CN218116967U - Hollow sandwich steel tube concrete member and hollow sandwich steel tube concrete column - Google Patents
Hollow sandwich steel tube concrete member and hollow sandwich steel tube concrete column Download PDFInfo
- Publication number
- CN218116967U CN218116967U CN202222147891.6U CN202222147891U CN218116967U CN 218116967 U CN218116967 U CN 218116967U CN 202222147891 U CN202222147891 U CN 202222147891U CN 218116967 U CN218116967 U CN 218116967U
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- connecting plate
- plate mounting
- concrete
- mounting groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
The utility model provides a cavity intermediate layer steel pipe concrete component and cavity intermediate layer steel pipe concrete column, including interior steel pipe and outer steel pipe, it has the concrete to fill between interior steel pipe and the outer steel pipe, the up end of concrete has prefabricated a plurality of upper junction plate mounting grooves that angle setting such as circumference along interior steel pipe, and the inside of inner steel pipe and the outside of outer steel pipe are connected to upper junction plate mounting groove, the lower terminal surface of concrete has prefabricated lower junction plate mounting groove corresponding with upper junction plate mounting groove, and lower junction plate mounting groove also communicates the inside of inner steel pipe and the outside of outer steel pipe, connect two sections cavity intermediate layer steel pipe concrete components through the connecting plate, avoided using flange connection upper segment, hypomere cavity intermediate layer steel pipe concrete component, the use quantity of bolt has been reduced, construction cost has been saved; meanwhile, the problem that the overall appearance of the structure is influenced by the overlarge diameter of the flange plate is avoided, and the technical problems that the installation and disassembly processes are complex and tedious when the hollow interlayer concrete-filled steel tube component is connected by the flange in the prior art are solved.
Description
Technical Field
The utility model belongs to cavity intermediate layer steel pipe concrete component connects the field, relates to a component, specifically is a cavity intermediate layer steel pipe concrete component and cavity intermediate layer steel core concrete column.
Background
The hollow sandwich steel pipe concrete member is a member which uses a hollow steel pipe to replace a part of solid concrete on the basis of the traditional steel pipe concrete member. The hollow sandwich steel pipe concrete member has the advantages of high bending rigidity, high bearing capacity, good fire resistance and the like. Compared with the common steel pipe concrete member, the hollow steel pipe concrete member has lighter weight and wider section because the inner core concrete is replaced by the hollow steel pipe, and is more and more widely applied to structures such as building structures, transmission towers, wind power tower drums and the like.
In addition, the hollow sandwich steel pipe concrete member is commonly used for building structures, and the attractive appearance of buildings is influenced by the size of an overlarge flange plate.
Disclosure of Invention
Not enough to prior art exists, the utility model aims to provide a cavity intermediate layer steel core concrete component and cavity intermediate layer steel core concrete column to installation and the complicated loaded down with trivial details technical problem of dismantlement technology when adopting flange joint cavity intermediate layer steel core concrete component among the solution prior art.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a hollow sandwich steel pipe concrete member comprises an inner steel pipe and an outer steel pipe, wherein concrete is filled between the inner steel pipe and the outer steel pipe, a plurality of upper connecting plate mounting grooves which are arranged along the circumferential direction of the inner steel pipe at equal angles are prefabricated on the upper end face of the concrete, the upper connecting plate mounting grooves are communicated with the inside of the inner steel pipe and the outside of the outer steel pipe, lower connecting plate mounting grooves corresponding to the upper connecting plate mounting grooves are prefabricated on the lower end face of the concrete, the lower connecting plate mounting grooves are also communicated with the inside of the inner steel pipe and the outside of the outer steel pipe, and connecting plates are inserted in the upper connecting plate mounting grooves; one end of the connecting plate stretches out of the upper connecting plate mounting groove, and the shape of the end of the connecting plate stretching out of the upper connecting plate mounting groove is matched with the shape of the lower connecting plate mounting groove.
The utility model discloses still include following technical feature:
adjacent upper connecting plate mounting grooves interval angle be 45, adjacent lower connecting plate mounting grooves equal interval angle be 45.
The cross section of the outer steel pipe is in a regular polygon shape or a circular shape.
