CN106436927B - Universal assembly type connecting system for two-way bending box-shaped section rods - Google Patents
Universal assembly type connecting system for two-way bending box-shaped section rods Download PDFInfo
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- CN106436927B CN106436927B CN201611066339.7A CN201611066339A CN106436927B CN 106436927 B CN106436927 B CN 106436927B CN 201611066339 A CN201611066339 A CN 201611066339A CN 106436927 B CN106436927 B CN 106436927B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2448—Connections between open section profiles
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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Abstract
A system for the universal fitting and connection of rods of a section of a two-way bent box type, comprising: a. a pair of symmetrically disposed end plates: an end plate A (1) and an end plate B (2); b. n sets of sleeve bolt assemblies (3); and so on. The invention has simple structure, convenient processing and reliable connection, does not damage the appearance effect of the box-shaped section bar and keeps higher sealing property; the method is not developed aiming at specific nodes, has wide design range of the rotational rigidity of the connecting surface, can be used for connecting various nodes and rod piece midspans, corners or turning positions, and has higher universality; the material is saved, the processing is simple, the production cost is lower, and the popularization and the application are convenient.
Description
Technical Field
The invention relates to the field of relevant structures which adopt box-shaped section rods as force-bearing rod pieces in civil engineering, power transmission and transformation engineering, storage goods shelves, ship manufacturing and the like, in particular to a connecting technology between box-shaped section members in a civil engineering steel structure.
Background
The box-section rod is a general name of various thin-wall square tubes, rectangular tubes or assembly-welded box-section rods manufactured by cold bending, hot rolling or welding and the like, and has extremely excellent section characteristics. From the view of mechanical property, the single-direction bending rigidity is better than that of a circular section, and the axial torsional rigidity and the weak-axis bending rigidity are better than those of an I-shaped section, a groove-shaped section, a Z-shaped section and other open sections; from the appearance effect, the one-way sight is smaller than that of the circular section, and the one-way sight is more neat than that of the opening section; from the view of weather resistance, the sealing ring has the same tightness of the section of the ring, and is convenient for surface anticorrosion treatment and dirt cleaning. For the two-way bending rod piece, the height-width ratio of the cross section can be adjusted along with the corresponding bending moment ratio, the material utilization rate is higher, and the bearing capacity and the overall stability are better. The material is widely applied to structures such as high-rise steel frames, large-span space reticulated shells, ultrahigh power transmission towers, storage shelves, bridges and the like, and is mostly low-carbon steel, low-alloy steel or aluminum alloy and the like.
Although the box-shaped section rod has excellent performance, the development of a node or a connecting technology is relatively lagged, and the popularization, the application and the assembly development are severely restricted by mainly depending on welding. The existing assembly type connecting technical means aiming at the bidirectional bending box-shaped section rod piece is few, and is accompanied with node development. The common forms mainly comprise an outward extending end plate (similar to an outer flange) connection, a box wall perforated flush end plate connection, a through bolt sleeve connection, an external reinforced connection and the like. The end plates with the same level with the tank wall holes are connected and provided with built-in bolts through the tank wall holes, so that the end plates are not suitable for small-section rods, and the holes can cause local stress concentration and weaken the bearing capacity and self-sealing performance of the rod piece; the outward extending end plate connection obviously changes the appearance outline of the rod piece; the through bolt sleeve connection and the external reinforcement connection have certain influence on the appearance and the section strength of the rod piece.
In summary, the existing assembly type connecting technology has the defects that the inherent performance advantages of the box-shaped section rod piece are damaged or weakened to different degrees, the universality is insufficient, and part of the technology is poor in economical efficiency.
Disclosure of Invention
Aiming at the development current situation of the assembly type connecting technology of the box-section rod piece, the invention provides a universal assembly type connecting system for the two-way bending box-section rod piece, which not only keeps the appearance effect (without the damage of the appearance outline of the rod piece) and the weather resistance advantage of the box-section rod piece, avoids the hole opening of the wall of the rod piece box, but also can provide higher section biaxial bending resistance and axial torsion resistance bearing capacity. By reasonably designing parameters such as the diameter and the number of the high-strength bolts, the thickness of the end plate and the like, the connecting system can also realize the adjustment of the connecting rigidity in a wider range. More importantly, the connecting system has the remarkable advantages of few components, simple processing technology, strong error tolerance, low manufacturing cost, strong universality, wide popularization and the like.
The invention is realized by adopting the following technical scheme.
