Assembled rectangular reinforced concrete water saving tank

Abstract

The invention discloses an assembled rectangular reinforced concrete water saving tank. The outer contour of the cross section of a tank body is rectangular, and the inner contour is trapezoidal; the tank wall is a right trapezoid structure with narrow top and wide bottom; the outer side wall of the tank wall is a right-angled edge, and the connected place with the tank bottom is a right angle; and the inner side wall of the tank wall is an inclined edge, and the connected place with the tank bottom 2 is transited by chamfering or rounding. The ratio of the notch width to the tank depth is 1: 1-1: 0.5; the notch width is within 300-1200 mm; a sealing groove is formed in the end surface of one side of the tank body, and a joint is formed in the other side; and a reinforcement skeleton is prefabricated in the tank body. The assembled rectangular reinforced concrete water saving tank overcomes such technical difficulties as surface roughness, weak anti-seepage effect, waste of land resources, single structural size, incapability of satisfying the anti-freezing and anti-swelling requirements through mechanical performances, incapability of realizing reinforcement distribution, no economy and no environmental protection in a pressed U-shaped tank, further improves the durability, prolongs the service life of a channel from original 3-5 years to above 20 years, and is higher in superiority when being applied to cold regions and bad foundation soft soil layers.

Description

technical field [0001] The invention relates to the fields of agriculture and food processing, machinery and equipment, in particular to a reinforced concrete water-saving tank for irrigation and drainage of farmland, in particular to an assembled rectangular reinforced concrete water-saving tank. Background technique [0002] At present, the prefabricated concrete water-saving tanks used in domestic concrete water-saving channels mainly use U-shaped grooves pressed with dry hard concrete in the factory. The cross-sectional structure of this U-shaped groove is: the bottom of the groove is semicircular, and the groove wall and the horizontal plane It is connected with the bottom of the semicircular groove at an angle of 5-15 degrees to form a trapezoidal channel with a curved bottom. Although this kind of channel has played a certain role in saving water compared with the traditional earth canal in the past farmland water conservancy construction, there are still many deficie...

AI Technical Summary

Problems solved by technology

[0003] 1. Since the U-shaped groove is made of dry hard concrete and the pressing production process is adopted, the inner and outer walls of the U-shaped groove produced are very rough. Through actual measurement, it is found that the surface roughness of the channel is between 0.018-0.022, and the resistance to water flow Large, easy to cause silt accumulation

[0004] 2. Due to the use of dry hard concrete in the production process of the pressed U-shaped groove, restricted by the fluidity of the concrete, the produced product has uneven concrete density, and the impermeability of the U-shaped groove cannot be guaranteed. In order to make the channel It has good anti-seepage performance, and the foundation must be treated during construction. The main measure is to add a geomembrane at the bottom of the foundation to enhance the anti-seepage performance of the channel, thus increasing the construction cost

[0005] 3. Restricted by the production process, the length of the pressed U-shaped groove is only 500mm, the width of the groove is less than 800mm, and the thickness of the groove wall is only 1 / 10 of the width of the groove, which cannot meet the requirements of the canal system structure in large irrigation areas. In addition, due to the wall thickness Thin, not suitable for use in canal systems with frost heaving requirements

[0006] The reason is: if the length exceeds 500mm, the width of the notch is less than 800mm, and the thickness of the groove wall is greater than 1 / 10 of the width of the notch, then the production must be realized by high-power equipment, which will cause waste of energy and generate huge noise and serious pollution surroundings

[0007] 4. The U-shaped trough formed by pressing can only be plain concrete and cannot be equipped with steel bars, because the steel bars will produce elastic deformation during the pressing process. When the pressure is removed, the steel bars will rebound. At this time, the concrete has not yet hardened, which will cause concrete cracks

[0008] 5. The U-shaped section structure produced by the pressing method is a trapezoidal section with a curved bottom, which causes a waste of land resources

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