Large-span coal shed and coal unloading ditch coal shed steel connecting structure and mounting method thereof

Abstract

The invention discloses a large-span coal shed and coal unloading ditch coal shed steel connection structure and an installation method thereof, and relates to the technical field of power plant coal yard dry coal shed renovation, the large-span coal shed and coal unloading ditch coal shed steel connection structure comprises a main coal shed including a first-stage coal shed and a second-stage coal shed, and shed surfaces of the first-stage coal shed and the second-stage coal shed are in symmetrical arc shapes; the end parts of the first-stage coal shed and the second-stage coal shed are connected with each other, and the shed surfaces coincide; the side coal shed is installed on one side of the second-stage coal shed and comprises a side shed roof, a first supporting column and a second supporting column, and the first supporting column and the second supporting column are connected to the two sides of the side shed roof; and one side of the side shed roof is obliquely fixed on the outer shed surface of the second-stage coal shed. The problem that coal-containing sewage is easily generated if coal briquettes are scattered in the coal conveying process in rainy days due to the fact that gaps exist between existing coal sheds is solved, and the coal shed has high loading capacity and can resist natural disasters such as snow storm, strong wind or earthquakes.

Description

Technical Field

[0001] The invention relates to the technical field of dry coal shed reconstruction in a coal yard of a power plant, and in particular to a steel connection structure of a large-span coal shed and a coal unloading ditch coal shed and an installation method thereof. Background Art

[0002] In the coal yard transformation into a fully enclosed coal shed project, the existing parallel-arranged coal yards will be fully enclosed and transformed 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] Due to the distance between the two coal sheds, coal dust will inevitably spill when the coal in the large coal shed is transferred to the coal unloading ditch coal shed by a loader. Environmental protection requirements on rainy days require that coal-containing wastewater cannot be discharged. At present, the capacity of the coal-containing rainwater collection pool is relatively small and cannot meet the demand when there is heavy rainfall. Summary of the invention

[0004] In view of the fact that there are gaps between the existing coal sheds, if coal blocks are scattered during coal transportation on rainy days, coal-containing sewage is likely to be generated, and the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a steel connection structure between a large-span coal shed and a coal unloading ditch. The structure is compact and has lower cost than building a large-span coal shed including a coal unloading ditch. The clean rainwater falling from the roof of the coal shed is collected through the rainwater ditch and can be directly discharged, effectively avoiding environmental risks.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a steel connection structure of a large-span coal shed and a coal unloading ditch coal shed, which includes a main coal shed, including a first-phase coal shed and a second-phase coal shed, and the roof surfaces of the first-phase coal shed and the second-phase coal shed are both symmetrical arc-shaped; the ends of the first-phase coal shed and the second-phase coal shed are connected to each other, and the roof surfaces of the two overlap; a side coal shed, which is installed on one side of the second-phase coal shed, and the side coal shed includes a side shed roof and a first pillar and a second pillar connected on both sides of the side shed roof; one side of the side shed roof is tilted and fixed on the outer shed surface of the second-phase coal shed.

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

[0008] As a preferred solution of the steel connection structure of the large-span coal shed and the coal 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-angled trapezoidal structure, the first pillar is the lower base of the right-angled trapezoid, the second pillar is the upper base of the right-angled trapezoid, the side shed roof is the slanted waist of the right-angled trapezoid, and the ground is the right-angled waist of the right-angled trapezoid.

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

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

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

[0012] As a preferred solution of the steel connection structure of a large-span coal shed and a coal unloading ditch coal shed of the present invention, wherein: the first-phase coal shed includes a first-phase shed roof and grounding columns fixed on the two side edges 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 the axis 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 solution of the steel connection structure of the large-span coal shed and the coal unloading ditch coal shed of the present invention, a sealing shed is also connected to the edge of one side of the first-stage shed roof close to the side coal shed.

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

[0015] In order to solve the above technical problems, the present invention also provides the following technical solutions: a method for installing a steel connection structure between a large-span coal shed and a coal unloading ditch coal shed, which is applied to the above-mentioned steel connection structure between a large-span coal shed and a coal unloading ditch coal shed, comprising firstly dividing 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, and concrete support columns are poured at equal distances along the edge of the site to preliminarily divide the installation sites of the main coal shed and the side coal shed; then, a first-phase coal shed is built, the first-phase coal shed adopts a prestressed arch truss structure system, cross supports are set in the full span between the six longitudinal axes, the main truss of the coal shed is in the shape of a three-center circle, and the lower part is supported by short concrete columns. The gable at one end is closed and the roof is covered with color steel plates. The first-phase coal shed is longitudinally arranged with seven full-length connecting trusses to connect the main trusses and gable trusses; then, the second-phase coal shed is built. The second-phase coal shed adopts a prestressed arch truss structure system, and cross supports are set in the full span between the six longitudinal axes. The main truss of the coal shed is in the shape of a three-center circle, one side of the lower part is supported by a short concrete column, and the other side shares the first pillar with the side coal shed; finally, the second-phase coal shed is longitudinally arranged with seven full-length connecting trusses to connect the main trusses and gable trusses to improve the overall stability of the structure; the side coal shed adopts a flat grid structure supported by the surrounding first and second pillars.

