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Frost-heave damage checking method for concrete lining layer of water delivery channel slope in winter

A technology for concrete and lining layers, which is applied in calculation, instrumentation, geometric CAD, etc., can solve problems such as the influence of two-way freezing deformation interaction, and achieve safe and reliable operation and the effect of engineering benefits

Active Publication Date: 2019-02-22
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical model does not take into account the two-way freezing of the canal slope and the interaction between the concrete lining layer and the deformation of the canal foundation soil

Method used

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  • Frost-heave damage checking method for concrete lining layer of water delivery channel slope in winter
  • Frost-heave damage checking method for concrete lining layer of water delivery channel slope in winter
  • Frost-heave damage checking method for concrete lining layer of water delivery channel slope in winter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The invention proposes a method for checking and calculating the anti-frost heave damage of the concrete lining layer of the side slope of the aqueduct in winter. For the concrete lining layer of the side slope of the canal without horizontal joints, the concrete lining layer of the side slope of the canal is regarded as the fixed hinge support at the foot of the slope. The water level surface is the component of the movable hinge support, and the mechanical model of the frost heave damage check calculation of the concrete lining layer of the canal slope is established, and the stress generated by the transverse bending action of the component or the combined action of tension and bending is compared with the axial tensile strength of the concrete To judge whether the slope concrete lining can resist the damage caused by frost heave.

Embodiment 2

[0032] The method for checking and calculating the anti-frost heave damage of the concrete lining layer of the aqueduct slope in winter as described in this embodiment differs from that of embodiment 1 in that: the mechanical model required by embodiment 1 is established in order to carry out the anti-frost heave of the concrete lining layer damage check,

[0033] When the slope concrete lining layer can restrain the frost heaving deformation of the canal foundation soil, the deformation of the two is coordinated, and the slope concrete lining layer and the permafrost are frozen as a whole, at this time, the direction of the frost heave force is consistent with the normal direction of the slope surface The normal frost heave force and the tangential frost heave force pointing to the top of the slope only act on the slope concrete lining in the area above the water level, and both of them are based on the value of zero at the water level of the canal and the value of the top of ...

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Abstract

The present invention relates to a method for checking anti-frost heaving damage of a slope concrete lining layer of a water conveyance canal in winter. The method is applied to the design of an open channel water conveyance canal and to perform a force analysis on a slope concrete lining layer under an 5 of canal base soil frost heaving. The method comprises: by using a canal slope concrete lining layer as a member with a slope foot as a fixed hinge support and a water level surface as a movable hinge support, establishing a mechanical model of checking the anti-frost heaving damage of a canal slope concrete lining layer; and determining, according to a stress generated by a transverse bending effect or / and a stretch-bending combination effect of the member and axial tensile strength of concrete, whether the slope concrete lining layer can resist the damage generated by a frost heaving effect. According to the method for checking anti-frost heaving damage provided by the present invention, influence of interaction between canal slope bidirectional freezing as well as a concrete lining layer and canal base soil deformation is considered; and a deficiency of a checking method of anti-frost heaving damage capacity of a slope concrete lining layer under the circumstance of water conveyance by a concrete canal in a permafrost region is made up.

Description

technical field [0001] The invention relates to a method for checking and calculating the anti-frost heave damage of the slope concrete lining layer of an aqueduct in winter, which is applied in the design of an open channel water conveyance channel to analyze the force of the concrete lining layer of the slope under the action of frost heaving of the foundation soil of the canal. Background technique [0002] Trapezoidal concrete-lined channels are widely used in water transfer projects due to their advantages of convenient construction, simple maintenance and repair, and strong engineering durability to improve the efficiency of open channel water transfer, enhance the anti-scour capacity of channels and improve water flow conditions. The inclined length of the concrete lining layer of the side slope of the channel is determined according to the hydraulic conditions, and the thickness of the lining layer is determined according to experience. This method is applicable to c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/20
Inventor 宋玲
Owner SHIHEZI UNIVERSITY
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