Bamboo fiber pipe concrete column
By incorporating bamboo-reinforced cages and bamboo fiber concrete within concrete columns, combined with multi-layered bamboo fiber protective layers, the problem of insufficient tensile strength and durability in traditional concrete columns is solved, achieving efficient and low-cost building construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional concrete columns have shortcomings in terms of tensile strength, durability, and cost. They are particularly prone to corrosion in humid or corrosive environments, and traditional reinforcement methods are costly and environmentally unfriendly.
The bamboo fiber tube concrete column structure is adopted. By setting bamboo reinforcement cage, bamboo fiber concrete and multiple layers of bamboo fiber protective layer in the concrete, a composite reinforcement structure is formed to improve tensile and compressive strength. Bamboo reinforcement replaces part of the steel reinforcement to reduce costs.
It significantly improves the tensile strength and durability of concrete columns, reduces costs, and achieves green and environmentally friendly construction, making it suitable for the rapid construction of various building structures.
Smart Images
Figure CN224048518U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of concrete, especially to a bamboo fiber tube concrete column. BACKGROUND
[0002] In the field of building structures, concrete columns, as an important load-bearing component, are widely used in housing, bridges, tunnels and other engineering projects. Traditional concrete columns mainly rely on steel reinforcement to enhance their tensile properties, but due to the brittleness of concrete itself, the crack resistance is poor, and cracking or even damage may occur when subjected to large tensile or impact loads. In addition, steel is prone to rust in humid or corrosive environments, which reduces the durability of concrete columns and shortens their service life.
[0003] To improve the performance of concrete columns, various enhancement methods have been proposed in the prior art, mainly including the following categories:
[0004] Steel-reinforced concrete columns: By configuring longitudinal steel bars and transverse stirrups in concrete, the tensile and shear properties of concrete columns are improved. However, steel is prone to rust, especially in humid or corrosive environments, which can cause the concrete protective layer to peel off and reduce the durability of the structure.
[0005] Fiber-reinforced concrete columns: Steel fibers, glass fibers or synthetic fibers are added to concrete to improve the crack resistance and toughness of concrete. Steel fibers are expensive, glass fibers and synthetic fibers have poor adhesion to concrete, and uneven distribution of fibers may result in local strength deficiency.
[0006] Composite material reinforced concrete columns: Carbon fiber reinforced polymer (CFRP) or glass fiber reinforced polymer (GFRP) is used to wrap concrete columns to improve their tensile and compressive properties. CFRP and GFRP are expensive and complex to construct, and are prone to interfacial peeling in high humidity environments.
[0007] External protective layer technology: A waterproof coating or corrosion-resistant coating is applied to the outside of the concrete column to delay the corrosion of concrete and steel. The external protective layer is prone to aging or peeling, making it difficult to effectively protect the internal materials for a long time.
[0008] In summary, the existing concrete column enhancement methods in the prior art still have many shortcomings in terms of tensile properties, durability and cost. In particular, in terms of environmental protection and sustainability, the use of traditional steel and synthetic fibers not only has high cost, but also causes certain environmental burden. Therefore, it is of great significance to develop a concrete column structure that has high tensile properties, good durability, low cost and is environmentally friendly. SUMMARY
[0009] The utility model discloses a bamboo fiber pipe concrete column, through set up bamboo -steel reinforcement cage, bamboo fiber concrete and multilayer bamboo fiber protection layer's composite reinforcing structure, solve the problem of the existing concrete column reinforcing method in concrete tensile property, compressive property, durability.
[0010] A bamboo fiber pipe concrete column, including the column shell, the column shell is provided with cage structure, the column shell is filled with concrete, the concrete fills the inside of cage structure and is wrapped cage structure, the column shell periphery is provided with the protection layer, the protection layer is used for delaying the oxidation and corrosion of column shell,
[0011] Wherein, cage structure is staggered and is woven by steel bar and bamboo reinforcement, the concrete is provided with bamboo fiber, the protection layer is connected with the column shell outer surface through adhesive.