When the cross section of the outer steel pipe is square, the upper connecting plate mounting groove comprises a first upper connecting plate mounting groove and a second upper connecting plate mounting groove, and the first upper connecting plate mounting groove and the second upper connecting plate mounting groove are arranged in a staggered mode; the first upper connecting plate mounting groove is positioned at the diagonal line of the section of the outer steel pipe, and the second upper connecting plate mounting groove is positioned at the midpoint of the sideline of the section of the outer steel pipe; the lower connecting plate mounting grooves comprise first lower connecting plate mounting grooves and second lower connecting plate mounting grooves, and the first lower connecting plate mounting grooves and the second lower connecting plate mounting grooves are arranged in a staggered mode; the first lower connecting plate mounting groove is positioned at the diagonal of the section of the outer steel pipe, and the second lower connecting plate mounting groove is positioned at the midpoint of the sideline of the section of the outer steel pipe.
The connecting plate comprises a first connecting plate and a second connecting plate, the first connecting plate is inserted in the first upper connecting plate mounting groove, and the second connecting plate is inserted in the second upper connecting plate mounting groove.
The contact position of the connecting plate and the inner wall of the inner steel pipe is welded.
A hollow sandwich steel tube concrete column comprises a plurality of hollow sandwich steel tube concrete members which are connected up and down.
Compared with the prior art, the utility model, profitable technological effect is:
the utility model connects two sections of hollow sandwich steel pipe concrete members through the connecting plate, avoids using flanges to connect the upper section and the lower section of hollow sandwich steel pipe concrete members, reduces the using amount of bolts and saves the construction cost; meanwhile, the problem that the overall appearance of the structure is influenced by the overlarge diameter of the flange plate is avoided, and the technical problem that the mounting and dismounting processes are complex and tedious when the flange plate is connected with the hollow sandwich concrete-filled steel tube component in the prior art is solved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic top view of the present invention;
fig. 3 is a schematic view of a partial structure of the present invention;
fig. 4 is a schematic structural view of the connection plate of the present invention;
FIG. 5 is a schematic structural view of the present invention during the assembly process;
FIG. 6 is a schematic diagram of finite element model boundary conditions and meshing;
FIG. 7 is a comparison of stress cloud charts of various parts when the outer steel pipe yields in a large area under the structural axial tension condition, wherein (a) is the outer steel pipe, (b) is the inner steel pipe, (c) is concrete, and (d) is the first connecting plate and the second connecting plate;
fig. 8 is a stress cloud chart contrast of each part when the structural cantilever is bent under the working condition that the top of the member is displaced by 140mm, wherein, (a) is an outer steel pipe, (b) is an inner steel pipe, (c) is concrete, and (d) is a first connecting plate and a second connecting plate.
The meaning of the individual reference symbols in the figures is: 1-inner steel pipe, 2-outer steel pipe, 3-concrete, 4-upper connecting plate mounting groove, 5-lower connecting plate mounting groove and 6-connecting plate;
401-a first upper connecting plate mounting groove, 402-a second upper connecting plate mounting groove;
501-a first lower connecting plate mounting groove, 502-a second lower connecting plate mounting groove;
601-first connecting plate, 602-second connecting plate.
The following examples are provided to explain the present invention in further detail.
Detailed Description
It should be noted that all the components of the present invention are known in the art, and the components are not specifically described.
The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and the equivalent transformations made on the basis of the technical solution of the present invention all fall into the protection scope of the present invention.
The utility model provides a hollow sandwich steel pipe concrete member, as shown in figures 1 to 5, including inner steel pipe 1 and outer steel pipe 2, it has concrete 3 to fill between inner steel pipe 1 and the outer steel pipe 2, the up end of concrete 3 has prefabricated a plurality of upper junction plate mounting grooves 4 along the circumference of inner steel pipe 1 equiangularly set up, and upper junction plate mounting groove 4 communicates the inside of inner steel pipe 1 and the outside of outer steel pipe 2, the lower end of concrete 3 has prefabricated lower junction plate mounting groove 5 corresponding to upper junction plate mounting groove 4, and lower junction plate mounting groove 5 also communicates the inside of inner steel pipe 1 and the outside of outer steel pipe 2, the upper junction plate mounting groove 4 is pegged graft with connecting plate 6; the one end of connecting plate 6 stretches out upper junction plate mounting groove 4, and the shape that connecting plate 6 stretches out the one end of upper junction plate mounting groove 4 matches with the shape of lower connecting plate mounting groove 5.
