基于EPS减荷措施的高填涵洞试验研究

Field Test and Numerical Simulation Study on the Load-reducing Effect of EPS on the Highly Filled Culvert

通过大型高填方涵洞原位减荷试验,对采用EPS减荷材料下的土压力和位移进行了监测,将未减荷情况与不同厚度EPS减荷情况下的结果进行了对比分析,并采用Marc有限元分析软件对其进行了数值仿真,研究了EPS材料的减荷特性及减荷后涵洞结构相关性状的变化规律。结果表明:EPS减荷效果显著,减荷后涵洞结构受力有所改善,为工程设计与施工提供了有效的指导和参考依据。

Through large-scale field test by using EPS material on highly filled culvert, the soil pressure and displacement have been measured. AT the same time, the results between the circumstance of non load-reducing and load-reducing in different thickness of EPS have been compared and analyzed. Also the finite -software of Marc has been adopted to study the particularity of EPS in load reducing and the variation pattern of inner force stress on structure.The results show that EPS has goed effect on load-reducing and the load- reducing measure can improve the inner-force of structure, which can provide a reference criterion for the project design and construction.