Steel connection structure between large-span coal shed and coal shed over coal unloading ditch, and mounting method therefor

Abstract

A steel connection structure between a large-span coal shed and a coal shed over a coal unloading ditch, and a mounting method therefor, relating to the technical field of dry coal shed renovation in coal yards of power plants. The steel connection structure between a large-span coal shed and a coal shed over a coal unloading ditch comprises a main coal shed (100); the main coal shed (100) comprises a phase I coal shed (101) and a phase II coal shed (102); shed surfaces of the phase I coal shed (101) and the phase II coal shed (102) are both symmetrically arc-shaped; end portions of the phase I coal shed (101) and the phase II coal shed (102) are connected to each other, and the shed surfaces of the phase I coal shed (101) and the phase II coal shed (102) coincide; a side coal shed (200) is mounted on one side of the phase II coal shed (102); the side coal shed (200) comprises a side shed roof (201), and a first support column (202) and a second support column (203) connected to two sides of the side shed roof (201); and one side of the side shed roof (201) is obliquely fixed to the outer shed surface of the phase II coal shed (102).

Description

A steel connection structure between a large-span coal shed and a coal unloading ditch, and its installation method. Technical Field

[0001] This invention relates to the technical field of dry coal shed renovation in power plant coal yards, and particularly to a steel connection structure between a large-span coal shed and a coal unloading ditch shed, and its installation method. Background Technology

[0002] In the coal yard renovation project, the existing parallel coal yards will be fully enclosed and renovated to build a large coal shed with a span of over 150m and a height of over 35m. A low coal shed with a height of about 9m will be built in the coal unloading ditch area. The distance between the large-span coal shed and the low coal shed in the coal unloading ditch is 7m.

[0003] Because there is a gap between the two coal sheds, coal dust inevitably spills when the coal in the large coal shed is transferred to the coal shed in the unloading ditch using a loader. Environmental protection requirements stipulate that coal-containing wastewater cannot be discharged during rainy days. Currently, the capacity of the coal-containing rainwater collection pond is too small and cannot meet the demand when there is heavy rainfall. Summary of the Invention

[0004] Given that the existing coal sheds have gaps between them, and coal chunks may spill during transportation on rainy days, easily generating coal-containing wastewater, this invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a steel connection structure between a large-span coal shed and a coal unloading ditch. This structure is compact and has a lower cost compared to building a large-span coal shed that includes a coal unloading ditch. Clean rainwater falling from the roof of the coal shed can be collected in the rainwater ditch and discharged directly, effectively avoiding environmental risks.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a steel connection structure between a large-span coal shed and a coal unloading ditch shed, comprising a main coal shed, including a first-phase coal shed and a second-phase coal shed, wherein the canopies of the first-phase coal shed and the second-phase coal shed are both symmetrically arc-shaped; the ends of the first-phase coal shed and the second-phase coal shed are connected to each other, and their canopies overlap; a side coal shed is installed on one side of the second-phase coal shed, wherein the side coal shed includes a side roof and a first pillar and a second pillar connected to both sides of the side roof; one side of the side roof is inclined and fixed to the outer canopy of the second-phase coal shed.

[0007] As a preferred embodiment of the steel connection structure between the large-span coal shed and the unloading ditch coal shed of the present invention, the first support column includes a base and a support column fixed on one side of its top, and a support step is formed between the top of the base and the support column.

[0008] As a preferred embodiment of the steel connection structure between the large-span coal shed and the unloading ditch coal shed of the present invention, wherein: the side shed roof, the first pillar, the second pillar and the ground form a right trapezoidal structure, the first pillar is the lower base of the right trapezoid, the second pillar is the upper base of the right trapezoid, the side shed roof is the sloping waist of the right trapezoid, and the ground is the right waist of the right trapezoid.

