Modularized large-span steel structure

Abstract

The utility model discloses a modularized large-span steel structure, which belongs to the technical field of building industry and comprises a first building upright post and a second building upright post, a lower steel structure plate is arranged on the first building upright post, an upper steel structure plate is arranged on the first building upright post, and the lower steel structure plate is connected with the second building upright post. The upper steel structure plate is connected with a second building stand column, an arc-shaped plate is arranged between the upper steel structure plate and the lower steel structure plate, and the connecting mechanism comprises an abutting arc plate abutting against the inner arc face of the arc-shaped plate, a first connecting plate arranged on the top face of the abutting arc plate, a second connecting plate arranged beside the first connecting plate and a positioning plate arranged on the top face of the upper steel structure plate. The second connecting plate is arranged on the top face of the abutting arc plate, the positioning plate is connected with the first connecting plate through a screw, and the positioning plate is connected with the second connecting plate through a screw. The arch structure has the effects that the possibility that the middle of the arch structure sinks is reduced, and the service life of the steel structure in the arch structure is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building industry especially relates to a modular large-span steel structure. BACKGROUND

[0002] Modular steel structure refers to the steel structure composed of standardized parts processed in the factory, which can be quickly spliced together to form a building structure, and the pre-manufactured module assembly is quickly assembled on site to reduce the on-site construction time and cost, and improve the building quality and design flexibility.

[0003] The arch structure is widely used in the building industry because it can span a larger space, and the arch structure has the best bearing capacity in geometry, which can decompose the load into compressive stress and reduce the tensile stress in the structure, and is suitable for occasions that need to bear heavy load, but the arch structure is prone to the problem of sinking in the middle, thereby reducing the service life of the steel structure.

[0004] In view of the above related technology, it is urgent to design and develop a modular large-span steel structure to reduce the possibility of arch structure sinking in the middle and improve the service life of the steel structure in the arch structure. INVENTION CONTENTS

[0005] In order to reduce the possibility of arch structure sinking in the middle and improve the service life of the steel structure in the arch structure, the application provides a modular large-span steel structure.

[0006] The application provides a modular large-span steel structure using the following technical scheme:

[0007] A modular large-span steel structure, comprising a first building column and a second building column arranged beside the first building column, a lower steel structure plate is arranged on the first building column, an upper steel structure plate is arranged on the first building column, the upper steel structure plate is located above the lower steel structure plate, the lower steel structure plate is connected with the second building column, the upper steel structure plate is connected with the second building column, an arc-shaped plate is arranged between the upper steel structure plate and the lower steel structure plate, the arc-shaped plate is concave downward, the middle part of the arc-shaped plate is located in the middle part of the bottom surface of the upper steel structure plate, a connecting mechanism is arranged between the arc-shaped plate and the upper steel structure plate, the connecting mechanism comprises an abutting arc plate abutting with the inner arc surface of the arc-shaped plate, a first connecting plate arranged on the top surface of the abutting arc plate, a second connecting plate arranged beside the first connecting plate, and a positioning plate arranged on the top surface of the upper steel structure plate, the second connecting plate is arranged on the top surface of the abutting arc plate, the positioning plate and the first connecting plate are connected through screws, and the positioning plate and the second connecting plate are connected through screws.

[0008] By adopting the technical scheme, the second building column is arranged beside the first building column, the lower steel structure plate is arranged on the first building column, the upper steel structure plate is arranged on the first building column, the upper steel structure plate is located above the lower steel structure plate, the lower steel structure plate is connected with the second building column, the upper steel structure plate is connected with the second building column, the arc-shaped plate is arranged between the upper steel structure plate and the lower steel structure plate, the arc-shaped plate is concave downward, the middle part of the arc-shaped plate is located at the middle part of the bottom surface of the upper steel structure plate, the connecting mechanism comprises the abutting arc-shaped plate, the first connecting plate, the second connecting plate and the positioning plate, the abutting arc-shaped plate abuts against the inner arc surface of the arc-shaped plate, the first connecting plate is arranged on the top surface of the abutting arc-shaped plate, the second connecting plate is arranged on the top surface of the abutting arc-shaped plate, the second connecting plate is arranged beside the first connecting plate, the positioning plate is arranged on the top surface of the upper steel structure plate, the positioning plate is connected with the first connecting plate through screws, and the positioning plate is connected with the second connecting plate through screws, so that the close connection and the fastening between the arc-shaped plate and the upper steel structure plate are improved, the possibility of the middle part of the arch structure sinking is reduced, and the service life of the steel structure in the arch structure is improved.

