CN210519598U - Simple greenhouse in plateau high-cold high-altitude area - Google Patents
Simple greenhouse in plateau high-cold high-altitude area Download PDFInfo
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- CN210519598U CN210519598U CN201920789814.6U CN201920789814U CN210519598U CN 210519598 U CN210519598 U CN 210519598U CN 201920789814 U CN201920789814 U CN 201920789814U CN 210519598 U CN210519598 U CN 210519598U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
The utility model relates to a simple greenhouse in plateau alpine and high altitude areas, which comprises a plurality of transverse greenhouse arch frames which are arranged longitudinally from front to back, wherein the greenhouse arch frames are longitudinally connected by a plurality of longitudinal anchor rods which are circumferentially and uniformly distributed, and a plastic film is arranged above the greenhouse arch frames; vertical columns are arranged between the longitudinal anchor rods which are symmetrical on two sides and the ground, and the vertical columns on the two sides are inserted into the center of the ground along the radial direction. The utility model discloses the arrangement of stand is "cross distribution in the canopy, the toe meets underground", and tensile strength is higher, and corrosion-resistant, and increase of service life carries the stability on high temperature room basis and reduces the cost under the prerequisite that does not influence personnel's activity in the greenhouse, economical and practical.
Description
Technical Field
The utility model belongs to the technical field of agricultural facility, concretely relates to simple and easy greenhouse in plateau high and cold high altitude area.
Background
The natural conditions in the high-cold high-altitude areas are severe, the climatic conditions are extremely poor, the temperature difference is large day and night, and the annual average temperature is low, so the vegetation in the areas is difficult to grow, and the growth period is long. In areas where ecological environment is urgently needed to be treated and restored, vegetation cultivation cannot even be carried out under the natural conditions of the areas. The greenhouse is provided with a facility capable of changing local environment and providing better conditions for the growth of plants, but the annual average wind speed is 3m/s due to larger climate change in alpine and high-altitude areas, the annual average wind speed can reach 17m/s in winter at most, the greenhouse has special requirements on greenhouse structures, and common greenhouse structures cannot meet the requirements.
Disclosure of Invention
The utility model aims at providing a simple and easy greenhouse in high and cold high altitude area in plateau can effectually deal with the abominable climatic condition in high and cold high altitude area in plateau, and has the characteristics that the price/performance ratio is high, has stronger anti-wind ability.
The utility model discloses the technical scheme who adopts does:
the utility model provides a simple and easy greenhouse in plateau high cold high altitude district which characterized in that:
the greenhouse comprises a plurality of transverse greenhouse arch frames which are longitudinally and from front to back, wherein the greenhouse arch frames are longitudinally connected by a plurality of longitudinal anchor rods which are circumferentially and uniformly distributed, and a plastic film is arranged above the greenhouse arch frames;
vertical columns are arranged between the longitudinal anchor rods which are symmetrical on two sides and the ground, and the vertical columns on the two sides are inserted into the center of the ground along the radial direction.
The greenhouse arch frame and the upright posts are galvanized steel pipes.
The upright posts are arranged in the greenhouse in a crossed manner, and the bottoms of the upright posts are intersected underground.
The column bottom of the upright column is fixed on the embedded angle steel through a threaded nail underground.
The utility model has the advantages of it is following:
the utility model discloses a galvanized steel pipe that the frame adopted compares with ordinary bamboo wood skeleton and has good elastoplasticity, and tensile strength is higher, and corrosion-resistant, increase of service life. The arrangement mode of the upright posts is 'cross distribution in the shed, and the post ends are connected underground', compared with the common arrangement mode of no post in the shed or only vertical upright posts, the arrangement mode can make full use of the tensile and compressive properties of the galvanized steel pipes, and the overall stability of the greenhouse is improved. Therefore, the diameter and the thickness of the galvanized steel pipe can be properly reduced on the premise of ensuring enough wind resistance strength, and the arrangement mode saves more than 20 percent of the construction cost of the framework of the common greenhouse under the same strength. The fixing method of the underground angle steel between the vertical columns increases the connection point between the greenhouse and the foundation, and is different from the method that the vertical columns of the common greenhouse are directly embedded underground. In conclusion, the utility model simple greenhouse suitable for the Qinghai-Tibet plateau area can save the construction cost on the premise of ensuring the wind resistance strength; the artificial control of the growing environment of vegetation in the greenhouse can stably and efficiently cultivate the required plant varieties, and has great significance for ecological restoration and agricultural production in the Qinghai-Tibet plateau areas.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is a top view of the present invention.
