APPLICATION OF FRAME STRUCTURE WITH PRE-STRESSED ANCHOR ROD FOR TREATMENT OF DEEP CUTTING SLOPE ENGINEERING
Frame structure with pre-stressed anchor rod is a new supporting structure for reinforcing slope. The distributing forms of stress state in rock-soil mass will occur to change after used of pre-stressed anchor rod. Additional stress and compressive deformation of rock-soil mass based on the elastic theory are hellaful to analyzing pre-stress losses and displacements of frame structure and slope surface. The internal force expressions of the frame structure were deduced according to deformation coordination analysis among the we-stress anchor rod, rock-soil mass and frame structure. By using of the analysis of the saturated-unsaturated seepage, Fredlunds strength theory of unsaturated soil and Bishops method, the analysis of saturated-unsaturated slope stability provides the most dangerous sliding plane. The project example is about a deep cutting slope engineering of Luoding freeway at the 16th section of contracts at Dinxi area. The results of the lengths, diameters and distances of pre-stress anchor rod, the sectional dimensions and reinforcement of frame structure showed that the method of frame structure is credible and secure to treatment of the freeway slope,which could provide a theory method for the supporting structure design.
Frame structure Pre-stress anchor rod Rock-soil mass Slope stability
Hui-Shan Li Ping Li Xue-Tao Wen Xin-Bo Yang
College of Civil Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, P.R. China Gansu Roadway and Bridge Corporation Ltd., Lanzhou 730000, P.R. China
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
987-993
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）