In the above technical solution, when the connection is performed, the connection plate 6 in one section of hollow sandwich concrete-filled steel tube member is correspondingly inserted into the lower connection plate installation groove 5 in another section of hollow sandwich concrete-filled steel tube member, so that the connection of the multiple sections of hollow sandwich concrete-filled steel tube members can be realized.
The two sections of hollow sandwich steel pipe concrete members are connected through the connecting plate 6, so that the condition that flanges are used for connecting the upper section and the lower section of hollow sandwich steel pipe concrete members is avoided, the using number of bolts is reduced, and the construction cost is saved; meanwhile, the problem that the overall appearance of the structure is influenced by the overlarge diameter of the flange plate is avoided, and the technical problems that the installation and disassembly processes are complex and tedious when the hollow interlayer concrete-filled steel tube component is connected by the flange in the prior art are solved.
Specifically, 4 interval angles of adjacent upper connecting plate mounting grooves are 45 degrees, 5 interval angles of adjacent lower connecting plate mounting grooves are 45 degrees, connection between members is guaranteed, and attractive effect is achieved.
Specifically, the cross-sectional shape of the outer steel pipe 2 is a regular polygon or a circle, which can be selected according to actual conditions.
Specifically, when the cross-sectional shape of the outer steel pipe 2 is square, the upper connecting plate mounting groove 4 includes a first upper connecting plate mounting groove 401 and a second upper connecting plate mounting groove 402, and the first upper connecting plate mounting groove 401 and the second upper connecting plate mounting groove 402 are arranged in a staggered manner; the first upper connecting plate mounting groove 401 is positioned at the diagonal line of the section of the outer steel pipe 2, and the second upper connecting plate mounting groove 402 is positioned at the midpoint of the sideline of the section of the outer steel pipe 2; the lower connecting plate mounting groove 5 comprises a first lower connecting plate mounting groove 501 and a second lower connecting plate mounting groove 502, and the first lower connecting plate mounting groove 501 and the second lower connecting plate mounting groove 502 are arranged in a staggered manner; the first lower connecting plate mounting groove 601 is located at a diagonal line of the section of the outer steel pipe 2, and the second lower connecting plate mounting groove 602 is located at a midpoint of a sideline of the section of the outer steel pipe 2.
Specifically, the connection plate 6 includes a first connection plate 601 and a second connection plate 602, the first connection plate 6 is inserted in the first upper connection plate installation groove 401, and the second connection plate 602 is inserted in the second upper connection plate installation groove 402.
Specifically, the contact position of the connecting plate 6 and the inner wall of the inner steel pipe 1 is welded, so that the strength of the connecting part of the component is ensured.
The utility model also provides a cavity intermediate layer steel core concrete column, including the cavity intermediate layer steel core concrete component that a plurality of meet from top to bottom.
Firstly, a connecting plate 6 extending out of an upper connecting plate mounting groove 4 on a first section of hollow sandwich concrete-filled steel tube member is inserted into a lower connecting plate mounting groove 5 on a second section of hollow sandwich concrete-filled steel tube member, and the rest is done in the same way, so that the hollow sandwich concrete-filled steel tube column can be obtained.
The stress of the hollow sandwich steel tube concrete member described in the above embodiment is clarified by finite element analysis as follows:
(1) Model building
Adopt finite element software ABAQUS 2019 right the utility model discloses carry out the finite element simulation, establish cavity intermediate layer steel pipe concrete component concatenation node model, the outer steel pipe cross-section of cavity intermediate layer steel pipe concrete component is square steel pipe 400 x 8mm, and interior steel pipe cross-section is circular steel pipe 160 x 8mm, and length is 800mm, and the size of first connecting plate and second connecting plate is respectively: 234X 450X 14mm, 158X 450X 14 mm.
All components in the finite element model adopt 8-node reduction integral entity units (C3D 8R). The steel adopts an ideal elastic-plastic model, the inner steel pipe and the outer steel pipe both adopt Q355 steel, and the yield strength is 355MPa. The interlayer concrete is C40 concrete, a plastic damage model is adopted, and relevant model parameters are shown in table 1.
