interaction (SSI) are established based on the finite element program ANSYS to thoroughly investigate the complex interaction mechanism of the soil–pile–silo structure with granular solid. The dynamic characteristics and seismic responses of the SSI system and fixed‐base condition are analyzed and compared when the filling conditions are empty‐filled state, half‐filled state and full‐filled state. The numerical results reveal that the SSI effect reduces the seismic acceleration response of columned‐supported silos effectively. However, in terms of displacement, the SSI effect often amplifies the relative deformation of the supporting column and the cylindrical silos. Furthermore, the SSI effect often increases the relative dynamic lateral pressure of the storage material in the half‐filled silo condition. In the full‐filled silo condition, the relative dynamic lateral pressure at the top and bottom of the storage material is increased by the SSI effect; while it is decreased in the middle part of the granular solid, demonstrating that the SSI effect could change and increase the seismic responses of the silo structure in certain areas. Therefore, the investigation provides a comprehensive insight into the interaction mechanism of the pile–soil–silo structure with different filling conditions.

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“…Different damping ratios can be loaded for different materials using this method in the ANSYS program. Li et al [32] used system identification techniques to obtain the response of soil under pile group foundation condition by shake table test results. The soil damping ratio is achieved through iteration from the D − γ d curves [33] based on material property test results [34].…”

Section: Damping Systemmentioning

confidence: 99%

Studies on Pounding Response Considering Structure-Soil-Structure Interaction under Seismic Loads

Liu

Lü

2017

Sustainability

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Pounding phenomena considering structure-soil-structure interaction (SSSI) under seismic loads are investigated in this paper. Based on a practical engineering project, this work presents a three-dimensional finite element numerical simulation method using ANSYS software. According to Chinese design code, the models of adjacent shear wall structures on Shanghai soft soil with the rigid foundation, box foundation and pile foundation are built respectively. In the simulation, the Davidenkov model of the soil skeleton curve is assumed for soil behavior, and the contact elements with Kelvin model are adopted to simulate pounding phenomena between adjacent structures. Finally, the dynamic responses of adjacent structures considering the pounding and SSSI effects are analyzed. The results show that pounding phenomena may occur, indicating that the seismic separation requirement for adjacent buildings of Chinese design code may not be enough to avoid pounding effect. Pounding and SSSI effects worsen the adjacent buildings' conditions because their acceleration and shear responses are amplified after pounding considering SSSI. These results are significant for studying the effect of pounding and SSSI phenomena on seismic responses of structures and national sustainable development, especially in earthquake prevention and disaster reduction.

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Responses of Liquefiable Soils in Pile Group Foundations of Tall Buildings from Shaking Table Tests

Cited by 11 publications

References 16 publications

Numerical analysis of a shaking table test on dynamic structure‐soil‐structure interaction under earthquake excitations

Numerical analysis of a shaking table test on dynamic structure‐soil‐structure interaction under earthquake excitations

Dynamic responses of reinforced concrete silo considering pile–soil‐structure–granular solid interaction

Studies on Pounding Response Considering Structure-Soil-Structure Interaction under Seismic Loads

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