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依托十漫高速公路高填方涵洞工程,结合现场测试结果,采用理论分析和数值模拟的方法研究了高填方涵洞垂直土压力分布特征和变化规律,并对顾安全垂直土压力理论计算公式进行了修正,得出与现场实测结果更为接近的高路堤下涵洞垂直土压力计算方法。研究结果表明:高填方涵洞涵顶存在垂直土压力集中现象,土压力集中系数随填土高度的增加逐渐增大,当路堤填土达到一定高度后逐渐趋于稳定并略有减小。
Relying on the project of high fill culvert of Shumu expressway, combining with the field test results, the vertical earth pressure distribution characteristics and variation laws of high fill culverts are studied by theoretical analysis and numerical simulation. The theoretical formula of vertical earth pressure theory Corrected, the calculation method of vertical earth pressure of culvert under high embankment which is closer to the field measured results is obtained. The results show that there is vertical soil pressure concentration in culvert culvert at high fill, and the concentration factor of soil pressure increases with the increase of fill height. When the embankment reaches a certain height, it gradually stabilizes and slightly decreases.