摘要
以勉宁某段高速公路的路肩式加筋土挡墙工程为实例,运用有限元理论和方法对加筋土挡墙潜在滑移面、合理的加筋竖向间距以及拉筋的长度进行了分析和研究。结果表明:加筋土挡墙的潜在滑移面与挡土墙顶面交于0.3H附近,形状为对数螺旋线型;加筋长度采用0.7H就足够保证挡土墙的稳定性;加筋间距采用0.4 m较合理。其结论有助于达到安全节省的设计目标。
This study is conducted according to the project of road shoulder type reinforced earth retaining wall located in a certain express road in Mianning, Shaaxi. The latent breaking surface of the reinforced earth retaining wall, the reasonable vertical layout reinforcement＇ s interval values and the length of reinforcements are studied by FEA. The results show that the latent breaking surface of the reinforced earth retaining wall is joined with the top surface near 0. 3 multiple of the height of the wall, but it belongs to logarithmic spiral type, and it can supply the reinforced earth retaining wall with enough anchor force to make the wall stable with the length of reinforcements adopting 0. 7 multiple of wall height, and it is reasonable to adopt 0. 4 meters for vertical layout reinforcement＇ s interval value. The results show that this method help us to reach the goal of the design with safety and cost saving.
出处
《西安科技大学学报》
CAS
北大核心
2007年第2期218-223,共6页
Journal of Xi’an University of Science and Technology
关键词
加筋土挡墙
有限元分析
破裂面
加筋间距
拉筋长度
reinforced earth retaining wall
finite element analysis
breaking surface
reinforced interval value
length of reinforcement