[0009] Preferably, a clamping groove is formed in the bottom surface of the abutting arc-shaped plate, a switching groove is formed in the top surface of the lower steel structure plate, and an adjusting mechanism is arranged between the abutting arc-shaped plate and the lower steel structure plate, the adjusting mechanism comprising a clamping block inserted into the clamping groove, a connecting pipe arranged on the bottom surface of the clamping block, and a screw rod threadedly sleeved in the connecting pipe, the screw rod being rotatably arranged in the switching groove.

[0010] By adopting the technical scheme, a clamping groove is formed in the bottom surface of the abutting arc-shaped plate, a switching groove is formed in the top surface of the lower steel structure plate, and an adjusting mechanism is arranged between the abutting arc-shaped plate and the lower steel structure plate, the adjusting mechanism comprising a clamping block inserted into the clamping groove, a connecting pipe arranged on the bottom surface of the clamping block, and a screw rod threadedly sleeved in the connecting pipe, the screw rod being rotatably arranged in the switching groove. The distance between the connecting pipe and the lower steel structure plate is adjusted by rotating the screw rod in a forward or reverse direction, so that when the middle part of the arc-shaped plate sinks, the distance between the arc-shaped plate and the lower steel structure plate can be adjusted by the screw rod to provide support for the arc-shaped plate.

[0011] Preferably, a limiting ring groove is formed in the inner side wall of the connecting pipe, and a limiting ring block is arranged on the screw rod and vertically slidably arranged in the limiting ring groove.

[0012] By adopting the technical scheme, a limiting ring groove is formed in the inner side wall of the connecting pipe, and a limiting ring block is arranged on the screw rod and vertically slidably arranged in the limiting ring groove. The limiting ring block prevents the screw rod from being separated from the connecting pipe, thereby improving the stability of the connection between the screw rod and the connecting pipe.

[0013] Preferably, a limiting groove is formed on the side wall of the adapter groove, and a limiting block is arranged on the screw rod and rotatably arranged in the limiting groove.

[0014] By adopting the above technical scheme, the limiting groove is formed on the side wall of the adapter groove, the limiting block is arranged on the screw rod, and the limiting block is rotatably arranged in the limiting groove, thereby preventing the screw rod from being separated from the lower steel structure plate and improving the stability of the connection between the screw rod and the lower steel structure plate.

[0015] Preferably, a reinforcing mechanism is arranged between the lower steel structure plate and the arc-shaped plate, the reinforcing mechanism comprises a reinforcing plate arranged on the lower steel structure plate through a screw, a reinforcing arc plate abutting against the inner side arc surface of the arc-shaped plate, and an abutting inclined rod arranged on the reinforcing plate, the reinforcing arc plate is connected with the arc-shaped plate through a screw, and the abutting inclined rod is connected with the reinforcing arc plate.

[0016] By adopting the above technical scheme, the reinforcing plate is arranged on the lower steel structure plate, the reinforcing arc plate abuts against the inner side arc surface of the arc-shaped plate, the reinforcing arc plate is connected with the arc-shaped plate through a screw, and the abutting inclined rod is arranged on the reinforcing plate, thereby improving the support for the arc-shaped plate.

[0017] Preferably, the reinforcing mechanism comprises a first connecting strip abutting against the side surface of the arc-shaped plate, a second connecting strip abutting against the other side surface of the arc-shaped plate, a first connecting rod arranged in the arc-shaped plate, and a second connecting rod arranged in the upper steel structure plate, the first connecting rod is connected with the first connecting strip, the first connecting rod is connected with the second connecting strip, the first connecting strip abuts against the side surface of the upper steel structure plate, the first connecting strip is connected with the second connecting rod, the second connecting strip abuts against the side surface of the upper steel structure plate, and the second connecting strip is connected with the second connecting rod.

