Seismic response of irregular underground structures under adverse soil conditions using shaking table tests

Chen, Su; Tang, Baizan; Zhao, Kai; Li, Xiaojun; Hu, Zhuang

doi:10.1016/j.tust.2019.103145

Cited by 49 publications

(12 citation statements)

References 38 publications

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“…Other studies have focused on the analysis of structural internal force (Chen and Liu, 2018, Lei and Yong, 2020, Miao et al, 2020, Wang et al, 2021, Xu et al, 2020). Tang et al, (2020) conducted a shaking table test and found that the components of the bottom layer of a deep underground subway station construction, particularly the middle column, experienced cumulative damage, and other studies reported similar results (Chen et al, 2020, 2021, Miao et al, 2020). Seismic damage to underground structures in soft soil sites may be greater than that in liquefied sand sites (Chen et al, 2020).…”

Section: Introductionmentioning

confidence: 72%

Analysis of the seismic performance of a large underground station structure in complex stratum considering the influence of axial force

Bao,

Liu,

Shen

et al. 2023

Advances in Structural Engineering

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The large underground structure in saturated stratum is vulnerable to float during an earthquake. This results in a plethora of problems, such as uneven settlement, large internal force and structure damage. In this study, the seismic behavior of a three-story, two-span subway station in complex saturated stratum was investigated through water-soil fully coupled 3D finite element method. In the analysis, the nonlinear soil behavior was described by a cyclic mobility model and the structure was calculated using a nonlinear constitutive model which can consider the influence of axial force on its bending moment. Joints elements were used to model the contact surface between soil and structure. The development of the soil displacement and internal force of the station structure at different times during a huge earthquake was examined. The bearing capacity of the station structure members was analyzed. The results indicated that the vertical displacement was spatially distributed. The larger additional seismic stresses appeared in the bottom slab and side wall. Failed elements were observed in both the walls and slabs, and the walls were more easily damaged than the slab. The results provide useful reference for the large underground structure seismic design in the construction of urban underground space.

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Section: Introductionmentioning

confidence: 72%

Analysis of the seismic performance of a large underground station structure in complex stratum considering the influence of axial force

Bao,

Liu,

Shen

et al. 2023

Advances in Structural Engineering

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show abstract

“…The geometric similarity ratio is set as 1:40 based on the maximum load of the shaking table and the size of the soil container. According to the Buckingham theory [31,32] and scaling laws [33], length l, elastic modulus E, and equivalent density ρ were chosen as the basic physical quantities. The similarity ratio of elastic modulus S E is obtained by comparing the elastic modulus of the model building material and the prototype building material.…”

Section: Similitude Ratiomentioning

confidence: 99%

Comparative Study on Seismic Response of Pile Group Foundation in Coral Sand and Fujian Sand

Ding

Zhang

et al. 2020

JMSE

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The physical and mechanical properties of coral sand are quite different from those of common terrestrial sands due to the special marine biogenesis. Shaking table tests of three-story structures with nine-pile foundation in coral sand and Fujian sand were carried out in order to study the dynamic response characteristics of pile-soil-structure system in coral sand under earthquake. The influence of shaking intensity on the dynamic response of the system was taken into consideration. The results indicated that the peak value of the excess pore pressure ratio of coral sand was smaller than that of Fujian sand under two kinds of shaking intensities; moreover, the development speed of excess pore pressure ratio of coral sand was smaller than that of Fujian sand. The liquefaction of coral sand was more difficult than Fujian sand under the same relative density and similar grain-size distribution. The horizontal displacement, settlement, column bending moment, and pile bending moment of coral sand were smaller than those of Fujian sand, respectively. The magnification effect of column bending moment of buildings in coral sand was less than that in Fujian sand with increasing shaking intensity. This study can provide some supports for the seismic design of coral reef projects.

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“…By considering the characteristics of soil, excitation conditions of ground motions, contact conditions between underground structures and soil, and location of underground structures mainly based on numerical simulation and shaking table test, many scholars have made important contributions to this research [6][7][8][9][10][11][12][13][14][15][16][17][18]. Chen et al [19] studied the failure mechanism of a frame subway station structure in the loess area through a series of large-scale shaking table tests. e test results found that the soil-structure interaction was more significant in both horizontal and vertical directions when higher PGA was input.…”

Section: Introductionmentioning

confidence: 99%

Shaking Table Test on Seismic Response of Tunnel-Soil Surface Structure System considering Soil-Structure Interaction

Tian

Jin-hui

2022

Shock and Vibration

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With the increasing number of underground structures traversing the surface structure, the surface and underground structures interact with each other during earthquakes, thus affecting the seismic response of the interaction system. Based on this idea, the dynamic interaction system of a tunnel-soil-surface structure is designed. The seismic responses such as acceleration, strain, and interlayer displacement angle are analyzed, and the vibration characteristics and laws of the interaction system under different seismic loads are studied through the shaking table test. The results show that the type of seismic wave has a significant impact on the seismic response of the system, in which the dynamic response of the surface structure and soil is more sensitive to the seismic wave with rich low-frequency components. The acceleration response of soil near the tunnel-surface structure area is stronger than that of soil far away from the interaction area. During earthquakes, the maximum strain of the deep tunnel appears in the region of 45° between the two sides of the lining and the vertical symmetry axis, whereas the maximum strain of the shallow tunnel close to the surface structure is different from that of the deep tunnel. For the surface structure, with the input peak acceleration increasing, the weak layer of the surface structure moves down, and the interlayer displacement angle of the middle and lower layers is significantly larger. The research results have certain reference significance for exploring the seismic response law of a tunnel-soil-surface structure interaction system.

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Seismic response of irregular underground structures under adverse soil conditions using shaking table tests

Cited by 49 publications

References 38 publications

Analysis of the seismic performance of a large underground station structure in complex stratum considering the influence of axial force

Analysis of the seismic performance of a large underground station structure in complex stratum considering the influence of axial force

Comparative Study on Seismic Response of Pile Group Foundation in Coral Sand and Fujian Sand

Shaking Table Test on Seismic Response of Tunnel-Soil Surface Structure System considering Soil-Structure Interaction

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