[0016] Beneficial effects of the present invention:

[0017] The present invention connects the main coal shed with the side coal shed to realize the interconnection between the coal unloading ditch area and the main coal area, which can ensure that the stored coal in the main coal shed is conveniently transported to the automobile coal unloading ditch, and there is no environmental risk in rainy weather. Rainwater falling from the coal shed roof can be collected into the factory flood discharge channel through the rainwater ditch for external discharge.

[0018] In addition, this structure adopts a combination of prestressed truss structure and flat grid structure to ensure the supporting stability of the coal shed, has a strong load-bearing capacity, and can withstand natural disasters such as blizzards, strong winds or earthquakes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

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

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

[0022] Figure 3This 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 coal shed of the present invention.

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

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

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

[0026] Figure 7 It is a schematic diagram of the load of the first pillar of the present invention under a certain condition.

[0027] Figure 8 This is the standard combined shear force diagram of the first pillar of the present invention under this condition.

[0028] Fig. 9 Graph 4 is the standard combined bending moment diagram of the first support column of the present invention under this condition.

[0029] Fig.10 This is the standard combined axial force diagram of the first pillar of the present invention in this case.

[0030] Fig.11 This is a diagram showing the deformation of the first support column of the present invention under such circumstances.

[0031] Fig.12 FIG. 4 is a schematic diagram of the load on the first pillar of the present invention under another condition.

[0032] Fig.13 This is the standard combined shear force diagram of the first pillar of the present invention under another condition.

[0033] Fig.14 It is the standard combined bending moment diagram of the first pillar of the present invention under another condition.

[0034] Fig.15 It is the standard combined axial force diagram of the first pillar of the present invention under another condition.

[0035] Fig.16 This is a diagram showing the deformation of the first pillar of the present invention under another condition.

[0036] Fig.17 It is a plan view of the preselected scheme A of the steel connection structure of the large-span coal shed and the coal unloading ditch coal shed of the present invention.

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

[0038] Fig.19 It is a plan view of the preselected scheme B of the steel connection structure of the large-span coal shed and the coal unloading ditch coal shed of the present invention.

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

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

[0041] Fig. 22 The invention provides a block diagram of the installation sequence of the method for installing the steel connection structure between the large-span coal shed and the coal unloading ditch coal shed.

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

[0043] Fig.24 This is a distribution diagram of concrete piles for the steel connection structure between the large-span coal shed and the coal unloading ditch coal shed of the present invention. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present 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 term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0047] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0048] Example 1

[0049] Reference Figures 1 to 16, which is the first embodiment of the present invention, provides a large-span coal shed and coal unloading ditch coal shed steel connection structure, which includes a main coal shed 100, including a first-phase coal shed 101 and a second-phase coal shed 102, and 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 the shed surfaces of the two 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 202 and a second support 203 connected on both sides of the side shed roof 201. One side of the side shed roof 201 is tilted and fixed on the outer shed surface of the second phase coal shed 102.

[0051] Among them, the main coal shed 100 is built in the coal yard area, and the side coal shed 200 is installed in the coal unloading ditch area. Preferably, the axis size of the closed building in the coal yard area of ​​the coal shed is 168m×267m, and the axis size of the closed building in the coal unloading ditch area is 37.5m×125m.

[0052] Furthermore, after the coal yard is closed and renovated, it will mainly utilize the existing transportation system and vehicle routes, and combine the existing roads and the hardened ground 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, and the coal pusher can 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 the top thereof, and a support step A is formed between the top of the base 202a and the support column 202b.

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

[0055] A right-angled trapezoidal structure is formed between the side shed roof 201, the first pillar 202, the second pillar 203 and the ground B. The first pillar 202 is the lower base of the right-angled trapezoid, the second pillar 203 is the upper base of the right-angled trapezoid, the side shed roof 201 is the slanted waist of the right-angled trapezoid, and the ground B is the right waist of the right-angled trapezoid.

[0056] The two ends of the cross section of the side shed roof 201 are a grounding end 201a and a connecting end 201b, and the height of the grounding end 201a is lower than that of the connecting end 201b.

