Solution of Horizontal Displacement of Wall Facing of Grillage Flexible Supporting Structure with Prestressed Anchors
As a new type of flexible supporting structure, grillage flexible supporting structure with prestressed anchors has been widely used in excavation of foundation pit and reinforcement of slope. At present, the foundation pit has been designed to gradually change from strength control to deformation control due to the restrictions of ambient environmental conditions. But up to now, for the deformation calculation of grillage flexible supporting structure with prestressed anchors, there is no reasonable calculating method. Based on the influence of excavation process of foandation pit, the horizontal displacement of wall facing of grillage flexible supporting structure with prestressed anchors is analyzed and solved with finite element method, in which the calculating model and the calculating sketch have been given out and the related parameters have been determined. The horizontal displacements of wall facing are calculated through an engineering example, and the curve of horizontal displacement of wall facing is obtained, which is compared with that of soil nailed wall under same condition. The comparative results show that grillage flexible supporting structure with prestressed anchors has an evident advantage in strictly controlling the deformation of foundation pit and supporting over-deep foundation pit, so this kind of supporting structure should be further popularized.
deep foundation pit engineering prestressed anchor flexible supporting structure excavation process horizontal displacement wall facing finite element
ZHOU Yong ZHU Yanpeng
School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Western Engineering Research Center of Disaster Mitigation in Civil Engineering,Ministry of Education,Lanzhou 730050,China
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
2138-2143
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）