[0012] The utility model discloses the inside of column shell is staggered and is woven by steel bar and bamboo reinforcement, forms the spatial cage structure, and fills the concrete in the inside of column shell and cage structure, makes concrete and cage structure form fixed connection, significantly improves the tensile and compressive property of concrete, sets up bamboo fiber in the concrete, is used for improving the crack resistance and tenacity of concrete, pours the concrete of bamboo fiber in the column shell inside of the cage structure of steel bar-bamboo reinforcement setting, forms composite reinforcing structure, significantly improves tensile property and durability, and the bamboo reinforcement is used instead of steel bar and synthetic fiber, effectively reduces the cost. The concrete column of the utility model can carry out pre -processing production, and the degree of standardization and industrialization is high, ensures the flatness uniformity when installing later, and the volume and quality of prefabricated column are less than traditional assembly type prefabricated column, convenient transportation and installation are applicable to various building structures.
[0013] The column shell can select PVC pipe or FRP pipe.
[0014] Further, the steel bars and the bamboo reinforcements are all provided with a plurality of steel bars and bamboo reinforcements, the steel bars are arranged along the axial direction of the column shell, the bamboo reinforcements are sequentially connected with the plurality of steel bars to form a ring structure, the ring structure is provided with a plurality of steel bars along the axial direction of the steel bars, and the connection points of the bamboo reinforcements and the steel bars are fixed by binding.
[0015] The steel bars and the bamboo reinforcements are staggered and woven at a certain interval to form a cage structure, and the connection points are fixed by binding with bamboo fiber or stainless steel wire.
[0016] Further, a gap is formed between the outer portion of the cage structure and the inner wall of the column shell, and the concrete is filled in the gap.
[0017] Put the cage structure into the column shell, ensure that there is a gap between the cage structure and the column shell, ensure that the concrete can be fully filled, and make the cage structure and the inner wall of the column shell closely contact.
[0018] Further, the bamboo fibers are dispersed in the concrete, and the surface of the bamboo fibers is coated with an interface reinforcing agent.
[0019] The bamboo fibers and the concrete are fully mixed, which can effectively improve the crack resistance and toughness of the concrete. The length of the bamboo fibers is 20-50mm, and the volume of the concrete is 1%-3%. In order to prevent the interface bonding strength between the bamboo fibers and the concrete from being insufficient, resulting in the bamboo fibers not being able to fully play a reinforcing role in the concrete, or the overall performance may be reduced due to interface peeling, a layer of interface reinforcing agent such as silane coupling agent is coated on the surface of the bamboo fibers to improve the bonding performance of the bamboo fibers and the concrete.
[0020] Further, the protective layer is formed by continuously winding the bamboo fibers along the outer surface of the column shell, and the protective layer is provided with multiple layers, and the adjacent two layers of protective layers are connected by the adhesive.
[0021] The multi-layer winding mode and the use of adhesive to connect the adjacent two layers of protective layers can enhance the compactness and durability of the protective layer, effectively delay the oxidation and corrosion of the column shell. The winding mode can be cross winding or spiral winding, which ensures the uniform distribution and close fit of each layer of bamboo fibers. The adhesive can be neoprene or water-based polyurethane.
[0022] Further, the cage structure is provided with a reinforcing structure inside, the reinforcing structure includes a plurality of reinforcing bars, the two ends of the reinforcing bars are respectively connected with non-adjacent steel bars, and the reinforcing bars are intersected.
[0023] The reinforcing structure is arranged transversely in the cage structure to improve the anti-seismic performance of the structure. The multiple reinforcing bars are staggered to improve the overall stability of the cage structure. The reinforcing bars can be made of bamboo bars.
[0024] Further, the reinforcing structure has a plurality of reinforcing structures arranged along the axis of the cage structure in sequence, and the reinforcing bars and the steel bars are fixed by binding. The reinforcing bars and the steel bars are bound by bamboo fibers or stainless steel wires.
[0025] The reinforcing structure is arranged along the axis of the cage structure in sequence, which can effectively improve the connection strength between the cage structure and the concrete and improve the anti-seismic performance of the concrete column.
