An assembled large-span cold-formed solid-web arch structure

Abstract

The present invention discloses an assembled large-span cold-bent solid arch structure, including a rigid arch unit, a dense tie rod connection unit, and a non-dense tie rod connection unit. The rigid arch unit, the dense tie rod connection unit, and the non-dense tie rod connection unit are all made of steel. The dense tie rod connection unit and the non-dense tie rod connection unit connect the rigid arch unit to an integral structure through a specific connection node, and are all bolted during on-site installation. The present invention is an assembled structure, with no welding at the construction site, a short construction period, and easy control of construction quality; the structure is an arch structure, with clear force transmission, fewer components, small structural deadweight, large spanning capacity, saving steel, and high space utilization; there are few dead angles in the components, the workload of secondary rust removal and anti-corrosion is small, and the rust removal quality is easy to control, which has practical significance and good application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of building frames, in particular to an assembled large-span cold-bent solid-web arch structure. Background Art

[0002] Existing closed warehouses generally use portal frame structures and grid structures. These two structures have the characteristics of simple force bearing, clear force transmission path, and easy factory processing, so they are widely used in industrial and civil buildings. However, the spanning capacity of the portal frame structure is limited and it is not suitable for structures with larger spans; the grid structure usually uses welded hollow ball node grids and bolt ball node grids. Among them, the welded hollow ball node grid has a large on-site welding workload, the welding quality is difficult to control, the labor cost is large, and the construction period is long. The bolt ball in the bolt ball node grid is heavy, and the precision requirements for each accessory are high. It is difficult to install on site. In addition, the grid structure has a large number of rods, a large amount of high-altitude operations and a high risk factor. The construction quality is difficult to control, there are many dead angles in the components, and rust removal and anti-corrosion work is difficult and costly, which can easily affect the overall quality of the grid. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the above-mentioned technical problems and to provide an assembled large-span cold-bent solid-web arch structure, which not only has the advantages of saving manpower and shortening construction period of the assembled structure, but also has the advantages of light weight of the arch structure, large span, and low difficulty of rust removal and anti-corrosion work in the future.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: an assembled large-span cold-formed solid arch structure, the cold-formed solid arch structure is a fully assembled structure, and the on-site installation between each component is bolted, including a plurality of rigid arch units, dense tie rod connection units and non-dense tie rod connection units, each rigid arch unit is connected as a whole by a dense tie rod connection unit or a non-dense tie rod connection unit, that is, the two rigid arch units at the ends of the cold-formed solid arch structure are connected by a dense tie rod connection unit, and the remaining rigid arch units located in the middle of the cold-formed solid arch structure are connected by non-dense tie rod connection units.

[0005] Preferably, each component of the cold-formed solid-web arch structure is made of steel.

[0006] Preferably, the rigid arch unit comprises two cold-bent solid arches, diagonal braces, arch crown ties, column base ties and middle rigid ties. The middle rigid ties and diagonal braces are evenly distributed on the two cold-bent solid arches, the middle part is provided with an arch crown tie, and both end portions are provided with column base ties; the densely distributed tie rod connection unit and the non-densely distributed tie rod connection unit both comprise arch crown ties, column base ties and middle flexible ties. The densely distributed tie rod connection unit and the non-densely distributed tie rod connection unit both have middle flexible ties evenly distributed on them, the middle part is provided with an arch crown ties, and both end portions are provided with column base ties. Both ends of the arch crown ties, column base ties and middle flexible ties are connected to the cold-bent solid arches of the rigid arch units on both sides, and the middle flexible ties of the densely distributed tie rod connection unit are arranged more densely than those of the non-densely distributed tie rod connection unit.

[0007] More preferably, the cold-bent solid arch is formed by splicing several sections of cold-bent H-shaped steel, the arch top tie rod and the column base tie rod are both configured as long box-shaped with a box-shaped cross-section, the diagonal brace, the middle rigid tie rod, and the middle flexible tie rod are all configured as long tube-shaped with a circular tube cross-section, the end of the middle flexible tie rod is flattened and punched, and the end of the middle rigid tie rod is not flattened.

[0008] More preferably, the cold-formed solid arch is formed by strong splicing of multiple sections of cold-formed H-shaped steel, the arch crown tie rod is connected to the cold-formed solid arch through the arch crown splicing node, the middle rigid tie rod, the middle flexible tie rod, the diagonal brace and the cold-formed solid arch are connected through the middle tie rod connecting node, and the column base tie rod, the diagonal brace and the cold-formed solid arch are connected through the column base tie rod connecting node.