[0009] As a preferred embodiment of the steel connection structure between the large-span coal shed and the unloading ditch coal shed of the present invention, wherein: the two ends of the side shed roof section are grounding end and connecting end, the height of the grounding end is lower than the height of the connecting end; the grounding end is fixed to the ground through the second pillar, and the bottom of the connecting end is fixedly connected to the top of the support column.

[0010] As a preferred embodiment of the steel connection structure between the large-span coal shed and the unloading ditch coal shed of the present invention, wherein: the second-phase coal shed includes a second-phase shed roof and a grounding post fixed to one edge of the second-phase shed roof; the cross-sectional shape of the second-phase shed roof is symmetrical arc shape; the two ends of the cross-section of the second-phase shed roof are a base end and a docking end, the base end is fixed to the ground through the grounding post, the docking end is fixed to the top of the base, and the docking end can be placed on the supporting steps.

[0011] As a preferred embodiment of the steel connection structure between the large-span coal shed and the unloading ditch coal shed of the present invention, the base is a rectangular column structure with a length, width and height ratio of 6:4:19; the support column is a rectangular column structure with a length, width and height ratio of 10:20:83, and the bottom width of the support column is equal to the top width of the base.

[0012] As a preferred embodiment of the steel connection structure between the large-span coal shed and the unloading ditch coal shed of the present invention, wherein: the first-phase coal shed includes a first-phase shed roof and grounding posts fixed on both sides of the first-phase shed roof; the structure of the first-phase coal shed is the same as the structure of the second-phase shed roof, and the axis of the first-phase coal shed structure coincides with that of the second-phase shed roof; the axial length of the first-phase coal shed is greater than the axial length of the second-phase shed roof, and the axial length of the side shed roof is equal to the axial length of the first-phase coal shed.

[0013] As a preferred embodiment of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention, a sealing shed is also connected to the edge of the first-phase shed roof near the side coal shed.

[0014] As a preferred embodiment of the steel connection structure between the large-span coal shed and the unloading ditch coal shed of the present invention, a closed structure is fixedly connected to the openings at both ends of the first-phase coal shed and the second-phase coal shed, which are far apart from each other.

[0015] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: an installation method for a steel connection structure between a large-span coal shed and an unloading ditch coal shed, applicable to the aforementioned steel connection structure, comprising: firstly, dividing the coal yard area and the unloading ditch area into two rectangular construction sites, with the unloading ditch area located on one side of the coal yard area; secondly, pouring concrete support columns at equal intervals along the edge of the site to initially define the installation locations for the main coal shed and the side coal sheds; and thirdly, constructing the first-phase coal shed, which adopts a prestressed arch truss structure system, with cross supports set across the entire span between the six longitudinal axes. The main truss of the coal shed is in the shape of a three-centered circle, with short concrete columns supporting the lower part. One end of the gable wall is closed, and the roof is covered with corrugated steel plates. The first-phase coal shed has seven longitudinal connecting trusses that connect the main trusses and the gable wall trusses. Subsequently, the second-phase coal shed is built. The second-phase coal shed adopts a prestressed arch truss structure system, with cross bracing installed across the entire span between the six longitudinal axes. The main truss of the coal shed is shaped like a three-centered circle, with short concrete columns supporting one side at the bottom, and the other side sharing the first support column with the side coal shed. Finally, the second-phase coal shed has seven longitudinal connecting trusses that connect the main trusses and the gable wall trusses to improve the overall stability of the structure. The side coal shed adopts a flat grid structure, supported by the first and second supports around the perimeter.

[0016] The beneficial effects of this invention are:

[0017] This invention connects the main coal shed with the side coal sheds, enabling interconnection between the coal unloading area and the main coal area. This ensures convenient transfer of coal stored in the main coal shed to the truck unloading area, and eliminates environmental risks during rainy weather. Rainwater falling from the coal shed roof can be collected through rainwater ditches and discharged into the plant's drainage channel.