TABLE 1 concrete plasticity damnification model parameters
The interaction between the steel pipe and the concrete mainly comprises normal contact and tangential bonding slippage, wherein the normal contact adopts hard contact simulation, and the tangential direction adopts a penalty function coulomb friction model, wherein the friction coefficient between the steel pipe and the concrete is 0.6. And (3) establishing 'Tie' constraint simulation welding connection, wherein the connection surface is consistent with the above. And controlling loading according to displacement, coupling the top surface and the bottom surface of the upper section and the lower section of the hollow sandwich concrete-filled steel tube component with the center of the inner steel tube, and applying displacement (the lower ends of the two working conditions are fixedly connected and the upper ends of the two working conditions are applied) according to a shaft pulling working condition and a cantilever bending working condition at coupled reference points respectively. In order to avoid the linear reduction integral unit from having the problem of hourglass and being too flexible, at least 4 units are divided along the thickness direction, and the specific grid division is shown in figure 6.
(2) Analysis of results
And (3) shaft pulling working condition: when the top displacement is increased to 1.29mm, the stress of the four corners of the outer steel tube at the end part of the upper and lower sections of the hollow sandwich steel tube concrete member and the end part of the notch reaches 355MPa. And (3) continuing to increase the displacement, extending the yield areas of the upper and lower sections of the hollow sandwich concrete-filled steel tube members to the middle, when the displacement of the top end is increased to 2.91mm, yielding the outer steel tubes of the upper and lower sections of the hollow sandwich concrete-filled steel tube members in a large area, yielding the inner steel tubes at the corresponding positions in a large area, keeping the splicing positions and the connecting plates in an elastic state, and showing a stress cloud chart in fig. 7. And continuously increasing the displacement, extending the yield area of the outer steel pipe to the splicing position, and when the length of the yield area of the splicing position is close to 50mm, the area of the yield area of the splicing position is not increased along with the increase of the displacement any more, and the connecting plate is in an elastic state in the whole process of the increase of the displacement.
The cantilever is subjected to a bending working condition: with the increase of the top displacement, the outer steel tube corner at the lowest end of the lower hollow sandwich concrete-filled steel tube member begins to yield, and at the moment, the stress of other parts is smaller. The displacement is increased continuously, and when the displacement of the top of the component reaches 140mm, a stress cloud chart is shown in figure 8. The outer steel pipe with the lower section hollow sandwich steel pipe concrete member and the notch downwards yields in a large area, the tension area of the inner steel pipe in the corresponding position also yields in a large area, at the moment, the stress of the upper section hollow sandwich steel pipe concrete member is small, and the first connecting plate and the second connecting plate are both in an elastic state in the whole process. Because of the existence of 8 connecting plates, the adverse effect of discontinuity of concrete and inner steel pipes at the butt joint surface is compensated, and the force transmission of the two sections of hollow sandwich steel pipe concrete members is reliable.
Claims (7)
1. A hollow sandwich steel pipe concrete member is characterized by comprising an inner steel pipe (1) and an outer steel pipe (2), wherein concrete (3) is filled between the inner steel pipe (1) and the outer steel pipe (2), a plurality of upper connecting plate mounting grooves (4) which are arranged at equal angles along the circumferential direction of the inner steel pipe (1) are preformed on the upper end surface of the concrete (3), the upper connecting plate mounting grooves (4) are communicated with the inside of the inner steel pipe (1) and the outside of the outer steel pipe (2), lower connecting plate mounting grooves (5) corresponding to the upper connecting plate mounting grooves (4) are preformed on the lower end surface of the concrete (3), the lower connecting plate mounting grooves (5) are also communicated with the inside of the inner steel pipe (1) and the outside of the outer steel pipe (2), and connecting plates (6) are inserted in the upper connecting plate mounting grooves (4); one end of the connecting plate (6) extends out of the upper connecting plate mounting groove (4), and the shape of the end of the connecting plate (6) extending out of the upper connecting plate mounting groove (4) is matched with the shape of the lower connecting plate mounting groove (5).
2. The hollow sandwich steel tube concrete unit according to claim 1, characterized in that adjacent said upper tie plate mounting grooves (4) are spaced apart by an angle of 45 ° and adjacent said lower tie plate mounting grooves (5) are spaced apart by an angle of 45 °.
3. The hollow sandwich steel tube concrete structure according to claim 1, characterized in that the cross-sectional shape of said outer steel tube (2) is a regular polygon or a circle.
