CN115182451A - Assembled node suitable for cavity intermediate layer steel pipe concrete component is connected - Google Patents
Assembled node suitable for cavity intermediate layer steel pipe concrete component is connected Download PDFInfo
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- CN115182451A CN115182451A CN202210755315.1A CN202210755315A CN115182451A CN 115182451 A CN115182451 A CN 115182451A CN 202210755315 A CN202210755315 A CN 202210755315A CN 115182451 A CN115182451 A CN 115182451A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 357
- 239000010959 steel Substances 0.000 title claims abstract description 357
- 238000003466 welding Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 28
- 238000009434 installation Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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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
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
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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
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5837—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially circular form
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Abstract
The invention relates to an assembled node suitable for connecting hollow sandwich concrete-filled steel tube members, which comprises a node frame, a connecting steel plate and an annular steel plate, wherein the connecting steel plate is arranged on the node frame; the annular steel plate is fixed at the end part of the hollow sandwich steel tube concrete member and is welded with the inner steel tube and the outer steel tube of the hollow sandwich steel tube concrete member, the inner edge extends into the inner steel tube, and the outer edge extends out of the outer steel tube; the annular steel plate is provided with two circles of bolt holes, the outer circle of bolt holes are positioned on the outer side of the outer steel pipe, and the inner circle of bolt holes are positioned on the inner side of the inner steel pipe; the connecting steel plate is fixed on the node frame; and two circles of bolt holes are arranged on the connecting steel plate and correspond to the two circles of bolt holes of the annular steel plate, so that the connecting steel plate is connected with the annular steel plate through bolts. The inner side and the outer side of the member are connected by the bolts, so that the uniform stress is realized, the assembly and the disassembly are convenient, the effect of connecting a plurality of members on the same node is realized, and the invention belongs to the technical field of the connecting structure of hollow sandwich steel tube concrete members.
Description
Technical Field
The invention relates to a connecting structure of hollow sandwich concrete-filled steel tube members, in particular to an assembled node suitable for connecting hollow sandwich concrete-filled steel tube members.
Background
The hollow sandwich steel tube concrete column shows excellent mechanical properties due to the constraint of the outer steel tube on the sandwich concrete and the supporting effect of the inner steel tube on the sandwich concrete, and can be further applied to structures such as industrial and civil buildings, bridges, towers and the like. Aiming at the connection of the hollow sandwich steel pipe concrete member, if the connection mode of the steel pipe concrete member is simply used, due to process defects, the connection is only carried out on the steel pipe outside the member, the inner steel pipe cannot be connected with the node, the connection stress of the member and the node is uneven, and potential safety hazards are caused.
According to the connection form of the existing hollow sandwich steel pipe concrete members, the connection between the existing hollow sandwich steel pipe concrete members is flange connection or flange connection of an outer steel pipe welding stiffening rib, namely, the outer steel pipe welding flange, two flanges are butted and locked through a circle of bolts positioned outside the outer steel pipe. Two connection forms have certain limitations, which are specifically shown as follows: (1) The two connection forms can only connect the components in the same direction, and the connection of the components in multiple directions cannot be satisfied in one node; (2) The two connection forms can only adopt bolt connection at the outer steel pipe side of the hollow sandwich steel pipe concrete member, and the inner steel pipe side can not adopt the connection form, so that the stress of the node is uneven.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to: the assembled node is suitable for connecting hollow sandwich steel pipe concrete members, and the inner side and the outer side of the assembled node are connected through bolts, so that the stress is more uniform.
In order to achieve the purpose, the invention adopts the following technical scheme:
an assembled node suitable for connecting hollow sandwich steel tube concrete members comprises a node frame, a connecting steel plate and an annular steel plate; the annular steel plate is fixed at the end part of the hollow sandwich steel tube concrete member and is welded with the inner steel tube and the outer steel tube of the hollow sandwich steel tube concrete member, the inner edge extends into the inner steel tube, and the outer edge extends out of the outer steel tube; the annular steel plate is provided with two circles of bolt holes, the outer circle of bolt holes are positioned on the outer side of the outer steel pipe, and the inner circle of bolt holes are positioned on the inner side of the inner steel pipe; the connecting steel plate is fixed on the node frame; and two circles of bolt holes are arranged on the connecting steel plate and correspond to the two circles of bolt holes of the annular steel plate, so that the connecting steel plate is connected with the annular steel plate through bolts.
Preferably, the number of the connecting steel plates is six, and the connecting steel plates are divided into end steel plates and side steel plates, the end steel plates are arranged at the upper end and the lower end of the node frame, and the side steel plates are arranged on the front side, the rear side, the left side and the right side of the node frame.
