The Factors Affecting The Anchoring Force And Numerical Simulation In The Xiangshan Geological Disaster Management Project

At present, prestressed anchor has become one of the most extensive engineering technique in geotechnical engineering. All technical personnel and engineering design personnel like the prestressed anchor, because it is simple structure, convenient construction and effective. Master various environmental factors on the influence law of pre-stress is good for improvement of design, construction, anchoring effect evaluation and anchor work mechanism research.First to Beijing xiangshan geological disaster management engineering prestress monitoring for means, through the relevant data analysis, the influence factors of affecting the prestress. Analysis and research suggests pre-stress by environmental factor, engineering factors and anchor system characteristics influence. Through ANSYS and FLAC3D numerical simulation to the actual situation of engineering, The pressure of prestressed anchor solid first by the slope, then to make the slope under pressure, in the end of the slope steady. Simulation results and practical monitoring results contrast analysis showed simulation results and monitoring of prestressed concrete basically the same trend.Pre-stress factors are analyzed in detail. Environmental factors (temperature changes) are summarized the main factors that affect pre-stress; Steel flabby, slope creep, etc in Secondary position. In addition, the cable construction technology, construction equipment to anchor effect also have greater effects. This project of prestress change does not conform to the general prestress change regularity, but appear smooth first step to reduce the change trend, then did enter the smooth stage of pre-stress. By using ANSYS for modeling, and using FLAC3D software to load, operation simulation results of stress. Think of gravity has important influence to the transfer of prestress, anchoring effect, the stability of the slope.But the prestress monitoring less time, specific test less, this study analyzed the influence of pre-stress due to lack. In the future, suggestions to anchor more aspects of monitoring, prolong monitoring time, and do more practical indoor test, To benefit of prestressed anchor research and analysis.