[0009] More preferably, the arch splicing node includes a first connecting plate, a second connecting plate, a third connecting plate, a first stiffening rib, a second stiffening rib and a third stiffening rib, the two sections of H-shaped steel of the cold-bent solid arch are welded to the first connecting plate and the second connecting plate respectively, one end of the arch tie rod is welded to the third stiffening rib, and the lower end is welded to the second stiffening rib, the arch tie rod, the third stiffening rib and the second stiffening rib are all welded to the third connecting plate, and during on-site installation, the first connecting plate and the third connecting plate are fixed to the second connecting plate by bolts, and then the three welded parts are assembled.

[0010] More preferably, the diagonal brace includes a diagonal brace connecting plate, an ear buckle and an adjustable bolt sleeve. There are two diagonal brace connecting plates, one end of which is provided with an ear buckle, and the other ends of the two diagonal brace connecting plates are connected by an adjustable bolt sleeve. After the end ear buckle is connected to the diagonal brace connecting plate, the middle part of the adjustable bolt sleeve is rotated forward and backward, and the diagonal brace is adjusted to fix it to a suitable position, and then the bolts on both sides of the adjustable bolt sleeve are tightened.

[0011] More preferably, the middle tie rod connection node includes a fourth connecting plate, a fifth connecting plate, a sixth connecting plate, a seventh connecting plate, a fourth stiffening rib and a fifth stiffening rib, the fourth connecting plate is welded to the web of the cold-bent solid arch, the middle rigid tie rod port is welded to the sixth connecting plate, and the fourth stiffening rib and the seventh connecting plate are welded below in sequence, the fifth connecting plate and the fifth stiffening rib are both welded to the side wall and the sixth connecting plate of the middle rigid tie rod, during on-site installation, the flattened end of the middle flexible tie rod is connected to the fourth connecting plate by bolts, the sixth connecting plate and the seventh connecting plate are respectively connected to the web and the lower flange of the cold-bent solid arch by bolts, the ear buckles of the diagonal brace are connected to the fifth connecting plate by bolts, and then the middle rigid tie rod, the middle rigid tie rod, the cold-bent solid arch and the diagonal brace are assembled.

[0012] More preferably, the column base tie rod connection node includes an eighth connecting plate, a ninth connecting plate, a tenth connecting plate and a sixth stiffening rib, one end of the column base tie rod is welded to the sixth stiffening rib and the tenth connecting plate, and the eighth connecting plate and the ninth connecting plate are welded to the web of the cold-bent solid arch. During on-site installation, the eighth connecting plate is connected to the tenth connecting plate by bolts, and the ear buckles of the diagonal brace are connected to the ninth connecting plate by bolts, and then the column base tie rod, the diagonal brace and the cold-bent solid arch are assembled.

[0013] The beneficial effects of the present invention are:

[0014] 1. The structure of the present invention is an assembled structure, the components are prefabricated and welded in the factory, and are bolted during installation on the construction site. The construction is less affected by the climate, the construction period is short, the manpower requirement is small, and the construction quality is easy to control;

[0015] 2. The structure of the present invention is an arched structure, with clear force transmission, few components, small structural weight, large spanning capacity, steel saving and high space utilization;

[0016] 3. The structural system of the present invention uses a small number of components, has few dead angles, has a small workload for secondary rust removal and anti-corrosion, and the quality of rust removal is easy to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the planar structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the rigid arch unit structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the vault splicing node structure of the present invention.

[0021] Figure 5 It is a schematic diagram of the explosion structure of the vault splicing node of the present invention.

[0022] Figure 6 It is a schematic diagram of the middle tie rod connection node structure of the present invention.

[0023] Figure 7 It is a schematic diagram of the cross section of the end of the middle flexible tie rod.

[0024] Figure 8 It is a schematic diagram of the middle rigid tie rod connection structure.

[0025] Fig. 9 yes Figure 8 Schematic diagram of the right view structure.

[0026] Fig.10 It is a schematic diagram of the column base tie rod connection node structure of the present invention.

[0027] Fig.11 It is a schematic diagram of the connection structure of the column base tie rod.

[0028] Fig.12 It is a structural diagram of the diagonal brace.

