Connecting structure of high-adaptability large-span roof steel frame arc-shaped beam assembling jig frame

Abstract

The utility model discloses a connecting structure of a high-adaptability large-span roof steel frame arc beam assembling jig frame, which comprises a single beam and a beam bottom adjustable jig frame, the beam bottom adjustable jig frame comprises an adjustable base and a single beam limiting frame, the adjustable base comprises a fixed support, an adjustable supporting column and an adjustable cross beam, the adjustable supporting column is close to the inner side of the fixed support, and the adjustable cross beam is close to the outer side of the fixed support. The fixed stand column adjusting holes and the adjustable supporting column adjusting holes are aligned and detachably connected into a whole through bottom supporting connecting pieces, each single beam comprises a beam body and a beam top hoisting piece, limiting column adjusting holes are formed in the limiting columns, and the limiting column adjusting holes and hoisting holes of the beam top hoisting pieces are detachably connected into a whole through top supporting connecting pieces. According to the adjustable jig frame, the adjustable base and the single-beam limiting frame which are used in cooperation are adopted, the height of the whole adjustable base is adjusted through vertical adjustment of the bottom supporting connecting piece, and the single beam and the beam bottom adjustable jig frame are fixed through the limiting columns of the single-beam limiting frame and the top supporting connecting piece.

Description

Technical Field

[0001] The utility model belongs to the field of steel structure construction, and particularly relates to a connection structure of an assembling jig for an arc beam of a large-span roof steel frame with high adaptability. Background Art

[0002] At present, the external shape designs of major buildings are gradually diversified, and large-span and arc-shaped roofs are mostly adopted for building roofs, which puts forward higher requirements for construction. The arc beam of the large-span roof steel frame has good stress performance and stability, and has the characteristics of factory production, segmented processing, and rapid on-site assembly. The rapid assembly of the arc beam of the large-span roof steel frame is inseparable from the assembling jig. Since the beam body presents a large-span arc, the heights of the splicing parts are different, and corresponding assembling jigs need to be designed separately at each splicing point, and the on-site construction is very cumbersome. At the same time, the assembling jig generally needs to be connected to or limited to the main stress members on the beam body to achieve stable fixation of the beam body.

[0003] For example, CN102777050B discloses an assembling jig for a large-span pipe truss roof beam, which designs a bracket to assemble the horizontally arranged truss roof beam, and fixes the main stress chord by installing upper and lower chord positioning baffles on the bracket to complete the assembly.

[0004] CN203684703U discloses an assembling jig for loose parts of a main truss of a large-span steel structure roof cover, which designs a bracket to assemble the vertically arranged truss roof beam, and fixes the stressed round bar by installing steel backing plates and limiting plates on the bracket to complete the assembly.

[0005] There are obvious problems in the prior art:

[0006] First, each jig is a fixed-height jig, and its adaptability is poor when applied to the arc beam of the large-span roof steel frame; when the heights of the splicing parts are different, each jig needs to be separately made at each position.

[0007] Second, the jig needs to be connected to or limit the main stress rod of the beam body, and it is easy to damage the main stress rod during the assembly process. Summary of the Utility Model

[0008] The purpose of the utility model is to provide a connection structure of an assembling jig for an arc beam of a large-span roof steel frame with high adaptability, and it is necessary to solve the technical problem that each jig in the prior art for assembling a large-span steel structure roof is a fixed-height jig and its adaptability is poor when applied to the arc beam of the large-span roof steel frame; it is also necessary to solve the technical problem that the jig needs to be connected to or limit the main stress rod of the beam body, and it is easy to damage the main stress rod during the assembly process.

[0009] To achieve the above object, the utility model adopts the following technical solutions:

[0010] A connecting structure of an assembling jig for an arc beam of a large-span roof steel frame with high adaptability, including an arc beam of a roof steel frame. The arc beam of the roof steel frame includes single beams that are identical in structure and arranged in parallel. The single beams are fixedly connected to each other, and further includes two adjustable jigs at the beam bottom. Each adjustable jig at the beam bottom includes an adjustable base and a single beam limiting frame.