Preferably, the node frame comprises a central steel pipe, two middle steel plates, a plurality of square stiffening ribs and a plurality of triangular stiffening ribs; the middle steel plate is sleeved outside the central steel tube and is welded and fixed with the central steel tube, the end steel plates are welded at the upper end and the lower end of the central steel tube, and the two end steel plates are parallel to the two middle steel plates; the central steel pipe is positioned on the inner side of the inner ring bolt hole of the end steel plate; the front side, the rear side, the left side and the right side of the end steel plate and the middle steel plate are all four straight edges, for the same end steel plate or middle steel plate, the four straight edges are positioned on the same square, and for the same side of the two end steel plates and the two middle steel plates, the four straight edges are aligned, so that the side steel plates are welded on the four straight edges; a square stiffening rib is welded between the end steel plate and the middle steel plate, a square stiffening rib is welded between the two middle steel plates, a triangular stiffening rib is welded between the side steel plate and the end steel plate, and a triangular stiffening rib is welded between the side steel plate and the middle steel plate; the square stiffening ribs and the triangular stiffening ribs are staggered with the bolt holes for connecting the steel plates.
Preferably, for the same end steel plate or middle steel plate, two adjacent straight edges are connected through an inward-concave arc.
Preferably, the adjacent side steel plates are provided with a gap after assembly for inserting a tool for bolt fastening operation.
As a preferred, between upper end steel sheet and the upper middle steel sheet, between upper middle steel sheet and the lower middle steel sheet, respectively set up the square stiffening rib of one deck between lower floor middle steel sheet and the lower floor tip steel sheet, in every layer, the quantity of square stiffening rib is the polylith, encircles central steel pipe circumference equipartition, and the inboard welding of square stiffening rib is on the lateral wall of central steel pipe.
Preferably, the upper end face of the upper-layer end steel plate, the upper end face of the upper-layer middle steel plate, the lower end face of the upper-layer middle steel plate, the upper end face of the lower-layer middle steel plate, the lower end face of the lower-layer middle steel plate and the lower end face of the lower-layer end steel plate are all provided with one layer of triangular stiffening ribs, in each layer, the number of the triangular stiffening ribs is eight, two stiffening ribs are arranged on each side, and the outer right-angle sides of the triangular stiffening ribs are welded on the inner sides of the side steel plates.
Preferably, the number of the hollow sandwich concrete-filled steel tube members is six, and each hollow sandwich concrete-filled steel tube member with the end welded ring-shaped steel plate is connected with one connecting steel plate through a bolt.
Preferably, the inner steel pipe and the outer steel pipe are both round pipes; the annular steel plate is ring-shaped, and the inner ring bolt holes and the outer ring bolt holes of the annular steel plate are uniformly distributed along the circumference and concentrically arranged.
Preferably, the node frame, the connecting steel plate and the annular steel plate are all made of steel.
The principle of the invention is as follows: utilize the characteristics that steel dead weight is light, convenient to process and installation, design an assembled node suitable for cavity intermediate layer steel pipe concrete component connection, under the condition of guaranteeing node bearing capacity, adopt bolted connection to be connected node and cavity intermediate layer steel pipe concrete component, reach detachable assembled effect to all there is bolted connection at cavity intermediate layer steel pipe concrete component inside and outside, guarantee the homogeneity of biography power, avoid stress concentration.
The invention has the following advantages:
1. the inner side and the outer side of the hollow sandwich steel pipe concrete member are connected by bolts, so that uniform stress is realized.
2. Only need be at the tip welding annular steel sheet of cavity intermediate layer concrete filled steel tube component, cavity intermediate layer concrete filled steel tube component can carry out bolted connection with the main body frame of node, and the installation and the dismantlement of being convenient for reach the effect of assembled node.
3. The effect of connecting a plurality of cavity intermediate layer steel pipe concrete component on same node has been realized, is six directions at most, even the cavity intermediate layer steel pipe concrete component is the pipe can also.
4. The arrangement of the square stiffening ribs and the triangular stiffening ribs ensures that the joint does not generate instability damage while meeting the requirement of bearing capacity. Due to the special arrangement mode, the rigidity of the node is ensured, and meanwhile, a space for bolt fastening operation is reserved.
5. The integral structure is simple, the node is not formed by too many parts, and the production, the processing and the installation are more convenient. The welding and the bolt connection are adopted, the connection form is simple, the processing and the installation are convenient, and the aim of field installation can be achieved.
6. The steel is adopted for manufacturing, and the construction technology is simple and convenient and durable.
Drawings
Fig. 1 is a perspective view of a center steel pipe.
