CN215906988U - Lattice rod piece and bolt connection node for single-layer latticed shell structure - Google Patents
Lattice rod piece and bolt connection node for single-layer latticed shell structure Download PDFInfo
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- CN215906988U CN215906988U CN202122233575.6U CN202122233575U CN215906988U CN 215906988 U CN215906988 U CN 215906988U CN 202122233575 U CN202122233575 U CN 202122233575U CN 215906988 U CN215906988 U CN 215906988U
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Abstract
A lattice rod piece and a bolt connection node for a single-layer latticed shell structure are composed of a double-limb batten plate lattice rod piece and a bolt connection node, wherein the double-limb batten plate lattice rod piece comprises batten plates and limb rods, and the bolt connection node comprises a split type node body, a double-section high-strength bolt, a thick nut, a thin nut and an end plate; the adopted double-limb batten plate lattice type rod piece is composed of an upper limb rod, a lower limb rod and a plurality of batten plates, the part with smaller stress in the section of a solid web type rod piece and the section of a closed tube rod piece is reduced, the utilization rate of materials in the rod piece is improved, and the self weight of a single-layer latticed shell structure is reduced under the condition of unchanged bearing capacity; meanwhile, the lattice type rod piece has higher bending rigidity, so that when the single-layer reticulated shell structure is under the action of external load, the deformation of the rod piece is smaller, and the rigidity and the stability of the structure are improved. The two structural rod pieces of the double-limb batten plate and the split node body are matched with each other, so that the overall weight and the economic cost of the structure are further reduced.
Description
Technical Field
This patent relates to spatial grid structure's connected node belongs to the building steel construction field.
Background
The single-layer latticed shell structure has the characteristics of light weight, large span, diversified building models and the like, and is widely applied to large-span buildings such as airports, stations and the like in recent years. The bolt connection is one of the main connection forms of the single-layer latticed shell structure, and the rod piece is connected with the node body through the bolt, so that the construction quality is guaranteed, and meanwhile, the development trend of building assembly is met. The forces applied to each rod in the single-layer reticulated shell structure are mainly out-of-plane bending moment, axial tension and pressure, and the cross section of the rod in the existing single-layer reticulated shell structure is mostly a solid web section or a closed pipe section. The single-layer latticed shell structure of the solid-web section rod piece is adopted, so that the width-thickness ratio of the cross section of the web plate is required to be smaller than the limit value specified in the current steel structure design standard for preventing the local instability of the web plate in the rod piece, and the thickness of the web plate adopted in the actual engineering is often larger; the single-layer latticed shell structure adopting the closed-end pipe section rod piece is generally circular or rectangular in section, when an external load applied to the single-layer latticed shell structure is large, the diameter of a selected circular pipe or the height of a selected rectangular pipe is often large, and at the moment, in order to meet the requirement of local stability of a plate, the section thickness is often also large. However, it is known from force analysis that when the rod in the single-layer reticulated shell structure is subjected to an out-of-plane bending moment, the bending moment of the rod section near the neutral axis is small, and no matter the rod is a rod with a solid cross section or a rod with a closed pipe cross section, the material of the rod section near the neutral axis cannot be fully utilized, so that waste is caused, and the self weight and the manufacturing cost of the structure are increased.
Disclosure of Invention
The purpose of this patent is in order to overcome prior art's not enough, has proposed a structural member and bolted connection node for individual layer latticed shell structure.
The technical scheme of this patent is as follows:
the utility model provides a structural member and bolted connection node for individual layer reticulated shell structure, it comprises two parts of two limbs batten plate lattice member and bolted connection node, wherein two limbs batten plate lattice member part includes batten plate and limb pole, and bolted connection node part includes split type node body, two sections high strength bolt, thick nut, thin nut, end plate. The upper end of the batten plate is welded with the limb rods at the upper part, and the lower end of the batten plate is welded with the limb rods at the lower part; the limb rod is a hollow closed rod piece with a circular or rectangular cross section; the upper limb rod and the lower limb rod and the plurality of batten plates welded in the middle of the limb rods jointly form a double-limb batten plate lattice rod piece in a single-layer reticulated shell structure. The split type node body consists of an upper node body and a lower node body, the upper surface and the lower surface of the two node bodies are planes, the side surface of the node body is provided with a screw hole, and the size of the screw hole is matched with the small thread section of the double-section high-strength bolt; the double-section high-strength bolt is sequentially provided with a smooth circular section, a large thread section and a small thread section from one end of the nut to the other end, and the length of the smooth circular section is smaller than the thickness of the end plate; the thick nut and the thin nut are matched with the large thread section of the double-section high-strength bolt; the end plate is provided with an upper round hole and a lower round hole, the positions of the round holes correspond to the positions of the screw holes of the split node body, and the end plate is welded with the limbs.
