CN220247379U - Seawater sea sand profile steel skeleton concrete structure - Google Patents
Seawater sea sand profile steel skeleton concrete structure Download PDFInfo
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- CN220247379U CN220247379U CN202321011436.1U CN202321011436U CN220247379U CN 220247379 U CN220247379 U CN 220247379U CN 202321011436 U CN202321011436 U CN 202321011436U CN 220247379 U CN220247379 U CN 220247379U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 80
- 239000010959 steel Substances 0.000 title claims abstract description 80
- 239000004567 concrete Substances 0.000 title claims abstract description 46
- 239000013535 sea water Substances 0.000 title claims abstract description 36
- 239000004576 sand Substances 0.000 title claims abstract description 35
- 239000000835 fiber Substances 0.000 claims abstract description 94
- 239000004568 cement Substances 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 46
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 22
- 239000004917 carbon fiber Substances 0.000 claims abstract description 22
- 239000000853 adhesive Substances 0.000 claims abstract description 13
- 230000001070 adhesive effect Effects 0.000 claims abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 210000003518 stress fiber Anatomy 0.000 claims abstract description 8
- 238000009941 weaving Methods 0.000 claims abstract description 4
- 238000009415 formwork Methods 0.000 claims description 28
- 229920002748 Basalt fiber Polymers 0.000 claims description 9
- 239000012783 reinforcing fiber Substances 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 18
- 239000011150 reinforced concrete Substances 0.000 abstract description 10
- 230000035939 shock Effects 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 description 10
- 230000006872 improvement Effects 0.000 description 10
- 238000004210 cathodic protection Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 239000013505 freshwater Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000010405 anode material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 150000002500 ions Chemical group 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000037072 sun protection Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model provides a seawater sea sand profile steel skeleton concrete structure, which comprises a permanent template made of mixed fiber reinforced cement-based materials, a profile steel skeleton and seawater sea sand concrete; the permanent template is positioned at the outer side of the profile steel framework, and the seawater sea sand concrete is filled in a cavity formed by the permanent template and the profile steel framework; the hybrid fiber reinforced cement-based material comprises a hybrid fiber cement-based material layer positioned at the inner layer and the outer layer and a hybrid fiber grid positioned in the middle, wherein the hybrid fiber grid is formed by weaving carbon fiber bundles and stress fiber bundles at intervals in a longitudinal-transverse mode; at the joints between the adjacent permanent templates, the fiber grids of the two permanent templates are connected through conductive adhesive. By adopting the technical scheme of the utility model, the durability and the shock resistance of the steel reinforced concrete structure are synchronously improved, the construction cost is reduced, and the construction efficiency of the structure is improved.
Description
Technical Field
The utility model belongs to the technical field of building structures, and particularly relates to a seawater sea sand profile steel skeleton concrete structure.
Background
At present, the using amount of the sand and stone aggregate in the construction engineering of China reaches 30 hundred million tons each year, the used fresh water also reaches billions tons, however, as the using amount is continuously increased, natural resources are gradually exhausted, the ecological environment is also destroyed, and meanwhile, the cost is also continuously increased. Therefore, in coastal cities and coastal islands, the civil buildings, industrial buildings and military buildings related to the construction of seawater sea sand concrete are adopted, so that the problem of high construction cost caused by long-distance transportation of inland raw materials can be effectively solved, and the problem of shortage of fresh water and river sand resources is greatly relieved. Studies have shown that the mechanical properties of seawater sea sand concrete materials and fresh water river sand concrete materials are basically consistent. However, compared with river sand and fresh water, sea sand and sea water are rich in a large amount of corrosive ions, and reinforced concrete structures in coastal cities and coastal islands are in chloride ion corrosion environments of sea water and offshore atmosphere for a long time, and the chloride ions can damage a passivation film on the surface of a reinforcing steel bar after corrosion and generate oxidation reaction, so that electrochemical corrosion is caused, the reinforcing steel bar corrosion can cause reduction of the section of the reinforcing steel bar, degradation of the bonding performance between the reinforcing steel bar and concrete, cracking and peeling of a concrete protection layer, and finally the durability problems of degradation of structural performance, reduction of bearing capacity, shortening of service life and the like are caused, and the carbon discharge of the building industry is increased.