[0026] Further, the surfaces of the cage structure and the reinforcing structure are coated with a waterproof coating.
[0027] Coating a waterproof layer on the outer surface can isolate the erosion of moisture and corrosive medium, and improve the long-term stability of the structure. The waterproof coating can be selected from epoxy resin.
[0028] Advantages of the present application
[0029] 1. The utility model discloses a composite reinforcing structure of bamboo -steel reinforcement cage, bamboo fiber concrete and multilayer bamboo fiber protective layer, which significantly improves the tensile property, compressive property and durability of the concrete column. Meanwhile, the bamboo reinforcement is used to replace part of the steel reinforcement and synthetic fiber, which is more green and environmental protection, and can effectively reduce the cost.
[0030] 2. The utility model discloses simple structure, easy manufacturing, and the cost is far lower than traditional reinforced concrete prefabricated column. The prefabricated part of the concrete column can shorten the construction period, realize rapid construction, greatly improve the building construction efficiency, and is suitable for various building structures, and has wide application value. DRAWINGS
[0031] Figure 1 It is a structural schematic view of the utility model;
[0032] Figure 2 It is a sectional view of the cage structure and the column shell of the utility model;
[0033] Figure 3 It is a schematic view of the reinforcing structure of the utility model;
[0034] DRAWINGS: 1 - column shell; 2 - concrete, 3 - protective layer, 4 - steel reinforcement, 5 - gap, 6 - bamboo reinforcement, 7 - reinforcing bar. DETAILED DESCRIPTION
[0035] Example 1
[0036] As shown in Figure 1 and Figure 2 , a concrete column includes a column shell 1, a cage structure is arranged in the column shell 1, the column shell 1 is filled with concrete 2, the concrete 2 fills the inside of the cage structure and wraps the cage structure, a protective layer 3 is arranged on the periphery of the column shell 1, the protective layer 3 is used to delay the oxidation and corrosion of the column shell 1, wherein the cage structure is staggered and woven by steel reinforcement 4 and bamboo reinforcement 6, bamboo fiber is arranged in the concrete 2, and the protective layer 3 and the outer surface of the column shell 1 are connected by an adhesive.
[0037] The steel bars 4 and the bamboo bars 6 are interlaced and woven inside the column shell 1 to form a space cage structure, and the concrete 2 is filled inside the column shell 1 to form a fixed connection between the concrete and the cage structure; the bamboo fiber concrete is arranged in the concrete 2, the bamboo fiber concrete is poured inside the column shell 1 provided with the cage structure of the steel bars 4 and the bamboo bars 6, and the concrete column with a composite reinforced structure is formed. A protective layer 3 is arranged outside the column shell 1, and the protective layer 3 is used for delaying oxidation and corrosion of the column shell 1. The column shell 1 is selected as a PVC pipe, and rock wool is coated outside the protective layer 3, and a glue adhesive is selected as a neoprene glue. The composite reinforced structure of the utility model significantly improves the tensile property, the compressive property and the durability of the concrete column, is more green and environmental protection, and can effectively reduce the cost.
[0038] The concrete column can be prefabricated, and the prefabricated parts are made according to unified standards and specifications, and synchronous on-site assembly processing is carried out, and full bolt assembly connection is realized in on-site assembly, so that structural problems caused by uneven welding quality can be effectively avoided.
[0039] Example 2
[0040] Based on example 1, as shown in Figure 1 and Figure 2 The steel bars 4 and the bamboo bars 6 are interlaced and woven inside the column shell 1 to form a space cage structure, and the concrete 2 is filled inside the column shell 1 to form a fixed connection between the concrete and the cage structure; the bamboo fiber concrete is arranged in the concrete 2, the bamboo fiber concrete is poured inside the column shell 1 provided with the cage structure of the steel bars 4 and the bamboo bars 6, and the concrete column with a composite reinforced structure is formed. A protective layer 3 is arranged outside the column shell 1, and the protective layer 3 is used for delaying oxidation and corrosion of the column shell 1. The column shell 1 is selected as a PVC pipe, and rock wool is coated outside the protective layer 3, and a glue adhesive is selected as a neoprene glue. The composite reinforced structure of the utility model significantly improves the tensile property, the compressive property and the durability of the concrete column, is more green and environmental protection, and can effectively reduce the cost.