[0018] By adopting the above technical scheme, the first connecting strip abuts against the side surface of the arc-shaped plate, the first connecting strip abuts against the side surface of the upper steel structure plate, the second connecting strip abuts against the other side surface of the arc-shaped plate, the second connecting strip abuts against the side surface of the upper steel structure plate, the first connecting rod is arranged in the arc-shaped plate and connected with the first connecting strip and the second connecting strip, and the second connecting rod is arranged in the upper steel structure plate and connected with the first connecting strip and the second connecting strip, thereby improving the stability of the connection between the arc-shaped plate and the upper steel structure plate.

[0019] Preferably, the top surface of the lower steel structure plate is provided with a sliding plate, the side surface of the sliding plate is provided with a sliding groove, the top surface of the sliding plate is provided with a sliding slot, the sliding slot is communicated with the sliding groove, the top surface of the sliding plate is provided with an elastic filler block, the bottom surface of the arc-shaped plate is provided with a sliding block, the sliding block is provided with a sliding block, the arc-shaped plate abuts the side surface of the elastic filler block, the sliding block is slidingly arranged in the sliding slot, and the sliding block is slidingly arranged in the sliding groove.

[0020] By adopting the above technical scheme, the top surface of the lower steel structure plate is provided with a sliding plate, the side surface of the sliding plate is provided with a sliding groove, the top surface of the sliding plate is provided with a sliding slot, the sliding slot is communicated with the sliding groove, the top surface of the sliding plate is provided with an elastic filler block, the bottom surface of the arc-shaped plate is provided with a sliding block, the sliding block is provided with a sliding block, the arc-shaped plate abuts the side surface of the elastic filler block, the sliding block is slidingly arranged in the sliding slot, and the sliding block is slidingly arranged in the sliding groove, when the arc-shaped plate needs to be installed, the sliding block is placed in the sliding groove, the sliding block is placed in the sliding slot, the arc-shaped plate is pushed, the side surface of the arc-shaped plate abuts the elastic filler block, and the arc-shaped plate is conveniently installed.

[0021] Preferably, the bottom surface of one side of the lower steel structure plate is welded with a steel bracket one, the side surface of the steel bracket one close to the first building column is attached to the side surface of the first building column, and the steel bracket one and the first building column are connected through screws.

[0022] By adopting the above technical scheme, the bottom surface of one side of the lower steel structure plate is welded with a steel bracket one, the side surface of the steel bracket one close to the first building column is attached to the side surface of the first building column, and the steel bracket one and the first building column are connected through screws, the bottom surface of the other side of the lower steel structure plate is welded with a steel bracket two, the side surface of the steel bracket two close to the second building column is attached to the side surface of the second building column, and the steel bracket two and the second building column are connected through screws, the stability of the connection between the lower steel structure plate and the first building column is improved through the steel bracket one, and the stability of the connection between the lower steel structure plate and the second building column is improved through the steel bracket two.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. The second building column is arranged beside the first building column, the first building column is provided with a lower steel structure plate, the first building column is provided with an upper steel structure plate, the upper steel structure plate is located above the lower steel structure plate, the lower steel structure plate is connected with the second building column, the upper steel structure plate is connected with the second building column, an arc-shaped plate is arranged between the upper steel structure plate and the lower steel structure plate, the arc-shaped plate is concave downward, the middle part of the arc-shaped plate is located at the middle part of the bottom surface of the upper steel structure plate, the connecting mechanism comprises an abutting arc plate, a connecting plate one, a connecting plate two and a positioning plate, the abutting arc plate abuts with the inner arc surface of the arc-shaped plate, the connecting plate one is arranged on the top surface of the abutting arc plate, the connecting plate two is arranged on the top surface of the abutting arc plate, the connecting plate two is arranged beside the connecting plate one, the positioning plate is arranged on the top surface of the upper steel structure plate, the positioning plate is connected with the connecting plate one through screws, the positioning plate is connected with the connecting plate two through screws, the connecting relationship among the abutting arc plate, the connecting plate one, the connecting plate two and the positioning plate is improved, the tightness and the fastening of the connection between the arc-shaped plate and the upper steel structure plate are improved, the possibility of the middle part of the arch structure sinking is reduced, and the service life of the steel structure in the arch structure is improved.

