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High Cut Slope stability analysis and anchoring

Author: LiHuaiZhen
Tutor: ZhuWenXiao；WangWuJun
School: Guizhou University
Course: Geotechnical Engineering
Keywords: High Cut Slope Stability Analysis Anchoring effect Optimal design FLAC program
CLC: U417.1
Type: Master's thesis
Year: 2007
Downloads: 400
Quote: 12
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Abstract


Countries since the western development, with a large number of railway, highway engineering advance to the mountains of human engineering activities excavation cut slope formed a lot of cutting high slope, and increasing height. And southern China, mostly in hilly and mountainous areas, large depth of strata weathering covering layer is thick, broken rock mass structure, cutting high slope engineering issues are more prominent. This paper of 20 multiple cutting high slope of the site investigation, analysis, summarizes the characteristics of the way out of a High Slope, influencing factors, deformation and failure mode. Slope thrust commonly used method introduced at the same time, pointed out that the slope thrust calculation, slope thrust principles of various types of slope and the common form of damage to the sliding surface is divided into five kinds Type; recovery state by road cutting slope excavation at the old landslide and step-by-step of a High Slope excavation limit equilibrium analysis the stability state simulation, combined with pre-construction geological exploration data drawn rainfall, groundwater, and step-by-step excavation impact on slope stability. In recent years, the prestressed anchor cable anti-slide pile and prestressed anchor frame beam novel anti-slide retaining structures has an important role to play in the remediation of High Cut Slope, but anchor theory is still far behind in engineering practice. Slope of prestressed anchor frame beam reinforcement mechanism of summary, a detailed analysis of the course of their work in three phases. By analyzing the interaction between the prestressed anchor and rock and soil, the stabilizing piles of rock and soil, Prestressed Anchor and anti-slide pile summed up the the slope reinforcement mechanism of prestressed anchor friction pile, and the pile anchor both co-ordination between the deformation. Confrontation the slippery piles need to set the anchor rope, anchor rope the need for initial prestress is applied to determine under what conditions the anchor cable initial prestress value analysis. Finally, we propose the anchoring effect of influencing factors and evaluation parameters. The anchoring engineering instance the numerical simulation support after the SLOPE displacement size, the safety factor, the distribution of plastic zone, the internal forces of the anti-slide retaining structures distribution reasonable aspects of analysis, evaluation of the reinforcement of the slope effect. Combination of numerical simulation on the basis of the actual engineering support parameters to optimize the design of the supporting structure parameters, and can meet the safety requirements and good anchoring effect optimization program, and draw some of both theoretical significance and actual application of the value of the beneficial conclusion.

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CLC: > Transportation > Road transport > Road works > Roads ancillary structures and along the facilities > Protection works
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