Abstract: This paper presents a case study of the effect of surfaced traffic loads on the dynamic response of a subway train station supporting structures. The results show that: in addition to the design static load, the prestressed steel struts designed in accordance with the current code can still taking the vibration load and maintain the stability of the deep excavation. When considering the traffic load on the surrounding surface, it is necessary to design the deep excavation support structure in strictly accordance with the existing specifications. During the installation of the prestressed steel support, special attention should be paid to the influence of the supporting structure, assembling method, prestressing method and prestressing time on the supporting effect.

Key words: Subway Station, Deep Excavation, Supporting Structure, Surface Traffic Load