A fabricated connecting system for the universal use of two-way bent box section bars, the system comprising: a. a pair of symmetrically disposed end plates: an end plate A and an end plate B; b. n groups of sleeve bolt assemblies;
the structure of the end plate is that one surface of the end plate is a contact joint surface, the other surface of the end plate is a rod end fixing surface fixedly connected with a rod end of the box-shaped section, a contact pressure-bearing flange is arranged along the peripheral edge of the contact joint surface, N bolt holes are uniformly distributed in a region between the outer edges of the end plate, namely a bolt hole A is formed in the end plate A, and a bolt hole B is formed in the end plate B; after the contact joint surfaces of the corresponding end plate A and the end plate B are oppositely aligned and contacted, the opposite notches on the contact pressure-bearing flanges of the end plate A and the end plate B are combined to form M installation operation holes;
each group of sleeve bolt assembly comprises 1 bolt rod, 1 outer hexagonal sleeve, 2 pins and 1 annular gasket; the smooth section of the middle part of the bolt rod is provided with a pair of sliding chutes which are symmetrical about the axis, and the widths of the sliding chutes are matched with the diameters of the pins; the outer hexagonal sleeve is a regular hexagonal prism with the evacuated middle part, the outer hexagonal prism surface and the inner cylindrical cavity share the same axis, the inner wall is smooth, and the outer hexagonal sleeve is sleeved on the bolt rod; the middle parts of a group of opposite outer cylindrical surfaces of the outer hexagonal sleeve are provided with penetrating pin threaded holes, and the hole diameter of each pin threaded hole is matched with the pin; the diameter of an inner hole of the annular gasket is matched with the diameter of the bolt rod, the annular gasket is arranged between a nut of the bolt rod and the end plate A, and the thread section of the bolt rod is screwed into the bolt hole B arranged on the end plate B.
The invention also comprises M groups of cover plate assembly parts, wherein each group of cover plate assembly parts comprises 1 cover plate and is used for sealing the fixed mounting operation hole.
The middle hole is arranged in the area without the bolt hole in the middle of the end plate, and the edge of the middle hole is provided with a contact pressure-bearing flange.
The invention adds end plate stiffening ribs between bolt holes on the contact joint surface of the end plate.
The invention adds a local thickening frustum around the bolt hole on the rod end fixing surface of the end plate B.
The packaging structure of the cover plate is characterized in that oblique angles are reserved at four corners of the mounting operation hole, and oblique angle threaded holes are formed in the oblique angles; the cover plate assembly also comprises a countersunk cover plate fixing screw; corner bolt holes are formed in four corners of the cover plate; the countersunk head cover plate fixing screws sequentially penetrate through the corner bolt holes and the bevel angle threaded holes so as to seal the fixing cover plate.
The packaging structure of the cover plate can also be characterized in that a fixing lug plate is arranged inside the edge of the mounting operation hole, and a lug plate threaded hole is formed in the fixing lug plate; the cover plate assembly also comprises a countersunk cover plate fixing screw; the edge of the cover plate is provided with a corresponding cover plate bolt hole; the countersunk head cover plate fixing screws sequentially penetrate through the cover plate bolt holes and the lug plate threaded holes so as to seal the fixing cover plate.
The packaging structure of the cover plate can also be that a fixing lug plate is arranged on the periphery of the cover plate, and a cover plate bolt hole is arranged on the fixing lug plate; the side surface of the end plate contacting the pressure-bearing flange is provided with a corresponding flange threaded hole; the cover plate assembly also comprises a countersunk cover plate fixing screw; the countersunk head cover plate fixing screws sequentially penetrate through the lug plate bolt holes and the flange threaded holes so as to seal the fixing cover plate.
A method for assembling a general assembly type connecting system for a two-way bending box-type section rod comprises the following steps,
1) Before the end plate A and the rod end are welded, a bolt rod is taken to sequentially penetrate through 1 annular gasket and corresponding holes in the end plate A, so that a sliding groove in the bolt rod is positioned on the same side of a contact pressure-bearing flange on the end plate A, and the annular gasket is positioned on the other side; then, an outer hexagonal sleeve is sleeved on the threaded end of the bolt rod to the position of the sliding groove, the outer hexagonal sleeve is rotated to enable the direction of a threaded hole in the outer hexagonal sleeve to be consistent with that of the sliding groove, a pin is screwed in from the threaded hole in the outer hexagonal sleeve and extends into the sliding groove in the bolt rod, and therefore coaxial relative rotation between the outer hexagonal sleeve and the bolt rod is limited;
2) Connecting and fixing the rod end fixing surfaces of the end plate A and the end plate B (provided with the sleeve bolt assemblies) with corresponding box-shaped section rod ends respectively in a factory, and integrally transporting to an installation site;
3) When the end plate A is correspondingly connected with the end plate B, the positions of the corresponding rod ends are adjusted firstly to ensure that the two end plates are aligned oppositely, then the outer hexagonal sleeve is slid to a proper position, and the bolt rod is manually screwed into one part of the corresponding threaded hole on the end plate B; then, screwing the outer hexagonal sleeve by using a wrench to drive the bolt rod to rotate until a set torque is reached;
4) And then taking out the wrench from the mounting operation hole, and mounting the cover plate assembly to complete the fixed connection of the two sections of box-shaped section rods.
