CN107143042B - Connecting structure of embedded bolts in closed rod piece, screwing method and application in assembling single-layer latticed shell structure of rectangular steel pipe - Google Patents
Connecting structure of embedded bolts in closed rod piece, screwing method and application in assembling single-layer latticed shell structure of rectangular steel pipe Download PDFInfo
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- CN107143042B CN107143042B CN201710207126.XA CN201710207126A CN107143042B CN 107143042 B CN107143042 B CN 107143042B CN 201710207126 A CN201710207126 A CN 201710207126A CN 107143042 B CN107143042 B CN 107143042B
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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
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
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- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a connecting structure of embedded bolts in a closed rod piece, a screwing method and application in assembling a single-layer latticed shell structure of a rectangular steel pipe, wherein the connecting structure of the node comprises a node body, a node end plate, a rod piece and bolts; the node end plate is welded at the end part of the node body, the rod end plate is welded at the end part of the rod, a threaded hole is formed in the node end plate, a through hole is formed in the rod end plate, the bolt penetrates through the through hole and is connected with the threaded hole in a rotating mode, and two or three nuts are connected with the bolt in a rotating mode. The node can be screwed in or out of the embedded bolt by applying positive torque or negative torque to the middle nut or the inner nut and applying negative torque to the middle nut or the outer nut. Therefore, the node assembling mode of the rectangular steel pipe single-layer latticed shell structure without weakening the rod pieces is realized. The invention has simple and efficient process, lower production cost, clear stress mechanism and convenient popularization and application.
Description
Technical Field
The invention belongs to the technical field of structural engineering, and particularly relates to a connecting structure of embedded bolts in a closed rod piece, a screwing method and application in assembling of a single-layer latticed shell structure of a rectangular steel pipe.
Background
The latticed shell structure has the stress characteristics of a rod system structure and a thin shell structure, and has the remarkable characteristics of large spanning capability, rich building shapes, superior economic indexes and the like. The reticulated shell structure has been rapidly developed at home and abroad for decades, and is still one of the most widely applied spatial structure forms in practical engineering. The single-layer reticulated shell has few nodes and rods, light and concise building effect and good permeability, and is particularly suitable for buildings with free-form surfaces, complex shapes and high aesthetic requirements.
According to the cross section form, the single-layer reticulated shell rod piece mainly comprises a round steel pipe, a rectangular steel pipe and an I-shaped steel member. In the single-layer reticulated shell, the rod piece bears the action of bending moment besides axial force, and the out-of-shell bending moment is usually far greater than the in-plane bending moment, so that the rectangular steel pipe with strong and weak cross section and high bending rigidity in the main shaft direction is more suitable for the single-layer reticulated shell than the round steel pipe from the reasonable stress angle. In addition, the rectangular steel pipe can directly support roofing materials, an additional purline system is not needed, and the simple and transparent building effect can be guaranteed. Compared with an I-shaped steel member, the rectangular steel pipe has better bending rigidity and torsional rigidity of a weak shaft, and is attractive in appearance, easy to clean and corrosion-resistant.
Although the single-layer latticed shell with the rectangular section rod piece has excellent performance, the development of the nodes or the connection technology is relatively lagged, so that most of the nodes are welded in the actual engineering, and the popularization and development of the nodes are severely restricted. In the existing rectangular steel pipe single-layer latticed shell splicing and connecting technology, the partial section of the end part of a rectangular rod is usually sacrificed for facilitating construction and installation. For example, the German Mero BK node and the SEELE node form holes on the flange of the rod piece, so that the assembly is realized, and the bearing capacity and the tightness of the rod piece are weakened to a certain degree. And the existing fabricated node has higher cost due to complex process, high requirement on manufacturing precision and the like, and is not easy to popularize.
Disclosure of Invention
The invention aims to provide a connecting structure of a pre-embedded bolt in a closed rod piece, a screwing method and application in assembling of a rectangular steel pipe single-layer latticed shell structure, aiming at the defects of the existing node system. The invention ensures the integrity of the section of the rectangular steel pipe by embedding the bolts. Meanwhile, the connecting component is few, the processing technology is simple, and the manufacturing cost is low.
