CN219773431U - Explosion-resistant impact structure for improving column - Google Patents
Explosion-resistant impact structure for improving column Download PDFInfo
- Publication number
- CN219773431U CN219773431U CN202320922298.6U CN202320922298U CN219773431U CN 219773431 U CN219773431 U CN 219773431U CN 202320922298 U CN202320922298 U CN 202320922298U CN 219773431 U CN219773431 U CN 219773431U
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- Prior art keywords
- cfrp
- groove
- transverse
- arc
- layer
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- 238000004880 explosion Methods 0.000 title claims abstract description 27
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims abstract description 55
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 239000006260 foam Substances 0.000 claims abstract description 22
- 239000000853 adhesive Substances 0.000 claims abstract description 19
- 230000001070 adhesive effect Effects 0.000 claims abstract description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 40
- 229910052742 iron Inorganic materials 0.000 claims description 20
- 229920002396 Polyurea Polymers 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 2
- 229920006332 epoxy adhesive Polymers 0.000 claims 1
- 239000010410 layer Substances 0.000 description 46
- 239000003822 epoxy resin Substances 0.000 description 6
- 229920000647 polyepoxide Polymers 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
The utility model discloses an anti-explosion impact structure for improving a column, which comprises a CFRP layer, wherein the CFRP layer is wrapped and stuck on the outer edge surface of a concrete column, a transverse groove is formed on the outer edge surface of the concrete column, the CFRP layer is bent into the transverse groove at the transverse groove and wrapped on the inner side surface of the transverse groove, and a pressing device between the CFRP layers on the upper inner side surface and the lower inner side surface is arranged in the transverse groove; the CFRP layer is wrapped with a foam aluminum layer, and the outer side of the foam aluminum layer is wrapped with a steel plate; structural adhesives are arranged among the concrete column, the CFRP layer, the foamed aluminum layer and the steel plate; the utility model solves the problem that the building structure continuously collapses due to explosion impact.
Description
Technical Field
The utility model belongs to the field of engineering structure protection, and particularly relates to an anti-explosion impact structure for improving a column.
Background
Important building structures such as markets, warehouses, government authorities, hospitals, schools and the like can contain some articles with explosion hazards such as gas tanks, gas pipelines, dangerous chemicals and the like, the explosion can cause the damage of the building, and if a concrete column in the building is damaged or even collapses once the concrete column is damaged, important life and property losses are brought; the anti-explosion impact capability of the column is improved, so that the column is a reliable protective measure for preventing continuous collapse, the protection and safety requirements of the whole structure can be met at lower cost, and the existing concrete column has the risk of continuous collapse due to the fact that the anti-explosion impact capability of the existing concrete column is not strong, and the column ductility and the bearing capability are weak.
Disclosure of Invention
The utility model aims at: in order to solve the problem that the building structure is continuously collapsed due to explosion impact, the explosion impact resistant structure for improving the column is provided.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the explosion-resistant impact structure for improving the column comprises a CFRP layer which is wrapped and stuck on the outer edge surface of a concrete column, wherein a transverse groove is formed in the outer edge surface of the concrete column, the CFRP layer is bent into the transverse groove at the transverse groove and wrapped on the inner side surface of the transverse groove, and a pressing device between the CFRP layers on the upper inner side surface and the lower inner side surface is arranged in the transverse groove; the CFRP layer is wrapped with a foam aluminum layer, and the outer side of the foam aluminum layer is wrapped with a steel plate; structural adhesives are arranged among the concrete column, the CFRP layer, the foamed aluminum layer and the steel plate; bolts corresponding to the transverse grooves are inserted into the steel plates, the ends of the bolts penetrate through the steel plates and the foamed aluminum and are placed in the pressing device, and the bolts are screwed to enable the pressing device to extrude the upper inner side surface and the lower inner side surface of the transverse grooves.
As a further description of the above technical solution:
the outer edge surface of the concrete column is transversely wrapped and stuck with a plurality of transverse CFRP, the transverse CFRP are vertically arranged on the outer edge surface of the concrete column, and the edges of two adjacent transverse CFRP are mutually overlapped; a plurality of vertical CFRP are vertically stuck on the outer edge surfaces of the plurality of horizontal CFRP, a plurality of vertical CFRP are transversely arranged on the outer edge surfaces of the concrete columns, and the edges of two adjacent vertical CFRP are mutually overlapped to wrap the outer edge surfaces of the plurality of horizontal CFRP; the horizontal CFRP and the vertical CFRP form a CFRP layer together; structural adhesives are arranged among the concrete columns, the transverse CFRP and the vertical CFRP.