[0025] 2. A clamping groove is formed in the bottom surface of the abutting arc plate, a transfer groove is formed in the top surface of the lower steel structure plate, the adjusting mechanism comprises a clamping block, a connecting pipe and a screw rod, the clamping block is inserted into the clamping groove, the connecting pipe is arranged on the bottom surface of the clamping block, the screw rod is threadedly sleeved on the connecting pipe, and the screw rod is rotationally arranged in the transfer groove. The distance between the connecting pipe and the lower steel structure plate is adjusted by rotating the screw rod in the forward direction or the reverse direction, so that when the middle part of the arc-shaped plate sinks, the distance between the arc-shaped plate and the lower steel structure plate can be adjusted by the screw rod to provide support for the arc-shaped plate.

[0026] 3. A sliding plate is arranged on the top surface of the lower steel structure plate, a sliding groove is formed in the side surface of the sliding plate, a sliding slot is formed in the top surface of the sliding plate, the sliding slot is in communication with the sliding groove, an elastic filling block is arranged on the top surface of the sliding plate, a sliding block is arranged on the bottom surface of the arc-shaped plate, the sliding block is provided with a sliding block, the arc-shaped plate abuts the side surface of the elastic filling block, the sliding block is slidingly arranged in the sliding slot, and the sliding block is slidingly arranged in the sliding groove. When it is necessary to install the arc-shaped plate, the sliding block is placed in the sliding groove, the sliding block is placed in the sliding groove, the arc-shaped plate is pushed, the side surface of the arc-shaped plate abuts the elastic filling block, and the arc-shaped plate is conveniently installed. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a modular large-span steel structure in the embodiment of the application.

[0028] Figure 2 It is a sectional view of the first building column and the lower steel structure plate in the embodiment of the application.

[0029] Figure 3is a sectional view of the abutting arc plate and the lower steel structure plate in the embodiment of the present application.

[0030] Legend:

[0031] 1, first building column; 11, lower steel structure plate; 111, adapter groove; 112, limiting groove; 12, upper steel structure plate; 13, steel bracket one; 14, steel bracket two; 15, sliding plate; 151, sliding groove; 152, sliding slot; 16, elastic filler block; 2, second building column; 3, arc plate; 31, sliding block; 32, sliding block; 4, connecting mechanism; 41, abutting arc plate; 411, clamping groove; 42, connecting plate one; 43, connecting plate two; 44, positioning plate; 5, adjusting mechanism; 51, clamping block; 52, connecting pipe; 521, limiting ring groove; 53, screw; 531, limiting ring block; 532, limiting block; 6, reinforcing mechanism; 61, reinforcing plate; 62, reinforcing arc plate; 63, abutting inclined rod; 64, connecting strip one; 65, connecting strip two. DETAILED DESCRIPTION

[0032] The following will be described in detail below Figures 1-3 The present application will be further described in detail.

[0033] The embodiment of the present application discloses a modular large-span steel structure, referring to Figure 1 A modular large-span steel structure includes a first building column 1, a second building column 2, an arc plate 3, a connecting mechanism 4, an adjusting mechanism 5 and a reinforcing mechanism 6, the first building column 1 is horizontally arranged, the length direction of the first building column 1 is perpendicular to the ground, the second building column 2 is horizontally arranged beside the first building column 1, and the length direction of the second building column 2 is the same as that of the first building column 1.

[0034] Referring to Figure 1 The first building column 1 is provided with a lower steel structure plate 11, the length direction of the lower steel structure plate 11 is parallel to the ground, the top surface of the first building column 1 is provided with an upper steel structure plate 12, the upper steel structure plate 12 is located above the lower steel structure plate 11, and the length direction of the upper steel structure plate 12 is the same as that of the lower steel structure plate 11.

[0035] Referring to Figure 1 The lower steel structure plate 11 is connected with the second building column 2, the upper steel structure plate 12 is connected with the second building column 2, the upper steel structure plate 12 is located on the top surface of the second building column 2, a steel bracket one 13 is welded on the bottom surface of one side of the lower steel structure plate 11, the side surface of the steel bracket one 13 close to the first building column 1 is fitted with the side surface of the first building column 1, and the steel bracket one 13 is connected with the first building column 1 through a screw.

[0036] Referring to Figure 1As shown, the bottom surface of the lower steel structure plate 11 on the other side is welded with a steel bracket two 14, the side of the steel bracket two 14 close to the second building column 2 is attached to the side of the second building column 2, and the steel bracket two 14 is connected with the second building column 2 through screws. Through the steel bracket one 13, the stability of the connection between the lower steel structure plate 11 and the first building column 1 is improved, and through the steel bracket two 14, the stability of the connection between the lower steel structure plate 11 and the second building column 2 is improved.