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

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

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

[0060] The two ends of the cross section of the second phase roof 102a 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 column 102b, and the docking end 102a-2 is fixed to the top of the base 202a, and the docking end 102a-2 can be placed on the support step A.

[0061] Among them, the second-phase roof 102a and the side roof 201 share the first pillar 202 as a supporting base. The first pillar 202 supports the second-phase roof 102a and the side roof 201 at the same time, and a same-star channel is formed between adjacent first pillars 202 to achieve 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, and since the side shed roof 201 is installed sideways next to the second phase coal shed 102, when it rains or snows, the accumulated snow or rainwater will slide along the curved side coal shed 200 to the side shed roof 201 or the ground.

[0063] Furthermore, the rain and snow on the side shed roof 201 will further slide down to the ground, thus preventing a large amount of rain and snow from accumulating above the second-phase shed roof 102a and the side shed 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, and coal sewage will not be generated due to rainwater, thereby polluting the environment.

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

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

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

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

[0069] Reference Figure 7 to Figure 16, further simulating the load bending of the first pillar 202 under forces in two directions. The supporting effect of the first pillar 202 at this ratio 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 to both side edges of the first-phase shed roof 101a.

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

[0072] Furthermore, the distance between the two grounding posts 102b at the connection between the first-phase roof 101a and the second-phase roof 102a needs to be smaller than the distance between other grounding posts 102b, and preferably is approximately one-third of the distance between other grounding posts 102b.

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

[0074] 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.

[0075] The edge of the first-phase roof 101a close to the side coal shed 200 is also connected to a sealing shed 101b, and the bottom of the sealing shed 101b is also fixed to the ground through twelve grounding columns 102b.

[0076] A closed structure C is fixedly connected to the openings at both ends of the first-phase coal shed 101 and the second-phase coal shed 102 which are far away from each other. The closed structure C is the supporting body of the ends of the first-phase coal shed 101 and the second-phase coal shed 102 to ensure the overall stability of the main coal shed 100.

[0077] Example 2

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

[0079] S1: 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 distances along the edge of the site to preliminarily divide the installation sites of 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, with cross supports set up in the full span between the six longitudinal axes. The main truss of the coal shed is in the shape of a three-center circle, supported by short concrete columns at the bottom, one end is closed by a gable, and the roof is covered with color steel plates. The first phase coal shed 101 is longitudinally arranged with 7 full-length connecting trusses to connect the main trusses and gable trusses.

[0081] Furthermore, the span of the closed structure of the first phase coal shed 101 is preferably 168m, the length is 125m, the structure height is about 45.0m, excluding the roof ventilation skylight, and the height of the prestressed steel cable is about 27.8m. The main force-bearing structure consists of nine 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 to 5.4m thick; the gable truss has a quadrilateral cross-section, 4.0m wide and 3.8 to 5.4m thick.

[0083] S3: The second phase coal shed 102 adopts a prestressed arch truss structure system, with cross supports set up in the full span between the six longitudinal axes. The main truss of the coal shed is in the shape of a three-center circle, with one side of the lower part supported by a short concrete column and the other side sharing the first support column 202 with the side coal shed 200.

[0084] Furthermore, the coal shed closed 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 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 to 5.4m thick; the gable truss has a quadrilateral cross-section, 4.0m wide and 3.8 to 5.4m thick.

[0086] S4: The second phase coal shed 102 is longitudinally arranged with seven through-length connecting trusses to 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 and is supported by a first support column 202 and a second support column 203 at the periphery.

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

[0089] The remaining structures are the same as those of Example 1.

[0090] Example 3

[0091] Reference Figure 1 to Figure 24 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: it provides a first preselected scheme for a steel connection structure of a large-span coal shed and a coal unloading ditch coal shed. The preselected scheme A includes a main coal shed 100, including 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.

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

[0093] Reference Fig.17 and Fig.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 the coal unloading ditch are connected as one; 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, with a total construction area of ​​49,776 square meters.

[0094] Furthermore, the closed coal yard and the underground walkway of the coal unloading ditch are connected together, the above-ground buildings and underground buildings are interconnected, and the building fire zoning cannot completely separate the above-ground buildings and underground buildings, resulting in problems with fire protection.

[0095] Pre-selected option A has the following advantages and disadvantages: The advantages are large space, no supporting columns, suitable for coal yard operation, and large storage capacity.

[0096] The disadvantages are that the maximum span is 207 meters and it is an irregular shape. The amount of structural steel is significantly increased, the foundation cost is high, 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 of Example 2.