As a further description of the above technical solution:
the aluminum foam layer comprises four layers of aluminum foam layers from inside to outside, the four layers of aluminum foam layers have different densities and sequentially increase from inside to outside, and structural adhesive is arranged between every two adjacent layers of aluminum foam layers.
As a further description of the above technical solution:
the foamed aluminum is polyurea coated foamed aluminum.
As a further description of the above technical solution:
the steel plate is made of Q345.
As a further description of the above technical solution:
the structural adhesive is an epoxy resin adhesive.
As a further description of the above technical solution:
an upper rectangular block and a lower rectangular block which are symmetrical in center are arranged between the CFRP layers on the upper inner side surface and the lower inner side surface of the transverse groove, two arc-shaped grooves which are symmetrical in left and right are formed in the opposite end surfaces of the rectangular blocks, when the two rectangular blocks are attached together, the upper arc-shaped groove and the lower arc-shaped groove on different rectangular blocks form a whole circle, and threads are arranged in the arc-shaped grooves; the rectangular grooves are formed in the opposite end faces of the rectangular blocks, a sliding block is arranged in the rectangular grooves, the opposite end faces of the sliding block are inclined planes, a connecting hole is formed between the rectangular grooves and one of the arc grooves, an iron wire is arranged in the connecting hole, one end of the iron wire, which is arranged in the rectangular grooves, is fixed on the sliding block, the circle center of a whole circle formed by the upper and lower corresponding arc grooves is curled gradually at one end of the iron wire, which is arranged in the arc grooves, and hooks are formed at the tail ends of the iron wires; the upper rectangular block, the lower rectangular block, the sliding block and the iron wire form a compressing device together; the end of the bolt is inserted into a whole circle formed by the upper arc-shaped groove and the lower arc-shaped groove after the bolt is screwed, the end of the bolt is provided with a long groove, the hook falls into the long groove after the bolt rotates, and the iron wire can be curled on the bolt through the rotation of the bolt.
As a further description of the above technical solution:
the outer edge of the steel plate is internally provided with a through hole penetrating the steel plate and the foamed aluminum layer, the through hole is concentric with a whole circle formed by an upper arc-shaped groove and a lower arc-shaped groove, and the bolt is arranged in the through hole.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
(1) Through the CFRP layer, the ductility and the bearing capacity of the concrete column are improved, the explosion-resistant impact capacity of the concrete column is improved, the lateral displacement of the concrete column under the explosion effect is obviously reduced, and the development of microcracks is effectively inhibited;
(2) The foamed aluminum layer absorbs most of energy generated by explosion, so that the polyurea coated foamed aluminum has better bearing capacity and buffering and energy absorbing effects, and the polyurea coated foamed aluminum filling material has the characteristics of easiness in processing, easiness in installation and the like;
(3) The steel plate is wrapped around the outer periphery of the concrete column, so that the antiknock bearing capacity of the concrete column is improved, the ductility of the concrete column is improved, and meanwhile, secondary damage caused by fragments generated by explosion is effectively reduced.
(4) According to the utility model, all partial materials are integrated through the bolts and the pressing device, so that the explosion-proof capability of the whole is effectively improved.
Drawings
FIG. 1 is a front view of the present utility model;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 2;
FIG. 4 is a cross-sectional view C-C of FIG. 2, showing two slides 11 pressed against each other;
fig. 5 is a cross-sectional view of the pressing device, in which the two sliders 11 are not pressed against each other;
fig. 6 is a perspective view of the compression device.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-6, the present utility model provides a technical solution for improving the anti-explosion impact structure of a column:
the utility model provides an improve explosion-proof impact structure of post, includes the CFRP layer of parcel adhesion on concrete column 1 outer fringe face, opens horizontal groove 2 on concrete column 1 outer fringe face, and the CFRP layer is buckled in horizontal groove 2 department to wrap up on horizontal groove 2's medial surface, is equipped with the closing device between the CFRP layer on upper and lower medial surface in horizontal groove 2; the CFRP layer is wrapped with a foam aluminum layer, and the outer side of the foam aluminum layer is wrapped with a steel plate 3; structural adhesives are arranged among the concrete column 1, the CFRP layer, the foamed aluminum layer and the steel plate 3; the steel plate 3 is internally inserted with bolts 4 corresponding to the transverse grooves 2, the ends of the bolts 4 penetrate through the steel plate 3 and the foamed aluminum 7 and are placed in the pressing device, and the bolts 4 are screwed to enable the pressing device to press the upper inner side surface and the lower inner side surface of the transverse grooves 2.