[0037] Referring to Figure 1 and Figure 2 As shown, the arc-shaped plate 3 is arranged between the upper steel structure plate 12 and the lower steel structure plate 11, the arc-shaped plate 3 is concave downward, the middle part of the arc-shaped plate 3 is located on the middle part of the bottom surface of the upper steel structure plate 12, and the top surface of the lower steel structure plate 11 is provided with sliding plates 15. The two sliding plates 15 are symmetric about the center line of the top surface of the lower steel structure plate 11 in the length direction, the side surface of the sliding plate 15 is provided with a sliding groove 151, and the top surface of the sliding plate 15 is provided with a sliding groove 152 which is in communication with the sliding groove 151.

[0038] Referring to Figure 1 and Figure 2 As shown, the top surface of the sliding plate 15 is provided with an elastic filling block 16, the bottom surface of both ends of the arc-shaped plate 3 is provided with a sliding block 31, the sliding block 31 is provided with a sliding block 32, the side surface of the arc-shaped plate 3 abuts against the elastic filling block 16, the sliding block 31 corresponds to the sliding plate 15 one by one, the sliding block 31 is slidingly arranged in the sliding groove 152, the sliding block 32 is slidingly arranged in the sliding groove 151, and the sliding block 32 corresponds to the sliding plate 15 one by one.

[0039] Referring to Figure 1 and Figure 2 As shown, when it is necessary to install the arc-shaped plate 3, the sliding block 32 is placed in the sliding groove 151, the sliding block 31 is placed in the sliding groove 152, the arc-shaped plate 3 is pushed, the side surface of the arc-shaped plate 3 abuts against the elastic filling block 16, and the arc-shaped plate 3 is conveniently installed.

[0040] Referring to Figure 1 As shown, the connecting mechanism 4 comprises an abutting arc plate 41, a connecting plate one 42, a connecting plate two 43 and a positioning plate 44. The abutting arc plate 41 abuts against the inner arc surface of the arc-shaped plate 3, the connecting plate one 42 is arranged on the top surface of the abutting arc plate 41, the connecting plate two 43 is arranged on the top surface of the abutting arc plate 41, the connecting plate two 43 is arranged beside the connecting plate one 42, the positioning plate 44 is arranged on the top surface of the upper steel structure plate 12, the positioning plate 44 is connected with the connecting plate one 42 through screws, and the positioning plate 44 is connected with the connecting plate two 43 through screws.

[0041] Referring to Figure 1As shown, through the mutual connection relationship between the abutting arc plate 41, the connecting plate one 42, the connecting plate two 43 and the positioning plate 44, the tightness and fastening of the connection between the arc plate 3 and the upper steel structure plate 12 are improved, the possibility of the middle sinking problem of the arch structure is reduced, and the service life of the steel structure in the arch structure is improved.

[0042] Referring to Figure 1 and Figure 3 As shown, the bottom surface of the abutting arc plate 41 is provided with a clamping groove 411, and the top surface of the lower steel structure plate 11 is provided with a switching groove 111. The adjusting mechanism 5 includes a clamping block 51, a connecting pipe 52 and a screw rod 53. The clamping block 51 is inserted into the clamping groove 411. The connecting pipe 52 is arranged on the bottom surface of the clamping block 51. The screw rod 53 is threadedly sleeved in the connecting pipe 52, and is rotationally arranged in the switching groove 111.

[0043] Referring to Figure 1 and Figure 3 As shown, the screw rod 53 is rotated forward or reversely to adjust the distance between the connecting pipe 52 and the lower steel structure plate 11, so that when the middle part of the arc plate 3 sinks, the distance between the arc plate 3 and the lower steel structure plate 11 can be adjusted by the screw rod 53 to provide support for the arc plate 3.

[0044] Referring to Figure 3 As shown, a limiting ring groove 521 is formed in the inner side wall of the connecting pipe 52, and a limiting ring block 531 is arranged on the screw rod 53. The limiting ring block 531 is vertically slidably arranged in the limiting ring groove 521. The limiting ring block 531 prevents the screw rod 53 from being separated from the connecting pipe 52, thereby improving the stability of the connection between the screw rod 53 and the connecting pipe 52.