Fig. 2 is a schematic view of welding an end steel plate and a middle steel plate on the basis of fig. 1.
Fig. 3 is a schematic view of welding square stiffeners on the basis of fig. 2.
FIG. 4 is a schematic view of welding triangular stiffeners and side steel plates to the base of FIG. 3.
Fig. 5 is a diagram of an application scenario of the present invention.
FIG. 6 is a nodal finite element simulation.
The concrete-filled steel tube comprises a steel tube body, wherein the steel tube body comprises an annular steel plate 1, an end steel plate 2, a side steel plate 3, a middle steel plate 4, a central steel tube 5, a square stiffening rib 6, a triangular stiffening rib 7, a straight edge 8, an arc 9, a hollow sandwich steel tube concrete member 10 and a bolt hole 11.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
Example one
An assembled node suitable for connecting hollow sandwich steel tube concrete members comprises a node frame, a connecting steel plate and an annular steel plate; the annular steel plate is fixed at the end part of the hollow sandwich steel tube concrete member and is welded with the inner steel tube and the outer steel tube of the hollow sandwich steel tube concrete member, the inner edge extends into the inner steel tube, and the outer edge extends out of the outer steel tube; the annular steel plate is provided with two circles of bolt holes, the outer circle of bolt holes are positioned on the outer side of the outer steel pipe, and the inner circle of bolt holes are positioned on the inner side of the inner steel pipe; the connecting steel plate is fixed on the node frame; the connecting steel plate is provided with two circles of bolt holes which correspond to the two circles of bolt holes of the annular steel plate, so that the connecting steel plate is connected with the annular steel plate through bolts.
The number of connecting steel plates is six, divide into tip steel sheet and side steel sheet, and the tip steel sheet sets up in the upper and lower both ends of node frame, and the side steel sheet sets up in the front, back, left and right side of node frame.
The node frame comprises a central steel pipe, two middle steel plates, a plurality of square stiffening ribs and a plurality of triangular stiffening ribs; the middle steel plate is sleeved outside the central steel tube and is welded and fixed with the central steel tube, the end steel plates are welded at the upper end and the lower end of the central steel tube, and the two end steel plates and the two middle steel plates are parallel to each other; the central steel pipe is positioned on the inner side of the inner ring bolt hole of the end steel plate; the front side, the rear side, the left side and the right side of the end steel plate and the middle steel plate are all four straight edges, for the same end steel plate or middle steel plate, the four straight edges are positioned on the same square, and for the same side of the two end steel plates and the two middle steel plates, the four straight edges are aligned, so that the side steel plates are welded on the four straight edges; a square stiffening rib is welded between the end steel plate and the middle steel plate, a square stiffening rib is welded between the two middle steel plates, a triangular stiffening rib is welded between the side steel plate and the end steel plate, and a triangular stiffening rib is welded between the side steel plate and the middle steel plate; the square stiffening ribs and the triangular stiffening ribs are staggered with the bolt holes for connecting the steel plates.
For the same end steel plate or middle steel plate, two adjacent straight edges are connected through an inwards concave arc.
And a gap is reserved between the adjacent side steel plates after assembly, and the adjacent side steel plates are used for extending into a tool to perform bolt fastening operation.
Between upper end portion steel sheet and the upper middle part steel sheet, between upper middle part steel sheet and the lower floor middle part steel sheet, respectively set up the square stiffening rib of one deck between lower floor middle part steel sheet and the lower floor tip steel sheet, in every layer, the quantity of square stiffening rib is the polylith, encircles central steel pipe circumference equipartition, and the inboard welding of square stiffening rib is on the lateral wall of central steel pipe.
The up end of upper end portion steel sheet, the up end of upper middle part steel sheet, the lower terminal surface of upper middle part steel sheet, the up end of lower floor middle part steel sheet, the lower terminal surface of lower floor's tip steel sheet all set up one deck triangle-shaped stiffening rib, and in every layer, the quantity of triangle-shaped stiffening rib is eight, and every side sets up two, and the inboard at the side steel sheet is welded to the outside right-angle side of triangle-shaped stiffening rib.
The number of the hollow sandwich steel tube concrete members is six, and each hollow sandwich steel tube concrete member with the end part welded with the annular steel plate is connected with one connecting steel plate through a bolt.
The inner steel pipe and the outer steel pipe are both round pipes; the annular steel plate is ring-shaped, and the inner ring bolt holes and the outer ring bolt holes of the annular steel plate are uniformly distributed along the circumference and concentrically arranged.
The node frame, the connecting steel plate and the annular steel plate are all made of steel.