[0018] Furthermore, this structure adopts a combination of prestressed truss structure and flat grid structure to ensure the support stability of the coal shed, has strong load-bearing capacity, and can withstand natural disasters such as blizzards, strong winds or earthquakes. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0020] Figure 1 is a schematic diagram of the overall structure of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention.

[0021] Figure 2 is a radial sectional view of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention.

[0022] Figure 3 is a schematic diagram of the first support structure of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention. Main coal shed

[0023] Figure 4 is a schematic diagram of the side coal shed structure of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention.

[0024] Figure 5 is a schematic diagram of the second-phase coal shed structure of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention.

[0025] Figure 6 is a schematic diagram of the main coal shed connection of the steel connection structure between the large-span coal shed and the coal shed in the unloading ditch of the present invention.

[0026] Figure 7 is a schematic diagram of the load on the first support column of the present invention under a certain condition.

[0027] Figure 8 shows the standard combination shear force diagram of the first support of the present invention under this condition.

[0028] Figure 9 shows the standard combination bending moment diagram of the first support of the present invention under this condition.

[0029] Figure 10 is a standard combination axial force diagram of the first support column of the present invention under this condition.

[0030] Figure 11 shows the deformation of the first pillar of the present invention under this condition.

[0031] Figure 12 is a schematic diagram of the load on the first support of the present invention in another case.

[0032] Figure 13 is a standard combination shear force diagram of the first support of the present invention in another case.

[0033] Figure 14 is a standard combination bending moment diagram of the first support of the present invention under another condition.

[0034] Figure 15 is a standard combination axial force diagram of the first support of the present invention in another case.

[0035] Figure 16 shows the deformation of the first support column of the present invention in another case.

[0036] Figure 17 is a plan view of the pre-selected scheme A of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention.

[0037] Figure 18 is a three-dimensional diagram of the pre-selected scheme A of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention.

[0038] Figure 19 is a plan view of the pre-selected scheme B of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention.

[0039] Figure 20 is a three-dimensional diagram of the pre-selected scheme B of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention.

[0040] Figure 21 is a three-dimensional diagram of the pre-selected scheme C of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention.

[0041] Figure 22 is a flowchart of the installation sequence of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention.

[0042] Figure 23 is a schematic diagram showing the completed installation of the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention.

[0043] Figure 24 is a diagram showing the distribution of concrete piles in the steel connection structure between the large-span coal shed and the coal unloading ditch of the present invention. Detailed Implementation

[0044] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0046] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0047] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0048] Example 1

[0049] Referring to Figures 1 to 16, the first embodiment of the present invention provides a steel connection structure between a large-span coal shed and a coal unloading ditch shed, which includes a main coal shed 100, including a first-phase coal shed 101 and a second-phase coal shed 102. The shed surfaces of the first-phase coal shed 101 and the second-phase coal shed 102 are both symmetrical arc-shaped. The ends of the first-phase coal shed 101 and the second-phase coal shed 102 are connected to each other, and their shed surfaces overlap.

[0050] The side coal shed 200 is installed on one side of the second-phase coal shed 102. The side coal shed 200 includes a side shed roof 201 and a first support column 202 and a second support column 203 connected to both sides of the side shed roof 201. One side of the side shed roof 201 is inclined and fixed to the outer surface of the second-phase coal shed 102.

[0051] The main coal shed 100 is built within the coal yard area, and the side coal shed 200 is installed within the coal unloading ditch area. Preferably, the axial dimensions of the enclosed building in the coal yard area are 168m × 267m, and the axial dimensions of the enclosed building in the coal unloading ditch area are 37.5m × 125m.

[0052] Furthermore, after the coal yard is enclosed and renovated, the existing transportation system and vehicle routes will be mainly utilized, combined with existing roads and ground hardening in some areas to meet the passage of coal transport vehicles. A 4-meter coal pusher passage will be set up inside the coal yard, allowing the coal pusher to enter the coal yard from outside the building.