[0041] The utility model discloses a steel bar 4 and bamboo reinforcement 6 are interlaced and woven according to certain interval, form cage structure, and use bamboo fiber to bind and fix at connecting point. Place cage structure in column shell 1, and set up gap 5 between cage structure outside and column shell 1 inner wall, make concrete 2 can fill the inside and outside of cage structure fully, reinforce the connection between column shell 1, cage structure, concrete 2, enhance the integrity in concrete column. To guarantee the interface bonding strength of bamboo fiber and concrete, guarantee that bamboo fiber does not give full play to the reinforcing effect in concrete, coat silane coupling agent on the surface of bamboo fiber, and make bamboo fiber and concrete 2 mix fully, make bamboo fiber disperse evenly in concrete 2 as far as possible. Coating neoprene on the outer surface of column shell 1, and spiral winding bamboo fiber, and make winding evenly distribute, and closely adhere to column shell 1, delay the oxidation and corrosion of column shell 1. Spiral winding 3 layers of bamboo fiber on the outside of column shell 1, and use neoprene to bond between each layer of bamboo fiber.
[0042] In the PVC pipe of diameter 50cm, length 1m, 10 steel bars 4 are arranged in annular array along the inner wall of PVC pipe, and 1 bamboo reinforcement 6 is used to fix 10 steel bars 4, and the fixing position of bamboo reinforcement 6 and each steel bar 4 is fixed by bamboo fiber, and 4 bamboo reinforcements 6 are sequentially arranged along the axial direction of steel bar 4 according to the method, to form a cage structure, and the diameter of the cage structure is 45cm. The length of bamboo fiber is 30mm, and the total amount of bamboo fiber accounts for 2% of the volume of concrete to prepare bamboo fiber concrete. The prepared bamboo fiber concrete is poured into the inside of the PVC pipe of the cage structure of steel bar 4-bamboo reinforcement 6 to form a composite reinforced concrete column. After the concrete column is formed, neoprene is coated on the outer wall of the PVC pipe, and 3 layers of bamboo fiber are spiral wound on the outside of the column shell 1, and neoprene is used to bond between each layer of bamboo fiber.
[0043] Example 3
[0044] Based on example 2, as shown in Figures 1-3 The cage structure is provided with a reinforcing structure, the reinforcing structure includes a plurality of reinforcing bars 7, the two ends of the reinforcing bar 7 are connected with non-adjacent steel bars 4 respectively, and the reinforcing bars 7 are intersected. The reinforcing structure is several and sequentially arranged along the axial direction of the cage structure, and the reinforcing bars 7 are fixed by binding with the steel bars 4. The surfaces of the cage structure and the reinforcing structure are coated with a waterproof coating.
[0045] In the cage structure, a reinforcing structure is arranged, the reinforcing structure is formed by interlaced arrangement of a plurality of reinforcing bars 7, two ends of each reinforcing bar 7 are connected to non-adjacent steel bars 4, and the connecting positions of the two ends of the reinforcing bar 7 and the steel bar 4 are bound by bamboo fibers, so that the steel bars 4 of the cage structure can be connected inside the cage structure through the reinforcing bars 7, a plurality of reinforcing structures are arranged along the axial direction of the cage structure, a composite structure is formed between the reinforcing structures, the steel bars 4 and the bamboo bars 6, and the overall performance of the cage structure is improved. A waterproof layer is coated on the inner and outer surfaces of the reinforcing structure and the cage structure, so as to slow down and isolate the erosion of water and corrosive media, and improve the long-term stability of the structure.
