【摘要】 针对特高填方区拱涵的开裂现象,取拱涵周围土体为整体研究对象,考虑填土的不同性质和不同厚度,采用有限单元法对拱涵的受力性能进行分析。计算表明,目前某些特高填方区的拱涵,其受力性能不好,抗开裂的能力严重不足。在此基础上,提出一种受力性能优良的拱涵断面形式供设计参考。更多还原

【Abstract】 For the phenomenon of cracking of an arch culvert in the super-high fill area,the paper takes the arch culvert and the surrounding soil as the investigated object to carry out the finite element analysis on the mechanical performance of arch culvert,which considers the properties and the thickness of fill.The computation shows that the cracking resistance capacity of some arch culverts being constructed in the super-high fill area is not sufficient.Based on the analyses,an optimal type of cross section of arch culvert with excellent mechanical performance is presented for reference.更多还原