Compared with the prior art, the universal assembly type connecting system for the two-way bending box-shaped section rod piece has the advantages that the mounting operation holes are reasonably arranged between the connecting end plates, and the bearing capacity of the rod piece is not weakened; the joint system has higher bidirectional bending rigidity and bearing capacity through the joint work of the sleeve bolt assembly and the contact pressure-bearing flange; the contact friction between the contact pressure-bearing flanges and the anti-sliding action of the cover plate also endow the connecting system with higher cross section shearing resistance and torsion resistance bearing capacity; the connecting system is simple in structure, convenient to process and reliable in connection, does not damage the appearance effect of the box-shaped section rod, and keeps higher sealing performance; the method is not developed aiming at specific nodes, has wide design range of the rotational rigidity of the connecting surface, can be used for connecting various nodes and rod piece midspans, corners or turning positions, and has higher universality; the material is saved, the processing is simple, the production cost is lower, and the popularization and the application are convenient.
Drawings
FIG. 1 is a schematic view of a 16-bolt assembled connection structure in the universal connection system of the present invention (wherein the upper part is an exploded view of the components thereof, and the lower part is an assembled view).
Fig. 2 is a perspective view showing the detailed structure of a pair of 16-bolt end plates in the universal fabricated connection system according to the present invention (wherein fig. 2a and 2b are schematic structural views from two different perspectives).
Fig. 3 is a perspective view showing the detailed structure of a pair of 8-bolt end plates in the universal assembled connecting system according to the present invention (wherein fig. 3a and 3b are schematic structural views from two different perspectives).
Fig. 4 is a perspective view showing the detailed structure of a pair of 4-bolt end plates in the universal assembled connecting system according to the present invention (wherein fig. 4a and 4b are schematic structural views from two different perspectives).
Fig. 5 is a schematic view of a typical sleeve bolt assembly connecting structure in the universal assembled connecting system according to the present invention (wherein the upper portion is an assembled overall structure, and the lower portion is an exploded perspective view).
FIG. 6 is an exploded perspective view of the access panel assembly and components of the universal modular connection system of the present invention.
FIG. 7 is a schematic view of a 4-bolt assembled connection structure in the universal connection system of the present invention (wherein the upper part is an exploded view of the components thereof, and the lower part is an assembled view).
FIG. 8 is a schematic view of a 6-bolt assembled connection structure in the universal connection system of the present invention (wherein the upper part is an exploded view of the components thereof, and the lower part is an assembled view).
FIG. 9 is a schematic view of an 8-bolt assembled connection structure in the universal connection system of the present invention (wherein the upper portion is an exploded view of the components thereof, and the lower portion is an assembled view).
Fig. 10 is a perspective view of the universal assembled connecting system of the present invention applied to two assembled frame structure systems with box-type cross-sections (fig. 10a is a structural effect of the present invention in which the beam connection is disposed in the span, and fig. 10b is a structural effect of the present invention in which the beam connection is disposed at a distance from the beam end).
Fig. 11 is a perspective view illustrating an embodiment of the universal fabricated connecting system according to the present invention for connecting a bridge deck girder and a pier in a T-shaped rigid frame bridge.
Fig. 12 is a perspective view of an embodiment of the universal mounting connection system of the present invention for use in connection between arch bridge segment ribs.
The parts in the drawings are numbered as follows: 1. an end plate A; 2. an end plate B; 3. a sleeve bolt assembly; 4. a cover plate assembly; 5. contacting the faying surface; 6. a rod end fixing surface; 7. a box-section rod end; 8. contacting the pressure-bearing flange; 9. a rod end fixing flange; 10. installing an operation hole; 11. a bolt hole A; 12. a bolt hole B; 13. a bolt shank; 14. a hexagonal sleeve; 15. a pin; 16. an annular gasket; 17. a cover plate; 18. a cover plate fixing screw; 19. an end plate stiffener; 20. locally thickening the frustum; 21. a middle hole; 22. a chute.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
A fabricated connecting system for the universal use of two-way bent box section bars, the system comprising: a. a pair of symmetrically disposed end plates: an end plate A1 and an end plate B2; b. n sets of sleeve bolt assemblies 3; the end plate has a structure that one surface of the end plate is a contact joint surface 5, and the other surface of the end plate is a rod end fixing surface 6 fixedly connected with a box-shaped section rod end 7, as shown in fig. 3 and 4. A contact pressure-bearing flange 8 is arranged along the peripheral edge of the contact joint surface 5; a rod end fixing flange 9 is provided on the rod end fixing surface 6 adjacent to the periphery as required, as shown in FIGS. 1 to 4. N bolt holes are uniformly distributed in the area between the outer edges of the end plates, namely N bolt holes A11 are formed in the end plate A1, and N bolt holes B12 are formed in the end plate B2. After the contact joint surfaces 5 of the corresponding end plates A1 and B2 are aligned and contacted oppositely, the contact pressure-bearing flanges 8 of the end plates A1 and B2 are correspondingly notched and combined to form M installation operation holes 10.
