Numerical modeling of dynamic response and effect of near and far field earthquake of urban railway Station near to fault region (case study: line 2 urban railway Stations)

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Abbasnejad Alireza; Shahamat Abolfazl

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Journal: Year:2023 | Volume: | Issue: Page(s): 106-116

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Title

Numerical modeling of dynamic response and effect of near and far field earthquake of urban railway Station near to fault region (case study: line 2 urban railway Stations)

Author(s)

Abbasnejad Alireza | Shahamat Abolfazl | Issue Writer Certificate

Keywords

Line 2 Tabriz metroQ4

Underground metro stationQ4

Dynamic analysis of underground structuresQ4

Abaqus SoftwareQ4

finite element methodQ4

Near zone faultQ4

Abstract

For the first time in January 1991, the issue of studies and construction of urban trains was proposed by the esteemed representatives of the city of Tabriz in the Islamic Consultative Assembly. Due to the increasing growth of intercity travel in Tabriz and the need to use a 2-rail transportation system in order to reduce traffic problems, studies of Tabriz city train lines were conducted and Tabriz city train network including 4 routes, a total of 60km and 63 stations were designed. The analysis of underground structures is very complex due to the interaction with the surrounding environment in a dynamic state. For this reason, less research has been done. One of the first people who investigated the effect of earthquakes on underground structures is Newmark, in 1968 he presented an easy method to calculate the relative strains of underground pipe structures and long tunnels (Bozorgnia et al., 1995). In 1969, Kuesel established a simple method for calculating earthquake forces on linear tunnels, which in most cases is the basic of later works. Douglas and Warshaw in 1971 presented the results of tunnel design analysis under the influence of earthquakes. Lee and Trifunac in 1979 investigated the response of the lined tunnel under the shear wave effect. In 1981, Owen and Scholl's studied three types of deformations, including compressive-tensile, longitudinal bending, and rhomboidal and elliptical deformations as the result of seismic vibrations in underground structures.

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