In this embodiment, a certain design size is taken as an example. The outer diameter of the central steel pipe is 540mm, the wall thickness is 10mm, and the height is 680mm, as shown in figure 1; the diameter of a central opening of the end steel plate and the middle steel plate is 540mm, the thickness of the steel plate is 20mm, the side length of the steel plate is 720mm, adjacent side lengths are connected by adopting an inner fillet, the middle steel plate is sleeved into the central steel pipe from the central opening, one steel plate is arranged at intervals of 170mm along the height direction, the middle steel plate and the end steel plate are connected with the central steel pipe by adopting the way that the upper opening and the lower opening of the steel plate are welded with the steel pipe, the upper end steel plate and the lower end steel plate are provided with two circles of bolt holes, the diameter of the bolt holes is 10mm, and the inner ring and the outer ring are respectively provided with 8 bolt holes in every 45-degree direction, which is specifically shown in figure 2; welding square stiffening ribs, wherein the placement positions of the square stiffening ribs are positioned in the middle of the opening angle of the bolt so as to avoid connecting with a member to block the use of the bolt later, 8 square stiffening ribs are placed on each layer, and the square stiffening ribs are connected with a middle steel plate and an end steel plate by welding, and the specific arrangement is shown in figure 3; the four side steel plates are all subjected to hole opening of bolt holes, the hole opening mode is the same as that of the end steel plates, the side length of each side steel plate is 1000mm, the thickness of each side steel plate is 20mm, adjacent sides are not connected through fillets, the four side steel plates are respectively connected with the middle steel plate and the end steel plates through four lateral angles in a welding mode, then triangular stiffening ribs are added, the triangular stiffening ribs are placed at the edge positions of the fillets, all the connection modes are welded connection, and the specific arrangement mode is shown in figure 4. When the hollow sandwich layer concrete filled steel tube member is installed, the annular steel plate is welded at the end part of the hollow sandwich layer concrete filled steel tube member, and the hollow sandwich layer concrete filled steel tube member can be connected with the connecting steel plate through two circles of bolts, as shown in fig. 5.
And in addition, modeling calculation is carried out by adopting finite elements to simulate the node, the limit bearing capacity of the hollow sandwich steel pipe concrete member is applied to six surfaces of the member, and whether the member is deformed greatly or reaches the limit strength is verified. As shown in fig. 6, the steel material is Q390, so that the stress cloud graph shows that the node steel material satisfies the ultimate bearing strength, and thus the node is feasible. According to the simulation result, the joint connecting steel plate is connected by adopting an inner circle of bolt and an outer circle of bolt, so that the stress is uniform.
Example two
In the embodiment, only three hollow sandwich layer concrete-filled steel tube members are adopted, the end part of each hollow sandwich layer concrete-filled steel tube member is welded with an annular steel plate, and in the three hollow sandwich layer concrete-filled steel tube members, two of the three hollow sandwich layer concrete-filled steel tube members are connected with end steel plates through bolts, and the other hollow sandwich layer concrete-filled steel tube member is connected with side steel plates through bolts.
The embodiment is not described in the first embodiment.
EXAMPLE III
The interior steel pipe and the outer steel pipe of this embodiment cavity intermediate layer steel pipe concrete component are squarely, and the annular steel sheet is square ring-shaped, and the interior, the outer lane bolt of annular steel sheet all arranges along squarely, and the interior, the outer lane bolt of connecting steel sheet all arranges along squarely. The number of the hollow sandwich steel tube concrete members is six. The central steel pipe is a square pipe, and the square stiffening ribs are arranged along a square ring.
The embodiment is not described in the first embodiment.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such modifications are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides an assembled node suitable for cavity intermediate layer steel pipe concrete member connects which characterized in that: the node frame comprises a node frame, a connecting steel plate and an annular steel plate; the annular steel plate is fixed at the end part of the hollow sandwich layer steel tube concrete member and is welded with the inner steel tube and the outer steel tube of the hollow sandwich layer steel tube concrete member, the inner edge extends into the inner steel tube, and the outer edge extends out of the outer steel tube; the annular steel plate is provided with two circles of bolt holes, the outer circle of bolt holes are positioned on the outer side of the outer steel pipe, and the inner circle of bolt holes are positioned on the inner side of the inner steel pipe; the connecting steel plate is fixed on the node frame; the connecting steel plate is provided with two circles of bolt holes which correspond to the two circles of bolt holes of the annular steel plate, so that the connecting steel plate is connected with the annular steel plate through bolts.