[0053] The first pillar 202 includes a base 202a and a support column 202b fixed to one side of its top, with a support step A formed between the top of the base 202a and the support column 202b.

[0054] The base 202a and the support column 202b are cast in one piece of concrete, with steel bars inside as the support frame. Preferably, cement of grade C35 is used to ensure the support strength.

[0055] The side roof 201, the first pillar 202, the second pillar 203 and the ground B form a right trapezoidal structure. The first pillar 202 is the lower base of the right trapezoid, the second pillar 203 is the upper base of the right trapezoid, the side roof 201 is the sloping waist of the right trapezoid, and the ground B is the right waist of the right trapezoid.

[0056] The two ends of the side canopy 201 section are grounding end 201a and connection end 201b, with the height of grounding end 201a being lower than the height of connection end 201b.

[0057] The grounding terminal 201a is fixed to the ground B through the second pillar 203, and the bottom of the connecting terminal 201b is fixedly connected to the top of the support pillar 202b.

[0058] The second-phase coal shed 102 includes a second-phase shed roof 102a and a grounding post 102b fixed to one edge of the second-phase shed roof 102a.

[0059] The cross-sectional shape of the second-phase roof 102a is symmetrical arc shape.

[0060] The two ends of the second-phase roof 102a section are the base end 102a-1 and the docking end 102a-2. The base end 102a-1 is fixed to the ground B through the grounding post 102b, and the docking end 102a-2 is fixed to the top of the base 202a. The docking end 102a-2 can be placed on the supporting step A.

[0061] Among them, the second-phase roof 102a and the side roof 201 share the first pillar 202 as a support base. The first pillar 202 supports both the second-phase roof 102a and the side roof 201. Adjacent first pillars 202 form a channel of the same star level, realizing the interconnection of the internal space of the second-phase roof 102a and the side roof 201.

[0062] Furthermore, coal transport vehicles can travel back and forth between the side coal shed 200 and the second-phase coal shed 102. Since the side shed roof 201 is installed at an angle next to the second-phase coal shed 102, when it rains or snows, snow or rainwater will slide down the arc-shaped side coal shed 200 onto the side shed roof 201 or the ground.

[0063] Furthermore, the rain and snow on the side roof 201 will slide further to the ground, preventing a large amount of rain and snow from accumulating on the second-phase roof 102a and the side roof 201.

[0064] Moreover, due to the protection of the second-phase roof 102a and the side roof 201, the coal yard area and the coal unloading ditch area are in a dry environment, so there will be no coal wastewater generated by rainwater, which will pollute the environment.

[0065] The base 202a is a rectangular columnar structure with a length, width and height ratio of 6:4:19.

[0066] The support column 202b is a rectangular column structure with a length, width and height ratio of 10:20:83. The width of the bottom surface of the support column 202b is equal to the width of the top surface of the base 202a.

[0067] Furthermore, in this embodiment, nine first support pillars 202 are preferably used to accommodate the installation of the larger-area second-phase canopy roof 102a and side canopy roof 201.

[0068] Furthermore, the length, width, and height of the base 202a are preferably 3000mm, 2000mm, and 9500mm, respectively, and the length, width, and height of the support column 202b are preferably 1200mm, 2000mm, and 8300mm, respectively.

[0069] Referring to Figures 7 to 16, the load bending of the first support column 202 under two directions of force was further simulated. The support effect of the first support column 202 at this scale fully meets the application requirements of wind resistance, snow resistance and earthquake resistance.

[0070] The first-phase coal shed 101 includes a first-phase shed roof 101a and grounding posts 102b fixed on both sides of the first-phase shed roof 101a.

[0071] Preferably, a total of twenty-one grounding posts 102b are installed on the side of the first-phase roof 101a and the second-phase roof 102a away from the side roof 201, with nine posts installed on the second-phase roof 102a and twelve posts installed on the first-phase roof 101a.