[0029] Markings in the figure: Ⅰ, rigid arch unit, Ⅱ, dense tie connection unit, Ⅲ, non-dense tie connection unit, 1, cold-bent solid arch, 2, arch tie, 3, arch splicing node, 4, first connecting plate, 5, second connecting plate, 6, middle rigid tie, 7, middle flexible tie, 8, middle tie connection node, 9, fourth connecting plate, 10, eighth connecting plate, 11, fifth connecting plate, 12, ninth connecting plate, 13, third connecting plate, 14, sixth connecting plate, 15, seventh connecting plate, 16, tenth connecting plate, 17, column base tie, 18, diagonal brace, 1801, diagonal brace connection plate, 1802, ear buckle, 1803, adjustable bolt sleeve, 19, column base tie connection node, A1, first stiffening rib, A2, second stiffening, A3, third stiffening rib, A4, fourth stiffening rib, A5, fifth stiffening rib, A6, sixth stiffening rib. DETAILED DESCRIPTION

[0030] The specific structural arrangement and implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0031] like Figure 1-2As shown, a prefabricated large-span cold-formed solid arch structure of this embodiment is a fully prefabricated structure, and the on-site installation between each component is bolted, including multiple rigid arch units I, dense tie rod connection units II and non-dense tie rod connection units III, each rigid arch unit I is connected as a whole through dense tie rod connection units II or non-dense tie rod connection units III, that is, the two rigid arch units I at the ends of the cold-formed solid arch structure are connected through dense tie rod connection units II, and the remaining rigid arch units I located in the middle of the cold-formed solid arch structure are connected through non-dense tie rod connection units III. This arrangement can control the error of the structure within a certain range during installation, and the construction quality is easy to control. In this embodiment, the materials of each component of the cold-formed solid arch structure are steel.

[0032] picture Figure 1-3 As shown, the rigid arch unit I of this embodiment includes two cold-bent solid-web arches 1, diagonal braces 18, arch crown tie rods 2, column foot tie rods 17 and middle rigid tie rods 6. The middle rigid tie rods 6 and diagonal braces 18 are evenly distributed between the two cold-bent solid-web arches 1, the arch crown tie rods 2 are provided in the middle, and the column foot tie rods 17 are provided at both ends. The dense tie rod connection unit II and the non-dense tie rod connection unit III both include arch crown tie rods 2, column foot tie rods 17 and middle flexible tie rods 7. The middle flexible tie rods 7 are evenly distributed on the dense tie rod connection unit II and the non-dense tie rod connection unit III, the arch crown tie rods 2 are provided in the middle, and the column foot tie rods 17 are provided at both ends. The arch crown tie rods 2, the column foot tie rods 17 and the middle flexible tie rods 7 are connected to the cold-bent solid-web arches 1 of the rigid arch units I on both sides. The middle flexible tie rods 7 of the dense tie rod connection unit II are arranged more densely than those of the non-dense tie rod connection unit III. The cold-formed solid web arch 1 is formed by splicing a plurality of cold-formed H-shaped steel sections. The arch top tie rod 2 and the column foot tie rod 17 are both set to be long box-shaped with a box-shaped cross section. The diagonal brace 18, the middle rigid tie rod 6, and the middle flexible tie rod 7 are all set to be long tube-shaped with a circular tube cross section. Figure 7 As shown, the end of the middle flexible tie rod 7 is flattened and punched, while the end of the middle rigid tie rod 6 is not flattened. This structural arrangement makes the cross-sectional form of the component simple and the types are few, so that the overall structure has fewer dead angles, the workload of secondary rust removal and anti-corrosion is small, and the rust removal quality is easy to control.

[0033] like Figure 1 As shown, the cold-formed solid arch 1 is formed by strong splicing of multiple cold-formed H-shaped steel sections, the arch top tie rod 2 is connected to the cold-formed solid arch 1 through the arch top splicing node 3, the middle rigid tie rod 6, the middle flexible tie rod 7, and the diagonal brace 18 are connected to the cold-formed solid arch 1 through the middle tie rod connection node 8, and the column foot tie rod 17 and the diagonal brace 18 are connected to the cold-formed solid arch 1 through the column foot tie rod connection node 19. The above-mentioned connection nodes are all fully bolted during on-site installation, which are less affected by the climate during construction, have a short construction period, require less manpower, and are easy to control construction quality.

[0034] like Figure 4-5As shown, the vault splicing node 3 includes a first connecting plate 4, a second connecting plate 5, a third connecting plate 13, a first stiffening rib A1, a second stiffening rib A2 and a third stiffening rib A3. The two sections of H-shaped steel of the cold-bent solid arch 1 are welded to the first connecting plate 4 and the second connecting plate 5 respectively. One end of the vault tie rod 2 is welded to the third stiffening rib A3, and the lower part is welded to the second stiffening rib A2. The vault tie rod 2, the third stiffening rib A3 and the second stiffening rib A2 are all welded to the third connecting plate 13. The first connecting plate 4 and the third connecting plate 13 are both fixed to the second connecting plate 5 by bolts. During the specific construction, the welded parts can be welded first, and then transported to the site and bolted according to requirements.