In the figure, 1 is a longitudinal anchor rod, 2 is a greenhouse arch frame, 3 is an upright post, and 4 is angle steel.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
Based on the realistic condition to plateau alpine and high altitude area, the utility model provides a simple and easy greenhouse in plateau alpine and high altitude area, include along vertical, from horizontal warmhouse booth bow member 2 of multichannel that sets up backward forward, warmhouse booth bow member 2 is by the vertical connection of the vertical stock 1 of the multichannel that the hoop was evenly arranged, warmhouse booth bow member 2 top sets up plastic film. Upright columns 3 are arranged between the longitudinal anchor rods 1 which are symmetrical on two sides and the ground, and the upright columns 3 on two sides are inserted into the center of the ground along the radial direction.
The plastic film is a polyvinyl chloride film with good light transmission and small thickness, and can fully utilize the characteristic of strong sunshine, and reduce the cost of the low-temperature chamber on the premise of ensuring the heat preservation function.
The greenhouse arch frame 2 and the upright posts 3 are galvanized steel pipes, and have high strength, rust resistance, corrosion resistance and radiation resistance.
The upright posts 3 are arranged in the greenhouse in a crossed mode, and the bottoms of the upright posts are intersected underground. By adopting the arrangement of cross distribution and underground connection of the column ends in the shed, the overall stability can be obviously enhanced, and the characteristics of large wind and sand climate can be effectively dealt with. The 3 column bottoms of stand are fixed on pre-buried angle steel through the screw thread nail in the underground, improve the stability of greenhouse basis.
The construction steps of the utility model are flat ground → paying-off → arch center making and installing → vertical anchor rod and column mounting → covering film.
1. And (3) leveling the field, enabling the ground in the greenhouse to be 10cm lower than the ground outside, removing sundries such as stones, branches (roots) and the like on the surface, ensuring the leveling of the field, and then carrying out paying-off operation.
2. And (6) paying off. The meridian lines are measured by a compass, and the north-south direction and the greenhouse scale are determined. The width of the greenhouse is set to be 8-10m, the interval between the greenhouses is set to be 1m, the left edge and the right edge of the greenhouse are dug to the ground to be more than 50cm deep, and the arch center is inserted.
3. And (5) manufacturing and installing an arch center. The utility model discloses the bow member material in greenhouse chooses for use the light galvanized steel pipe that the diameter is not less than 20mm, controls the bow member and adopts the galvanized sleeve that the diameter is 25mm with top bow member connected mode. When the greenhouse is connected, the length of the sleeve is not less than 20cm, the extending amount of the arch frame is equal to the maximum extent when the greenhouse is connected, the sleeve and the longitudinal anchor rods which are longitudinally arranged are fixed by using 14# iron wire fixing steel wires, the integrity of the greenhouse is improved, and the wind resistance is enhanced.