[0072] Furthermore, the distance between the two grounding posts 102b located at the connection between the first-phase roof 101a and the second-phase roof 102a must be less than the distance between other grounding posts 102b, preferably about one-third of the distance between other grounding posts 102b.

[0073] The structure of the first-phase coal shed 101 is the same as the structure of the second-phase shed roof 102a, and the axis of the first-phase coal shed 101 coincides with that of the second-phase shed roof 102a.

[0074] The axial length of the first-phase coal shed 101 is greater than the axial length of the second-phase shed roof 102a, while the axial length of the side shed roof 201 is equal to the axial length of the first-phase coal shed 101.

[0075] The first phase of the shed roof 101a is connected to a sealed shed 101b on the edge of the side coal shed 200. The bottom of the sealed shed 101b is also fixed to the ground by twelve grounding posts 102b.

[0076] A closed structure C is fixedly connected to the openings at the two ends of the primary coal shed 101 and the secondary coal shed 102, which are far apart from each other. The closed structure C is the main support for the ends of the primary coal shed 101 and the secondary coal shed 102, ensuring the overall stability of the main coal shed 100.

[0077] Example 2

[0078] Referring to Figures 1-16 and 22-24, this is the second embodiment of the present invention. This embodiment differs from the first embodiment in that it provides an installation method for a steel connection structure between a large-span coal shed and an unloading ditch coal shed. This method is applied to the steel connection structure between the large-span coal shed and the unloading ditch coal shed in the above embodiment and includes the following steps:

[0079] S1: First, divide the coal yard area and the coal unloading ditch area into two rectangular construction sites. The coal unloading ditch area is located on one side of the coal yard area. Concrete support columns are poured at equal intervals along the edge of the site to initially divide the installation sites for the main coal shed 100 and the side coal shed 200.

[0080] S2: The first phase coal shed 101 adopts a prestressed arch truss structure system. Cross supports are set in the entire span between the six longitudinal axes. The main truss of the coal shed is in the shape of a three-centered circle. The lower part is supported by short concrete columns. One end of the gable wall is closed. The roof is covered with color steel plate. The first phase coal shed 101 has 7 long connecting trusses arranged longitudinally to connect the main trusses and gable wall trusses.

[0081] Furthermore, the preferred span of the enclosed structure of the first-phase coal shed 101 is 168m, the length is 125m, and the structural height is approximately 45.0m. Excluding the roof ventilation skylights, the height of the prestressed steel cables is approximately 27.8m. The main load-bearing structure consists of nine tensioned main trusses and one gable truss, with a truss spacing of 15m.

[0082] The main truss has a triangular cross-section, 4.0m wide and 3.8-5.4m thick; the gable truss has a quadrilateral cross-section, 4.0m wide and 3.8-5.4m thick.

[0083] S3: The second phase coal shed 102 adopts a prestressed arch truss structure system. Cross supports are set in the entire span between the six longitudinal axes. The main truss of the coal shed is in the shape of a three-centered circle. One side of the lower part is supported by short concrete columns, and the other side shares the first support column 202 with the side coal shed 200.

[0084] Furthermore, the enclosed coal shed structure has a span of 168m, a length of 137m, a structural height of approximately 45.0m, and a prestressed steel cable height of approximately 27.8m. The main load-bearing structure consists of eight tensioned main trusses and one gable truss, with a truss spacing of 15.5m.

[0085] The main truss has a triangular cross-section, 4.0m wide and 3.8-5.4m thick; the gable truss has a quadrilateral cross-section, 4.0m wide and 3.8-5.4m thick.

[0086] S4: The second phase coal shed 102 has seven longitudinal connecting trusses that connect the main trusses and gable trusses to improve the overall stability of the structure.

[0087] The side coal shed 200 adopts a flat grid structure, supported by the first pillar 202 and the second pillar 203 around the perimeter.