[0035] like Fig.12 As shown, the diagonal brace 18 includes a diagonal brace connecting plate 1801, an ear buckle 1802 and an adjustable bolt sleeve 1803. Two diagonal brace connecting plates 1801 are provided, and an ear buckle 1802 is provided at one end of the diagonal brace connecting plate 1801. The other ends of the two diagonal brace connecting plates 1801 are connected by an adjustable bolt sleeve 1803. After the end ear buckle 1802 is connected to the diagonal brace connecting plate 1801, the middle adjustable bolt sleeve 1803 is rotated, the diagonal brace is adjusted to fix it to a suitable position, and then the bolts on both sides of the bolt barrel are tightened. This installation method makes the structure have a certain degree of adjustability during installation, reducing the adverse effects of installation errors on the overall structure.

[0036] like Figure 6 As shown, the middle tie rod connection node 8 includes a fourth connection plate 9, a fifth connection plate 11, a sixth connection plate 14, a seventh connection plate 15, a fourth stiffening rib A4 and a fifth stiffening rib A5. The fourth connection plate 9 is welded to the web of the cold-bent solid web arch 1. During on-site installation, the flattened end of the middle flexible tie rod 7 is connected to the fourth connection plate 9 by bolts. Figure 8-9 As shown, the end of the middle rigid tie rod 6 is not flattened, but welded to the sixth connecting plate 14, and the fourth stiffening rib A4 and the seventh connecting plate 15 are welded below in sequence, and the fifth connecting plate 11 and the fifth stiffening rib A5 are welded to the side wall of the middle rigid tie rod 6 and the sixth connecting plate 14. During on-site installation, the sixth connecting plate 14 and the seventh connecting plate 15 are respectively connected to the web and the lower flange of the cold-formed solid web arch 1 by bolts, and the ear buckle 1802 of the diagonal brace 18 is connected to the fifth connecting plate 11 by bolts.

[0037] like Fig.10 As shown, the column base tie connection node 19 includes an eighth connecting plate 10, a ninth connecting plate 12, a tenth connecting plate 16 and a sixth stiffening rib A6, one end of the column base tie 17 is welded to the sixth stiffening rib A6 and the tenth connecting plate 16, the eighth connecting plate 10 and the ninth connecting plate 12 are welded to the web of the cold-bent solid arch 1, and during on-site installation, the eighth connecting plate 10 is connected to the tenth connecting plate 16 by bolts, and the ear buckle 1802 of the diagonal brace 18 is connected to the ninth connecting plate 12 by bolts.

[0038] In specific implementation applications, the rigid arch unit I, the dense tie rod connection unit II and the non-dense tie rod connection unit III are set as needed, and then the welded parts are prefabricated and welded in the factory. When installed on the construction site, they only need to be bolted. In this way, the construction of each component is less affected by the climate, the construction period is short, the manpower demand is small, and the construction quality is easy to control. In addition, the structure of the present invention is an arch structure, the force transmission is clear, the number of components used is small, the structure has a small dead angle, the span capacity is large, the steel is saved, and the space utilization rate is high; the number of components used is small, the component dead angle is small, the secondary rust removal and anti-corrosion workload is small, and the rust removal quality is easy to control.

[0039] The above is only a preferred embodiment of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention, which should also be regarded as the protection scope of the present invention.

[0040] The parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part that are not explained adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery and equipment all adopt conventional models in the prior art, and the circuit connection of the equipment adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembled large-span cold-formed solid-web arch structure, characterized in that: The cold-formed solid-web arch structure is a fully assembled structure, and each component is bolted during on-site installation, including a plurality of rigid arch units (I), closely spaced tie rod connection units (II) and non-closed tie rod connection units (III). Each rigid arch unit (I) is connected as a whole via a closely spaced tie rod connection unit (II) or a non-closed tie rod connection unit (III), that is, the two rigid arch units (I) at the ends of the cold-formed solid-web arch structure are connected via a closely spaced tie rod connection unit (II), and the remaining rigid arch units (I) located in the middle of the cold-formed solid-web arch structure are connected via non-closed tie rod connection units (III). The rigid arch unit (I) includes two cold-formed solid-web arches (1), diagonal braces (18), arch top ties (2), column foot ties (17) and a middle The rigid tie rod (6) is evenly distributed on the two cold-bent solid arches (1), and the middle rigid tie rod (6) and the diagonal brace (18) are evenly distributed, the middle part is provided with an arch tie rod (2), and the two ends are provided with column foot tie rods (17); the dense tie rod connection unit (II) and the non-dense tie rod connection unit (III) both include an arch tie rod (2), a column foot tie rod (17) and a middle flexible tie rod (7), the dense tie rod connection unit (II) and the non-dense tie rod connection unit (III) are evenly distributed with the middle flexible tie rod (7), the middle part is provided with an arch tie rod (2), and the two ends are provided with column foot tie rods (17), and the ends of the arch tie rod (2), the column foot tie rod (17) and the middle flexible tie rod (7) are connected to the cold-bent solid arch (1) of the rigid arch units (I) on both sides. ), the middle flexible tie rod (7) of the dense tie rod connection unit (II) is arranged more densely than that of the non-dense tie rod connection unit (III), the cold-bent solid arch (1) is formed by splicing a plurality of cold-bent H-shaped steel sections, the arch top tie rod (2) and the column foot tie rod (17) are both configured as long box-shaped cross sections, the diagonal brace (18), the middle rigid tie rod (6), and the middle flexible tie rod (7) are all configured as long tubes with round cross sections, the ends of the middle flexible tie rod (7) are flattened and punched, and the ends of the middle rigid tie rod (6) are not flattened, the cold-bent solid arch (1) is formed by splicing a plurality of cold-bent H-shaped steel sections, the arch top tie rod (2) and the cold-bent solid arch (1) are connected via an arch top splicing node (3), The middle rigid tie rod (6), the middle flexible tie rod (7), the diagonal brace (18) and the cold-bent solid arch (1) are connected via a middle tie rod connection node (8); the column foot tie rod (17), the diagonal brace (18) and the cold-bent solid arch (1) are connected via a column foot tie rod connection node (19); the arch crown joint node (3) comprises a first connection plate (4), a second connection plate (5), a third connection plate (13), a first stiffening rib (A1), a second stiffening rib (A2) and a third stiffening rib (A3); two sections of H-shaped steel of the cold-bent solid arch (1) are welded to the first connection plate (4) and the second connection plate (5) respectively; one end of the arch crown tie rod (2) is welded to the third stiffening rib (A3), and the lower end is welded to the second stiffening rib (A2);The arch tie rod (2), the third stiffening rib (A3) and the second stiffening rib (A2) are all welded to the third connecting plate (13); the first connecting plate (4) and the third connecting plate (13) are both fixed to the second connecting plate (5) by bolts; the diagonal brace (18) comprises a diagonal brace connecting plate (1801), an ear buckle (1802) and an adjustable bolt sleeve (1803); the diagonal brace connecting plate (1801) is provided with two, one end of the diagonal brace connecting plate (1801) is provided with an ear buckle (1802), and the two diagonal brace connecting plates are connected to each other. (1801) and the other end are connected by an adjustable bolt sleeve (1803), the middle tie rod connection node (8) comprises a fourth connection plate (9), a fifth connection plate (11), a sixth connection plate (14), a seventh connection plate (15), a fourth stiffening rib (A4) and a fifth stiffening rib (A5), the fourth connection plate (9) is welded to the web of the cold-bent solid web arch (1), the flattened end of the middle flexible tie rod (7) is connected to the fourth connection plate (9) by bolts, and the end of the middle rigid tie rod (6) is connected to the sixth connection plate (11). The plate (14) is welded, and the fourth stiffening rib (A4) and the seventh connecting plate (15) are welded below in sequence. The fifth connecting plate (11) and the fifth stiffening rib (A5) are welded to the side wall of the middle rigid tie rod (6) and the sixth connecting plate (14). The sixth connecting plate (14) and the seventh connecting plate (15) are respectively connected to the web and the lower flange of the cold-bent solid web arch (1) by bolts. The ear buckle (1802) of the diagonal brace (18) is connected to the fifth connecting plate (11) by bolts. The column foot tie rod connection node (19 ) comprises an eighth connecting plate (10), a ninth connecting plate (12), a tenth connecting plate (16) and a sixth stiffening rib (A6), one end of the column foot tie rod (17) is welded to the sixth stiffening rib (A6) and the tenth connecting plate (16), the eighth connecting plate (10) and the ninth connecting plate (12) are welded to the web of the cold-bent solid web arch (1), the eighth connecting plate (10) and the tenth connecting plate (16) are connected by bolts, and the ear buckle (1802) of the diagonal brace (18) is connected to the ninth connecting plate (12) by bolts.

2. The assembled large-span cold-formed solid-web arch structure according to claim 1, characterized in that: All components of the cold-formed solid-web arch structure are made of steel.

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