Design Method of Size Effect Shear Test on Anchored Structural Surface

Abstract

A method for designing a size effect shear test of an anchorage structural surface, comprising the following steps: 1) preparing a concrete sample according to the principle of an indoor test, and the sample is a cuboid; monitor the shear stress and displacement information, and obtain the shear strength of the anchored structural surface; 3) sequentially expand the size of the structural surface, and obtain the functional relationship between the shear strength and size; 4) sequentially expand the row spacing between anchor rods, and obtain the shear strength 5) Enlarging the bolt diameter in turn to obtain the functional relational expression between shear strength and diameter; 6) Using MATLAB software to carry out mathematical analysis on the above three functional relational expressions; 7) Carrying out the Anchorage parameter design for textured slopes. The invention can improve the accuracy and scientificity of the shear strength value of the structure surface, improve the safety factor of high and steep rock slopes, and avoid the waste of materials caused by unreasonable anchoring design.

Description

technical field [0001] The invention belongs to the technical field of indoor physical and mechanical tests, and relates to a design method for a size effect shear test of a foundation anchorage structure surface. Background technique [0002] In recent decades, with the rapid development of my country's economy, there have been more and more large-scale construction projects, such as hydropower projects, deep resource mining, underground water-sealed oil depots, and nuclear power projects. Because there are often many structural planes in natural rock mass, these projects bring economic benefits and high-quality life, but also have great safety hazards, especially high and steep rock slopes, and landslides have seriously affected people's health. life and property safety. Engineering practice shows that the instability of high and steep rocky slopes is controlled by structural surfaces. When the anti-sliding force of structural surfaces is smaller than its sliding force, l...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the inaccurate, unscientific, and large deviations in obtaining the shear strength of large-scale anchored structural surfaces on-site through indoor small-scale anchored structural surface shear tests in the existing technology, which will lead to safety hazards and waste of materials, The invention provides a design method for the size effect shear test of the anchorage structural surface, which can solve the problem of the size effect of the anchorage structural surface, improve the accuracy and scientificity of the value of the shear strength of the structural surface, and improve the efficiency of high and steep rock edges. The safety factor of the slope is improved, and at the same time, the waste of materials caused by unreasonable anchorage design is avoided

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