4. The hollow sandwich steel pipe concrete structure according to claim 3, wherein, when the cross-sectional shape of the outer steel pipe (2) is square, the upper connection plate installation grooves (4) include first upper connection plate installation grooves (401) and second upper connection plate installation grooves (402), and the first upper connection plate installation grooves (401) and the second upper connection plate installation grooves (402) are alternately arranged; the first upper connecting plate mounting groove (401) is positioned at the diagonal line of the section of the outer steel pipe (2), and the second upper connecting plate mounting groove (402) is positioned at the midpoint of the sideline of the section of the outer steel pipe (2); the lower connecting plate mounting grooves (5) comprise first lower connecting plate mounting grooves (501) and second lower connecting plate mounting grooves (502), and the first lower connecting plate mounting grooves (501) and the second lower connecting plate mounting grooves (502) are arranged in a staggered mode; the first lower connecting plate mounting groove (601) is positioned at the diagonal of the section of the outer steel pipe (2), and the second lower connecting plate mounting groove (602) is positioned at the midpoint of the sideline of the section of the outer steel pipe (2).
5. The hollow sandwich steel pipe concrete structure according to claim 4, wherein said connection plate (6) comprises a first connection plate (601) and a second connection plate (602), said first connection plate (6) being inserted in the first upper connection plate installation groove (401), said second connection plate (602) being inserted in the second upper connection plate installation groove (402).
6. The hollow sandwich steel tube concrete structure according to claim 1, characterized in that the contact position of the connecting plate (6) and the inner wall of the inner steel tube (1) is welded.
7. A hollow sandwich concrete-filled steel tubular column comprising a plurality of hollow sandwich concrete-filled steel tubular elements according to any one of claims 1 to 6 connected one above the other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222147891.6U CN218116967U (en) | 2022-08-12 | 2022-08-12 | Hollow sandwich steel tube concrete member and hollow sandwich steel tube concrete column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222147891.6U CN218116967U (en) | 2022-08-12 | 2022-08-12 | Hollow sandwich steel tube concrete member and hollow sandwich steel tube concrete column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218116967U true CN218116967U (en) | 2022-12-23 |
Family
ID=84524150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222147891.6U Active CN218116967U (en) | 2022-08-12 | 2022-08-12 | Hollow sandwich steel tube concrete member and hollow sandwich steel tube concrete column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218116967U (en) |
-
2022
- 2022-08-12 CN CN202222147891.6U patent/CN218116967U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10851537B2 (en) | Assemblable structural column joint connection using fiber-reinforced concrete filled round double steel tubes and mounting method thereof | |
| CN211774635U (en) | Assembly and splicing structure for reverse bending points between precast concrete columns | |
| CN110924572B (en) | Calculation method for splicing nodes of steel plate bin combined shear wall | |
| US20220349171A1 (en) | Prefabricated concrete beam-column node and construction method therefor | |
| CN102677824A (en) | Special-shaped composite concrete-filled steel tube column matched with spiral stirrups and making method of special-shaped composite concrete-filled steel tube column | |
| CN111119410A (en) | Column splicing structure and method suitable for reinforced concrete assembled structure | |
| CN218116967U (en) | Hollow sandwich steel tube concrete member and hollow sandwich steel tube concrete column | |
| CN113585279A (en) | Special-shaped flange and foundation pit steel supporting structure using same | |
| CN215671419U (en) | Hollow interlayer concrete-filled steel tube member and splicing node thereof | |
| CN113123609B (en) | Method for mounting steel structure dome net rack with two low ends and high middle | |
| CN212866372U (en) | Extension node of prefabricated solid concrete filled steel tube member | |
| CN212248894U (en) | Structural column for umbrella-shaped building modeling | |
| CN210917965U (en) | Novel reinforcing steel bar connecting assembly | |
| CN210421986U (en) | Double-column structure underpinning node | |
| CN213868570U (en) | High-strength upright post | |
| CN105297891A (en) | Flexing constraint support and concrete beam-column T-shaped steel anchoring and connecting node | |
| CN219548555U (en) | Flange connection node and hollow interlayer steel pipe concrete transmission pole | |
| CN219175213U (en) | Hollow square pile mechanical connection structure | |
| CN219033576U (en) | Novel connecting node of steel pipe concrete column and steel reinforced concrete column | |
| CN221001412U (en) | Building connection structure | |
| CN114482567B (en) | Reusable assembled steel support connecting device | |
| CN215482994U (en) | Special-shaped flange for connecting square and rectangular pipes | |
| CN210713513U (en) | Novel truss structure | |
| CN214614591U (en) | Corrugated steel plate external reinforcing structure | |
| CN218323169U (en) | Built-in reinforcer's reorganization bamboo beam column concrete node |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |