A modified simplified analysis method to evaluate seismic responses of subway stations considering the inertial interaction effect of adjacent buildings

Qiu, Yan-Jia; Zhang, Hongru; Yu, Zhong-Yang; Zhang, Jingkun

doi:10.1016/j.soildyn.2021.106896

Cited by 8 publications

(3 citation statements)

References 28 publications

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“…Moreover, nearby structure has a significant effect on the floor response spectrum of base isolated building and superstructure (Cilsalar and Cadir, 2021;Bandyopadhyay et al, 2021). In addition to the study of SSSI effect on above-ground structures, the study on underground structures, such as subway stations (Miao et al, 2020; Latin American Journal of Solids and Structures, 2023, 20(2), e480 3/15 Zhu et al, 2021;Qiu et al, 2021), has also attracted attention. The advantages of the FEM include its simplicity to implement and flexibility in modelling complex problems.…”

Section: Introductionmentioning

confidence: 99%

Numerically study of SSSI effect on nuclear power plant on layered soil

Chen

Zhao

Zhang

et al. 2023

Lat. Am. j. solids struct.

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In typical dynamic soil-structure interaction (SSI) problems, the dynamic response a structure can be affected by the existence of some nearby structures, which is sometimes referred to as the dynamic structure-soilstructure interaction (SSSI). This effect is especially important in the earthquake engineering design of adjacent nuclear power plants, as the safety risk is relatively high. However, the current understanding on the SSSI of nuclear power plants is still insufficient. In this work, we use the finite element method to investigate the SSSI of two nuclear power plants located at a specific distance under earthquake excitation. Four nuclearpower-plant-soil systems are designed to account for the SSI and SSSI respectively, where the soil properties are obtained from drilling data. The effect of the SSSI on the nuclear power plants is studied by comparing the dynamic responses of four nuclear power plants-soil systems in vertical and horizontal directions, in which both layered soils and local weak interlayer soils are considered. The results of numerical study show that the presence of one nuclear power plant has a favorable effect on the seismic response of an adjacent nuclear power plant, such as reducing the displacement response, but this effect is limited. In addition, the SSSI effect is related to not only the soil properties, but also the direction of ground motion. Furthermore, the existence of soft soil layers complicates the SSSI effect. The results provide important insights for the construction and expansion of nuclear power plants.

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Section: Introductionmentioning

confidence: 99%

Numerically study of SSSI effect on nuclear power plant on layered soil

Chen

Zhao

Zhang

et al. 2023

Lat. Am. j. solids struct.

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“…The traditional response displacement method was improved by many scholars aiming at the limitation of it, such as the integral response displacement method [11], the inertial force-displacement method [12], the generalized response displacement method [13,14] and so on. Among them, Qiu [15] proposed the seismic design method of subway station structure in the vicinity of the existence of ground buildings, and the influence of the size of the numerical model on the accuracy of the simplified method was analyzed. The results showed that the influence of the size effect on the calculation results can be ignored when the distance between the model boundary and the structure exceeds four times the length of the structure.…”

Section: Introductionmentioning

confidence: 99%

Response Displacement Method for Seismic Calculation of Subway Station Complex Structure of TOD Mode

An,

Feng,

Zhang

et al. 2023

Buildings

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The TOD mode with rail transit stations as the center has become an important direction of future central city construction. However, at present, there is still a lack of simplified calculation methods for the seismic design of a subway station complex structure of TOD mode. Based on the load-structure model of the classic response displacement method and the seismic deformation characteristics of the underground complex structure, an improved response displacement method for seismic calculation of the subway station complex structure considering the influence of the upper frame structure was proposed in this paper. Then, based on the actual engineering case, the applicability of the improved reaction displacement method was verified through investigating the influencing factors such as seismic wave type, ground motion intensity, building position, structure form, structure stiffness, and stratum stiffness. Furthermore, a series of numerical simulation experiments were conducted to verify the simplified method and further evaluate its computational accuracy. The result shows that the error in calculating the internal force and deformation response of a station complex structure by using the improved reaction displacement method can be controlled at about 10%. The improved response deformation method is proved to be a highly practical pseudo-static method.

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“…e characteristics of earthquakes have notable in uences on the dynamic structural behavior of underground structures. Qiu et al [10] proposed a modi ed simpli ed analysis method to evaluate seismic responses of a large subway station in a complex area. Based on the presented model, the seismic response of the support structure was divided into two categories such as the kinematic interaction effect and the inertial interaction effect.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis on Seismic Responses of a Large Metro Station in Sandy Area

Liu

2022

Advances in Civil Engineering

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A new assessment method is proposed considering shortcomings of the current investigations for the assessment of underground structures considering seismic load. First, the dynamic elastic modulus and damping ratio of sand are studied based on the dynamic characteristic experiment of the soil. Subsequently, a series of design acceleration time history curves are obtained using the proposed methods. Finally, the seismic response of underground structures is evaluated by a three-dimensional numerical simulation. The results indicate that the dynamic elastic modulus of sand decreases with the increase of dynamic elastic strain and increases with the increase of confining pressure. The influence of confining pressure on the damping ratio of sand is slight, but it can still be seen that the damping ratio decreases with the increase of confining pressure, especially when the dynamic elastic strain is relatively low. The interlayer displacement between the top and middle plate is 2.1 mm and the interlayer displacement angle is 1/2650. The interlayer displacement between the middle and bottom plate is 1.7 mm and the interlayer displacement angle is 1/4117. Under the action of fortification earthquake, the interlayer displacement angles of Taiyuan Street station are less than 1/550, indicating that the structure meets the seismic requirements.

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A modified simplified analysis method to evaluate seismic responses of subway stations considering the inertial interaction effect of adjacent buildings

Cited by 8 publications

References 28 publications

Numerically study of SSSI effect on nuclear power plant on layered soil

Numerically study of SSSI effect on nuclear power plant on layered soil

Response Displacement Method for Seismic Calculation of Subway Station Complex Structure of TOD Mode

Numerical Analysis on Seismic Responses of a Large Metro Station in Sandy Area

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