[0088] Furthermore, due to the large span of the coal yard, the horizontal thrust at the top of the lower concrete columns is large. At the same time, the height of the column above ground at the junction of the coal unloading ditch and the coal yard reaches 17.5m, and the overturning moment generated by the horizontal thrust of the support on the foundation is large. In addition, the distance from this location to the coal conveyor belt corridor below the coal unloading ditch is less than 10m, and the independent foundation cannot meet the design requirements. Therefore, this project adopts pile foundation, sinking the first support column 202, the second support column 203 and the grounding column 102b below the ground to cope with the impact of uneven vertical settlement and horizontal displacement caused by the large span of the coal shed.

[0089] The remaining structure is the same as that in Example 1.

[0090] Example 3

[0091] Referring to Figures 1 to 24, this is the third embodiment of the present invention. This embodiment differs from the second embodiment in that it provides a first pre-selected scheme for the steel connection structure between the large-span coal shed and the coal unloading ditch. The pre-selected scheme A includes a main coal shed 100, which includes a first-phase coal shed 101 and a second-phase coal shed 102. The surfaces of both the first-phase coal shed 101 and the second-phase coal shed 102 are symmetrical arc-shaped. The ends of the first-phase coal shed 101 and the second-phase coal shed 102 are connected to each other.

[0092] Furthermore, the first-phase coal shed 101 and the second-phase coal shed 102 are connected to the corresponding coal unloading ditch to form an "L"-shaped shed without any pillars in the middle.

[0093] Referring to Figures 17 and 18, preferably, in this embodiment, the radial width of the second-phase coal shed 102 is greater than the radial width of the first-phase coal shed 101. The length of the first-phase coal shed 101 is preferably 124m, the span is 207m, and the coal yard and unloading ditch are connected as one unit. The length of the second-phase coal shed 102 is preferably 141m, the span is 171m, and a structural joint is set at the connection between the left and right parts. The total building area is 49,776 square meters.

[0094] Furthermore, the enclosed coal yard and the underground trestle of the coal unloading trench are connected together, and the above-ground and underground buildings are interconnected. The fire compartments cannot completely separate the above-ground and underground buildings, which poses a problem for fire protection.

[0095] Option A has the following advantages and disadvantages: its advantages are large space, no support columns, suitability for coal yard operation, and large storage capacity.

[0096] The disadvantages are that the maximum span is 207 meters and the shape is irregular, which significantly increases the amount of steel used in the structure, resulting in high foundation costs. The foundation excavation area adjacent to the coal unloading ditch is large, and the construction may affect the existing coal unloading ditch.

[0097] The remaining structure is the same as that in Example 2.

[0098] Example 4

[0099] Referring to Figures 1 to 24, this is the fourth embodiment of the present invention. This embodiment differs from the third embodiment in that it provides a second pre-selected scheme for the steel connection structure between the large-span coal shed and the coal unloading ditch. Pre-selected scheme B includes a main coal shed 100, which includes a first-phase coal shed 101 and a second-phase coal shed 102. The surfaces of both the first-phase coal shed 101 and the second-phase coal shed 102 are symmetrical arc-shaped. The ends of the first-phase coal shed 101 and the second-phase coal shed 102 are connected to each other, and their surfaces overlap.

[0100] The side coal shed 200 is installed on one side of the second-phase coal shed 102. The side coal shed 200 includes a side shed roof 201 and a first support column 202 and a second support column 203 connected to both sides of the side shed roof 201.

[0101] Referring to Figures 19 and 20, the side coal shed 200 is installed on one side of the second-phase coal shed 102. The pre-selected scheme B has the following advantages and disadvantages: the advantage is that the unloading ditch is connected to the coal yard, the storage capacity is large, the spacing between the intermediate support columns exceeds 10 meters, vehicles can pass through normally, and the operation is more convenient.