Meanwhile, many coastal cities and sea areas in China are in high-intensity fortification areas, and high requirements are provided for earthquake-resistant design of the structure. In the earthquake-resistant design of a building structure, the design of the node is particularly critical, and the design principle of 'strong column and weak beam, strong shear and weak bending and strong node and weak member' is required to be followed, so that the node area is prevented from being damaged first, and the damage is led to occur on the beam member which is easy to repair. In addition, corrosion of corrosive ions in seawater and sea sand can lead to reduction of structural performance, so that the structure cannot resist seismic loads of original design intensity, and a failure mode can be changed from ductile failure to brittle failure.
The durability problems such as steel bar corrosion and the like caused by the seawater sea sand concrete not only shorten the service life of the structure, but also increase the damage risk of the structure under the action of earthquake, thereby causing the loss of personnel and property.
Disclosure of Invention
Aiming at the technical problems, the utility model discloses a seawater sea sand type steel skeleton concrete structure, which radically solves the durability problem of a reinforced concrete structure and the anti-seismic problem of beam column joints.
In this regard, the utility model adopts the following technical scheme:
a seawater sea sand profile steel skeleton concrete structure comprises a permanent template made of mixed fiber reinforced cement-based materials, a profile steel skeleton and seawater sea sand concrete; the permanent template is positioned at the outer side of the profile steel framework, and the seawater sea sand concrete is filled in a cavity formed by the permanent template and the profile steel framework; the hybrid fiber reinforced cement-based material comprises a hybrid fiber cement-based material layer positioned at the inner layer and the outer layer and a hybrid fiber grid positioned in the middle, wherein the hybrid fiber grid is formed by weaving carbon fiber bundles and stress fiber bundles at intervals in a longitudinal-transverse mode; and the two fiber grids are connected through a conductive adhesive at the joint between the adjacent permanent templates, and a mixed fiber cement-based material packaging layer is arranged on the surface of the joint. The mixed fiber cement-based material packaging layer is obtained by adopting the mixed fiber cement-based material to be packaged on the outer side of the joint.
By adopting the technical scheme, in the hybrid fiber grid, the carbon fiber bundles and the stress fiber bundles are distributed at intervals in two directions, the stress fiber bundles are used as stress reinforcing materials of the cement-based composite material, the carbon fiber bundles are used as auxiliary anode materials of the cement-based composite material, the two independent designs of the two fiber bundles take the advantages of the two into consideration, the contribution of the carbon fiber bundles to structural strength is not needed to be considered, the strength degradation possibly caused by external current to the stress fiber bundles is not needed to be considered, and the design of the fiber-reinforced grid is simplified.
As a further improvement of the utility model, the inner wall of the permanent template is provided with a plurality of grooves for increasing the interfacial adhesion performance of the cement-based material and the concrete material, so that the combination performance of the structure is better and the structure can bear externally applied load together.
As a further improvement of the utility model, the grooves are distributed in an array, and the depth of the grooves is 3-10mm and the width of the grooves is 5-15mm.
As a further improvement of the utility model, the stress fiber bundles are at least one of glass fiber bundles, basalt fiber bundles and aramid fiber bundles.
As a further improvement of the utility model, a cushion block is arranged between the profile steel framework and the inner wall of the permanent template.
Further, the cushion block is a cushion block made of a hybrid fiber cement-based material, that is, a cushion block made of a hybrid fiber cement-based material, and the hybrid fiber cement-based composite material in the prior art can be adopted.
Further, the cushion block array is arranged.
As a further improvement of the utility model, the cushion blocks are arranged at intervals of 300-800 mm around the profile steel framework.
Further, the cement-based cushion blocks are supported around the profile steel framework at intervals of 500mm, so that the profile steel framework is accurate in positioning, and the steel framework column is fixed after the profile steel framework is accurate in positioning.
