地铁车站基坑支护结构造价影响因素分析及控制研究

Analysis and Control Research on Factors Influencing the Cost of Excavation Support Structures in Subway Stations

随着我国城市轨道交通建设高速发展,地铁工程的规模不断增大,车站深基坑遇到的地质条件日趋复杂,支护结构的施工难度提高,导致造价始终居高不下。因此,如何科学合理地控制支护结构造价,同时保证其稳定性,成为了地铁车站建设中面临的关键问题。文章以西安地铁某车站基坑开挖支护工程为研究对象,设置不同桩径、桩间距和嵌入比,通过改变围护桩施工方案的单因素指标,以揭示工程造价的变化规律。

With the rapid development of Chinas urban rail transit construction,the scale of the subway project is increasing,the geological conditions encountered by the deep foundation pit of the station are becoming increasingly complex,and the construction difficulty of the supporting structure is increasing,resulting in the high cost.Therefore,how to scientifically and reasonably control the cost of supporting structure and ensure its stability has become a key problem in the construction of subway station.Taking the foundation pit excavation and support engineering of a subway station in Xian as the research object,this paper sets up different pile diameters,pile spacing and embedding ratio,and reveals the change law of engineering cost by changing the single factor index of the construction scheme of retaining piles.