[0011] The adjustable base includes two fixed supports, two adjustable support columns and an adjustable cross beam.

[0012] The setting width between the two fixed supports is greater than the width of the arc beam of the roof steel frame, and the bottom stands on the ground. The middle part of the fixed support includes a fixed column, and a group of horizontal fixed column adjustment holes are opened along the height direction of the fixed column.

[0013] The two adjustable support columns are respectively arranged close to the inner sides of the two fixed supports. A group of horizontal adjustable support column adjustment holes are opened along the height direction of the adjustable support column. One of the fixed column adjustment holes and one of the adjustable support column adjustment holes are aligned. The bottom support connecting piece sequentially passes through the aligned fixed column adjustment hole and adjustable support column adjustment hole to detachably connect the adjustable support column and the fixed column into one body.

[0014] The length of the adjustable cross beam is equal to the distance between the outer end faces of the two fixed supports. The tops of the two adjustable support columns are respectively fixedly connected to the bottoms of both ends of the adjustable cross beam.

[0015] The single beam includes a beam body, large-size beam stiffening plates on the beam sides and beam top hoisting parts.

[0016] The bottom of the single beam limiting frame is fixedly connected to the top of the adjustable cross beam, and includes limiting columns and limiting braces. The limiting columns are arranged in pairs at intervals along the length direction of the adjustable cross beam. The distance between each pair of limiting columns is greater than the width of the beam body and less than the sum of the distances of the plate ends protruding from the large-size beam stiffening plates. The number of pairs of limiting columns arranged is the same as the number of single beams. The limiting braces are fixedly connected between adjacent pairs of limiting columns.

[0017] The bottom of the beam body is placed in the limiting space formed between the paired limiting columns and above the adjustable cross beam.

[0018] The beam top hoisting parts are fixedly connected to the top surface of the beam body at intervals, and include vertically arranged hoisting plates. Hoisting holes are symmetrically arranged at the four corners of the hoisting plates. A group of horizontal limiting column adjustment holes are opened along the height direction of the limiting columns and on the side close to the beam body. Two of the limiting column adjustment holes and the hoisting holes are aligned at the same height. The top support connecting piece sequentially passes through the aligned limiting column adjustment holes and hoisting holes to detachably connect the limiting columns and the beam body into one body.

[0019] Each single beam is composed of three beam segments, namely the middle beam segment and two end beam segments on both sides. The beam segments are fixedly connected. The bottom surface of the middle beam segment is flat, and the adjustable formwork support under the beam is supported at the two ends of the bottom of the middle beam segment. The bottom surface of the end beam segment is inclined. One end of the end beam segment is connected to one end of the middle beam segment, and the other end of the end beam segment rests on the ground.

[0020] The arc-shaped beam of the roof steel frame includes a total of three single beams, and a corresponding total of six limit columns are provided and divided into three pairs.

[0021] The fixed support is planar, and also includes a base beam horizontally arranged on the ground and two diagonal braces. The bottom of the fixed column is fixedly connected to the center of the base beam. One end of the diagonal brace is connected to the end of the base beam, and the other end of the diagonal brace is connected to both sides of the fixed column. The base beam and the diagonal braces form an isosceles triangle.

[0022] The fixed column and the adjustable support column are H-shaped steels with the same size and aligned crossbeams. The fixed column adjustment holes are provided on the web of the fixed column, and the adjustable support column adjustment holes are provided on the web of the adjustable support column. The flange plates of the fixed column and the adjustable support column are both vertically arranged.

[0023] The bottom support connecting piece is a straight bolt.

[0024] The limit column is an angle steel, including a longitudinal beam plate arranged along the beam direction and a cross beam plate arranged along the cross beam direction. The limit column adjustment holes are provided on the longitudinal beam plate, and the limit column adjustment holes are in the cross beam direction.