As a further improvement of the utility model, the permanent formwork comprises a U-shaped beam permanent formwork and a hollow column permanent formwork, the profile steel framework comprises column profile steel and beam profile steel which are connected with each other, the column profile steel is positioned in the middle of the column permanent formwork, and the beam permanent formwork is positioned on the outer side of the beam profile steel; at the junction of the beam permanent form and the column permanent form, the fiber grid in the beam permanent form and the fiber grid in the column permanent form are connected by conductive adhesive.
As a further improvement of the utility model, the connection part of the column permanent template and the beam permanent template is provided with an opening, the hybrid fiber grid at the opening extends out, the hybrid fiber grid at the port of the beam permanent template extends out, and at the joint of the column permanent template and the beam permanent template, the two extending hybrid fiber grids are connected into a whole through a conductive adhesive and are packaged by adopting a hybrid fiber cement-based material. The adoption of the mixed fiber cement-based material for encapsulation can prevent the adhesive from being influenced by external environment. At the joint, the fiber grids of the two extend out, and the hybrid fiber grids in the beam and column members are integrated through the adhesive, so that the beam and column members are guaranteed to have good stress performance.
As a further improvement of the present utility model, the conductive adhesive is a conductive epoxy.
As a further refinement of the present utility model, the column permanent form may be square, round or polygonal, and the column permanent form and the beam permanent form may be reinforced concrete members, profiled steel skeleton concrete members or a combination thereof.
As a further improvement of the utility model, the interior of the hybrid fiber cement-based material layer is provided with chopped carbon fibers and reinforcing fibers. The hybrid fiber cement-based composite material comprises chopped carbon fibers and reinforcing fibers, wherein the chopped carbon fibers increase the conductivity of a cement matrix, so that an impressed current cathodic protection system is conveniently constructed, the reinforcing fibers increase the tensile and crack resistance of the cement-based material, the problem that a permanent formwork is likely to crack in the concrete pouring process can be avoided, and the hybrid fiber cement-based material can be lighter and stronger under the same performance requirement.
As a further improvement of the present utility model, the reinforcing fiber is at least one of PP fiber, PVA fiber, PE fiber.
Compared with the prior art, the utility model has the beneficial effects that:
firstly, by adopting the technical scheme of the utility model, the durability and the shock resistance of the seawater sea sand type steel concrete structure are synchronously improved, the problem of shortage of river sand and fresh water resources can be greatly relieved, the construction cost of the concrete structure is reduced, the construction efficiency of the structure is improved, and the seawater sea sand type steel concrete is beneficial to being widely popularized and used.
Secondly, by adopting the technical scheme of the utility model, the permanent template is fixed on the profile steel framework, so that the arrangement of an external temporary support is avoided, and the construction efficiency is improved. In the prior art, reinforced concrete structure node areas are adopted for crossing and anchoring of transverse and longitudinal steel bars, the workability is extremely poor, the quality is difficult to guarantee, and the technical scheme of the utility model adopts a profile steel structure, so that the complexity of the node areas can be further simplified, and the node quality is improved. Moreover, the section steel concrete has larger lateral rigidity and bearing capacity and excellent ductility and shock resistance, and the shock resistance and shock resistance of the structure can be greatly improved by adopting the section steel concrete, so that the construction mode is simplified, and the application process of sea water and sea sand recycling is accelerated. In addition, the use of the fiber reinforced cement-based composite material permanent template can save template consumption, form a combined structure together with concrete after construction is completed, bear force together, and the impressed current cathodic protection system can play a role after the construction of the structure is completed, so that the service life of the structure in a severe environment is greatly prolonged.
Drawings
FIG. 1 is a schematic diagram of a hybrid fiber cement-based column permanent formwork structure in accordance with an embodiment of the present utility model.
Fig. 2 is a schematic diagram of a hybrid fiber cement-based beam permanent formwork structure in accordance with an embodiment of the present utility model.
Fig. 3 is a schematic structural view of a hybrid fiber lattice according to an embodiment of the present utility model.
Fig. 4 is a schematic view of the column steel installation according to the embodiment of the present utility model, wherein (a) is a perspective view and (b) is a sectional view of the post member after installation.
