中北大学学报（自然科学版）2017，Vol.38Issue(2)：133-139,7.DOI:10.3969/j.issn.1673-3193.2017.02.007
土钉墙潜在破裂面确定方法
Determination Method of Soil Nailing Wall's Potential Slipping Surface
摘要
Abstract
The position and shape of soil nailing wall's potential failure surface plays an important role in calculation of uplift bearing capacity of the soil nailing.Based on the interrelation between potential fracture surface's soil residual sliding force and soil nailing force in slip zone,a new method was proposed to determine the potential failure surface of soil nailing wall.It is believed that soil nailing position of maximum axial force in slip zone and soil nailing wall potential failure surface should overlap each other,and the location of the potential failure surface of soil nail wall can be determined by calculating maximum axial force of layered soil nail in slip zone.Different distribution patterns of soil pressure have a large impact to on the maximum soil nail axial force and the position of potential failure surface.Finally according to the measured data of wall of CEBTP large scale experiment in France,the distribution patterns of soil pressure's effect to the determination of soil nail wall potential fracture surface could be analyzed,such as Pentagon soil pressure,Peck soil pressure,railway soil pressure and the foundation pit soil pressure distribution patterns.Potential failure surface of soil nailing wall based on Pentagon soil pressure distribution pattern is comparative in accordance with the measured fracture surface.The area ratio of calculated slip zone and measured slip zone is 0.94,and the sum of squares of horizontal distance between calculated potential failure surface and measured fracture surface is 0.917.关键词
土钉墙/潜在破裂面/土压力分布模式/钉土作用Key words
soil nailing wall/potential slipping surface/soil pressure distribution model/soil-nail interaction分类
建筑与水利引用本文复制引用
李建军,冯振桥,董洁,郭玉涛,李相斌..土钉墙潜在破裂面确定方法[J].中北大学学报（自然科学版）,2017,38(2):133-139,7.基金项目
山西省煤层气联合研究基金资助项目(2012012003) （2012012003）
国家自然科学基金资助项目(51408558) （51408558）