[0025] The beam top lifting piece is located in front of or behind the limit column. The cross section of the beam top lifting piece is a variable cross-section T shape. The beam top lifting piece also includes a lifting plate support plate fixedly connected perpendicular to the lifting plate. The bottom of the lifting plate support plate is also fixedly connected to the top surface of the beam body. The opening direction of the lifting hole is along the beam direction.

[0026] The top support connecting piece is an L-shaped bolt, including a longitudinal beam screw along the beam direction and a cross beam screw along the cross beam direction. The longitudinal beam screw passes through the lifting hole, and the cross beam screw passes through the limit column adjustment hole. The ends of the longitudinal beam screw and the cross beam screw are both limited by nuts.

[0027] The diagonal brace is an angle steel or a T-shaped steel. The base beam is an H-shaped steel. The flange plate of the base beam is horizontally arranged. The limit brace is an angle steel or a T-shaped steel.

[0028] Compared with the prior art, the present utility model has the following characteristics and beneficial effects:

[0029] The utility model designs an adjustable base and a single-beam limit frame that are used in cooperation with each other. The vertical adjustment between the fixed support column adjustment hole and the adjustable support column adjustment hole through the bottom support connecting piece realizes the adjustment of the protruding height of the adjustable support column relative to the fixed support, and realizes the height adjustment of the entire adjustable base, ensuring that the overall elevation of the beam bottom adjustable falsework can meet the different bottom arch heights of the large-span roof steel frame arc beams and meet the high adaptability of the supporting height. When the heights of the splicing parts are different, there is no need to separately manufacture each falsework. When the height of the unified manufactured falsework needs to be adjusted, the upper part of the falsework is lifted to the corresponding height by the on-site lifting equipment, and the height is adjusted and fixed on-site.

[0030] The utility model designs a limit fixing method that cooperates with the beam top lifting piece by using the limit column of the single-beam limit frame, and realizes the fixation of the single beam and the beam bottom adjustable falsework through the top support connecting piece.

[0031] The utility model is welded by using steel sections such as H-shaped steel, T-shaped steel, and angle steel, which can be processed on-site, is practical and simple, and improves the assembly efficiency. Brief Description of the Drawings

[0032] The following further describes the present utility model in detail with reference to the drawings.

[0033] Figure 1 It is a structural schematic diagram of the present utility model.

[0034] Figure 2 is Figure 1 The side view structural connection schematic diagram of the beam bottom adjustable falsework in the beam length direction.

[0035] Figure 3 is Figure 2 The partial enlarged view of the top support connecting piece.

[0036] Figure 4 is Figure 1 The structural schematic diagram of the beam bottom adjustable falsework.

[0037] Figure 5 is Figure 1 The side view structural connection schematic diagram of the beam bottom adjustable falsework in the cross beam direction.

[0038] Figure 6 is Figure 5 The partial enlarged view of the bottom support connecting piece.

[0039] Figure 7 is Figure 5 The partial enlarged view of the top support connecting piece.

[0040] Figure 8 is Figure 7 The top view schematic diagram of the connection structure of the top support connecting piece.

[0041] Reference numerals:

[0042] 1 - single beam, 1a - middle beam section, 1b - end beam section;

[0043] 11 - beam body, 12 - large - sized beam stiffening plate, 13 - beam top lifting member, 131 - lifting plate, 132 - lifting hole, 133 - lifting plate support beam;

[0044] 2 - adjustable support for beam bottom;

[0045] 21 - adjustable base, 211 - fixed support, 212 - adjustable support column, 213 - adjustable cross - beam, 214 - fixed column, 215 - fixed column adjustment hole, 216 - adjustable support column adjustment hole, 217 - base beam, 218 - diagonal brace;

[0046] 22 - single - beam limit frame, 221 - limit column, 22a - longitudinal beam plate, 22b - cross - beam plate, 222 - limit brace, 223 - limit column adjustment hole;

[0047] 3 - bottom support connecting part;

[0048] 4 - top support connecting part, 41 - longitudinal beam screw, 42 - cross - beam screw. Detailed implementation manners

[0049] Refer to Figures 1-8 As shown, a connection structure of an assembling jig for an arc - shaped beam of a large - span roof steel frame with high adaptability includes an arc - shaped beam of a roof steel frame. The arc - shaped beam of the roof steel frame includes single beams 1 which are identical in structure and arranged in parallel. The single beams 1 are fixedly connected to each other. It also includes two adjustable supports 2 for the beam bottom. Each adjustable support 2 for the beam bottom includes an adjustable base 21 and a single - beam limit frame 22.