Fig. 5 is a schematic view of the installation of beam section steel according to an embodiment of the present utility model.
Fig. 6 is a schematic view of the installation of the beam permanent formwork according to the embodiment of the present utility model, wherein (a) is a perspective view and (b) is a sectional view of the beam member after the installation.
Fig. 7 is a schematic diagram of a dc power connection according to an embodiment of the present utility model.
The reference numerals include:
1-column permanent templates, 2-beam permanent templates, 3-hybrid fiber cement-based material layers, 4-hybrid fiber grids, 5-grooves, 6-conductive epoxy resin, 7-hybrid fiber cement-based material packaging layers, 8-column section steel, 9-beam section steel, 10-cushion blocks, 11-shoulder pole supports, 12-steel belts and 13-direct current power supplies; 41-basalt fiber bundles and 42-carbon fiber bundles.
Detailed Description
Preferred embodiments of the present utility model are described in further detail below.
As shown in fig. 1 to 7, a seawater sea sand section steel skeleton concrete structure comprises a permanent formwork made of mixed fiber reinforced cement-based materials, a section steel skeleton and seawater sea sand concrete; the permanent template is positioned at the outer side of the profile steel framework, and the seawater sea sand concrete is filled in a cavity formed by the permanent template and the profile steel framework; the hybrid fiber reinforced cement-based material comprises an inner hybrid fiber cement-based material layer 3, an outer hybrid fiber cement-based material layer 3 and a hybrid fiber grid 4 positioned in the middle, wherein the hybrid fiber grid 4 is formed by weaving carbon fiber bundles 42 and basalt fiber bundles 41 in a vertically and horizontally spaced mode. Further, the inner layer of the hybrid fiber cement-based material layer 3 and the outer layer of the hybrid fiber cement-based material layer 3 are internally distributed with chopped carbon fibers and PVA fibers.
Specifically, as shown in fig. 1 and 2, the permanent formwork comprises a U-shaped beam permanent formwork 2 and a hollow column permanent formwork 1, the profile steel framework comprises column profile steel 8 and beam profile steel 9 which are connected with each other, the column profile steel 8 is positioned in the middle of the column permanent formwork 1, and the beam permanent formwork 2 is positioned on the outer side of the beam profile steel 9; at the junction of the beam permanent form 2 and the column permanent form 1, the fiber grid in the beam permanent form 2 and the fiber grid in the column permanent form 1 are connected by a conductive adhesive. The inner walls of the beam permanent formwork 2 and the column permanent formwork 1 are provided with a plurality of grooves 5 for improving the interfacial adhesion performance of the cement-based material and the concrete material. The grooves 5 are distributed in an array, and the depth of each groove 5 is 3-10mm and the width of each groove 5 is 5-15mm. It is further preferred that the depth of the groove 5 is 5mm and the width is 10mm.
A cement-based cushion block 10 is arranged between the column-shaped steel 8 and the inner wall of the column permanent template 1. The cement-based cushion blocks 10 are supported around the column permanent formwork 1 at intervals of 500mm, so that the column section steel 8 is accurately positioned, and the column section steel 8 is fixed after the column section steel 8 is accurately positioned.
The connection part of the column permanent template 1 and the beam permanent template 2 is provided with an opening, a hybrid fiber grid 4 at the opening extends out, the hybrid fiber grid 4 at the port of the beam permanent template 2 extends out, and at the joint part of the column permanent template 1 and the beam permanent template 2, the two extending hybrid fiber grids 4 are connected into a whole through a conductive adhesive, and are encapsulated by adopting a hybrid fiber cement-based material encapsulation layer 7.