The diameter of the round hole of the end plate is 0.5-2mm larger than the nominal diameter of the large thread section of the double-section high-strength bolt;
the minimum distance between the inner wall of the limb rod and the double-section high-strength bolt and nut is at least 2 mm.
The characteristics and the beneficial effect of this patent:
the patent provides a lattice rod piece and a bolt connection node for a single-layer reticulated shell structure, the adopted lattice rod piece with double-limb batten plates is composed of an upper limb rod, a lower limb rod and a plurality of batten plates, the part with smaller stress in the cross section of a solid-web rod piece and the cross section of a closed-end pipe rod piece is reduced, the utilization rate of materials in the rod piece is improved, the weight is lighter under the condition of unchanged bearing capacity, and the dead weight of the single-layer reticulated shell structure is reduced; the lattice rod piece has larger bending rigidity, so that when the single-layer reticulated shell structure is under the action of external load, the deformation of the rod piece is smaller, and the rigidity and the stability of the structure are improved; the cross-sectional area and the shape of the upper limb and the lower limb in the double-limb batten plate lattice type rod piece can be flexibly adjusted according to the stress condition of the rod piece, so that the material of the rod piece is more fully utilized, and the economic cost is reduced.
Drawings
Fig. 1 is an exploded view of a two-limb batten plate lattice rod and split bolt connection node;
FIG. 2 is a schematic view of the assembled two-limb batten plate lattice type rod and split bolt connection node;
fig. 3 is a partial connection schematic diagram of the lattice type rod piece of the double-limb batten plate and the split bolt connection node in a single-layer latticed shell.
Wherein 1 is the split type node body, 2 is two sections high strength bolts, 3 are thick nuts, 4 are thin nuts, 5 are the end plate, 6 are the batten board, 7 are the limb pole.
Detailed Description
The first implementation mode comprises the following steps:
as shown in fig. 1, a lattice member and a bolt connection node for a single-layer reticulated shell structure are composed of two parts, namely, a double-limb batten plate lattice member and a bolt connection node, wherein the double-limb batten plate lattice member comprises a batten plate 6 and a limb rod 7, and the bolt connection node comprises: the split type node body 1, two sections high strength bolt 2, thick nut 3, thin nut 4, end plate 5. The batten plate 6 is a steel plate which is rectangular and has a certain thickness, the upper end of the batten plate is welded with the limb rod 7 at the upper part, and the lower end of the batten plate is welded with the limb rod 7 at the lower part; the upper limb rod 7, the lower limb rod 7 and the plurality of batten plates 6 welded in the middle of the limb rods 7 form a double-limb batten plate lattice type rod piece in a single-layer reticulated shell structure; the split type node body 1 consists of an upper node body and a lower node body, the upper surface and the lower surface of the two node bodies are planes, the side surface of the node body is provided with a screw hole, and the size of the screw hole is matched with the small thread section of the double-section high-strength bolt 2; the double-section high-strength bolt 2 is sequentially provided with a smooth circular section, a large thread section and a small thread section from one end of a nut to the other end, and the length of the smooth circular section is smaller than the thickness of the end plate 5; the thick nut 3 and the thin nut 4 are matched with the large thread section of the double-section high-strength bolt 2; the end plate 5 is provided with an upper round hole and a lower round hole, the positions of the round holes correspond to the positions of the screw holes of the split node body, and the end plate 5 is welded with the limb rods 7.