[0050] Refer to Figures 1-2 As shown, in this embodiment, the cross - section of each single beam 1 is in the shape of an I - beam and is composed of three beam sections, namely a middle beam section 1a and two end beam sections 1b on both sides. The beam sections are fixedly connected. The bottom surface of the middle beam section 1a is a plane, and the adjustable support 2 for the beam bottom is supported at both ends of the bottom of the middle beam section 1a. The bottom surface of the end beam section 1b is an inclined plane. One end of the end beam section 1b is connected to one end of the middle beam section 1a, and the other end of the end beam section 1b is placed on the ground.

[0051] In this embodiment, the arc - shaped beam of the roof steel frame includes a total of three single beams 1, and the corresponding limit columns 221 are set in six and divided into three pairs.

[0052] Refer to Figures 4-5 As shown, the adjustable base 21 includes two fixed supports 211, two adjustable support columns 212 and one adjustable cross - beam 213.

[0053] See Figure 6 As shown, the set width between the two fixed supports 211 is greater than the width of the arched beam of the roof steel frame. The bottom stands on the ground. The fixed support 211 is planar. The middle part of the fixed support 211 includes a fixed column 214, and a set of horizontal fixed column adjustment holes 215 are opened along the height direction of the fixed column 214. The fixed support 211 also includes a base beam 217 horizontally arranged on the ground and two diagonal braces 218. The bottom of the fixed column 214 is fixedly connected to the center of the base beam 217. One end of the diagonal brace 218 is connected to the end of the base beam 217, and the other end of the diagonal brace 218 is connected to both sides of the fixed column 214. The base beam 217 and the diagonal brace 218 form an isosceles triangle.

[0054] Two adjustable support columns 212 are respectively arranged close to the inner sides of the two fixed supports 211. A set of horizontal adjustable support column adjustment holes 216 are opened along the height direction of the adjustable support column 212. One of the holes of the fixed column adjustment hole 215 is aligned with one of the holes of the adjustable support column adjustment hole 216.

[0055] In this embodiment, the bottom support connecting member 3 is a straight bolt, and an M20 bolt can be used. The fixed column 214 and the adjustable support column 212 are H-shaped steels with the same size and aligned crossbeams. The fixed column adjustment holes are arranged on the web of the fixed column 214, and the adjustable support column adjustment holes are arranged on the web of the adjustable support column 212. The flange plates of the fixed column 214 and the adjustable support column 212 are both vertically arranged. The bottom support connecting member 3 detachably connects the adjustable support column 212 and the fixed column 214 into one body through the aligned fixed column adjustment holes 215 and adjustable support column adjustment holes 216 in sequence. The two ends of the straight bolt are limited to the corresponding webs through nuts.

[0056] The length of the adjustable crossbeam 213 is equal to the distance between the outer end faces of the two fixed supports 211. The tops of the two adjustable support columns 212 are respectively fixedly connected to the bottoms of the two ends of the adjustable crossbeam 213.

[0057] See Figures 1-2 As shown, the single beam 1 includes a beam body 11, large-size beam stiffening plates 12 on the sides of the beam, and a beam top lifting member 13.