As shown in fig. 3, the fiber grid inside the hybrid fiber reinforced cement-based material is a hybrid grid of continuous carbon fiber bundles 42 and basalt fiber bundles 41, the carbon fiber bundles 42 and basalt fiber bundles 41 are distributed at intervals in two directions, the basalt fiber bundles 41 are used as stress reinforcing materials of the cement-based composite material, the carbon fiber bundles 42 are used as auxiliary anode materials of the cement-based composite material, the two fiber bundles are independently designed, the contribution of the carbon fiber bundles 42 to structural strength is not considered, the strength degradation possibly caused by external current to the basalt fiber bundles 41 is not considered, and the design steps of the fiber reinforced grid are simplified. Further, chopped carbon fibers and PVA fibers are distributed in the cement-based composite material, wherein the chopped carbon fibers increase conductivity of a cement matrix, so that an impressed current cathodic protection system is conveniently constructed, the tensile and crack resistance of the cement-based material are increased by the chopped PVA fibers, the problem that a permanent formwork is likely to crack in the concrete pouring process can be avoided, and under the same performance requirement, the hybrid fiber cement-based material can be lighter and higher in weight and strength.
The column permanent formwork 1 is provided with the grooves 5 with the depth of 5mm and the width of 10mm on the inner wall of the beam permanent formwork 2, so that the interface bonding performance of the cement base and the concrete material is improved, the combination performance of the structure is better, and the external applied load is jointly borne.
In order to facilitate the connection of beam-column joints, a prefabricated complete column permanent template 1 is perforated at the joint of beam-column components, and a section of hybrid fiber grid 4 reserved at the edge of a hole is stretched out for the next splicing work, as shown in fig. 1; meanwhile, a part of the hybrid fiber grid 4 also extends out of the port part of the beam permanent template 2, so that the template is convenient to splice. The beam permanent template 2 and the column permanent template 1 are respectively provided with a hybrid fiber grid 4 extending at the joint, when in splicing, the fiber grids extending respectively are solidified at the joint by adopting conductive epoxy resin 6, so that the hybrid fiber grids 4 of the beam permanent template 2 and the column permanent template are connected into a whole, and are encapsulated by adopting a hybrid fiber cement-based material. The connection mode can keep the consistency of the electrified current density, and all fiber grids are connected into a whole, so that the construction of an impressed current cathodic protection system is facilitated.
The column steel 8 and the beam steel 9 in the structure are connected in a common steel structure connection mode to form a section steel framework capable of bearing force. The beam permanent formwork 2 and the column permanent formwork 1 are connected to the profile steel framework in a hanging and supporting mode, and external temporary supporting can be avoided. After the section steel and the permanent template are built, pouring seawater sea sand concrete, wherein the pouring process should be fully vibrated, but the vibrating rod can not contact the permanent template, so that the permanent template is prevented from cracking due to direct vibration of the vibrating rod. After pouring, watering is carried out fully, and the structure forming is completed without disassembling the template, so that the construction efficiency of the building structure is improved.
After curing for 28 days, the electrifying current of the component is designed according to the steel consumption. The stable direct current power supply 13 is adopted to control the current in the circuit, the component profile steel part is connected with the power supply cathode, the carbon fiber bundle 42 is connected with the power supply anode, after connection is completed, whether the equipment is normally operated is checked, whether the internal profile steel is protected is judged through corrosion current density, after the system is normally operated, protection measures such as water resistance, moisture resistance, sun protection and the like are adopted for the equipment and the circuit, and the construction of an impressed current cathode protection system is completed.
The hybrid fiber reinforced cement-based composite material in the embodiment consists of a hybrid fiber grid of continuous carbon fiber bundles and basalt fiber bundles and a hybrid fiber cement-based material of which the interior is distributed with chopped carbon fibers and PVA fibers, and can be used as an anode material of an impressed current cathodic protection system for prolonging the durability of a structure and also can be used as a reinforcing material for improving the shock resistance of the structure. In addition, the hybrid fiber reinforced cement-based composite material is prefabricated into a permanent template, and when in construction, the internal section steel is fixed, then the permanent template is fixedly hung on the section steel, and then the seawater sea sand concrete is poured. The structure can save template consumption, does not need to be provided with temporary supports, greatly quickens construction progress, shortens construction period and improves construction efficiency of the building structure. Meanwhile, the rigidity and the bearing capacity of the steel reinforced concrete structure are obviously higher than those of the reinforced concrete structure with the same size, so that the cross section size of the member can be reduced, the use space is increased, and the ductility performance of the steel reinforced concrete structure is obviously better than that of the reinforced concrete structure, and the steel reinforced concrete structure has good anti-seismic performance. After the structure is built, the internal section steel and the external mixed fiber reinforced cement-based material form an impressed current cathodic protection system, and the impressed current cathodic protection system is connected with current, so that the effect of improving the durability of the structure can be exerted from the initial stage of use, and the service life of the structure is prolonged.
