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Construction method of material type yielding model of energy absorption anchor rod/anchor cable

A construction method and anchor cable technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve the problems of no energy-absorbing anchor rod/anchor cable numerical analysis model, structural form and complex stress-strain relationship, etc. achieve a wide range of effects

Active Publication Date: 2021-04-23
CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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Problems solved by technology

However, due to the relatively complex structural form and stress-strain relationship of the material-type yielding model of energy-absorbing bolts / cables, the existing numerical simulation methods can only perform convenient and effective numerical simulations on ordinary bolts / cables (i.e. Model construction and calculation analysis), there is no numerical analysis model suitable for energy-absorbing bolts / cables

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  • Construction method of material type yielding model of energy absorption anchor rod/anchor cable
  • Construction method of material type yielding model of energy absorption anchor rod/anchor cable
  • Construction method of material type yielding model of energy absorption anchor rod/anchor cable

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Embodiment Construction

[0137] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be further described in detail below in conjunction with the drawings in the embodiments of the present invention.

[0138] see figure 1 , a method for constructing a material-type yield model of an energy-absorbing anchor rod / anchor cable provided by the present invention, comprising:

[0139] Step 101: making a hardening-softening-fracture material information file;

[0140] The hardening and softening fracture material information file includes: anchor cable / rock bolt body type number n, material name material_name_1-material_name_n, original gauge length l of the tensile test piece corresponding to the stress-strain curve of the material tensile test 01 ~ l 0n , The yield-hardening critical strain ε in the stress-strain curve of the material tensile test 11 ~ε 1n , hardening-softening cr...

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Abstract

The invention discloses a construction method of a material type yielding model of an energy absorption anchor rod / anchor cable. The method comprises the following steps: making a universal file, classifying and numbering anchor cable / rock anchor rod bodies and yielding devices, obtaining hardened and softened fracture material information, writing the hardened and softened fracture material information into the universal file, obtaining yielding information, writing the yielding information into the universal file, and grouping and naming anchor cable / rock anchor structure units in a main calculation program and calling generic files. By means of the method, simulation of the real working performance of the yielding anchor rod / anchor cable under different stress states can be achieved, the yielding mechanism can be truly reflected, and the method has important significance in safety analysis of an anchor rod / anchor cable supporting structure.

Description

technical field [0001] The invention relates to the field of rock engineering support structure analysis, in particular to a method for constructing a material-type yielding model of an energy-absorbing bolt / cable. Background technique [0002] In rock engineering, such as the mining of mineral resources, the development of water energy resources, the construction of railways and roads, etc., ordinary anchors / cables (such as threaded anchors) are generally used in combination with mortar and resin anchoring agents for surrounding rock support. , which is widely used because of its simple supporting process. However, since ordinary bolts / cables are very rigid bolts / cables, when the ultimate load is reached, the amount of deformation they can provide is very small, so in large-deformation rock engineering, ordinary anchors / cables will The anchor rod / cable breakage fails due to insufficient deformation of itself. With the development of the support concept and the update of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/13G06F119/14
CPCG06F30/20G06F30/13G06F2119/14
Inventor 丁秀丽黄书岭秦洋何军刘登学刘通灵
Owner CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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