[0058] See Figures 4-5 As shown, the bottom of the single beam limit frame 22 is fixedly connected to the top of the adjustable crossbeam 213, and includes limit columns 221 and limit braces 222. The limit columns 221 are arranged in pairs at intervals along the length direction of the adjustable crossbeam 213. The distance between each pair of limit columns 221 is greater than the width of the beam body 11 and less than the sum of the distances of the plate ends extended by the large-size beam stiffening plates 12. The number of pairs of limit columns 221 arranged is the same as the number of single beams 1. The limit braces 222 are fixedly connected between adjacent pairs of limit columns 221.

[0059] See Figures 1-3 As shown, the bottom of the beam body 11 is placed in the limiting space formed between the paired limiting columns 221 and above the upper side of the adjustable cross beam 213.

[0060] See Figure 3 、 5 、Figs. 7-8, the beam top lifting members 13 are fixedly connected to the top surface of the beam body 11 at intervals, including a vertically arranged lifting plate 131. Lifting holes 132 are symmetrically provided at the four corners of the lifting plate 131. Along the height direction of the limiting column 221 and on the side close to the beam body 11, a set of horizontal limiting column adjustment holes 223 are opened. Two of the limiting column adjustment holes 223 are aligned with the lifting holes 132 at the same height. The top support connecting member 4 detachably connects the limiting column 221 and the beam body 11 into one body by passing through the aligned limiting column adjustment holes 223 and lifting holes 132 in sequence.

[0061] The limiting column 221 is an angle steel, including a longitudinally arranged longitudinal beam plate 22a and a transversely arranged cross beam plate 22b. The limiting column adjustment holes 223 are arranged on the longitudinal beam plate 22a, and the limiting column adjustment holes 223 are transversely arranged.

[0062] The beam top lifting member 13 is located in front of or behind the limiting column 221. The cross section of the beam top lifting member 13 is a variable cross-section T shape. The beam top lifting member 13 further includes a lifting plate support plate 133 fixedly connected perpendicular to the lifting plate 131. The bottom of the lifting plate support plate 133 is also fixedly connected to the top surface of the beam body 11. The opening direction of the lifting holes 132 is longitudinally arranged along the beam.

[0063] In this embodiment, the top support connecting member 4 is an L-shaped bolt, including a longitudinally arranged longitudinal beam screw 41 and a transversely arranged cross beam screw 42. The longitudinal beam screw 41 passes through the lifting hole 132, and the cross beam screw 42 passes through the limiting column adjustment hole 223. The ends of the longitudinal beam screw 41 and the cross beam screw 42 are limited by nuts.

[0064] In this embodiment, the distance L between the two beam bottom adjustable jigs 2 is 11600 mm. The distance h between the two fixed supports 211 of each adjustable base 21 is 8000 mm.

[0065] The base beam 217 is an H-shaped steel. The flange plates of the base beam 217 are horizontally arranged. The H-shaped steel size of the base beam 217 is the same as that of the fixed column 214 and the adjustable support column 212. Specifically, the H-shaped steel can adopt H300 mm×200 mm×6 mm×6 mm. The length c of the base beam 217 is 1500 mm, and the height d of the fixed column 214 is 650 mm.

[0066] The height e of the adjustable support column 212 is 650 mm.

[0067] The height f of the limit post 221 is 1250 mm, and the distance g between each pair of limit posts 221 is 1100 mm.

[0068] The diagonal bracing 218 is an angle steel or a T-shaped steel, and the limit brace 222 is an angle steel or a T-shaped steel.

[0069] Specifically, the T-shaped steel can be T100 mm×100 mm×6 mm, and the angle steel can be L50 mm×5 mm. The components are fixedly connected by welding.

