| The weak point of anchor anchoring system is its interface, the interfacial adhesion anchor anchoring system play an important role on strength, stability and security of the entire structure of anchoring system. A large number of engineering examples and experiments show that: the process of destruction of anchoring system is very long, and it is related to the rheological properties of various media. Therefore, in this paper,we have researched the rheological properties of the pressure-type anchor bolt interface, which has the significance of theoretical and practical. Based on the results of previous studies, methods of combining laboratory experiments and theoretical analysis applyed, and the rheological properties test of pressure-type anchor bolt interface is conducted to more comprehensively study the properties of anchoring interface, the main contents are as follows:1, The original RYL-600 rock shear rheological testing machine has been improved, the rheological properties tests of interface of the pressure-type bolt anchoring are conducted, and the failure behavior, load- displacement curve of anchoring segment and distribution segment axial force and shear stress along the anchorage interface of the specimens are obtained and analyzed, with the influence of the anchorage length and anchoring strength and rating of anchoring considered.2, The real-time strains of each monitoring point are measured by using a strain gauge,which obtain the creep curves of anchoring interface and isochronous load-strain curve; then the creep trends at different locations of anchoring interface is analyzed, and the sticky elastic-plastic change process and transfer mechanism interface of anchor is dicussed.3, Based on the rheological test of interior anchor interface and medium model theory,a new model combined by six elements are established, which can identify the parameters of the new model and match that with experimental data by analyzing the test data. |
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