2. An assembled node suitable for hollow sandwich steel tube concrete member connection according to claim 1, characterized in that: the number of connecting steel plates is six, divide into tip steel sheet and side steel sheet, and the tip steel sheet sets up in the upper and lower both ends of node frame, and the side steel sheet sets up in the front, back, left and right side of node frame.
3. The fabricated node suitable for hollow sandwich concrete-filled steel tube member connection according to claim 2, characterized in that: the node frame comprises a central steel pipe, two middle steel plates, a plurality of square stiffening ribs and a plurality of triangular stiffening ribs; the middle steel plate is sleeved outside the central steel tube and is welded and fixed with the central steel tube, the end steel plates are welded at the upper end and the lower end of the central steel tube, and the two end steel plates are parallel to the two middle steel plates; the central steel pipe is positioned on the inner side of the inner ring bolt hole of the end steel plate; the front side, the rear side, the left side and the right side of the end steel plate and the middle steel plate are all four straight edges, for the same end steel plate or middle steel plate, the four straight edges are positioned on the same square, and for the same side of the two end steel plates and the two middle steel plates, the four straight edges are aligned, so that the side steel plates are welded on the four straight edges; a square stiffening rib is welded between the end steel plate and the middle steel plate, a square stiffening rib is welded between the two middle steel plates, a triangular stiffening rib is welded between the side steel plate and the end steel plate, and a triangular stiffening rib is welded between the side steel plate and the middle steel plate; the square stiffening ribs and the triangular stiffening ribs are staggered with the bolt holes of the connecting steel plates.
4. A fabricated node suitable for hollow sandwich steel tube concrete structural member connection according to claim 3, wherein: for the same end steel plate or middle steel plate, two adjacent straight edges are connected through an inwards concave arc.
5. An assembled node suitable for hollow sandwich steel tube concrete member connection according to claim 4, characterized in that: and a gap is reserved between the adjacent side steel plates after assembly, and the adjacent side steel plates are used for extending into a tool to perform bolt fastening operation.
6. A fabricated node suitable for hollow sandwich steel tube concrete structural member connection according to claim 3, wherein: between upper end portion steel sheet and the upper middle part steel sheet, between upper middle part steel sheet and the lower floor middle part steel sheet, respectively set up the square stiffening rib of one deck between lower floor middle part steel sheet and the lower floor tip steel sheet, in every layer, the quantity of square stiffening rib is the polylith, encircles central steel pipe circumference equipartition, and the inboard welding of square stiffening rib is on the lateral wall of central steel pipe.
7. A fabricated node suitable for hollow sandwich steel tube concrete structural member connection according to claim 3, wherein: the up end of upper end portion steel sheet, the up end of upper middle part steel sheet, the lower terminal surface of upper middle part steel sheet, the up end of lower floor middle part steel sheet, the lower terminal surface of lower floor's tip steel sheet all set up one deck triangle-shaped stiffening rib, and in every layer, the quantity of triangle-shaped stiffening rib is eight, and every side sets up two, and the outside right angle limit welding of triangle-shaped stiffening rib is in the inboard of side steel sheet.
8. An assembled node suitable for hollow sandwich steel tube concrete member connection according to claim 2, characterized in that: the number of the hollow sandwich layer concrete-filled steel tube members is six, and each hollow sandwich layer concrete-filled steel tube member with the end part welded with the annular steel plate is connected with one connecting steel plate through a bolt.
9. The fabricated node suitable for hollow sandwich concrete-filled steel tube member connection according to claim 1, characterized in that: the inner steel pipe and the outer steel pipe are both round pipes; the annular steel plate is ring-shaped, and the inner ring bolt holes and the outer ring bolt holes of the annular steel plate are uniformly distributed along the circumference and concentrically arranged.
10. The fabricated node suitable for hollow sandwich concrete-filled steel tube member connection according to claim 1, characterized in that: the node frame, the connecting steel plate and the annular steel plate are all made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210755315.1A CN115182451B (en) | 2022-06-29 | 2022-06-29 | Assembled node suitable for hollow interlayer steel pipe concrete member connection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210755315.1A CN115182451B (en) | 2022-06-29 | 2022-06-29 | Assembled node suitable for hollow interlayer steel pipe concrete member connection |
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| CN115182451A true CN115182451A (en) | 2022-10-14 |
| CN115182451B CN115182451B (en) | 2024-09-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114319585A (en) * | 2021-12-14 | 2022-04-12 | 中铁五局集团建筑工程有限责任公司 | Plane steel truss node connecting device |
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| CN114319585B (en) * | 2021-12-14 | 2024-01-23 | 中铁五局集团建筑工程有限责任公司 | Plane steel truss node connecting device |
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