超大断面浅埋暗挖地铁车站转换段施工技术

Construction Technology of Conversion Section of Shallow-buried Subway Station with Super-large Section

在超大断面浅埋暗挖地铁车站,采取有效的施工方法实现转换段施工,对于确保车站施工安全有至关重要的作用。以重庆轨道交通9号线天梨路车站工程为例,分析了施工通道、附属结构与超大断面车站主体隧道转换段暗挖施工安全风险,通过改进的施工方法和优化施工保障措施,成功解决大断面浅埋挖隧道转换段开挖难题。

Taking effective construction methods to realize the construction of transfer section in super large section shallow buried underground subway station plays a vital role in ensuring the safety of station construction. Taking the underground excavation section of Tianlilu Station of Chongqing Rail Transit Line 9 as a carrier, the paper analyzes the safety risks of dark excavation construction at the intersection between the construction channel, the auxiliary structure and the main tunnel of the super-large subway station. Through improved construction methods and optimized construction support measures, the excavation problem of the conversion section of the large-section shallow buried tunnel was successfully solved.