Preparation method of improving prestress of cement electric pole

A technology for cement poles and poles, which is applied in the field of concrete processing and cement products. It can solve the problems of poor acid, alkali and salt corrosion resistance of poles, high cost of steel bar production equipment, and difficult steel bar production, so as to shorten the production cycle and speed up production. The effect of shortening the setting time and curing time

Inactive Publication Date: 2017-02-15
GUANGXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Under the influence of the national grid policy, the cement product industry has sprung up like mushrooms. Different cements use different raw materials and processes. At present, the concrete poles for power transmission mainly use prestressed poles made of ordinary concrete. Prestressed electric poles and ordinary concrete electric poles, a Chinese patent, application number: 201210343090.5, named: a partially prestressed concrete electric pole, the electric pole is designed in a conical shape, and its internal steel bars, grounding steel rings, and method Lanhe vertical ring, wherein the steel bars include longitudinally stressed straight steel bars and spiral steel bars, and longitudinally stressed straight steel bars include prestressed steel bars and non-prestressed steel bars arranged at intervals. The steel bars in the above documents are difficult to manufacture, and the production High equipment cost, long production cycle Poor resistance to acid, alkali and salt corrosion, poor freeze-thaw resistance, high brittleness of concrete, prone to shrinkage cracks

Method used

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  • Preparation method of improving prestress of cement electric pole
  • Preparation method of improving prestress of cement electric pole
  • Preparation method of improving prestress of cement electric pole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: The specification model is Φ130 / 223×7m Production and processing methods:

[0032] (A) The selected raw materials are: cement, sand, gravel, water, water reducing agent and steel bars, and then weigh the mass of each pole with a specification model of Φ130 / 223×7m, cement 54.5kg, sand 90.7kg, gravel 158.3kg, 14.7kg of water and 1.04kg of water reducing agent, among which there are 9 main steel bars for each pole, the length is 7000m±1.5mm, the diameter of the main steel bars is 5-8mm, and several winding bars and erecting rings The diameter of the erecting ring steel bar is 5-8mm, the diameter deviation of the erecting ring is ≤1.5mm, the unevenness is ≤2.5mm, the out-of-roundness is ≤1.5mm, the diameter of the winding bar is 2.5-5mm, and the cement specification is P•Ⅱ52R.5R, the fineness modulus of the sand is 2~2.5, the crushed stone adopts continuous particle size of 5~20mm, and the crushing index is ≤8%;

[0033] (B) Processing of the steel skeleton cage...

Embodiment 2

[0041] Example 2: The specification model is Φ150 / 283×10m Production and processing methods:

[0042] (A) The selected raw materials are: cement, sand, gravel, water, water reducing agent and steel bars, and then weigh the mass of each pole with a specification model of Φ150 / 283×10, cement 112.8kg, sand 181.6kg, gravel 319.83kg, 29.8kg of water and 2.37kg of water reducing agent, including 15 main steel bars for each pole, the length is 10000m±1.5mm, the diameter of the main steel bars is 5-8mm, several winding bars and erecting rings, The diameter of the steel bars for erecting rings is 5-8mm, the diameter deviation of the erecting rings is ≤1.5mm, the unevenness is ≤2.5mm, the out-of-roundness is ≤1.5mm, the diameter of the winding bars is 2.5-5mm, and the cement specification is P• Ⅱ52R.5R, the fineness modulus of the sand is 2~2.5, the crushed stone adopts continuous particle size of 5~20mm, and the crushing index is ≤8%;

[0043] (B) Processing of the steel skeleton cage...

Embodiment 3

[0051] Embodiment 3: The specification model is Φ190 / 350×12m Production and processing method:

[0052] (A) The selected raw materials are: cement, sand, gravel, water, water reducing agent and steel bars, and then weigh the mass of each pole with a specification model of Φ190 / 350×12m, cement 182.3kg, sand 296.2kg, gravel 512.2kg, 47.4kg of water and 3.64kg of water reducing agent, including 12 main steel bars for each pole, the length is 12000m±2mm, the diameter of the main steel bars is 5-8mm, several winding bars and vertical rings, The diameter of the vertical ring steel bar is Φ5-8mm, the diameter deviation of the vertical ring is ≤1.5mm, the unevenness is ≤2.5mm, the out-of-roundness is ≤1.5mm, the winding diameter is 2.5-5mm, and the cement specification is P•Ⅱ52R. 5R, the fineness modulus of the sand is 2-2.5, the crushed stone adopts a continuous particle size of 5-20mm, and the crushing index is ≤8%;

[0053] (B) Processing of the steel skeleton cage: the selected e...

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Abstract

The invention belongs to the technical field of processing cement products and concrete and particularly relates to a production processing method of improving prestress of a cement electric pole. The production processing method comprises the following steps: selecting raw materials according to the cement electric poles in different specifications and models firstly, then processing the weighed raw materials, carrying out steam curing on the processed and formed cement electric poles, and finally, carrying out inspection and maintenance on the cement electric poles. The production processing method comprises the following concrete steps: (1) selecting the raw material; (2) processing a reinforced skeleton frame cage; (3) cleaning a steel die; (4) blanking, and stirring; (5) charging and covering a steel die cover; (6) carrying out centrifugation; (7) carrying out steam curing; (8) disassembling a steel die shell, and carrying out inspection; and (9) carrying out maintenance and warehousing. The cement electric pole is high in prestress strength, good in reliability, low in cost and short in production cycle, and the production processing method can be suitable for the electric poles with lines in various specifications with voltage below 110KV.

Description

technical field [0001] The invention belongs to the technical field of cement products and concrete processing, and in particular relates to a production method for increasing the prestress of cement poles. Background technique [0002] In recent years, my country's electric power construction has developed rapidly. The State Grid uses UHV power grids as the backbone grid. Optimized allocation of resources. Under the influence of the national grid policy, the cement product industry has sprung up like mushrooms. Different cements use different raw materials and processes. At present, the concrete poles for power transmission mainly use prestressed poles made of ordinary concrete. Prestressed electric poles and ordinary concrete electric poles, a Chinese patent, application number: 201210343090.5, named: a partially prestressed concrete electric pole, the electric pole is designed in a conical shape, and its internal steel bars, grounding steel rings, and method Lanhe vertic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B23/12B28B7/38B28B11/24E04H12/12
CPCB28B23/12B28B7/384B28B7/388B28B11/245E04H12/12
Inventor 袁子娇
Owner GUANGXI UNIV
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