[0098] Example 4

[0099] Reference Figure 1 to Figure 24 , which is the fourth embodiment of the present invention. This embodiment is different from the third embodiment in that it provides a second pre-selected scheme for a steel connection structure of a large-span coal shed and a coal unloading ditch coal shed. The pre-selected scheme B 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 the shed surfaces of the two 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] Reference Fig.19 and Fig. 20 The side coal shed 200 is installed on one side of the second phase coal shed 102. The pre-selected plan B has the following advantages and disadvantages: The advantage is that the coal unloading ditch is connected with the coal yard as one, the storage capacity is large, the distance between the middle support columns exceeds 10 meters, vehicles can pass normally, and the operation is more convenient.

[0102] The disadvantages are that the middle concrete support column is relatively high, the concrete engineering volume is slightly large, the overall enclosed area exceeds 50,000 square meters, and the fire inspection is more troublesome.

[0103] Compared with Example 1, further, in this embodiment, the side shed roof 201 of the side coal shed 200 is horizontally arranged, that is, the side coal shed 200 is flush with the side edge height of the second-phase coal shed 102, and the construction difficulty is relatively small.

[0104] The remaining structures are the same as those of Example 1.

[0105] Example 5

[0106] Reference Figure 1 to Figure 24 , which is the fifth embodiment of the present invention. This embodiment is different from the fourth embodiment in that: it provides a third pre-selected scheme for a steel connection structure of a large-span coal shed and a coal unloading ditch coal shed. The pre-selected scheme C 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 the shed surfaces of the two 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] Reference Fig.21 In this solution, the main coal shed 100 is completely separated from the side coal shed 200, while the preliminary solutions A, B and the final solution are all fitted together.

[0109] The advantages of Plan C are that the coal unloading ditch and coal shed are independently enclosed, the cost is relatively low, and the fire protection meets the requirements.

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

[0111] The remaining structures are the same as those of Example 4.

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

[0113] It should be noted that the specific sizes and quantities of the structures in the present invention are only designed for specific scenarios of each embodiment, and can be changed as appropriate for venues of other sizes.

[0114] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in 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, characterized in that: include, The main coal shed (100) comprises a first-phase coal shed (101) and a second-phase coal shed (102), wherein the surfaces of the first-phase coal shed (101) and the second-phase coal shed (102) are both symmetrical arc-shaped; The first-phase coal shed (101) and the second-phase coal shed (102) are connected to each other at their ends, and their shed surfaces overlap; A side coal shed (200) is installed on one side of the second-phase coal shed (102), wherein 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 both sides of the side shed roof (201); One side of the side shed roof (201) is tilted and fixed on the outer shed surface of the second-phase coal shed (102).

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

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

4. The large-span coal shed and coal unloading ditch coal shed steel connection structure according to claim 3 is characterized by: The two ends of the cross section of the side shed roof (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 end (201a) is fixed to the ground (B) via a second support column (203), and the bottom of the connecting end (201b) is fixedly connected to the top of the supporting column (202b).

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

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

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

7. The large-span coal shed and coal unloading ditch coal shed steel connection structure according to claim 6 is characterized by: The first-stage coal shed (101) comprises a first-stage shed roof (101a) and grounding posts (102b) fixed to the edges of both sides of the first-stage shed roof (101a); 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) and the second-phase shed roof (102a) coincides; 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 large-span coal shed and coal unloading ditch coal shed steel connection structure according to claim 7 is characterized by: The edge of the first-stage shed roof (101a) close to the side coal shed (200) is also connected to a sealing shed (101b).

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

10. A method for installing a steel connection structure between a large-span coal shed and a coal unloading ditch, characterized in that: The large-span coal shed and coal unloading ditch coal shed steel connection structure applied to any one of claims 1 to 9 comprises: 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 distances along the edge of the site to preliminarily divide the installation sites of the main coal shed (100) and the side coal shed (200); Then, a first-phase coal shed (101) is built. The first-phase coal shed (101) adopts a prestressed arch truss structure system. Cross supports are arranged in the full span between the six longitudinal axes. The main truss of the coal shed is in the shape of a three-center circle. The lower part is supported by short concrete columns. One end is closed by a gable. The roof is covered with a color steel plate. Seven through-length connecting trusses are arranged longitudinally in the first-phase coal shed (101) to connect the main trusses and the gable trusses. Subsequently, a second-phase coal shed (102) is constructed. The second-phase coal shed (102) adopts a prestressed arch truss structure system. Cross supports are arranged in the full span between the six longitudinal axes. The main truss of the coal shed is in the shape of a three-center circle. One side of the lower part is supported by a concrete short column, and the other side shares the first support column (202) with the side coal shed (200); Finally, the second phase coal shed (102) is longitudinally arranged with seven through-length connecting trusses to 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 a first support column (202) and a second support column (203) on the periphery.

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