A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of nearby ground structures on the seismic response of underground structures in saturated sand
https://orcid.org/0000-0002-1607-9783
Abstract With the development of urbanization, underground structures unavoidably come within the vicinity of ground surface structures, and interaction between ground structure, soil, and underground structure interaction can significantly affect the seismic response of underground structures. Three-dimensional high-fidelity numerical dynamic analysis is conducted to investigate underground structures' seismic response in saturated sand with and without a ground structure. In the numerical analysis, saturated sand is simulated using a plasticity constitutive model for large post-liquefaction deformation of sand. The numerical analysis method is first validated based on a centrifuge shaking table test for a ground structure-underground structure system in liquefiable sand, and then applied to reveal the influence of ground structures on nearby underground structure seismic behavior. Results show that nearby ground structures significantly affect the underground structure's seismic response in saturated sand. A ground structure directly above an underground structure can amplify the underground structure's dynamic internal forces and restrict its uplift, whereas a ground structure to the side can amplify the underground structure's deformation and cause rotation. Factors including relative structure positions, ground structure characteristics, and ground motion properties influence the ground structure's effects on the underground structure's seismic response.
Highlights Ground structure-underground structure system seismic response in liquefiable soil. Plasticity model for liquefaction behavior of sand used in numerical analysis. Ground structure directly above amplifies underground structure's internal forces. Ground structure to the side amplifies underground structure's racking deformation. Ground structure restricts underground structure's uplift and may cause rotation.
Effect of nearby ground structures on the seismic response of underground structures in saturated sand
https://orcid.org/0000-0002-1607-9783
Abstract With the development of urbanization, underground structures unavoidably come within the vicinity of ground surface structures, and interaction between ground structure, soil, and underground structure interaction can significantly affect the seismic response of underground structures. Three-dimensional high-fidelity numerical dynamic analysis is conducted to investigate underground structures' seismic response in saturated sand with and without a ground structure. In the numerical analysis, saturated sand is simulated using a plasticity constitutive model for large post-liquefaction deformation of sand. The numerical analysis method is first validated based on a centrifuge shaking table test for a ground structure-underground structure system in liquefiable sand, and then applied to reveal the influence of ground structures on nearby underground structure seismic behavior. Results show that nearby ground structures significantly affect the underground structure's seismic response in saturated sand. A ground structure directly above an underground structure can amplify the underground structure's dynamic internal forces and restrict its uplift, whereas a ground structure to the side can amplify the underground structure's deformation and cause rotation. Factors including relative structure positions, ground structure characteristics, and ground motion properties influence the ground structure's effects on the underground structure's seismic response.
Highlights Ground structure-underground structure system seismic response in liquefiable soil. Plasticity model for liquefaction behavior of sand used in numerical analysis. Ground structure directly above amplifies underground structure's internal forces. Ground structure to the side amplifies underground structure's racking deformation. Ground structure restricts underground structure's uplift and may cause rotation.
Effect of nearby ground structures on the seismic response of underground structures in saturated sand
https://orcid.org/0000-0002-1607-9783
Abstract With the development of urbanization, underground structures unavoidably come within the vicinity of ground surface structures, and interaction between ground structure, soil, and underground structure interaction can significantly affect the seismic response of underground structures. Three-dimensional high-fidelity numerical dynamic analysis is conducted to investigate underground structures' seismic response in saturated sand with and without a ground structure. In the numerical analysis, saturated sand is simulated using a plasticity constitutive model for large post-liquefaction deformation of sand. The numerical analysis method is first validated based on a centrifuge shaking table test for a ground structure-underground structure system in liquefiable sand, and then applied to reveal the influence of ground structures on nearby underground structure seismic behavior. Results show that nearby ground structures significantly affect the underground structure's seismic response in saturated sand. A ground structure directly above an underground structure can amplify the underground structure's dynamic internal forces and restrict its uplift, whereas a ground structure to the side can amplify the underground structure's deformation and cause rotation. Factors including relative structure positions, ground structure characteristics, and ground motion properties influence the ground structure's effects on the underground structure's seismic response.
Highlights Ground structure-underground structure system seismic response in liquefiable soil. Plasticity model for liquefaction behavior of sand used in numerical analysis. Ground structure directly above amplifies underground structure's internal forces. Ground structure to the side amplifies underground structure's racking deformation. Ground structure restricts underground structure's uplift and may cause rotation.
Effect of nearby ground structures on the seismic response of underground structures in saturated sand
Zhu, Tong (author) / Wang, Rui (author) / Zhang, Jian-Min (author)
2021-04-03
Article (Journal)
Electronic Resource
English
Seismic behavior of irregular underground structures in saturated sand
| Elsevier | 2024
Seismic behavior of irregular underground structures in saturated sand
| Elsevier | 2024
Blast tests on underground structures in saturated sand
| British Library Conference Proceedings | 1998
Coupled Seismic Performance of Underground and On-Ground Structures
| British Library Conference Proceedings | 2022