北京地铁工程抗震设防水准的研究

Research of Beijing Subway's Earthquake Fortification Level

随着地铁工程的兴建,地铁工程的抗震设防水准如何选取已成为地铁抗震设计中急待解决的问题。本文以北京具有典型意义的地铁线路———北京地铁五号线作为研究目标,在对地铁五号线沿线地震、地质条件分析的基础上,选取地铁五号线上反映不同地质条件和反应谱特征的四个站点:刘家窑站、棋院站、灯市口站、大屯站进行分析研究,分析研究在不同场地条件、不同风险水平和不同深度条件下的地震动参数和反应谱变化规律,确定北京地铁工程的抗震设防风险水平。

With the rapid development of subway engineering, subway＇s earthquake fortification level becomes an urgent problem in subway seismic design. Based on four subway stations of the fifths subway line of Beijing which reflect different geological conditions and response spectrum characteristic, this paper discusses the variational regular pattern in different site condition, different risk level and different depth, ascertain Beijing subway＇s earthquake fortification level.