4. And (5) installing a longitudinal anchor rod and an upright post. The utility model discloses the mode that the vertical stock and the stand of greenhouse adopt "5 indulge 2 to erect" is arranged, 5 stocks of vertical arrangement promptly, vertical arrangement 2-4 stands. Wherein, the longitudinal anchor rods are arranged with 1 at the vault and connected with the vault steel pipe, the left and right sides of the vault are respectively symmetrically arranged with 1 at the vault and connected with the upright post and the vault steel pipe, and then the two sides are respectively symmetrically arranged with 1 at the vault and connected with the sleeve of the arch center. The 2 upright posts are respectively obliquely and downwards arranged from longitudinal anchor rods which are bilaterally symmetrical to the vault, the two upright posts are intersected at 30cm below the ground, the intersection angle is set to be 60 degrees, and the lower ends of the upright posts are fixed in the equilateral angle steel of the drilled hole by utilizing threaded nails. The diameter of the longitudinal anchor rod is not less than 20mm, and the diameter of the upright post is not less than 25 mm. The arrangement scheme can effectively ensure the structural stability of the greenhouse.
5. And covering a heat preservation film. The utility model discloses greenhouse heat preservation membrane chooses for use thickness to be no less than 0.14 mm's polyvinyl chloride film. Due to the special climatic conditions in the Tibet region, the film covering time is preferably selected in the morning of sunny days and no wind. The width of the film is 4-5m longer than that of the greenhouse, the length of the film is determined according to actual conditions, and the length of the film is 8-10m longer than that of the greenhouse. After the film covering is finished, the films on the two sides are compacted by soil with the thickness not less than 15cm, and are fixed by adopting a film pressing line interval of 2-4 m; the films at the two ends of the greenhouse do not need to be fixed, so that the ventilation of the greenhouse is ensured.
According to the existing data, it is right that the utility model discloses the greenhouse carries out structural analysis. The load of the greenhouse can be divided into: constant load, wind load, snow load, crop hoist load etc. wherein constant load is steel pipe skeleton texture dead weight and tectorial membrane weight:
Wh＝Wg+Wm(1)
in the formula, WgIs the self-weight of the steel pipe skeleton structure, WmIs the weight of the film.
The wind load refers to a standard value of the wind load perpendicular to the building surface, and is calculated according to the following formula:
Wk＝βzωsωzW0(2)
in the formula, WkAs standard value of wind load, βzIs the wind vibration coefficient at z height, omegasIs the wind load body shape coefficient, omegazIs the height coefficient of variation of wind pressure, W0The wind vibration coefficient β of the greenhouse is known from the national basic wind pressure distribution diagramzTaking 1.88, wind load shape coefficient omegasThe reference arched roof is 0.6, and the wind pressure height variation coefficient omegazThe method is determined according to the ground roughness category, the general greenhouse construction area is 0.8, and the basic wind pressure W is adopted0The instantaneous maximum wind speed provided by local meteorological data is calculated by the formula:
W0＝V0 2/1600 (3)
wherein, V0The average maximum wind speed of 10min is 23.7m/s when the wind speed is 30 years after the ground is flat and 10m high. The calculation formula of the snow load is as follows:
S＝μrS0(4)
wherein S is0The maximum self weight of the snow cover on the local flat ground in 30 years is determined for basic snow pressure. Mu.srThe distribution coefficient of the accumulated snow on the roof is 0.4 of that of the arched roof. The weight hanging load of the crops is related to the variety of the cultivated crops and the hanging mode, and W is taken out according to the uniform loadd＝0.15KN/m2。
Structural analysis:
taking the simple greenhouse with span of 9m as an example, taking length as 1m to analyze, each section of the structure adopts the arrangement form of 2 upright posts and 5 longitudinal anchor rods, and the constant load is as follows:
Wh＝0.2+0.05＝0.25KN/m2(5)
the wind load is:
Wk＝1.88*0.6*0.8*23.72/1600＝0.32 KN/m2(6)
the snow load is:
S＝0.4*0.38＝0.15 KN/m2(7)
the system bears the superposition value of various loads
W＝Wh+Wk+S +Wd＝0.87 KN/m2(8)
The supporting reaction force F provided by the greenhouse with the simple structure is 0.95KN/m2F is larger than W, and the span structure meets the stability requirement. Take the simple and easy big-arch shelter that the span is 12m as an example, each section of this structure adopts the form of arranging of 3 stands, 5 vertical stock, and the constant load is:
Wh＝0.3+0.07＝0.37KN/m2(9)
the calculation of other loads is the same as the calculation process of the 9m form, and the superposition value of all loads of the structure is
W＝Wh+Wk+ S+Wd＝0.99 KN/m2(10)
The supporting reaction force F provided by the greenhouse with the simple structure is 1.05KN/m2，F>W, the span structure meets the stability requirement.
