CN220080267U - Sea sand concrete structure - Google Patents
Sea sand concrete structure Download PDFInfo
- Publication number
- CN220080267U CN220080267U CN202321280819.9U CN202321280819U CN220080267U CN 220080267 U CN220080267 U CN 220080267U CN 202321280819 U CN202321280819 U CN 202321280819U CN 220080267 U CN220080267 U CN 220080267U
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- China
- Prior art keywords
- steel bars
- sea sand
- sand concrete
- layer
- concrete structure
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- 239000004567 concrete Substances 0.000 title claims abstract description 54
- 239000004576 sand Substances 0.000 title claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 230000001681 protective effect Effects 0.000 claims abstract description 11
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 10
- 238000004873 anchoring Methods 0.000 claims abstract description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 10
- 239000004917 carbon fiber Substances 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 239000004570 mortar (masonry) Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 230000002829 reductive effect Effects 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 37
- 230000000694 effects Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000004210 cathodic protection Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- -1 shells Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
The utility model discloses a sea sand concrete structure, which comprises a sea sand concrete layer, a reinforced structure embedded in the sea sand concrete layer and a protective film layer attached to the outside of the sea sand concrete layer; the steel bar structure comprises a plurality of longitudinal steel bars, hooping bars connected to the outer sides among the longitudinal steel bars, and spiral FRP spiral steel bars arranged among the longitudinal steel bars; and a plurality of anchoring parts for fixing the FPR spiral reinforcing steel bars are arranged on the longitudinal reinforcing steel bars at intervals. The utility model overcomes the problems of reduced compressive strength and easy corrosion of concrete after sea sand is used by providing a novel concrete structure.
Description
Technical Field
The utility model belongs to the technical field of engineering, and particularly relates to a sea sand concrete structure.
Background
Concrete is one of the main building materials, and its use is quite huge in engineering construction. Meanwhile, the demand of sand as one of the components of concrete reaches a new height, and the estimated demand of the building sand in China in the 30 th century reaches 25 hundred million tons. In addition, due to the flood exploitation of river sand in recent years, resources are increasingly exhausted, and some areas have arrived at the place of 'one sand is difficult to solve'. The coastal area is also rich in seawater resources, and if the seawater and the sea sand can be fully utilized to serve as fresh water and river sand to be used for preparing concrete, the method has considerable economic and ecological benefits in future social development.
However, the physicochemical properties of sea sand have typical specificity, which also causes differences in concrete properties in concrete preparation, such as large specific surface area and angular morphology, so that when it is used as fine aggregate, more cement paste is consumed by being wrapped under the same conditions, which also reduces the compressive strength of concrete. On the other hand, part of sea salt contained in the sea sand can have corrosion effect on the concrete, thereby affecting the durability.
Disclosure of Invention
The utility model aims to provide a sea sand concrete structure, which solves the problems that the compressive strength of concrete is reduced and corrosion is easy to occur after sea sand is used by providing a novel concrete structure.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a sea sand concrete structure comprises a sea sand concrete layer, a reinforced bar structure embedded in the sea sand concrete layer and a protective film layer attached to the outside of the sea sand concrete layer; the steel bar structure comprises a plurality of longitudinal steel bars, hooping bars connected to the outer sides among the longitudinal steel bars, and spiral FRP spiral steel bars arranged among the longitudinal steel bars; and a plurality of anchoring parts for fixing the FPR spiral reinforcing steel bars are arranged on the longitudinal reinforcing steel bars at intervals.
Further, the anchor includes a straight threaded bore for attachment to the longitudinal rebar.
Further, the anchor further comprises a clip hole having a smooth arcuate inner wall.
Further, a reserved gap is formed on one side of the clamping hole and used for connecting and welding FRP spiral reinforcing steel bars.
Further, the protective film layer comprises a carbon fiber layer and a conductive mortar layer, wherein the carbon fiber layer is in a grid shape and wraps the outer side of the sea sand concrete layer.
Further, the conductive mortar layer is arranged outside the carbon fiber layer.
Compared with the prior art, the utility model has the advantages that: firstly, the FRP spiral steel bars are arranged between the longitudinal steel bars, and can provide effective restraining force for core concrete, so that the compressive capacity of the concrete after sea sand is used is enhanced.
And secondly, the protective film layer is arranged on the outer side of the sea sand concrete layer so as to be convenient to regulate and control by adopting an ICCP technology in the later period, and the corrosion of the reinforcing steel bars is effectively prevented and delayed so as to solve the problem of easy corrosion after sea sand is adopted.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and should not be considered limiting the scope, and that other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a sea sand concrete structure provided by the utility model.
Reference numerals: 1. a sea sand concrete layer; 2. longitudinal steel bars; 3. FRP spiral reinforcing steel bars; 4. stirrups; 5. an anchor; 6. and a protective film layer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. 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.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," "third," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang" and the like, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.
As shown in fig. 1, a sea sand concrete structure comprises a sea sand concrete layer 1, a reinforced structure embedded in the sea sand concrete layer 1 and a protective film layer 6 attached to the outside of the sea sand concrete layer 1; the steel bar structure comprises a plurality of longitudinal steel bars 2, hoops 4 connected to the outer sides among the longitudinal steel bars 2, and spiral FRP spiral steel bars 3 arranged among the longitudinal steel bars 2; a plurality of anchors 5 for fixing the FPR spiral bars are provided at intervals on the longitudinal bars 2.