The outer edge surface of the concrete column 1 is transversely wrapped and stuck with a plurality of transverse CFRP5, the transverse CFRP5 is vertically arranged on the outer edge surface of the concrete column 1, and the edges of two adjacent transverse CFRP5 are mutually overlapped; a plurality of vertical CFRP6 are vertically stuck on the outer edge surfaces of the plurality of horizontal CFRP5, a plurality of vertical CFRP6 are transversely arranged on the outer edge surface of the concrete column 1, the edges of two adjacent vertical CFRP6 are mutually overlapped, and the outer edge surfaces of the plurality of horizontal CFRP5 are all wrapped; the horizontal CFRP5 and the vertical CFRP6 jointly form a CFRP layer; structural adhesives are arranged among the concrete column 1, the transverse CFRP5 and the vertical CFRP 6.
The foam aluminum layer comprises four layers of foam aluminum 7 from inside to outside, the four layers of foam aluminum 7 have different densities and the density from inside to outside are sequentially increased, and structural adhesive is arranged between every two adjacent layers of foam aluminum 7.
The aluminum foam 7 is polyurea coated aluminum foam.
The steel plate 3 is made of Q345.
The structural adhesive is an epoxy resin adhesive.
An upper rectangular block 8 and a lower rectangular block 8 which are symmetrical in center are arranged between the CFRP layers on the upper inner side surface and the lower inner side surface of the transverse groove 2, two arc-shaped grooves 9 which are symmetrical in left and right are formed in the opposite end surfaces of the rectangular blocks 8, when the two rectangular blocks 8 are attached together, the upper arc-shaped groove 9 and the lower arc-shaped groove 9 on different rectangular blocks 8 form a whole circle, and threads are arranged in the arc-shaped grooves 9; a rectangular groove 10 arranged between two arc grooves 9 is formed in the opposite end surfaces of the rectangular block 8, a sliding block 11 is arranged in the rectangular groove 10, the opposite end surfaces of the sliding block 11 are inclined surfaces, a connecting hole 12 is formed between the rectangular groove 10 and one of the arc grooves 9, an iron wire 13 is arranged in the connecting hole 12, one end of the iron wire 13 arranged in the rectangular groove 10 is fixed on the sliding block 11, one end of the iron wire 13 arranged in the arc groove 9 is gradually curled up and down at the circle center of a whole circle formed by the two corresponding arc grooves 9, and a hook 14 is formed at the tail end of the iron wire 13; the upper rectangular block 8, the lower rectangular block 8, the sliding block 11 and the iron wire 13 form a compressing device together; the end of the bolt 4 is inserted into a whole circle formed by the upper arc-shaped groove 9 and the lower arc-shaped groove 9 after the bolt 4 is screwed, the end of the bolt 4 is provided with a long groove 15, the hook 14 falls into the long groove 15 after the bolt 4 rotates, and the iron wire 13 can be curled on the bolt 4 through the rotation of the bolt 4.
The outer edge of the steel plate 3 is internally provided with a through hole 16 penetrating the steel plate 3 and the foam aluminum layer, the through hole 16 is concentric with a whole circle formed by the upper arc-shaped groove 9 and the lower arc-shaped groove 9, and the bolt 4 is arranged in the through hole 16.
Working principle:
the orientation of the present utility model is based on figure 1.
Firstly, uniformly arranging a plurality of transverse grooves 2 on the surface of a concrete column 1, cleaning dust and impurities on the surface of the concrete column 1, polishing and flattening, uniformly coating epoxy resin adhesive on the surface of the concrete column 1, and enabling the thickness of an adhesive layer to be 0.1-0.15mm.