Each sleeve bolt assembly 3 is structurally characterized by comprising 1 bolt rod 13, 1 outer hexagonal sleeve 14, 2 pins 15 and 1 annular gasket 16; the smooth section of the middle part of the bolt rod 13 is provided with a pair of sliding grooves 22 which are symmetrical about the axis, and the width of each sliding groove 22 is matched with the diameter of the pin 15; the outer hexagonal sleeve 14 is a regular hexagonal prism with an evacuated middle part, the surface of the outer hexagonal prism and the inner cylindrical cavity share the same axis, the inner wall is smooth, the size of the bottom surface of the outer hexagonal prism refers to the outline size of a standard hexagonal nut, and the outer hexagonal sleeve is sleeved on the bolt rod 13; the middle parts of one group of opposite outer cylindrical surfaces of the outer hexagonal sleeve 14 are provided with penetrating pin threaded holes, and the hole diameter of each pin threaded hole is matched with the pin 15; the thread section of the bolt rod 13 is screwed into a bolt hole B12 arranged on the end plate B2, and during installation and construction, the construction torque of the high-strength bolt rod 13 can be controlled by shearing the pin 15.
The bolt hole A11 on the end plate A1 is a unthreaded hole wall, as shown in FIGS. 2 to 4, the hole diameter is 6 mm-16 mm larger than the diameter of the bolt rod 13; the bolt holes B12 in the end plate B2 are threaded holes, the diameter and the threads of which are matched with the bolt rods 13 to form a reliable fastening connection.
As shown in FIG. 5; a gap (such as 6 mm-16 mm) is arranged between the bolt hole A11 on the end plate A1 and the high-strength bolt rod 13 so as to improve the error tolerance of the connecting system, and meanwhile, in order to ensure that the compressive stress can be uniformly and effectively transferred, a movable annular gasket 16 is additionally arranged between a round nut of the high-strength bolt rod 13 and the rod end fixing surface 6 of the end plate A1, and the thickness of the gasket is not less than the diameter difference between the bolt hole A11 and the high-strength bolt rod 13.
The invention also comprises M groups of cover plate assemblies 4, wherein each group of cover plate assembly 4 comprises 1 cover plate 17 for sealing and fixedly installing the operation hole 10 and improving the shearing resistance and torsion resistance bearing capacity of the connecting surface.
N and M are natural numbers, and M may be not less than 2.
Referring to fig. 2, 3 and 4, the end plate is manufactured by casting or forging a general-purpose blank from a metal having a strength not lower than that of the base material of the rod member and machining the general-purpose blank.
For a larger end plate with the short side length of more than 350mm, as shown in fig. 2, a middle hole 21 can be reserved in the middle of the larger end plate without a bolt to reduce the weight, and a contact pressure-bearing flange 8 is arranged at the edge of the middle hole 21; and for the small end plate with the short side length less than 350mm, the necessity of opening the hole in the middle is reduced.
As shown in fig. 1, 7 to 9, the shape of the installation operation hole 10 may be a rounded rectangle, an oblong or oval, or the like. The installation operation holes 10 are arranged so as to facilitate torque construction of all the sleeve bolt assemblies 3, the size and the number of the installation operation holes 10 are reduced as much as possible, and the installation operation holes 10 are arranged in a section with low normal stress on the contact pressure-bearing flange 8 as much as possible.
The thickness of the cover plate 17 is designed according to the requirement of shear bearing, and the contour, size and number of the cover plate 17 should correspond to the installation operation hole 10, so as to ensure that the cover plate 17 can be conveniently embedded into the installation operation hole 10 in a gap sealing manner, and fixed by a countersunk cover plate fixing screw 18.
The cover plate 17 of the invention has a packaging structure that four corners of the mounting operation hole 10 are provided with bevel angles (the thickness is not less than 2 mm), and the bevel angles are provided with bevel angle threaded holes; the cover assembly 4 also includes countersunk cover plate set screws 18; corner bolt holes are arranged at four corners of the cover plate 17; countersunk cover plate fixing screws 18 pass through the corner bolt holes, the oblique threaded holes in sequence to close the fixing cover plate 17.
The packaging structure of the cover plate 17 can also be that a fixed lug plate is arranged inside the edge of the installation operation hole 10, and a lug plate threaded hole is formed in the fixed lug plate; the cover plate assembly 4 also includes countersunk cover plate set screws 18; the edge of the cover plate 17 is provided with a corresponding cover plate bolt hole; countersunk cover plate fixing screws 18 pass through the cover plate bolt holes and the lug plate threaded holes in order to close the fixing cover plate 17. That is, the technical feature of this paragraph is that a fixing ear plate is disposed inside the edge of the installation operation hole 10, and finally, the fixed cover plate 17 is closed.
