The Study On The Stress Mechanism Which The Application Of High Strength Micro Expansion Of Prestressing Anchor Technique In Rock Slope

The anchoring technology has been in the slope rock anchorage, mining, foundation trench, water resources and hydropower, railways, highways, civil construction and other projects have been increasingly widely used. Call anchor technology can be applied fully and improve the soil's own capacity and strength to ensure the safety of the construction and engineering stable, and can save construction costs, speed up the construction speed, with significant economic and social benefits. However, the anchoring technique is still far behind the theoretical level of practical application in the bolt. This article mainly with the new developed "filling material", through its test data and numerical simulation method to study the anchorage in rock slope application. (1) obtaining a number of applicable theoretical formula by a summary of previous theoretical analysis and further research, in theory, the main aspects of elastic mechanics, find the bolt in the elastic range of shear stress along the rod length and the axial force distribution solution. (2) calculated according to the theoretical formula to draw the tension-type, pressure-type anchor (Cable) rod shear stress and axial force distribution curve, and discussed the impact of shear stress and axial force distribution of the main factors. (3) test and the test data analysis, has been filling the body with the grout to changes in the body than the corresponding change in the law of performance. (4) Using ANSYS software to simulate the anchorage body, rock and the contact surface of the actual situation. Major components of the bolt in by the impact of various factors in the conditions, the shear stress and axial force distribution curve. By comparing the theoretical curve, obtained some useful conclusions. (5) by comparing experimental data and research, fully demonstrates slight expansion of high strength grout material in the rock slope superiority of practical application. Yunnan is located in the mountains, rock slope more, In this paper, the actual experimental data, numerical simulation, analysis of prestressed anchor in the rock slope of the characteristics of relatively high-strength micro-expansion body filling the body with the general advantages and disadvantages of grouting, want to play anchor technology role.