The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.
Claims (10)
1. A sea water sea sand shaped steel skeleton concrete structure, its characterized in that: comprises a permanent template made of mixed fiber reinforced cement-based material, a profile steel framework and seawater sea sand concrete;
the permanent template is positioned at the outer side of the profile steel framework, and the seawater sea sand concrete is filled in a cavity formed by the permanent template and the profile steel framework;
the hybrid fiber reinforced cement-based material comprises a hybrid fiber cement-based material layer positioned at the inner layer and the outer layer and a hybrid fiber grid positioned in the middle, wherein the hybrid fiber grid is formed by weaving carbon fiber bundles and stress fiber bundles at intervals in a longitudinal-transverse mode;
and the two fiber grids are connected through a conductive adhesive at the joint between the adjacent permanent templates, and a mixed fiber cement-based material packaging layer is arranged on the surface of the joint.
2. The seawater sea sand section steel skeleton concrete structure of claim 1, wherein: the inner wall of the permanent template is provided with a plurality of grooves for increasing the interfacial adhesion performance of the cement-based material and the concrete material.
3. The seawater sea sand section steel skeleton concrete structure of claim 2, wherein: the grooves are distributed in an array, and the depth of each groove is 3-10mm and the width of each groove is 5-15mm.
4. The seawater sea sand section steel skeleton concrete structure of claim 1, wherein: the stress fiber bundles are at least one of glass fiber bundles, basalt fiber bundles and aramid fiber bundles.
5. The seawater sea sand section steel skeleton concrete structure of claim 1, wherein: the permanent formwork comprises a U-shaped beam permanent formwork and a hollow column permanent formwork, the profile steel framework comprises column profile steel and beam profile steel which are connected with each other, the column profile steel is positioned in the middle of the column permanent formwork, and the beam permanent formwork is positioned on the outer side of the beam profile steel; at the junction of the beam permanent form and the column permanent form, the fiber grid in the beam permanent form and the fiber grid in the column permanent form are connected by conductive adhesive.
6. The seawater sea sand skeleton concrete structure of claim 5, wherein: the connection part of the column permanent template and the beam permanent template is provided with an opening, the hybrid fiber grid at the opening stretches out, the hybrid fiber grid at the port of the beam permanent template stretches out, and the two stretched hybrid fiber grids are connected into a whole through a conductive adhesive at the joint part of the column permanent template and the beam permanent template and are packaged by adopting a hybrid fiber cement-based material layer.
7. The seawater sea sand skeleton concrete structure of claim 6, wherein: and a cushion block is arranged between the profile steel framework and the inner wall of the permanent template.
8. The seawater sea sand skeleton concrete structure of claim 6, wherein: the adhesive is conductive epoxy resin.
9. The seawater sea sand skeleton concrete structure of claim 5, wherein: the interior of the mixed fiber cement-based material layer is distributed with chopped carbon fibers and reinforcing fibers.
10. The seawater sea sand skeleton concrete structure of claim 9, wherein: the reinforcing fiber is at least one of PP fiber, PVA fiber and PE fiber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321011436.1U CN220247379U (en) | 2023-04-28 | 2023-04-28 | Seawater sea sand profile steel skeleton concrete structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321011436.1U CN220247379U (en) | 2023-04-28 | 2023-04-28 | Seawater sea sand profile steel skeleton concrete structure |
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| CN220247379U true CN220247379U (en) | 2023-12-26 |
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| CN202321011436.1U Active CN220247379U (en) | 2023-04-28 | 2023-04-28 | Seawater sea sand profile steel skeleton concrete structure |
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- 2023-04-28 CN CN202321011436.1U patent/CN220247379U/en active Active
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