The cover plate 17 of the present invention may have a structure in which a fixing lug is provided around the cover plate 17, and a cover plate bolt hole is provided in the fixing lug; the side surface of the end plate contacting the pressure-bearing flange is provided with a corresponding flange threaded hole; the cover plate assembly 4 also includes countersunk cover plate set screws 18; countersunk cover plate fixing screws 18 pass through the lug plate bolt holes and the flange threaded holes in order to close the fixing cover plate 17. Namely, the technical feature of this paragraph is to provide a fixing ear plate outside the edge of the installation operation hole 10, and finally realize the closing and fixing of the cover plate 17.
The design scheme of the installation operation hole, the cover plate assembly 4 and the added bevel angle can be taken as an optimal scheme, the main protection scope of the invention is not limited, other equivalent transformation schemes aiming at sealing the installation operation hole or improving the shearing resistance bearing capacity of the connecting surface, such as changing the shape of the cover plate and the corresponding installation operation hole, adding a fixed lug plate and the like, can be various and are all in the protection scope of the patent.
The installation of the operation hole and the cover plate assembly 4 are not necessary, and the installation of the operation hole, the cover plate assembly 4 and corresponding fixing construction measures can be eliminated together under the conditions of low requirements on appearance and weather resistance and small shearing force of the connecting surface.
The thickness of the contact pressure-bearing flange 8 is determined according to the local pressure-bearing strength calculation of the contact surface, and the pressure-bearing contact surface is processed according to the connection contact surface of the common pressure-bearing type high-strength bolt, planed and kept clean.
The rod end fixing flange 9 is used for supporting an arc plate when the end plate is connected with the box-shaped section rod end 7 in a welding mode; when the end plate and the rod end 7 are fastened and connected by screws, the end plate and the rod end function as an inner connecting plate; when the end plate and the box-section rod end 7 are connected by a self-tapping screw or a shooting screw, the end plate and the box-section rod end function as a connecting plate, and therefore the cross section size of the rod end fixing flange 9 is designed according to a corresponding connection mode.
The thickness of the end plate A1 and the end plate B2, the number, the diameter and the distance of the bolt rods 13 are designed according to the requirements of the integral rotational rigidity, the deformation and the bearing capacity limit of a connecting surface; the number and arrangement of the boltholes a 11 and B12 should also take into account the internal force characteristics that need to be transmitted.
In order to reduce the thickness of the end plates A1 and B2 or to improve the overall rotational stiffness of the connection, end plate stiffeners 19 may be added between the bolt holes on the contact joint surfaces 5 of the end plates A1 and B2, as shown in fig. 4a and 4B, to reduce the deformation of the end plates under high bolt tension.
In addition, when the thickness of the end plate B2 is smaller than the minimum length of the engaged thread required for the bolt rod 13 to bear the maximum axial tension, in order to avoid the separation of the thread between the bolt rod 13 and the bolt hole B12 due to the too short engaged thread, a local thickening frustum 20 may be additionally arranged on the rod end fixing surface 6 of the end plate B2 around the bolt hole, as shown in fig. 3B, to ensure the length of the engaged thread.
In order to ensure the overall appearance effect of the rod piece, when the end plates A1 and B2 are orthogonal to the axis of the rod piece, as shown in figures 7 to 9, the external contour shape and size are consistent with the cross section of the connected rod piece; and if the axis of the end plate A1 and the axis of the end plate B2 are oblique to the axis of the connected rod piece, the shape and the size of the outer contour are consistent with the corresponding oblique section of the connected rod piece.
For the bidirectional bending stress rod piece bolt which is usually arranged along the inner side of the wall of the cross section box, the number N of the sleeve bolt assembly 3 is more than even number, such as 4, 6, 8 and 10, 8230; the number M of the groups of the cover plate assembly 4, i.e., the number of the mounting operation holes 10, is often an even number in consideration of the sectional symmetry due to the variation in the number and arrangement of the bolts. Therefore, the values of N and M will vary as the cross-sectional size of the member increases, and the bolt diameter and arrangement should be adjusted to optimize the arrangement of the mounting operation holes 10 and reduce the total length of the opening while satisfying the structural performance requirements.
A method for assembling a universal assembly connecting system for rods with two-way bent box-type sections comprises the following steps,
1) Before the end plate A1 and the rod end are welded, a bolt rod 13 is taken to sequentially pass through 1 annular gasket 16 and corresponding holes in the end plate A1, so that a sliding groove 22 in the bolt rod 13 is positioned on the same side of a contact pressure-bearing flange 8 on the end plate A1, and the annular gasket 16 is positioned on the other side; then, the outer hexagonal sleeve 14 is sleeved on the threaded end of the bolt rod 13 to the position of the sliding groove 22, the outer hexagonal sleeve 14 is rotated to enable the position of the threaded hole on the outer hexagonal sleeve to be consistent with the position of the sliding groove 22, the pin 15 is screwed in from the threaded hole on the outer hexagonal sleeve 14 and extends into the sliding groove 22 on the bolt rod 13, and therefore coaxial relative rotation between the outer hexagonal sleeve 14 and the bolt rod 13 is limited;
2) Connecting and fixing the end plate A1 and the end plate B2 of which the sleeve bolt assemblies 3 are installed on the rod end fixing surface 6 with corresponding box-shaped section rod ends 7 respectively in a factory, and integrally transporting to an installation site;
3) When the end plate A1 is correspondingly connected with the end plate B2, the position of the corresponding rod end is adjusted firstly to ensure that the two end plates are aligned oppositely, then the outer hexagonal sleeve 14 is slid to a proper position, and the bolt rod 13 is manually screwed into a part of the corresponding threaded hole on the end plate B2; then, screwing the outer hexagonal sleeve 14 by using a wrench to drive the bolt rod 13 to rotate until a set torque force is reached;
4) And then taking out the wrench from the mounting operation hole 10, and mounting the cover plate assembly 4 to finish the fixed connection of the two sections of box-shaped section rods.
The invention is used for explaining under different working conditions.
Referring to fig. 10, in a first embodiment of the present invention: the invention relates to a box-type section assembly type frame based on the general assembly type connecting technology. The box-shaped section is also the preferred section form in the frame structure, but the limitation of the assembly type connecting technology leads the prior assembly type frame to adopt an H-shaped or I-shaped section. The universal assembly type connecting technology can break through the restriction with economic cost, and a universal box-section assembly type frame system is formed. As shown in fig. 10, the universal fabricated connecting system of the present invention is disposed near the recurved point of the box-section frame column, and the connecting end plate is designed according to the characteristics of the internal force of the column, so that the structural performance similar to that of a welded integral column can be realized. For the convenience of installation and construction, the end plate A1 is connected with the lower end of the upper column section, and the end plate B2 is fixed at the upper end of the lower column section. Similarly, the connection technology of the invention is applied to the frame beam, and the sectional assembly can be realized. There are two general types according to the position of the connecting surface on the beam: 1) The first is to arrange the universal joint system of the present invention in the span of the frame beams as shown in fig. 10 a. Only 1 set of connecting system needs to be arranged in each frame beam span, the end plate A1 and the end plate B2 can be exchanged, and only the matching of each connecting surface needs to be ensured. The assembly type frame system has few connecting surfaces, quick installation and large integral rigidity, but has higher component transportation requirement and is similar to a common assembly type frame system. 2) In the second embodiment, as shown in fig. 10b, different from the former embodiment, two sets of the connecting system of the present invention are respectively installed at both ends of the beam, and the distance between the connecting surfaces is adjusted from the beam end to the middle. Each frame beam is divided into three sections, including a longer middle beam body and small short beams with two ends respectively separated. One end of the small short beam is welded with the frame column with equal strength, and the other end is fixed with an end plate B2; and the two ends of the middle beam body are both matched and fixed with end plates A1. The beam sections welded on the frame columns are short, so that the frame columns are convenient to transport and hoist; moreover, through reasonable design of the rotational stiffness and the ultimate bending moment of the connecting system, an appointed plastic hinge can be formed, and the connecting system is similar to a dog-bone frame beam and has better static characteristics and seismic and energy consumption resistance. In practical application, the position and the mechanical property of the assembly type connecting system are reasonably adjusted from the aspect of overall structural performance, and an assembly type frame system with excellent structural performance, economy and high efficiency can be designed. The embodiment is particularly suitable for various multi-story high-rise steel structure buildings, ultrahigh transmission towers, storage shelves and other structures.