[0102] The disadvantages are that the central concrete support column is relatively high, the amount of concrete work is slightly large, the overall enclosed area exceeds 50,000 square meters, and fire safety inspection is more troublesome.

[0103] Compared to Embodiment 1, in this embodiment, the side roof 201 of the side coal shed 200 is set horizontally, that is, the side coal shed 200 and the edge of the second-phase coal shed 102 are at the same height, which makes construction less difficult.

[0104] The remaining structure is the same as that in Example 1.

[0105] Example 5

[0106] Referring to Figures 1 to 24, this is the fifth embodiment of the present invention. This embodiment differs from the fourth embodiment in that it provides a third pre-selected scheme for the steel connection structure between the large-span coal shed and the coal unloading ditch. Pre-selected scheme C includes a main coal shed 100, which includes a first-phase coal shed 101 and a second-phase coal shed 102. The surfaces of both the first-phase coal shed 101 and the second-phase coal shed 102 are symmetrical arc-shaped. The ends of the first-phase coal shed 101 and the second-phase coal shed 102 are connected to each other, and their surfaces overlap.

[0107] The side coal shed 200 is installed on one side of the second-phase coal shed 102. The side coal shed 200 includes a side shed roof 201 and a first support column 202 and a second support column 203 connected to both sides of the side shed roof 201.

[0108] Referring to Figure 21, in this scheme, the main coal shed 100 and the side coal shed 200 are completely separated, while the preliminary schemes A, B and the final scheme are all fitted together.

[0109] The advantages of alternative scheme C are that the coal unloading trench and coal shed are independently enclosed, the cost is lower, and the fire protection requirements are met.

[0110] The disadvantage is that there is a fire lane between the coal shed and the unloading ditch, which has a significant impact on coal storage in the coal yard and makes vehicle operation inconvenient.

[0111] The remaining structure is the same as that in Example 4.

[0112] In summary, compared with preliminary solutions A, B and C, the final solution of this invention, under the same construction area, not only solves the problems of high cost and construction difficulty, but also takes into account fire safety, improves the wind and snow resistance of the coal shed, and effectively avoids environmental risks.

[0113] It should be noted that the specific dimensions and quantity of the structures in this invention are designed only for specific scenarios of each embodiment. For sites of other sizes, they can be changed as appropriate.

[0114] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A steel connection structure between a large-span coal shed and a coal unloading ditch shed, characterized in that: include, The main coal shed (100) includes a first-phase coal shed (101) and a second-phase coal shed (102), the surfaces of the first-phase coal shed (101) and the second-phase coal shed (102) are both symmetrical arc-shaped; The ends of the first-phase coal shed (101) and the second-phase coal shed (102) are connected to each other, and their surfaces overlap. A side coal shed (200) is installed on one side of the second-phase coal shed (102). The side coal shed (200) includes a side shed roof (201) and a first pillar (202) and a second pillar (203) connected to both sides of the side shed roof (201). The side roof (201) is fixed on one side at an angle to the outer surface of the second-phase coal shed (102).

2. The steel connection structure between the large-span coal shed and the unloading ditch coal shed according to claim 1, characterized in that: The first support column (202) includes a base (202a) and a support column (202b) fixed to one side of its top, wherein a support step (A) is formed between the top of the base (202a) and the support column (202b).

3. The steel connection structure between the large-span coal shed and the coal unloading ditch coal shed according to claim 2, characterized in that: The side roof (201), the first pillar (202), the second pillar (203), and the ground (B) form a right trapezoidal structure. The first pillar (202) is the lower base of the right trapezoid, the second pillar (203) is the upper base of the right trapezoid, the side roof (201) is the sloping waist of the right trapezoid, and the ground (B) is the right waist of the right trapezoid.

4. The steel connection structure between the large-span coal shed and the unloading ditch coal shed according to claim 3, characterized in that: The two ends of the cross-section of the side canopy (201) are a grounding end (201a) and a connecting end (201b), and the height of the grounding end (201a) is lower than the height of the connecting end (201b); The grounding terminal (201a) is fixed to the ground (B) via the second support column (203), and the bottom of the connecting terminal (201b) is fixedly connected to the top of the support column (202b).

