高填涵顶垂直土压力计算理论研究

目前，高填涵洞已广泛应用于交通等基础设施领域，但涵顶垂直土压力作为其结构设计主要荷载，国内外尚无统一的计算理论或方法，在设计时存在着安全和经济两方面的矛盾，因此，有必要对其主要土压力理论适用性做进一步研究。本文在分析这些土压力计算理论机理的基础上，结合一高填涵洞现场实测涵顶垂直土压力，对监测数据与主要土压力理论计算数值进行了对比；分析讨论了高填涵顶垂直土压力的特点及各种土压力理论对其计算时的优缺点和适用范围；其成果可供其它相似工程设计参考。

Study on theories for vertical soil stress on the culvert under deep filled soil

Nowadays, the culvert under the deep filled soil in mountainous area has been largely used in the basic establishments in traffic and so on. However, its soil stress on the culvert, the main load about structure design, is calculated without uniform theories. Therefore, there is the contradiction of the safety and economy in the design. So it is necessary to further study the applicability of the main soil stress theories. According to the practical measurement of vertical soil stress on a culvert under deep filled soil, the paper studies the characteristics of the vertical soil stress on the culvert under deep filled soil and contrastively analyzes the practical measure data and the theoretic calculated data based on the analysis of the existing main theories for the vertical soil stress on the culvert under deep filled soil. Finally, the paper also discusses the merits, defects and application confinement of these theories. These conclusions can also be used in the similar engineering designs.