论文部分内容阅读
结合现行公路和铁路隧道设计规范隧道围岩静土压力计算方法,假定地震作用下隧道围岩土体中形成的破裂面,由静力平衡推导出隧道地震土压力计算公式,并把常用的地震动土侧压力系数汇成可查的表格。该法属于滑楔—烈度法范畴,与目前常用的针对挡土墙结构提出的其他拟静力计算方法进行比较,它计算的地震动土侧压力系数与静土侧压力系数的增量计算值与其他方法的平均值接近,同时形式上与静土压力计算式接近,当水平地震系数为0时,公式与静土压力公式吻合,适合工程师应用。
Combined with the current highway and railway tunnel design code, the calculation method of the earth pressure of the surrounding rock of the tunnel is established. Assuming the rupture surface formed in the surrounding rock and soil mass under the action of earthquake, the earth pressure of tunnel is derived from the static balance. Ground pressure coefficient can be summarized into the table. This method belongs to the category of wedge-intensity method, and compares with the other commonly used quasi-static calculation methods proposed for retaining wall structures. The incremental calculation values of the calculated soil side pressure coefficient and the static side soil pressure coefficient and Other methods averages close to each other and is formally close to the calculated earth pressure. When the horizontal seismic coefficient is 0, the formula is consistent with the earth pressure formula and is suitable for the engineer’s application.