5. The steel connection structure between the large-span coal shed and the coal unloading ditch coal shed according to any one of claims 2 to 4, characterized in that: The second-phase coal shed (102) includes a second-phase shed roof (102a) and a grounding post (102b) fixed to one edge of the second-phase shed roof (102a); The cross-sectional shape of the second-phase roof (102a) is a symmetrical arc shape; The two ends of the cross section of the second-phase roof (102a) are a base end (102a-1) and a docking end (102a-2). The base end (102a-1) is fixed to the ground (B) through a grounding post (102b). The docking end (102a-2) is fixed to the top of the base (202a) and can be placed on the supporting steps (A).

6. The steel connection structure between the large-span coal shed and the unloading ditch coal shed according to claim 5, characterized in that: The base (202a) is a rectangular columnar structure with a length, width and height ratio of 6:4:19; The support column (202b) is a rectangular column structure with a length, width and height ratio of 10:20:

83. The width of the bottom surface of the support column (202b) is equal to the width of the top surface of the base (202a).

7. The steel connection structure between the large-span coal shed and the unloading ditch coal shed according to claim 6, characterized in that: The first-phase coal shed (101) includes a first-phase shed roof (101a) and grounding posts (102b) fixed on both sides of the first-phase shed roof (101a); The structure of the first-phase coal shed (101) is the same as that of the second-phase roof (102a), and the axis of the first-phase coal shed (101) coincides with that of the second-phase roof (102a). The axial length of the first-phase coal shed (101) is greater than the axial length of the second-phase shed roof (102a), and the axial length of the side shed roof (201) is equal to the axial length of the first-phase coal shed (101).

8. The steel connection structure between the large-span coal shed and the unloading ditch coal shed according to claim 7, characterized in that: The first-phase roof (101a) is also connected to a sealed shed (101b) on the edge of the side coal shed (200).

9. The steel connection structure between the large-span coal shed and the coal unloading ditch coal shed according to any one of claims 6 to 8, characterized in that: The openings at the two ends of the first-phase coal shed (101) and the second-phase coal shed (102) that are far apart from each other are also fixedly connected to a closed structure (C).

10. A method for installing a steel connection structure between a large-span coal shed and a coal unloading ditch shed, characterized in that: The steel connection structure between the large-span coal shed and the unloading ditch coal shed as described in any one of claims 1 to 9 includes, First, the coal yard area and the coal unloading ditch area are divided into two rectangular construction sites. The coal unloading ditch area is located on one side of the coal yard area. Concrete support columns are poured at equal intervals along the edge of the site to initially divide the installation sites of the main coal shed (100) and the side coal shed (200). Then, the first phase coal shed (101) was built. The first phase coal shed (101) adopts a prestressed arch truss structure system. Cross supports are set in the entire span between the six longitudinal axes. The main truss of the coal shed is in the shape of a three-centered circle. The lower part is supported by short concrete columns. One end of the gable wall is closed. The roof is covered with color steel plate. The first phase coal shed (101) has seven long connecting trusses arranged longitudinally to connect the main trusses and the gable wall trusses. Subsequently, the second phase coal shed (102) was built. The second phase coal shed (102) adopts a prestressed arch truss structure system. Cross supports are set in the entire span between the six longitudinal axes. The main truss of the coal shed is in the shape of a three-centered circle. One side of the lower part is supported by a short concrete column, and the other side shares the first column (202) with the side coal shed (200). Finally, the second-phase coal shed (102) has seven longitudinal connecting trusses that connect the main trusses and gable trusses to improve the overall stability of the structure. The side coal shed (200) adopts a flat grid structure and is supported by the first pillar (202) and the second pillar (203) around it.

Images