The purpose of the invention is realized by the following technical scheme: a node connecting structure of a pre-buried bolt in a closed rod piece comprises a node body, a node end plate, a rod piece and a bolt; the node end plate is welded at the end of the node body, the rod end plate is welded at the end of the rod, a threaded hole is formed in the node end plate, a through hole is formed in the rod end plate, the bolt penetrates through the through hole and is screwed with the threaded hole, and two or three nuts are screwed on the bolt.
Further, the number of the bolts is two or three.
The invention also aims to provide a method for screwing the joint connecting structure of the embedded bolt in the closed rod piece, which comprises the following specific steps:
1) Prefabricating a node body and a node end plate in a factory, pre-forming a threaded hole in the node end plate, and welding the node body and the node end plate together;
2) Prefabricating a rod piece and a rod piece end plate in a factory, and pre-forming a through hole on the rod piece end plate;
3) The bolt penetrates through a through hole in the rod piece end plate in advance, then the rod piece end plate and the rod piece are welded together, and in order to prevent the bolt from falling off in operation, two or three nuts are screwed into the middle of the bolt in advance;
4) If the two nuts are used, the inner nut applies positive torque, the bolt is screwed into the node end plate, and the outer nut applies negative torque, so that the bolt is screwed out of the node end plate; if the number of the nuts is three, positive torque or negative torque is directly applied through the middle nut, and the bolt is screwed into or out of the gusset plate;
5) And when the nut is screwed in and is tightly propped against the node end plate, the assembly is finished.
Further, the number of the threaded holes, the through holes and the bolts is two or three.
The invention also provides application of the joint connection structure of the embedded bolt in the closed rod piece in assembling of a rectangular steel pipe single-layer latticed shell structure.
The connecting structure has the beneficial effects that the bolts are embedded at the end of the rod piece, so that the self bearing capacity of the rod piece is not weakened, and the connecting structure has higher bending rigidity and bearing capacity; compared with other node connection forms, the invention realizes the assembly of the node connection field by the screwing mode of double nuts or triple nuts, and has simple installation mode and high assembly efficiency; the invention has simple structure, clear force transmission path, less control parameters and convenient structural design; the components of the connecting structure are common components, the manufacturing cost is low, the prefabrication degree is high, and the application and popularization are facilitated.
Drawings
FIG. 1 is a schematic diagram of the components of an assembled node connection of the present invention;
FIG. 2 is a schematic illustration of the present invention construction site assembly process; wherein a is a schematic view of assembling two nuts; b is a three-nut assembly diagram;
FIG. 3 is a schematic view of the assembled node of the present invention with a two-nut type connection completed; wherein a is a schematic diagram when the end parts of the node end plate, the outer nut, the inner nut and the rod piece are tightly propped against each other; b is a schematic diagram of the outer nut, the inner nut and the rod piece end top; c is a schematic diagram when the node end plate, the outer nut, the inner nut and the rod end plate are respectively tightly propped;
FIG. 4 is a schematic view of the assembled node three-nut type connection of the present invention as it is completed; wherein a is a schematic diagram when the node end plate, the three nuts and the rod end plate are all tightly pressed; b is a schematic diagram when the three nuts are tightly propped against the rod end plate;
FIG. 5 is a schematic view of the assembled node of the present invention when the connection is completed with three bolts;
the parts in the drawing are marked as follows, 1, a node body; 2. a node end plate; 3. an outer nut; 4. a middle nut; 5. an inner nut; 6. a bolt; 7. a rod end plate; 8. a rod member.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, a joint connection structure of a pre-buried bolt in a closed rod comprises a joint body 1, a joint end plate 2, a rod end plate 7, a rod 8 and a bolt 6; node end plate 2 welds the tip at the node body 1, member end plate 7 welds the tip at member 8, it has the screw hole to open on the node end plate 2, it has the through-hole to open on the member end plate 7, bolt 6 passes the through-hole and connects with the screw hole soon, bolt 6 top spin has connect two or three nut.
