Influence of Vertical Ground Motion on Seismic Response of Subway Station Co-structure System
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 9
Abstract
Objective The co-structure system of subway station (hereinafter referred to as 'co-structure system') realizes the connection and conversion between the box structure and the box frame structure through thick plates. Due to the unique structural form of the co-structural system, its seismic response law is currently unclear, further study on the characteristics of its seismic response is needed. Method Taking the co-structure system of a comprehensive utility tunnel and subway station as an example, the finite element simulation model of soil-co-structure system interaction is established. Considering one-way and two-way seismic waves (both horizontal and vertical) as inputs, three working conditions are selected. The acceleration response characteristics, displacement response characteristics, compressive and tensile damage situations, and the evolution process of the co-structure system under seismic action are analyzed. Taking the left column end of the co-structure system as an example, the internal force response characteristics of some structural parts are discussed. Result & Conclusion The vertical acceleration of the co-structure system is greatly affected by the bidirectional coupling ground motion. The maximum increase in acceleration at the joint between the side wall and the negative first floor slab reaches 158 % (compared with the vertical ground motion). Vertical ground motion may increase the relative horizontal and relative vertical displacements in the roof and floor of the co-structure system, and the internal force response of the column as well. Locations of the co-structure system such as the column ends, the lower part of the side wall, both ends of the bottom plate, the connection of the components, and the axillary angle are vulnerable to seismic damage, and should be strengthened accordingly.
Authors and Affiliations
Xiaoming MA, Han MIAO, Luzhen JIANG, Junhai AN
Keywords
Related Articles
- EP ID EP744333
- DOI 10.16037/j.1007-869x.2024.09.025
- Views 50
- Downloads 0
Key Technologies of Vehicle Base Station Design for Suspended Monorail Transit
[Objective] The overall plane layout of the suspended monorail transit vehicle base directly affects train′s operation and engineering cost. The turnout type selection has a great influence on the overall layout of the d...
Metro Train Braking Simulation Control System Based on EP2002 Braking System
[Objective] To address the issue of the highly integrated internal structure of the EP2002 valve system, which hinders internal fault injection, a metro train braking simulation control system that accurately reflects th...
Simulation Analysis of Passenger Evacuation and Rescue in Straddle Monorail Transit Intervals
Objective Due to the unique characteristics of straddle monorail transit system, evacuation and rescue forms on its elevated lines differ from conventional urban rail transit. Therefore, it is necessary to conduct an in-...
Research on the Application of E-CNY Boarding Code in Urban Rail Transit
［Objective］ As in China E-CNY (hereinafter referred to as "digital currency") flourishes in all walks of life, the application scenarios of digital currency in urban rail transit are gradually enriched. Traditionally,...
Air Defense Scheme of Airside MRT Vehicle Base in Shanghai Pudong International Airport
Objective The air defense control mode for airside MRT（mass rapid transit system） vehicle base of the airport directly affects the airport air defense safety and vehicle maintenance efficiency. Incorporating Pudong Int...