| As a main method of the modern ground project reinforcement, the pre-stressed anchor cable had several dozens year historical development in our country, but it is a novel research project that utilizes the pre-stressed anchor cable tunnel and in the understructure work. In the foundation of the design theory of side slope project and so on related ground project pre-stressed anchor cable, this article has carried on the design and the research to the tunnel and the understructure work using pre-stressed anchor cable reinforcement,and analysis obtained the following results through a more systematic theoretical。①analysis the use of cable in the strengthening mechanism of underground, and the cable and cause damage in the form of detailed analysis and elaboration. and obtained the superiority of modeling approach use flac rock Finally the slope engineering and underground engineering mechanism for the use of the difference.②Details surrounding rock stability in underground engineering factors and analysis of surrounding rock stability, proposed stress redistribution after excavation surrounding the calculation methods and determination of rock pressure。Finally, commonly used in underground engineering prestressed bond-type anchor of the anchoring force of the determined formula.③projects listed in the type commonly used in prestressed cable, and a detailed analysis of various types of prestressed cable structures and engineering features. Finally, the central idea of the new Austrian law, the analysis of various types of prestressed anchor to discuss, draw: Design of prestressed anchor in the underground, it is best to use pressure and self-adaptive distributed cable anchor.④Made a detailed presentation for the design of prestressed cable underground, highlights the range of loose circle method of determining ,and underground engineering is proposed to calculate the length of prestressed cable design formula, rich in underground engineering design theory of prestressed anchor。... |
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