The construction and installation method comprises the following steps:
(1) firstly, welding a plurality of batten plates 6 between an upper limb rod 7 and a lower limb rod 7 to form a double limb batten plate lattice rod piece;
(2) then the double-section high-strength bolt 2 is penetrated into a round hole of the end plate 5, then the thin nut 4 and the thick nut 3 are sequentially screwed into a large thread section of the double-section high-strength bolt to prevent the double-section high-strength bolt 2 from falling into the limbs 7 in the installation process, and then the end plate 5 is welded with the upper limb 7 and the lower limb 7 in the double-limb batten plate lattice type rod piece; or the double-section high-strength bolt 2 is firstly respectively placed into the upper limb rod 7 and the lower limb rod 7 of the double-limb batten plate lattice type rod piece, then the end plate 5 is welded with the upper limb rod 7 and the lower limb rod 7, then the screw rod of the double-section high-strength bolt 2 is poured out of the round hole of the end plate 5, and the thin nut 4 and the thick nut 3 are sequentially screwed in;
(3) simultaneously, the thin nut 4 and the thick nut 3 are rotated until the thin nut 4 and the thick nut 3 are in a clamping and self-locking state;
(4) aligning the small thread section of the double-section high-strength bolt 2 to the corresponding screw hole of the split type node body 1, and rotating the thick nut 3 to drive the small thread section of the double-section high-strength bolt 2 to be screwed into the corresponding screw hole of the split type node body 1 until the small thread section of the double-section high-strength bolt 2 is completely screwed into the split type node body 1 and reaches a specified torque value;
(5) rotating the thin nut 4 towards the end plate 5 until the thin nut 4 is tightly clamped with the end plate 5 and reaches a specified torque value; and then the thick nut 3 is rotated until the thick nut 3 and the thin nut 4 are in a clamping state and reach a specified torque value, and the installation is finished.
Claims (4)
1. A lattice rod piece and a bolt connection node for a single-layer latticed shell structure are composed of a double-limb batten plate lattice rod piece and a bolt connection node, wherein the double-limb batten plate lattice rod piece comprises a batten plate and a limb rod, and the bolt connection node comprises a split type node body, a double-section high-strength bolt, a thick nut, a thin nut and an end plate; the upper end of the batten plate is welded with the limb rods at the upper part, and the lower end of the batten plate is welded with the limb rods at the lower part; the limb rod is a hollow closed rod piece with a circular or rectangular cross section; the upper limb rod, the lower limb rod and the plurality of batten plates welded in the middle of the limb rods form a double-limb batten plate lattice rod piece in a single-layer reticulated shell structure; the split type node body consists of an upper node body and a lower node body, the upper surface and the lower surface of the two node bodies are planes, the side surface of the node body is provided with a screw hole, and the size of the screw hole is matched with the small thread section of the double-section high-strength bolt; the double-section high-strength bolt is sequentially provided with a smooth circular section, a large thread section and a small thread section from one end of the nut to the other end, and the length of the smooth circular section is smaller than the thickness of the end plate; the thick nut and the thin nut are matched with the large thread section of the double-section high-strength bolt; the end plate is provided with an upper round hole and a lower round hole, the positions of the round holes correspond to the positions of the screw holes of the split node body, and the end plate is welded with the limbs.
2. The lattice rod and bolt connection node for a single-layered lattice shell structure according to claim 1, wherein: the diameter of the round hole of the end plate is 0.5-2mm larger than the nominal diameter of the large thread section of the double-section high-strength bolt.
3. The lattice rod and bolt connection node for a single-layered lattice shell structure according to claim 1, wherein: the minimum distance between the inner wall of the limb rod and the double-section high-strength bolt and nut is at least 2 mm.
4. The lattice rod and bolt connection node for a single-layered lattice shell structure according to claim 1, wherein: the thread directions of the large thread section and the small thread section of the double-section high-strength bolt are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122233575.6U CN215906988U (en) | 2021-09-15 | 2021-09-15 | Lattice rod piece and bolt connection node for single-layer latticed shell structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122233575.6U CN215906988U (en) | 2021-09-15 | 2021-09-15 | Lattice rod piece and bolt connection node for single-layer latticed shell structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215906988U true CN215906988U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122233575.6U Active CN215906988U (en) | 2021-09-15 | 2021-09-15 | Lattice rod piece and bolt connection node for single-layer latticed shell structure |
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| CN (1) | CN215906988U (en) |
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2021
- 2021-09-15 CN CN202122233575.6U patent/CN215906988U/en active Active
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