[0045] Referring to Figure 3 As shown, a limiting groove 112 is formed in the side wall of the switching groove 111, and a limiting block 532 is arranged on the screw rod 53. The limiting block 532 is rotationally arranged in the limiting groove 112. The limiting block 532 prevents the screw rod 53 from being separated from the lower steel structure plate 11, thereby improving the stability of the connection between the screw rod 53 and the lower steel structure plate 11.

[0046] Referring to Figure 1 As shown, the reinforcing mechanism 6 includes a reinforcing plate 61, a reinforcing arc plate 62, an abutting inclined rod 63, a connecting strip one 64, a connecting strip two 65, a connecting rod one and a connecting rod two. The reinforcing plate 61 is arranged on the lower steel structure plate 11. The reinforcing arc plate 62 abuts against the inner arc surface of the arc plate 3. The reinforcing arc plate 62 is connected with the arc plate 3 by screws. The abutting inclined rod 63 is arranged on the reinforcing plate 61 to improve the support for the arc plate 3.

[0047] Referring to Figure 1As shown, the connecting plate strip one 64 abuts against the side of the arc-shaped plate 3, the connecting plate strip one 64 abuts against the side of the upper steel structure plate 12, the connecting plate strip two 65 abuts against the other side of the arc-shaped plate 3, the connecting plate strip two 65 abuts against the side of the upper steel structure plate 12, the connecting rod one is arranged in the arc-shaped plate 3, the connecting rod one is connected with the connecting plate strip one 64, the connecting rod one is connected with the connecting plate strip two 65, the connecting rod two is arranged in the upper steel structure plate 12, the connecting plate strip one 64 is connected with the connecting rod two, the connecting plate strip two 65 is connected with the connecting rod two, thereby improving the stability of the connection between the arc-shaped plate 3 and the upper steel structure plate 12.

[0048] The implementation principle of the modular large-span steel structure according to an embodiment of the present application is as follows:

[0049] The second building column 2 is arranged beside the first building column 1, the first building column 1 is provided with the lower steel structure plate 11, the first building column 1 is provided with the upper steel structure plate 12, the upper steel structure plate 12 is located above the lower steel structure plate 11, the lower steel structure plate 11 is connected with the second building column 2, the upper steel structure plate 12 is connected with the second building column 2, the arc-shaped plate 3 is arranged between the upper steel structure plate 12 and the lower steel structure plate 11, the arc-shaped plate 3 is concave downward, the middle part of the arc-shaped plate 3 is located at the middle part of the bottom surface of the upper steel structure plate 12, the connecting mechanism 4 includes the abutting arc plate 41, the connecting plate one 42, the connecting plate two 43 and the positioning plate 44, the abutting arc plate 41 abuts against the inner arc surface of the arc-shaped plate 3, the connecting plate one 42 is arranged on the top surface of the abutting arc plate 41, the connecting plate two 43 is arranged on the top surface of the abutting arc plate 41, the connecting plate two 43 is arranged beside the connecting plate one 42, the positioning plate 44 is arranged on the top surface of the upper steel structure plate 12, the positioning plate 44 is connected with the connecting plate one 42 through screws, the positioning plate 44 is connected with the connecting plate two 43 through screws, through the mutual connection relationship among the abutting arc plate 41, the connecting plate one 42, the connecting plate two 43 and the positioning plate 44, the tightness and fastening of the connection between the arc-shaped plate 3 and the upper steel structure plate 12 are improved, the possibility of the middle part of the arch structure sinking is reduced, and the service life of the steel structure in the arch structure is improved.

[0050] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A modular large-span steel structure, characterized in that: The structure includes a first building column (1) and a second building column (2) located next to the first building column (1). A lower steel structure plate (11) is provided on the first building column (1), and an upper steel structure plate (12) is provided on the first building column (1). The upper steel structure plate (12) is located above the lower steel structure plate (11). The lower steel structure plate (11) is connected to the second building column (2), and the upper steel structure plate (12) is connected to the second building column (2). An arc-shaped plate (3) is provided between the upper steel structure plate (12) and the lower steel structure plate (11). The arc-shaped plate (3) has a downward-facing notch, and its center is located on the upper steel structure plate (11). 2) At the center of the bottom surface, a connecting mechanism (4) is provided between the arc plate (3) and the upper steel structure plate (12). The connecting mechanism (4) includes an abutting arc plate (41) that abuts against the inner arc surface of the arc plate (3), a connecting plate one (42) provided on the top surface of the abutting arc plate (41), a connecting plate two (43) provided next to the connecting plate one (42), and a positioning plate (44) provided on the top surface of the upper steel structure plate (12). The connecting plate two (43) is provided on the top surface of the abutting arc plate (41). The positioning plate (44) is connected to the connecting plate one (42) by screws, and the positioning plate (44) is connected to the connecting plate two (43) by screws.