Then, the outer edge surface of the concrete column 1 is transversely wrapped and stuck with the transverse CFRP5, and the edges of the upper and lower adjacent transverse CFRP5 are mutually overlapped; and then a layer of epoxy resin adhesive is coated, a plurality of vertical CFRP6 edges are vertically adhered to the outer edge surface of the transverse CFRP5, and the adjacent two vertical CFRP6 edges are mutually overlapped, so that the outer edge surfaces of the plurality of transverse CFRP5 are all wrapped.
And then uniformly coating a layer of epoxy resin adhesive on the outer edge surface of the vertical CFRP6, sequentially adhering four layers of foamed aluminum 7 according to the sequentially increasing order of the density from inside to outside, wherein the density of the four layers of foamed aluminum 7 with different densities is selected to be 200-350kg/m < 3 >, the thickness of each layer is 15-20mm, and the adjacent two layers of foamed aluminum 7 are adhered by the epoxy resin adhesive.
A layer of steel plate 3 is stuck, the thickness is 5-25mm, through holes 16 on the steel plate 3 are aligned with the whole circle formed by the upper arc-shaped groove 9 and the lower arc-shaped groove 9 which correspond to the upper rectangular block 8 on the other rectangular block 8 in the groove of the concrete column 1, and bolts 4 are inserted and rotated; the bolts 4 rotate to enable hooks 14 to fall in long grooves 15, iron wires 13 are curled on the bolts 4 through the rotation of the bolts 4, on one hand, two rectangular blocks 8 are far away from each other by extruding arc grooves 9 on two sides, on the other hand, two sliding blocks 11 are pulled to slide relatively through the iron wires 13, the two sliding blocks 11 are far away from each other by extruding inclined surfaces on the sliding blocks 11, the two rectangular blocks 8 are far away from each other, the two rectangular blocks 8 respectively extrude CFRP layers on corresponding sides, and then the upper inner side surface and the lower inner side surface of the groove are extruded, so that the two rectangular blocks 8 are fixed in the groove; by sticking the materials of each layer and extruding the bolts 4 and the compacting device, the materials of each part form a whole, and the CFRP layer in the utility model improves the ductility and bearing capacity of the column, improves the explosion-resistant impact capacity of the concrete column 1, obviously reduces the lateral displacement of the concrete column 1 under the explosion effect and effectively inhibits the development of microcracks.
The foamed aluminum layer absorbs most of energy generated by explosion, so that the polyurea coated foamed aluminum has better bearing capacity and buffering and energy absorbing effects, and the polyurea coated foamed aluminum filling material has the characteristics of easiness in processing, easiness in installation and the like; the steel plate 3 is wrapped around the concrete column 1, so that the antiknock bearing capacity of the concrete column 1 is improved, the ductility of the concrete column 1 is improved, and secondary damage caused by fragments generated by explosion is effectively reduced.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and those skilled in the art should appreciate that the technical scheme and the inventive concept according to the present utility model are equivalent or changed within the scope of the present utility model.
Claims (8)
1. The explosion-resistant impact structure for improving the column is characterized by comprising a CFRP layer which is wrapped and stuck on the outer edge surface of a concrete column (1), wherein a transverse groove (2) is formed in the outer edge surface of the concrete column (1), the CFRP layer is bent into the transverse groove (2) at the position of the transverse groove (2) and wrapped on the inner side surface of the transverse groove (2), and a pressing device between the CFRP layers on the upper inner side surface and the lower inner side surface is arranged in the transverse groove (2); the CFRP layer is wrapped with a foam aluminum layer, and the outer side of the foam aluminum layer is wrapped with a steel plate (3); structural adhesives are arranged among the concrete column (1), the CFRP layer, the foamed aluminum layer and the steel plate (3); the steel plate (3) is internally inserted with bolts (4) corresponding to the transverse grooves (2), the ends of the bolts (4) penetrate through the steel plate (3) and the foamed aluminum (7) and are placed in the pressing device, and the pressing device is screwed to extrude the upper inner side surface and the lower inner side surface of the transverse grooves (2).