[0070] The construction process of the present utility model is as follows:

[0071] Step 1, according to the elevations of the bottom surfaces of each section of the single beam 1, fabricate the adjustable beam bottom support 2 on-site or in the factory;

[0072] Step 2, first place two adjustable beam bottom supports 2 on the ground according to the designed lengths of each middle beam section 1a, and pre-support them at the bottoms of each middle beam section 1a respectively;

[0073] Step 3, then adjust the fixed column adjustment hole 215 of the fixed support and the adjustable support column adjustment hole 216 to a suitable alignment height, and tighten the bottom support connecting piece 3 through the two holes to complete the installation of the adjustable base 21;

[0074] Step 4, hoist the lifting hole 132 of the middle beam section 1a of a single single beam 1 to the corresponding height on-site by a lifting device, and then place it between the corresponding pair of limit posts 221;

[0075] Step 5, bolt-connect the limit post 221 and the adjacent beam top lifting piece 13 at the top of each middle beam section 1a through the top support connecting piece 4;

[0076] Step 6, repeat Step 4 and Step 5 to place each middle beam section 1a between the corresponding limit posts 221 and detachably connect them;

[0077] Step 7, place one end of the end beam sections 1b on both sides on the ground, and lift the other end and bolt-fix it to the end of each middle beam section 1a to transfer the force on the adjustable beam bottom support 2;

[0078] Step 8, sequentially disassemble the top support connecting piece 4 and the bottom support connecting piece 3, remove the adjustable beam bottom support 2 and carry out turnover.

Claims

1. A highly adaptable large-span roof steel frame arc-shaped beam assembly frame connection structure, comprising a roof steel frame arc-shaped beam, the roof steel frame arc-shaped beam comprising single beams (1) with the same structure and arranged in parallel, the single beams (1) are fixedly connected to each other, and characterized in that: It also includes two beam bottom adjustable tire frames (2), each beam bottom adjustable tire frame (2) includes an adjustable base (21) and a single beam limit frame (22), The adjustable base (21) includes two fixed supports (211), two adjustable support columns (212) and an adjustable crossbeam (213). The width between the two fixed supports (211) is greater than the width of the curved beam of the roof steel frame, and the bottom is erected on the ground. The middle part of the fixed support (211) includes a fixed column (214), and a group of horizontal fixed column adjustment holes (215) are opened along the height direction of the fixed column (214). The two adjustable support columns (212) are respectively arranged close to the inner sides of the two fixed supports (211), and a group of horizontal adjustable support column adjustment holes (216) are opened along the height direction of the adjustable support column (212). One of the holes of the fixed column adjustment holes (215) is aligned with one of the holes of the adjustable support column adjustment holes (216). The bottom support connector (3) sequentially connects the adjustable support column (212) and the fixed column (214) in a detachable manner through the aligned fixed column adjustment holes (215) and the adjustable support column adjustment holes (216). The length of the adjustable crossbeam (213) is equal to the distance between the outer end surfaces of the two fixed supports (211), and the tops of the two adjustable support columns (212) are fixedly connected to the bottoms of both ends of the adjustable crossbeam (213), respectively. The single beam (1) comprises a beam body (11), a large-sized beam stiffening plate (12) on the side of the beam, and a beam top hanging member (13). The bottom of the single beam limit frame (22) is fixedly connected to the top of the adjustable cross beam (213), and comprises a limit column (221) and a limit support (222). The limit columns (221) are arranged in pairs along the length direction of the adjustable cross beam (213). The distance between each pair of limit columns (221) is greater than the width of the beam body (11) and less than the sum of the distances between the ends of the large-size beam stiffening plates (12). The number of pairs of limit columns (221) is the same as the number of single beams (1). The limit support (222) is fixedly connected between two adjacent pairs of limit columns (221). The bottom of the beam body (11) is placed in a limiting space formed between the pair of limiting columns (221) and the upper side of the adjustable crossbeam (213). The beam top hanging parts (13) are fixedly connected to the top surface of the beam body (11) at intervals, and include a hanging plate (131) arranged vertically, and hanging holes (132) are symmetrically arranged at the four corners of the hanging plate (131). A group of horizontal limit column adjustment holes (223) are opened along the height direction of the limit column (221) and on a side close to the beam body (11), and two of the limit column adjustment holes (223) are aligned with the hanging holes (132) at the same height. The top support connecting part (4) connects the limit column (221) and the beam body (11) detachably as a whole through the aligned limit column adjustment holes (223) and the hanging holes (132).