2. The modular large-span steel structure according to claim 1, characterized in that: The bottom surface of the abutting arc plate (41) is provided with a snap-fit ​​groove (411), and the top surface of the lower steel structure plate (11) is provided with a transition groove (111). An adjustment mechanism (5) is provided between the abutting arc plate (41) and the lower steel structure plate (11). The adjustment mechanism (5) includes a snap-fit ​​block (51) inserted into the snap-fit ​​groove (411), a connecting pipe (52) provided on the bottom surface of the snap-fit ​​block (51), and a screw (53) threaded in the connecting pipe (52). The screw (53) is rotatably disposed in the transition groove (111).

3. A modular large-span steel structure according to claim 2, characterized in that: A limiting ring groove (521) is provided on the inner side wall of the connecting pipe (52), and a limiting ring block (531) is provided on the screw (53). The limiting ring block (531) is vertically slidably disposed in the limiting ring groove (521).

4. A modular large-span steel structure according to claim 2, characterized in that: A limiting groove (112) is provided on the side wall of the adapter groove (111), and a limiting block (532) is provided on the screw (53). The limiting block (532) is rotatably disposed in the limiting groove (112).

5. A modular large-span steel structure according to claim 1, characterized in that: A reinforcing mechanism (6) is provided between the lower steel structure plate (11) and the arc plate (3). The reinforcing mechanism (6) includes a reinforcing plate (61) set on the lower steel structure plate (11) by screws, a reinforcing arc plate (62) abutting against the inner arc surface of the arc plate (3), and an abutting diagonal bar (63) set on the reinforcing plate (61). The reinforcing arc plate (62) is connected to the arc plate (3) by screws, and the abutting diagonal bar (63) is connected to the reinforcing arc plate (62).

6. A modular large-span steel structure according to claim 5, characterized in that: The reinforcement mechanism (6) includes a connecting strip one (64) that abuts against the side of the arc plate (3), a connecting strip two (65) that abuts against the other side of the arc plate (3), a connecting rod one disposed in the arc plate (3), and a connecting rod two disposed in the upper steel structure plate (12). The connecting rod one is connected to the connecting strip one (64) and the connecting rod one is connected to the connecting strip two (65). The connecting strip one (64) abuts against the side of the upper steel structure plate (12), the connecting strip one (64) is connected to the connecting rod two, the connecting strip two (65) abuts against the side of the upper steel structure plate (12), and the connecting strip two (65) is connected to the connecting rod two.

7. A modular large-span steel structure according to claim 1, characterized in that: A sliding plate (15) is provided on the top surface of the lower steel structure plate (11). A sliding groove (151) is provided on the side of the sliding plate (15). A sliding groove (152) is provided on the top surface of the sliding plate (15). The sliding groove (152) is connected to the sliding groove (151). An elastic filling block (16) is provided on the top surface of the sliding plate (15). A slider (31) is provided on the bottom surface of the arc plate (3). A sliding block (32) is provided on the slider (31). The arc plate (3) abuts against the side of the elastic filling block (16). The slider (31) is slidably disposed in the sliding groove (152). The sliding block (32) is slidably disposed in the sliding groove (151).

8. A modular large-span steel structure according to claim 1, characterized in that: A steel bracket (13) is welded to the bottom surface of one side of the lower steel structure plate (11). The side of the steel bracket (13) near the first building column (1) is in contact with the side of the first building column (1). The steel bracket (13) is connected to the first building column (1) by screws. A steel bracket (14) is welded to the bottom surface of the other side of the lower steel structure plate (11). The side of the steel bracket (14) near the second building column (2) is in contact with the side of the second building column (2). The steel bracket (14) is connected to the second building column (2) by screws.

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