In comparison with the prior art, in the prior art, it has been found that the main component of sea sand is quartz (SiO 2), and in addition, the sea sand contains feldspar, mica and other substances. Mainly focuses on the apparent morphology and the particle grade, and the sea sand surface is smoother and glossy due to long-term impact and polishing of sea water, and the apparent morphology of river sand is coarser and more granular. The influence of sea sand on the performance of concrete is mainly reflected in two aspects, and the first aspect is the influence of sea sand particle size and impurities such as shells, soil and the like contained in the sea sand on the mechanical performance of the concrete. The second aspect is that part of sea salt contained in the sea sand may have a corrosive effect on the concrete itself, thereby affecting its durability. In order to overcome the problems, the prior art proposes impressed current cathodic protection (Impressed Current Cathod ic Protect ion, abbreviated as ICCP) which is a technology for applying cathodic protection current to the steel bars in the concrete structure by adopting an auxiliary anode material to enable the potential to be negatively moved to an etching-free area, so as to protect the steel bars, and is recognized as a regulating and controlling method capable of effectively preventing and delaying the corrosion of the steel bars, but practice shows that even if ICCP is adopted, the effect of inhibiting the decrease of the mechanical properties of the concrete is still unavoidable. In the utility model, an FRP spiral reinforcement 3 is added in the original reinforcement assembly, and the external square stirrup 4 is matched with the internal spiral reinforcement assembly, so that the mechanical property of the concrete is greatly improved after the concrete is poured.
The anchor 5 comprises a straight threaded hole for connection to the longitudinal bar 2. The anchor 5 can be arranged at any position on the longitudinal screw steel bar through the straight screw hole, and effective condition positions are carried out, and the on-site adjustment is carried out according to design requirements, so that the flexibility is higher.
The anchor 5 further comprises a clamping hole with a smooth arc-shaped inner wall. One side of the clamping hole is provided with a reserved gap for connecting and welding the FRP spiral reinforcing steel bars 3. The FRP helical reinforcing steel bar 3 is fixed between the plurality of anchors 5 through the clamping holes with slits, and then is stabilized by welding.
The protective film layer 6 comprises a carbon fiber layer and a conductive mortar layer, wherein the carbon fiber layer is in a grid shape and wraps the outer side of the sea sand concrete layer 1. The conductive mortar layer is arranged on the outer side of the carbon fiber layer. The arrangement of the protective film layer 6 is beneficial to the work of ICCP in the later stage.
When the sea sand concrete structure is particularly used, the steel bar assembly structure is firstly manufactured and connected before pouring, a plurality of anchoring pieces 5 are respectively connected to the longitudinal steel bars 2 according to the actual situation of the site, one side with clamping holes is arranged on the inner side of the longitudinal steel bars 2, FRP spiral feeling connection is carried out on the basis of the anchoring pieces 5, and then square stirrups 4 are welded. Finally, pouring is carried out, a protective film layer 6 is attached after the concrete layer is poured, and carbon fiber short filaments can be added into the mortar when the conductive mortar layer is prepared, so that the working efficiency of the later-stage ICCP is enhanced.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (6)
1. The sea sand concrete structure is characterized in that: the marine sand concrete comprises a marine sand concrete layer (1), a reinforced structure embedded in the marine sand concrete layer (1) and a protective film layer (6) attached to the outside of the marine sand concrete layer (1); the steel bar structure comprises a plurality of longitudinal steel bars (2), hooping bars (4) connected to the outer sides among the longitudinal steel bars (2), and spiral FRP spiral steel bars (3) arranged among the longitudinal steel bars (2); a plurality of anchoring parts (5) for fixing the FPR spiral steel bars are arranged on the longitudinal steel bars (2) at intervals.
2. The sea sand concrete structure of claim 1, wherein: the anchor (5) comprises a straight threaded hole for connection to the longitudinal bar (2).
3. The sea sand concrete structure of claim 2, wherein: the anchoring element (5) further comprises a clamping hole with a smooth arc-shaped inner wall.
4. A sea sand concrete structure according to claim 3, characterized in that: one side of the clamping hole is provided with a reserved gap for connecting and welding the FRP spiral reinforcing steel bars (3).
5. The sea sand concrete structure of claim 1, wherein: the protective film layer (6) comprises a carbon fiber layer and a conductive mortar layer, wherein the carbon fiber layer is in a grid shape and wraps the outer side of the sea sand concrete layer (1).
6. The sea sand concrete structure of claim 5, wherein: the conductive mortar layer is arranged on the outer side of the carbon fiber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321280819.9U CN220080267U (en) | 2023-05-25 | 2023-05-25 | Sea sand concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321280819.9U CN220080267U (en) | 2023-05-25 | 2023-05-25 | Sea sand concrete structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220080267U true CN220080267U (en) | 2023-11-24 |
Family
ID=88827049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321280819.9U Active CN220080267U (en) | 2023-05-25 | 2023-05-25 | Sea sand concrete structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220080267U (en) |
-
2023
- 2023-05-25 CN CN202321280819.9U patent/CN220080267U/en active Active
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