Referring to fig. 11 and 12, a second embodiment of the invention: the universal assembly type connecting system is used for realizing the assembly of the continuous rigid frame bridge and the arch bridge with the box-shaped section. The arch ribs of the arch bridge, and the bridge deck main beam and the bridge piers of the continuous rigid frame bridge always need to bear large bidirectional bending moment, and the adoption of box-shaped section members is the most ideal choice. In the existing continuous rigid frame bridge, for a component with a larger cross-sectional size, a box wall is usually perforated, and constructors enter a box chamber for installation and construction; for components with a small cross-sectional dimension, box-sections are often abandoned due to the limitations of the connection technology. By applying the universal assembly type connecting technology, the assembly of the box-shaped section component can be conveniently realized without opening holes on the wall of the box, and the problems are solved. As shown in fig. 11, for a T-shaped rigid frame with a box-shaped cross section, the universal assembly type connection system of the present invention can be disposed in a section with a small bending moment, and the continuous T-shaped rigid frame is divided into smaller sections, which is convenient for factory production and quick installation; similarly, as shown in fig. 12, by reasonably arranging and designing the connecting surface, the technology of the present invention can also segment the longer and curved arch rib, which is convenient for industrial production and quick installation, and meanwhile, the great cost in appearance and mechanical property is not worried about. When the sizes of the sections of the arch ribs, the bridge deck and the piers of the bridge are increased, the sections can be always decomposed into a combination of a plurality of small-size box chambers, or a large-sized special end plate is designed according to the assembly connection concept of the invention. Of course, the assembly type connecting technology can also be used for bridges with other structural types, such as simply supported girder bridges, continuous girder bridges, cable-stayed bridges or basket arch bridges.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or similar modifications made by the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
It is noted that, herein, relational terms such as "a" and "B," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases ' a pair of ' 8230 ', ' 8230 ', do not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an embodiment of the present invention, so that those skilled in the art can understand or realize the technical features of the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A universal fabricated connecting system for two-way bent box section bars, characterized in that it comprises: a. a pair of symmetrically disposed end plates: an end plate A (1) and an end plate B (2); b. n sets of sleeve bolt assemblies (3); c. m sets of cover assemblies (4);
the end plate is structurally characterized in that one surface of the end plate is a contact joint surface (5), the other surface of the end plate is a rod end fixing surface (6) fixedly connected with a box-shaped section rod end (7), a contact pressure-bearing flange (8) is arranged along the peripheral edge of the contact joint surface (5), N bolt holes are uniformly distributed in a region between the outer edges of the end plate, namely a bolt hole A (11) is formed in the end plate A (1), and a bolt hole B (12) is formed in the end plate B (2); after the contact joint surfaces (5) of the corresponding end plate A (1) and the end plate B (2) are aligned and contacted oppositely, the contact pressure-bearing flanges (8) of the end plate A (1) and the end plate B (2) are relatively notched and form M installation operation holes (10);
each group of sleeve bolt assembly (3) comprises 1 bolt rod (13), 1 outer hexagonal sleeve (14), 2 pins (15) and 1 annular gasket (16); a pair of sliding grooves (22) which are symmetrical about an axis are formed in the smooth section of the middle of the bolt rod (13), and the width of each sliding groove (22) is matched with the diameter of each pin (15); the outer hexagonal sleeve (14) is a regular hexagonal prism with an evacuated middle part, the outer hexagonal prism surface and the inner cylindrical cavity share the same axis, the inner wall is smooth, and the outer hexagonal sleeve is sleeved on the bolt rod (13); the middle parts of a group of opposite outer cylindrical surfaces of the outer hexagonal sleeve (14) are provided with penetrating pin threaded holes, and the hole diameters of the pin threaded holes are matched with the pins (15); the diameter of an inner hole of the annular gasket (16) is matched with the diameter of the bolt rod (13), the annular gasket (16) is arranged between a nut of the bolt rod (13) and the end plate A (1), and a thread section of the bolt rod (13) is screwed into a bolt hole B (12) arranged on the end plate B (2);
each group of cover plate assembly (4) comprises 1 cover plate (17) for closing the fixed mounting operation hole (10).
2. The universal assembly connection system for the two-way bent box-type section bars according to claim 1 is characterized in that a middle hole (21) is formed in the middle bolt-free hole area of the end plate, and a contact pressure-bearing flange (8) is arranged at the edge of the middle hole (21).
3. -fitted connection system for rods of a two-way bent box section according to claim 1, characterised in that end plate stiffeners (19) are added between the bolt holes on the contact-joining surface (5) of the end plates.
4. -fabricated connecting system for rods of two-way bent box section according to claim 1 or 2, characterised in that locally thickened frustums (20) are added around the bolt holes on the rod end fixing surface (6) of the end plate B (2).
5. A universal fabricated connecting system for rods with two-way bent box-shaped sections according to claim 3, characterized in that a locally thickened frustum (20) is additionally arranged on the fixing surface (6) of the rod end of the end plate B (2) around the bolt hole.
6. The assembly type connecting system for rods with two-way bent box-type sections according to claim 1 is characterized in that the cover plate (17) is packaged in a manner that four corners of the installation operation holes (10) are provided with bevel angles, and bevel angle threaded holes are formed in the bevel angles; the cover plate assembly (4) also comprises a countersunk cover plate fixing screw (18); corner bolt holes are arranged at four corners of the cover plate (17); countersunk cover plate fixing screws (18) sequentially pass through the corner bolt holes and the bevel angle threaded holes to seal the fixing cover plate (17).
7. The universal assembly type connecting system for the rods with the two-way bent box-shaped sections as claimed in claim 1, wherein the cover plate (17) is packaged in a structure that a fixing lug plate is arranged inside the edge of the mounting operation hole (10), and a lug plate threaded hole is formed in the fixing lug plate; the cover plate assembly (4) also comprises a countersunk cover plate fixing screw (18); the edge of the cover plate (17) is provided with a corresponding cover plate bolt hole; countersunk cover plate fixing screws (18) sequentially pass through the cover plate bolt holes and the lug plate threaded holes to seal the fixed cover plate (17).