In conclusion, in consideration of the economy and stability of the simple greenhouse, the simple greenhouse adopts an arch structure, the optimal width range is 9-12m, the corresponding height is 2-3m, the longitudinal anchor rods and the greenhouse arch frame adopt galvanized steel pipes with the diameter not less than 20mm, and the upright posts adopt galvanized steel pipes with the diameter not less than 25 mm.
Example (b):
the construction is carried out by taking a 9m wide greenhouse construction as an example, and the construction site is a bent town of Qushui county of Lasa city, and the schematic diagram is as follows. The width of the greenhouse is 9m, the height of the greenhouse is 2m, the longitudinal anchor rods and the greenhouse arch frames are made of galvanized steel pipes with the diameter of 20mm, the sleeves and the stand columns for connecting the arch frames are made of galvanized steel pipes with the diameter of 25mm, and the greenhouse can cope with extreme weather in the Tibet region in the actual application process.
The greenhouse fully exerts the light-transmitting heat-insulating property of the plastic film and the supporting property of steel on the basis of simple structure and economical manufacturing cost, and ensures the functions of wind resistance, cold resistance and the like of the greenhouse. The greenhouse is used for manually controlling the vegetation growing environment, and simultaneously, the vegetation or the suitable economic crops required by ecological restoration can be stably and efficiently cultivated by adopting a scientific management mode, so that the greenhouse has great significance for ecological restoration and agricultural production in the Qinghai-Tibet plateau area. The construction process and flow of the greenhouse become mature day by year and are widely applied to the field of national agricultural production, but due to the special geographical conditions and climatic characteristics of the Qinghai-Tibet plateau area, the existing construction experience is difficult to meet the special requirements of wind resistance, freezing resistance and the like of the area.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (4)
1. The utility model provides a simple and easy greenhouse in plateau high cold high altitude district which characterized in that:
the greenhouse comprises a plurality of transverse greenhouse arch frames (2) which are longitudinally arranged from front to back, wherein the greenhouse arch frames (2) are longitudinally connected by a plurality of longitudinal anchor rods (1) which are circumferentially and uniformly arranged, and a plastic film is arranged above the greenhouse arch frames (2);
upright columns (3) are arranged between the longitudinal anchor rods (1) which are symmetrical on two sides and the ground, and the upright columns (3) on the two sides are inserted into the center of the ground along the radial direction.
2. The simple greenhouse in plateau alpine and high-altitude areas as claimed in claim 1, characterized in that:
the greenhouse arch frame (2) and the upright posts (3) are galvanized steel pipes.
3. The simple greenhouse in plateau alpine and high-altitude areas as claimed in claim 2, characterized in that:
the upright posts (3) are arranged in the greenhouse in a crossed manner, and the bottoms of the upright posts are intersected underground.
4. The simple greenhouse in plateau alpine and high-altitude areas as claimed in claim 3, wherein:
the bottom of the upright post (3) is fixed on the embedded angle steel through a threaded nail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789814.6U CN210519598U (en) | 2019-05-29 | 2019-05-29 | Simple greenhouse in plateau high-cold high-altitude area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789814.6U CN210519598U (en) | 2019-05-29 | 2019-05-29 | Simple greenhouse in plateau high-cold high-altitude area |
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| CN210519598U true CN210519598U (en) | 2020-05-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113951009A (en) * | 2021-05-15 | 2022-01-21 | 甄暾 | Plateau pressurization glass shed |
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- 2019-05-29 CN CN201920789814.6U patent/CN210519598U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113951009A (en) * | 2021-05-15 | 2022-01-21 | 甄暾 | Plateau pressurization glass shed |
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