Preferably, the number of the bolts 6 is two or three.
The method for screwing the joint connection structure of the embedded bolt in the closed rod piece comprises the following specific steps:
1) Prefabricating a node body 1 and a node end plate 2 in a factory, pre-forming two or three threaded holes in the node end plate 2, and then welding the node body 1 and the node end plate 2 together;
2) Prefabricating a rod 8 and a rod end plate 7 in a factory, and pre-forming two or three through holes on the rod end plate 7;
3) The bolts 6 are inserted through the through holes on the rod end plate 7 in advance, then the rod end plate 7 and the rod 8 are welded together, and in order to prevent the bolts from falling off in operation, two or three nuts are screwed into the middle of the bolts 6 in advance, and the operation is completed as shown in a schematic diagram 2.
4) When the two nuts are assembled on site, as shown in a schematic diagram 2, positive torque is applied through the inner nut 5, the bolt 6 is screwed into the node end plate 2, and negative torque is applied through the outer nut 3, and the bolt 6 is screwed out of the node end plate 2; if the nut is three, the bolt 6 is screwed into or out of the gusset plate 2 by directly applying positive torque or negative torque through the middle nut 4; to ensure installation, the screwing of the upper and lower screws should be kept synchronous.
5) And when the nut 3 is screwed to be tightly propped against the node end plate 2, the assembly is finished. In actual assembly, when the bolt 6 is screwed to a certain depth, the assembly is also considered to be completed. The assembly is completed according to the different positions of the nut, see fig. 3, fig. 4. Fig. 5 is a schematic diagram of the assembled node of the present invention when the connection is completed by three bolts.
The application of the joint connection structure of the embedded bolt in the closed rod piece in the assembly of the rectangular steel pipe single-layer latticed shell structure has the advantages of high prefabrication degree, simple assembly mode, good stress performance and higher application and popularization potential on the basis of ensuring that the rod piece is not weakened.
Claims (3)
1. A method for screwing a node connection structure of a pre-buried bolt in a closed rod is characterized by comprising the following steps:
1) Prefabricating a node body (1) and a node end plate (2) in a factory, pre-forming a threaded hole in the node end plate (2), and welding the node body (1) and the node end plate (2) together;
2) Prefabricating a rod piece (8) and a rod piece end plate (7) in a factory, and pre-opening a through hole on the rod piece end plate (7);
3) The bolt (6) penetrates through a through hole in the rod end plate (7) in advance, then the rod end plate (7) and the rod (8) are welded together, and then two or three nuts are screwed into the middle of the bolt (6) in advance;
4) If the nut is two, the inner nut (5) applies positive torque to screw the bolt (6) into the node end plate (2), and the outer nut (3) applies negative torque to screw the bolt (6) out of the node end plate (2); if the number of the nuts is three, positive torque or negative torque is directly applied through the middle nut (4), and the bolt (6) is screwed into or out of the node end plate (2);
5) When the external nut (3) is screwed to be tightly propped against the node end plate (2), the assembly is finished;
the node connecting structure of the embedded bolt in the closed rod piece comprises a node body (1), a node end plate (2), a rod end plate (7), a rod piece (8) and a bolt (6); node end plate (2) welding is at the tip of the node body (1), member end plate (7) welding is at the tip of member (8), open threaded hole on node end plate (2), it has the through-hole to open on member end plate (7), bolt (6) pass through-hole and screw hole and connect soon, bolt (6) top spin has connect two or three nut.
2. The tightening method of the joint connection structure of the embedded bolts in the closed rod according to claim 1, characterized in that the number of the bolts (6) is two or three.