8. The universal assembly type connecting system for the rods with the bidirectionally curved box-shaped sections according to claim 1, wherein the cover plate (17) is packaged in a structure that fixing lug plates are arranged on the periphery of the cover plate (17), and cover plate bolt holes are formed in the fixing lug plates; the side surface of the end plate contacting the pressure-bearing flange is provided with a corresponding flange threaded hole; the cover plate assembly (4) also comprises a countersunk cover plate fixing screw (18); countersunk cover plate fixing screws (18) sequentially pass through the lug plate bolt holes and the flange threaded holes to seal the fixing cover plate (17).
9. A method of assembling a fitting connection system for rods with two-way bent box sections, according to claim 1, characterised in that it comprises the steps of,
1) Before the end plate A (1) is welded with the rod end, a bolt rod (13) is taken to sequentially penetrate through 1 annular gasket (16) and corresponding holes in the end plate A (1), so that a sliding chute (22) in the bolt rod (13) is positioned on the same side of a contact pressure-bearing flange (8) on the end plate A (1), and the annular gasket (16) is positioned on the other side; then, sleeving an outer hexagonal sleeve (14) to a sliding groove (22) from the threaded end of the bolt rod (13), rotating the outer hexagonal sleeve (14) to enable the position of a threaded hole in the outer hexagonal sleeve to be consistent with the position of the sliding groove (22), screwing in the threaded hole in the outer hexagonal sleeve (14) by using a pin (15), and extending into the sliding groove (22) in the bolt rod (13) to limit the coaxial relative rotation between the outer hexagonal sleeve (14) and the bolt rod (13);
2) Connecting and fixing the end plate A (1) and the end plate B (2) of the sleeve bolt assembly (3) with the corresponding box-section rod ends (7) respectively in a factory, and integrally transporting to an installation site;
3) When the end plate A (1) is correspondingly connected with the end plate B (2), the positions of the corresponding rod ends are adjusted firstly to ensure that the two end plates are aligned oppositely, then the outer hexagonal sleeve (14) is slid to a proper position, and the bolt rod (13) is manually screwed into a part of the corresponding threaded hole on the end plate B (2); then, screwing the outer hexagonal sleeve (14) by using a wrench to drive the bolt rod (13) to rotate until a set torque force is reached;
4) And then taking out the wrench from the mounting operation hole (10), and mounting the cover plate assembly (4) to finish the fixed connection of the two sections of box-shaped section rods.
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| CN201611066339.7A CN106436927B (en) | 2016-11-28 | 2016-11-28 | Universal assembly type connecting system for two-way bending box-shaped section rods |
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| CN201611066339.7A CN106436927B (en) | 2016-11-28 | 2016-11-28 | Universal assembly type connecting system for two-way bending box-shaped section rods |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444211A (en) * | 2011-11-15 | 2012-05-09 | 福州大学 | Hole-expanding type steel structure beam column node connected through end plate and construction method thereof |
| CN102535642A (en) * | 2011-12-29 | 2012-07-04 | 东南大学 | Assembling type node of spatial freeform curved latticed shell steel structure and assembling method of assembling type node |
| CN203213310U (en) * | 2013-04-26 | 2013-09-25 | 赵守明 | Steel frame-structure beam-column rigid bolt joint |
| WO2016182278A1 (en) * | 2015-05-14 | 2016-11-17 | 토닉스틸 주식회사 | Composite beam structure having reinforcement structure according to size of moment generation, and construction method using same |
| CN206800650U (en) * | 2016-11-28 | 2017-12-26 | 云南大学 | A kind of general assembled connection system of compound bending box-type section bar |
-
2016
- 2016-11-28 CN CN201611066339.7A patent/CN106436927B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444211A (en) * | 2011-11-15 | 2012-05-09 | 福州大学 | Hole-expanding type steel structure beam column node connected through end plate and construction method thereof |
| CN102535642A (en) * | 2011-12-29 | 2012-07-04 | 东南大学 | Assembling type node of spatial freeform curved latticed shell steel structure and assembling method of assembling type node |
| CN203213310U (en) * | 2013-04-26 | 2013-09-25 | 赵守明 | Steel frame-structure beam-column rigid bolt joint |
| WO2016182278A1 (en) * | 2015-05-14 | 2016-11-17 | 토닉스틸 주식회사 | Composite beam structure having reinforcement structure according to size of moment generation, and construction method using same |
| CN206800650U (en) * | 2016-11-28 | 2017-12-26 | 云南大学 | A kind of general assembled connection system of compound bending box-type section bar |
Non-Patent Citations (1)
| Title |
|---|
| 轻型厂房钢结构门式刚架节点板设计计算研究;郝凤祥;《钢结构》;20010422(第02期);全文 * |
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