2. The explosion and impact resistant structure of the improved column according to claim 1, wherein the outer edge surface of the concrete column (1) is transversely wrapped and stuck with a plurality of transverse CFRP (5), the transverse CFRP (5) are vertically arranged on the outer edge surface of the concrete column (1), and the edges of two adjacent transverse CFRP (5) are mutually overlapped; a plurality of vertical CFRP (6) are vertically stuck on the outer edge surfaces of the plurality of horizontal CFRP (5), the plurality of vertical CFRP (6) are transversely arranged on the outer edge surfaces of the concrete columns (1), the edges of two adjacent vertical CFRP (6) are mutually overlapped, and the outer edge surfaces of the plurality of horizontal CFRP (5) are completely wrapped; the transverse CFRP (5) and the vertical CFRP (6) form a CFRP layer together; structural adhesives are arranged among the concrete column (1), the transverse CFRP (5) and the vertical CFRP (6).
3. The explosion-resistant impact structure for improving a column according to claim 1, wherein the foamed aluminum layer comprises four layers of foamed aluminum (7) from inside to outside, the four layers of foamed aluminum (7) have different densities and sequentially increase from inside to outside, and structural adhesive is arranged between every two adjacent layers of foamed aluminum (7).
4. An improved post blast resistant construction according to claim 1, wherein said aluminum foam (7) is polyurea coated aluminum foam.
5. The explosion impact resistant structure of the column according to claim 1, wherein the steel plate (3) is made of Q345.
6. The post blast resistant construction of claim 1, wherein the structural adhesive is an epoxy adhesive.
7. The explosion-resistant impact structure for improving the column according to claim 1, wherein an upper rectangular block (8) and a lower rectangular block (9) which are symmetrical in center are arranged between CFRP layers on the upper inner side surface and the lower inner side surface of the transverse groove (2), two arc-shaped grooves (9) which are symmetrical in left and right are formed in opposite end surfaces of the rectangular blocks (8), when the two rectangular blocks (8) are attached together, the upper arc-shaped groove (9) and the lower arc-shaped groove (9) on different rectangular blocks (8) form a whole circle, and threads are arranged in the arc-shaped grooves (9); rectangular grooves (10) arranged between two arc-shaped grooves (9) are formed in opposite end faces of the rectangular block (8), a sliding block (11) is arranged in each rectangular groove (10), opposite end faces of the sliding block (11) are inclined planes, a connecting hole (12) is formed between each rectangular groove (10) and one of the arc-shaped grooves (9), an iron wire (13) is arranged in each connecting hole (12), one end of each iron wire (13) arranged in each rectangular groove (10) is fixed on the corresponding sliding block (11), one end of each iron wire (13) arranged in each arc-shaped groove (9) is curled at the center of a whole circle formed by the corresponding arc-shaped grooves (9), and hooks (14) are formed at the tail ends of the corresponding iron wires (13); the upper rectangular block (8), the lower rectangular block (11) and the iron wire (13) form a compressing device together; the end of the bolt (4) is inserted into a whole circle formed by the upper arc-shaped groove (9) and the lower arc-shaped groove (9) which correspond to each other after the bolt (4) is screwed, the end of the bolt (4) is provided with the long groove (15), the hook (14) falls into the long groove (15) after the bolt (4) rotates, and the iron wire (13) can be curled on the bolt (4) through the rotation of the bolt (4).
8. The explosion and impact resistant structure for improving the column according to claim 7, wherein the outer edge of the steel plate (3) is internally provided with a through hole (16) penetrating through the steel plate (3) and the foam aluminum layer, the through hole (16) is concentric with a whole circle formed by the upper arc-shaped groove (9) and the lower arc-shaped groove (9), and the bolt (4) is arranged in the through hole (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320922298.6U CN219773431U (en) | 2023-04-21 | 2023-04-21 | Explosion-resistant impact structure for improving column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320922298.6U CN219773431U (en) | 2023-04-21 | 2023-04-21 | Explosion-resistant impact structure for improving column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219773431U true CN219773431U (en) | 2023-09-29 |
Family
ID=88132224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320922298.6U Active CN219773431U (en) | 2023-04-21 | 2023-04-21 | Explosion-resistant impact structure for improving column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219773431U (en) |
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2023
- 2023-04-21 CN CN202320922298.6U patent/CN219773431U/en active Active
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