3. The tightening method of the joint connection structure of the embedded bolts in the closed rod according to claim 1, wherein the number of the threaded holes, the through holes and the bolts (6) is two or three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207126.XA CN107143042B (en) | 2017-03-31 | 2017-03-31 | Connecting structure of embedded bolts in closed rod piece, screwing method and application in assembling single-layer latticed shell structure of rectangular steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207126.XA CN107143042B (en) | 2017-03-31 | 2017-03-31 | Connecting structure of embedded bolts in closed rod piece, screwing method and application in assembling single-layer latticed shell structure of rectangular steel pipe |
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| Publication Number | Publication Date |
|---|---|
| CN107143042A CN107143042A (en) | 2017-09-08 |
| CN107143042B true CN107143042B (en) | 2022-11-08 |
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| CN201710207126.XA Active CN107143042B (en) | 2017-03-31 | 2017-03-31 | Connecting structure of embedded bolts in closed rod piece, screwing method and application in assembling single-layer latticed shell structure of rectangular steel pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106995B (en) * | 2019-05-25 | 2020-06-26 | 江西天岩建设工程有限公司 | Assembled building wall |
| CN112144900A (en) * | 2020-09-30 | 2020-12-29 | 无锡市光彩机械制造有限公司 | Integrated profile steel adjusting device |
| CN112575892B (en) * | 2020-11-27 | 2022-03-29 | 北京工业大学 | Steel structure bolt-free assembly joint and connecting method of two-end closed section components |
Citations (7)
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|---|---|---|---|---|
| JP2005248623A (en) * | 2004-03-05 | 2005-09-15 | Nippon Steel Corp | High tension bolt joint structure of column and beam having h-shaped cross section |
| JP2013096197A (en) * | 2011-11-04 | 2013-05-20 | Yoshikuni Okura | Connection structure |
| CN103114670A (en) * | 2013-02-25 | 2013-05-22 | 中国民航大学 | Single and double-layer spherical reticulated shell with piezoelectric ceramic bar structure and bar internal force monitoring device |
| CN105544739A (en) * | 2016-01-24 | 2016-05-04 | 山东建筑大学 | Single-layer reticulated shell bolt connection node and constructing and mounting method |
| CN106320537A (en) * | 2016-10-31 | 2017-01-11 | 华侨大学 | Prefabricated concrete-filled square steel tube column and steel girder connecting joint |
| CN106499052A (en) * | 2016-11-22 | 2017-03-15 | 浙江东南网架股份有限公司 | Unit assembled end plate connecting node of six bar tetrahedral modules of one kind and preparation method thereof |
| CN206752697U (en) * | 2017-03-31 | 2017-12-15 | 浙江大学 | The attachment structure of pre-embedded bolt in a kind of closing rod member |
-
2017
- 2017-03-31 CN CN201710207126.XA patent/CN107143042B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005248623A (en) * | 2004-03-05 | 2005-09-15 | Nippon Steel Corp | High tension bolt joint structure of column and beam having h-shaped cross section |
| JP2013096197A (en) * | 2011-11-04 | 2013-05-20 | Yoshikuni Okura | Connection structure |
| CN103114670A (en) * | 2013-02-25 | 2013-05-22 | 中国民航大学 | Single and double-layer spherical reticulated shell with piezoelectric ceramic bar structure and bar internal force monitoring device |
| CN105544739A (en) * | 2016-01-24 | 2016-05-04 | 山东建筑大学 | Single-layer reticulated shell bolt connection node and constructing and mounting method |
| CN106320537A (en) * | 2016-10-31 | 2017-01-11 | 华侨大学 | Prefabricated concrete-filled square steel tube column and steel girder connecting joint |
| CN106499052A (en) * | 2016-11-22 | 2017-03-15 | 浙江东南网架股份有限公司 | Unit assembled end plate connecting node of six bar tetrahedral modules of one kind and preparation method thereof |
| CN206752697U (en) * | 2017-03-31 | 2017-12-15 | 浙江大学 | The attachment structure of pre-embedded bolt in a kind of closing rod member |
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| CN107143042A (en) | 2017-09-08 |
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