CN218562578U

CN218562578U - Large-span steel structure

Info

Publication number: CN218562578U
Application number: CN202222583900.6U
Authority: CN
Inventors: 陈华良; 蒋云; 吕智姿; 巩伟; 蒋鹏
Original assignee: Jiangsu Jietong Heavy Industry Co ltd
Current assignee: Jiangsu Jietong Heavy Industry Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-03-03
Anticipated expiration: 2032-09-28

Abstract

The utility model discloses a large-span steel structure, which comprises two trusses, a support column and a prestressed rope, wherein each truss comprises a plurality of sections of truss units, and a connecting component is arranged between every two adjacent truss units; the supporting columns comprise two end supporting columns and a middle supporting column, the end parts, which are relatively far away from each other, of the two trusses are respectively and fixedly connected with end part supporting columns, and the end parts, which are relatively close to each other, of the two trusses are jointly and fixedly connected with the middle supporting column; the prestressed ropes comprise two transverse ropes and a plurality of web ropes, two ends of each transverse rope are respectively fixed on the end supporting columns and the middle supporting column, and two ends of each web rope are respectively fixed between the truss and the transverse ropes. The span of the building is adjustable, the structure is stable, the bearing strength is high, the building is suitable for various building conditions, and the practicability is high.

Description

Large-span steel structure

Technical Field

The utility model relates to a building steel construction field specifically is a large-span steel construction.

Background

With the rapid development of social economy and the increasing improvement of the living standard of people, in order to build various large, strong and long ultra-large complex structures to meet the pursuit of people on living space, a large-span steel structure is developed. The steel structure house represents a new mode of house development in the future, and compared with the traditional brick-concrete structure and reinforced concrete frame structure, the steel structure house has obvious advantages in the aspects of use function, design, construction, comprehensive economic benefit and the like. For example, chinese patent No. CN207314538U discloses a large-span steel structure, which includes a truss unit, a support steel column, a support rod and a prestressed rope, and through the design and use of a beam, the number of chord sections can be increased or decreased according to actual needs, so as to realize span adjustability of the large-span steel structure; the longitudinal and transverse stability of the large-span steel structure is improved through the support rods and the prestressed ropes; the use through oblique web member and diagonal brace has increased the whole steadiness of large-span steel construction.

However, when the truss structure is applied to large buildings such as gymnasiums, factory buildings, airports and the like, particularly to pitched roof buildings, the truss units are connected by only one cross beam, so that the connection strength is low; when the span of the required steel structure is large, the middle part of the steel structure has no redundant support and the bearing capacity is poor; when a pitched roof building is involved, the prestressed rope has limited stress relieving capacity, and the stability of the whole steel structure is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art's defect, provide a large-span steel construction, its span is adjustable, and the structure is firm, and bearing strength is high and be applicable to multiple building condition, and the practicality is strong.

In order to solve the technical problem, the technical scheme of the utility model is that: a large-span steel structure comprises two trusses, supporting columns and prestressed ropes, wherein each truss comprises a plurality of truss units, and a connecting assembly is arranged between every two adjacent truss units; the supporting columns comprise two end supporting columns and a middle supporting column, the end parts, which are relatively far away from each other, of the two trusses are respectively and fixedly connected with end part supporting columns, and the end parts, which are relatively close to each other, of the two trusses are jointly and fixedly connected with the middle supporting column; the prestressed ropes comprise two transverse ropes and a plurality of web ropes, two ends of each transverse rope are respectively fixed on the end supporting columns and the middle supporting column, and two ends of each web rope are respectively fixed between the truss and the transverse ropes.

Further, a concrete structure of the truss unit is provided, the truss unit is composed of two groups of chord members, and the two chord members are fixedly connected through a connecting rod.

Further, a concrete structure of chord group is provided, chord group includes upper chord, lower chord, diagonal web member and bracing piece, the upper chord with the lower chord is parallel, diagonal web member has a plurality ofly, and a plurality of diagonal web members are connected the upper chord with between the lower chord, diagonal web member with the upper chord the lower chord forms the triangle-shaped structure between arbitrary one, be equipped with the bracing piece between two adjacent diagonal web members just the bracing piece vertical fixation is in the upper chord with between the lower chord.

Further, a concrete setting mode of the connecting component between the truss units is provided, and the connecting component is arranged between the corresponding upper chords of the two adjacent truss units and between the corresponding lower chords of the two adjacent truss units.

Further, a concrete structure of coupling assembling is provided, coupling assembling includes connecting seat, connector and bolt, the connecting seat is both ends hollow columnar structure just the internal diameter of connecting seat slightly is greater than the upper chord with the external diameter of lower chord, the connector is fixed the both ends of connecting seat, just be equipped with first locating hole on the connector, first locating hole can supply the bolt inserts.

Furthermore, in order to improve the connection strength between the truss units and realize secondary fixation, the connecting assembly further comprises a screw, a threaded through hole is formed in the connecting seat, and the lower end of the screw is propped against the outer surface of the upper chord or the lower chord after penetrating through the threaded through hole.

Furthermore, in order to enable the truss unit to be well matched with the connecting assembly, sleeve holes are formed in the end portions of the upper chord and the lower chord, and the connecting heads can be inserted into the sleeve holes; and the upper chord and the lower chord are provided with second positioning holes corresponding to the first positioning holes, and the bolt simultaneously penetrates through the first positioning holes and the second positioning holes.

Further, a concrete connection mode of the belly rope is provided, and two ends of the belly rope are respectively and fixedly connected to the lower chord and the transverse rope column.

Furthermore, in order to improve the supporting strength of the whole steel structure, reinforcing ribs are further arranged at the joints of the end parts of the trusses and the middle supporting column and/or the joints of the end parts of the trusses and the end part supporting column, and the reinforcing ribs are of V-shaped structures.

Further, in order to meet the construction requirements of the pitched roof building, the upper end of the middle supporting column is higher than the upper end of the end supporting column.

Further, in order to meet the construction requirement of the flat-top building, the heights of the upper ends of the middle supporting columns and the upper ends of the end supporting columns are equal.

By adopting the technical scheme, the utility model discloses following beneficial effect has:

by additionally arranging a middle support column and arranging a prestressed rope and a reinforcing rib which comprise a transverse rope and a belly rope, the transverse stability and the longitudinal stability of the whole steel structure can be well improved, so that the bearing capacity of the steel structure is improved; the two connected truss units are connected through the connecting assembly, and the connecting assembly can realize secondary fixation on the truss units, so that the connecting strength between the truss units is improved; the truss comprises the multistage truss unit, and the construction demand of different scenes is satisfied in the accessible increase and decrease truss unit, realizes that the span of steel construction is adjustable.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic structural view of a portion of the truss of FIG. 1;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is a schematic view of the connection assembly of FIG. 1;

FIG. 5 is a schematic view of the connection assembly of FIG. 4 in connection with an upper chord;

fig. 6 is a schematic structural diagram of a second embodiment of the present invention.

Reference numerals

1. Truss 11, truss unit 12, chord group 13, upper chord 14, lower chord 15, oblique web member 16, support rod 100, trepanning 101, second positioning hole 121, connecting rod 2, prestressed rope 21, transverse rope 22, web rope 3, connecting assembly 31, connecting seat 32, connecting head 33, bolt 34, screw 310, threaded through hole 320, first positioning hole 4, end support column 5, middle support column 6, reinforcing rib

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

Example one

As shown in fig. 1 to 5, in the present embodiment, a large-span steel structure is provided, which includes two trusses 1, end support columns 4 are fixedly connected to respective ends of the two trusses 1, which are relatively far away from each other, a middle support column 5 is fixed to respective ends of the two trusses 1, which are relatively close to each other, two end support columns 4 and one middle support column 5 jointly form a support column, and a prestressed rope 2 is connected between the two trusses 1, the end support columns 4 and the middle support column 5.

As shown in fig. 1, in the present embodiment, the two trusses 1 are substantially in a herringbone structure, the two end support columns 4 are disposed on opposite sides of the middle support column 5, and the upper end of the middle support column 5 is higher than the upper ends of the end support columns 4, so as to be suitable for a building with an inclined roof structure.

As shown in fig. 1-2, in the present embodiment, the truss 1 includes a plurality of truss units 11, and two adjacent truss units 11 are connected by a connecting assembly 3; each truss unit 11 further comprises two chord groups 12 which are arranged oppositely, a plurality of connecting rods 121 are connected between the two chord groups 12, and the connecting and fixing of the two chord groups 12 are completed by means of the connecting rods 121.

Specifically, as shown in fig. 2 to 3, the chord group 12 includes an upper chord 13, a lower chord 14, a diagonal web member 15, and a support bar 16, the upper chord 13 and the lower chord 14 are arranged in parallel, the diagonal web member 15 has a plurality, and the plurality of diagonal web members 15 are connected between the upper chord 13 and the lower chord 14. In order to improve the stability of the whole chord group 12, a triangular structure is formed between two adjacent diagonal web members 15 and any one of the two chords of the upper chord 13 and the lower chord 14. A support rod 16 is further arranged between two adjacent diagonal web members 15, two ends of the support rod 16 are respectively connected with the upper chord 13 and the lower chord 14, and the support rod 16 is perpendicular to the upper chord 13 and the lower chord 14.

Of course, the chord group 12 may also include an upper chord 13, a lower chord 14 and oblique web members 15, the upper chord 13 and the lower chord 14 are arranged in parallel, and a plurality of oblique web members 15 are connected between the upper chord 13 and the lower chord 14. The acute included angles between two adjacent diagonal web members 15 and between the upper chord member 13 and the lower chord member 14 are 60 degrees, that is, the diagonal web members 15 and the upper chord member 13 and the lower chord member 14 form an equilateral triangle structure, which can improve the stability of the chord group 12.

In a specific use process, the truss units 11 can be increased or decreased appropriately according to the field situation, namely the chord groups 12 are decreased or increased correspondingly, so that the integral span is adjustable; whole truss 1 is hollow out construction, has reduced steel use amount under the circumstances of guaranteeing its intensity, economical and practical.

As shown in fig. 1, the large-span steel structure provided by this embodiment further includes a reinforcing rib 6, where the reinforcing rib 6 is disposed at a connection between the truss 1 and the middle support column 5 and/or a connection between the truss 1 and the end support column 4. Specifically, the reinforcing ribs 6 are all of a V-shaped structure, and the included angle between the top angle of each reinforcing rib and the included angle between the end part of the truss 1 and the supporting column is equal to that between the top angle of each reinforcing rib and the supporting column; the reinforcing ribs 6 are fixedly connected with the lower chord 14 at the end part of the truss 1, the other end of the reinforcing ribs is fixed on the middle supporting column 5 or the end supporting column 4, and the longitudinal stability of the whole steel structure can be well improved due to the arrangement of the reinforcing ribs 6, so that the bearing capacity of the steel structure is improved.

As shown in fig. 4 to 5, in the present embodiment, the connecting member 3 between two adjacent truss units 11 includes a connecting seat 31, a connecting head 32, and a plug 33. The connecting seat 31 is a columnar structure with two solid ends and two hollow ends, the number of the connectors 32 is two, and the two connectors 32 are respectively fixed at two ends of the connecting seat 31. The end parts of the upper chord 13 and the lower chord 14 are provided with sleeve holes 100, and the sleeve holes 100 are used for inserting the connectors 32. The connector 32 is provided with a first positioning hole 320, the upper chord 13 and the lower chord 14 are provided with a second positioning hole 101 corresponding to the first positioning hole 320, and the bolt 33 simultaneously penetrates through the first positioning hole 320 and the second positioning hole 101. During use, after the connector 32 is inserted into the upper chord member and the lower chord member and the first positioning hole 320 is aligned with the second positioning hole 101, the pin 33 is sequentially inserted into the second positioning hole 101 and the first positioning hole 320, so that the two adjacent truss units 11 can be connected and fixed through the connecting component 3.

Specifically, the plug 33 may have a structure (not shown in the drawings) including a pin body, the upper end of the pin body is provided with a limiting step, the lower end of the pin body is provided with a through hole, and a safety pin is movably installed in the through hole; when the safety pin is used, one end of the pin body sequentially penetrates through the first positioning hole 320 and the second positioning hole 101, and then the safety pin is installed in the through hole, so that the movement of the plug pin 33 is limited through the mutual matching of the limiting boss and the safety pin, and the plug pin 33 is effectively prevented from being separated; or the lower end of the pin body is in a thread structure and is matched with a nut to complete locking and fixing, or other structures known by persons skilled in the art.

As shown in fig. 4 to 5, in the present embodiment, the inner diameter of the connecting seat 31 is slightly larger than the outer diameters of the upper chord 13 and the lower chord 14, so that the upper chord 13 and the lower chord 14 can be inserted into the connecting seat 31 after being connected with the connecting head 32. The connecting assembly 3 further includes a plurality of screws 34, the connecting seat 31 is provided with a plurality of threaded through holes 310, and the lower ends of the screws 34 penetrate through the threaded through holes 310 and then abut against the outer surface of the upper chord 13 or the lower chord 14. After the chord is inserted into the connecting seat 31 and the bolt 33 is fixed, the bolt 34 is tightened to realize the secondary fixation of the truss units 11 and the connecting component 3, so that the connecting strength between the two truss units 11 can be improved well.

As shown in fig. 1 and 3, the prestressed rope 2 includes two transverse ropes 21 and a plurality of web ropes 22. The two ends of the transverse ropes 21 are respectively fixed on the end supporting columns 4 and the middle supporting column 5, and the belly ropes 22 are fixedly connected between the truss 1 and the transverse ropes 21. Specifically, the belly line 22 is fixedly connected between the lower chord 14 and the lateral line 21. The web ropes 22 and the transverse ropes 21 form a net structure, so that the overall transverse stability and longitudinal stability can be improved well.

Example two

The present embodiment has substantially the same structure as the present embodiment except that, as shown in fig. 6, the upper ends of the central support columns 5 and the upper ends of the end support columns 4 are at the same height in the present embodiment so as to be suitable for the construction of a flat roof structure.

The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a large-span steel construction, includes two trusss (1), support column and prestressed rope (2), its characterized in that: the truss (1) comprises a plurality of sections of truss units (11), and a connecting assembly (3) is arranged between every two adjacent truss units (11); the supporting columns comprise two end supporting columns (4) and a middle supporting column (5), the end parts, which are relatively far away from each other, of the two trusses (1) are respectively and fixedly connected with the end supporting columns (4), and the end parts, which are relatively close to each other, of the two trusses (1) are jointly and fixedly connected with the middle supporting column (5); the prestressed rope (2) comprises two transverse ropes (21) and a plurality of belly ropes (22), two ends of each transverse rope (21) are fixed to the end supporting columns (4) and the middle supporting column (5) respectively, and two ends of each belly rope (22) are fixed between the truss (1) and the corresponding transverse rope (21) respectively.

2. The large-span steel structure of claim 1, wherein: the truss unit (11) is composed of two groups of chord members (12), and the two groups of chord members (12) are fixedly connected by a connecting rod (121); the chord group (12) comprises an upper chord (13), a lower chord (14), a plurality of oblique web members (15) and support rods (16), the upper chord (13) and the lower chord (14) are arranged in parallel, the oblique web members (15) are connected between the upper chord (13) and the lower chord (14), and a triangular structure is formed between any two adjacent oblique web members (15) and any one of the upper chord (13) and the lower chord (14); a support rod (16) is arranged between two adjacent diagonal web members (15), and the support rod (16) is vertically fixed between the upper chord member (13) and the lower chord member (14).

3. The large-span steel structure of claim 2, wherein: connecting components (3) are arranged between corresponding upper chords (13) of two adjacent truss units (11) and between corresponding lower chords (14) of two adjacent truss units (11).

4. A large span steel structure according to claim 3, characterized in that: coupling assembling (3) are including connecting seat (31), connector (32) and bolt (33), connecting seat (31) are both ends hollow columnar structure just the internal diameter of connecting seat (31) slightly is greater than go up chord (13) with the external diameter of lower chord (14), connector (32) are fixed the both ends of connecting seat (31), just be equipped with first locating hole (320) on connector (32), first locating hole (320) can supply bolt (33) insert.

5. The large-span steel structure of claim 4, wherein: the connecting assembly (3) further comprises a screw (34), a threaded through hole (310) is formed in the connecting seat (31), and the lower end of the screw (34) penetrates through the threaded through hole (310) and then abuts against the outer surface of the upper chord (13) or the outer surface of the lower chord (14).

6. The large-span steel structure of claim 4, wherein: the end parts of the upper chord (13) and the lower chord (14) are provided with sleeve holes (100), and the sleeve holes (100) can be used for inserting the connectors (32); the upper chord (13) and the lower chord (14) are provided with second positioning holes (101) corresponding to the first positioning holes (320), and the bolt (33) penetrates through the first positioning holes (320) and the second positioning holes (101) at the same time.

7. The large-span steel structure of claim 2, wherein: two ends of the belly rope (22) are respectively fixed on the lower chord (14) and the transverse rope (21).

8. The large-span steel structure of claim 1, wherein: the truss structure is characterized in that a reinforcing rib (6) is further arranged at the joint of the end part of the truss (1) and the middle supporting column (5) and/or the joint of the end part of the truss (1) and the end part supporting column (4), and the reinforcing rib (6) is of a V-shaped structure.

9. The large-span steel structure of claim 1, wherein: the upper end of the middle supporting column (5) is higher than the upper end of the end supporting column (4).

10. The large-span steel structure of claim 1, wherein: the upper end of the middle supporting column (5) is equal to the upper end of the end supporting column (4) in height.