摘要
土钉墙和由它派生出的复合支护方式在实际工程中广泛应用,但在理论上对它的挡土机理研究还不够。本文对均质土中的土钉墙,采用数值分析方法,探讨开挖过程中土钉、面层、土体三者的受力变化及土钉墙的稳定机理,得到了面层受到的总土压力是主动土压力的0.05倍等一些结论。
The soil - nailing wall and the composite earth - retaining structures derived from it have widely been used in deep excavation. However,its earth -retaining mechanism has been investigated to be insufficient. With use of numerical analysis, this paper discusses the stability mechanism of soil - nailing wall in homogenous soil by analyzing the stress change during excavating within soil nails, the facing and soil mass, which make up of the structure of soil - nailing wall. Some conclusions are presented, for example, that the pressure force on the facing of soil - nailing wall is about 0.05 times the value of the total active thrust determined by the Rankine＇s theory.
出处
《城市勘测》
2008年第4期138-141,共4页
Urban Geotechnical Investigation & Surveying
关键词
土钉墙
面层
数值分析
主动土压力
soil - nailing wall
facing
numerical analysis
active earth pressure