[0046] In a PVC pipe with a diameter of 50 cm and a length of 1 m, 10 steel bars 4 are arranged in a ring array along the inner wall of the PVC pipe, 1 bamboo bar 6 is used to fix the 10 steel bars 4, the fixing positions of the bamboo bar 6 and each steel bar 4 are fixed by bamboo fibers, 4 bamboo bars 6 are sequentially arranged along the axial direction of the steel bars 4 in this way, and a cage structure is formed, the diameter of the cage structure is 45 cm. Three reinforcing structures are sequentially arranged along the axial direction of the cage structure inside the cage structure, each reinforcing structure includes 5 bamboo bars 6, and the two ends of each bamboo bar 6 are fixed to non-adjacent steel bars 4 to form an interlaced arrangement. The length of the bamboo fibers is 20 mm, and the total amount of the bamboo fibers accounts for 3% of the volume of the concrete to prepare the bamboo fiber concrete. The prepared bamboo fiber concrete is poured into the PVC pipe inside the cage structure of the steel bars 4-bamboo bars 6 to form a composite reinforced concrete column. After the concrete column is formed, PVC pipe is coated with neoprene glue, and 3 layers of bamboo fibers are spirally wound outside the column shell 1, and the bamboo fibers between each layer are bonded by neoprene glue.
[0047] Other bonding materials are used to replace neoprene glue for connecting the plates; light metal pipes are used to replace PVC pipes; thick bamboo bars 6 are used to replace steel bars 4; steel bars 4 are used to replace bamboo bars 6; ordinary concrete is used to replace bamboo fiber concrete; stainless steel wires or other materials are used to replace bamboo fibers for binding the steel bars 4-bamboo bars 6 and the steel bars 4-reinforcing bars 7, all of which belong to the alternative schemes of the utility model and belong to the protection scope of the utility model.
Claims
1. A bamboo fiber tube concrete column, characterized by, The application relates to a column shell (1) provided with a cage structure, filled with concrete (2) which fills the cage structure and wraps the cage structure, and provided with a protective layer (3) on the outer periphery of the column shell (1) for delaying oxidation and corrosion of the column shell (1), Wherein, the cage structure is interlaced by steel bars (4) and bamboo bars (6), the concrete (2) is provided with bamboo fibers, and the protective layer (3) is connected with the outer surface of the column shell (1) through an adhesive.
2. The bamboo fiber tube concrete column according to claim 1, characterized in that, The steel bars (4) and the bamboo bars (6) are provided in multiple, the steel bars (4) are arranged along the axial direction of the column shell (1), the bamboo bars (6) are sequentially connected with the multiple steel bars (4) to form a ring structure, the ring structure is provided with a plurality of rings arranged along the axial direction of the steel bars (4), and the connecting points of the bamboo bars (6) and the steel bars (4) are fixed through binding.
3. The bamboo fiber tube concrete column according to claim 2, characterized in that, A gap (5) is arranged between the outer part of the cage structure and the inner wall of the column shell (1), and the gap (5) is filled with concrete.
4. The bamboo fiber tube concrete column according to claim 1, characterized in that, The bamboo fibers are dispersed in the concrete (2), and the surface of the bamboo fibers is coated with an interface reinforcing agent.
5. The bamboo fiber tube concrete column according to claim 1, characterized in that, The protective layer (3) is formed by continuously winding bamboo fibers along the outer surface of the column shell (1), the protective layer (3) is provided with multiple layers, and the adjacent two layers of protective layers (3) are connected through the adhesive.
6. The bamboo fiber tube concrete column according to claim 1, wherein, The cage structure is provided with a reinforcing structure, the reinforcing structure comprises multiple reinforcing bars (7), the two ends of the reinforcing bars (7) are respectively connected with non-adjacent steel bars (4), and the multiple reinforcing bars (7) are arranged in intersection.
7. The bamboo fiber tube concrete column according to claim 6, characterized in that, There are multiple reinforcing structures which are sequentially arranged along the axial direction of the cage structure, the reinforcing bars (7) and the steel bars (4) are fixed through binding.
8. The bamboo fiber tube concrete column according to claim 6, characterized in that, The surfaces of the cage structure and the reinforcing structure are coated with a waterproof coating.