2. The connection structure of the highly adaptable large-span roof steel frame arc beam assembly frame according to claim 1 is characterized in that: Each single beam (1) is composed of three beam sections, namely a middle beam section (1a) and two end beam sections (1b) on both sides. The beam sections are fixedly connected. The bottom surface of the middle beam section (1a) is a plane. The adjustable bottom frame (2) of the beam is supported at the bottoms of both ends of the middle beam section (1a). The bottom surface of the end beam section (1b) is an inclined surface. One end of the end beam section (1b) is connected to one end of the middle beam section (1a), and the other end of the end beam section (1b) is placed on the ground.

3. The connection structure of the highly adaptable large-span roof steel frame arc beam assembly frame according to claim 1 is characterized in that: The roof steel frame arc beam comprises three single beams (1) in total, and six corresponding limit columns (221) are arranged in three pairs.

4. The connection structure of the highly adaptable large-span roof steel frame arc beam assembly frame according to claim 1 is characterized in that: The fixed support (211) is in a planar shape and further comprises a base beam (217) and two diagonal bracing rods (218) disposed horizontally on the ground. The bottom of the fixed column (214) is fixedly connected to the center of the base beam (217). One end of the diagonal bracing rod (218) is connected to the end of the base beam (217). The other end of the diagonal bracing rod (218) is connected to two sides of the fixed column (214). The base beam (217) and the diagonal bracing rod (218) form an isosceles triangle.

5. The connection structure of the highly adaptable large-span roof steel frame arc beam assembly frame according to claim 4 is characterized in that: The fixed column (214) and the adjustable support column (212) are H-shaped steels of the same size and aligned in the cross-beam direction; the adjustment hole of the fixed column (214) is arranged on the web of the fixed column (214); the adjustment hole of the adjustable support column (212) is arranged on the web of the adjustable support column (212); and the flange plates of the fixed column (214) and the adjustable support column (212) are both arranged vertically.

6. The connection structure of the highly adaptable large-span roof steel frame arc beam assembly frame according to claim 1 is characterized in that: The bottom supporting connecting piece (3) is a straight bolt.

7. The connection structure of the highly adaptable large-span roof steel frame arc beam assembly frame according to claim 1 is characterized in that: The limiting column (221) is an angle steel, comprising a beam-along plate (22a) arranged in the beam-along direction and a beam-along plate (22b) arranged in the beam-along direction; the limiting column adjustment hole (223) is arranged on the beam-along plate (22a); and the limiting column adjustment hole (223) is in the beam-along direction.

8. The connection structure of the highly adaptable large-span roof steel frame arc beam assembly frame according to claim 7 is characterized in that: The beam top hanging piece (13) is located at the front side or the rear side of the limiting column (221); the cross section of the beam top hanging piece (13) is a variable cross section T-shaped; the beam top hanging piece (13) further comprises a hanging plate support plate (133) vertically fixedly connected to the hanging plate (131); the bottom of the hanging plate support plate (133) is also fixedly connected to the top surface of the beam body (11); and the opening direction of the hanging hole (132) is along the beam direction.

9. The connection structure of the highly adaptable large-span roof steel frame arc beam assembly frame according to claim 8 is characterized in that: The top support connector (4) is an L-shaped bolt, comprising a longitudinal screw rod (41) in the longitudinal direction of the beam and a transverse screw rod (42) in the transverse direction of the beam. The longitudinal screw rod (41) passes through the hoisting hole (132), and the transverse screw rod (42) passes through the limit column adjustment hole (223). The ends of the longitudinal screw rod (41) and the transverse screw rod (42) are both limited by nuts.

10. The connection structure of the highly adaptable large-span roof steel frame arc beam assembly frame according to claim 4 is characterized in that: The diagonal brace (218) is an angle steel or a T-shaped steel, the base beam (217) is an H-shaped steel, the flange plate of the base beam (217) is arranged horizontally, and the limit brace (222) is an angle steel or a T-shaped steel.

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