A building formwork for concrete construction

Abstract

The utility model relates to building template technical field, proposes a kind of building template for concrete building, gradient vibration-suppression hole structure is constructed inside the core layer of damping layer, wherein relatively dense structure, to enhance the reflection and scattering effect of high-frequency vibration, wherein loose structure is conducive to absorption and dissipation low-frequency vibration energy, by controlling the gradient change of pore, realize the efficient suppression of different frequency vibration, set up spiral special-shaped hole in the damping layer, compared with traditional circular hole, can increase the path length and reflection times of vibration wave inside the propagation of damping material, when vibration wave propagates along spiral hole, will constantly occur reflection and refraction, thereby more vibration energy is converted into heat energy and other forms of energy and dissipates, simultaneously the existence of special-shaped hole can also enhance the interaction of damping material and air, further improve damping effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to building template technical field, concretely is a building template for concrete building. BACKGROUND

[0002] The concrete building template is a kind of support structure used when pouring concrete, is used to temporarily support and position concrete, makes it keep the shape and size required, is an important component in building construction, is used to form the mold of concrete structure, provides temporary support structure, so that concrete can keep the shape and position required when pouring and solidifying, can bear the weight of concrete and horizontal and vertical pressure when pouring, prevent concrete from contacting with external environment, and provide a layer of protection, which helps to keep the humidity and temperature of concrete, promotes the normal solidification and hardening process of concrete, common concrete building template materials include steel plate, wood board and plywood etc.

[0003] In the concrete pouring and vibrating process, the vibration generated by vibrating equipment can be transmitted to the template. The special-shaped curved surface template has a specific natural vibration frequency due to its unique structure and material composition. If the vibrating frequency is close to the natural frequency of the template, resonance may occur. When using a high-frequency vibrating rod to vibrate at a certain position, the template will vibrate violently locally and cannot attenuate itself. Resonance can cause the template to deform intensively, resulting in quality problems such as delamination and segregation during the concrete molding process, and even may cause damage to the template, endangering the safety of construction personnel, therefore a building template for concrete building is proposed to solve the above problems. SUMMARY

[0004] Technical problem

[0005] In view of the deficiencies in the prior art, the utility model provides a building template for concrete building to solve the problem that the resonance of the special-shaped curved surface template can cause the template to deform intensively, resulting in quality problems such as delamination and segregation in the concrete molding process, and even may cause damage to the template, endangering the safety of the construction personnel.

[0006] Technical scheme

[0007] To achieve the above solving purposes, the utility model provides the following technical scheme: a building template for concrete building, including protective layer, aluminum alloy framework, damping layer and template are sequentially arranged in the inner side of protective layer, the joint connection place in aluminum alloy framework is equipped with joint reinforcing plate, reinforcing rib is fixedly installed between the framework of aluminum alloy framework, the damping layer adopts sandwich type composite damping material structure, the middle layer of damping layer is core layer, gradient structure's vibration suppression hole is constructed in the inside of the core layer of damping layer.

[0008] Furthermore, the joint reinforcement plate is made of rubber material, the joint reinforcement plate is circular, the reinforcing rib is "X" shaped, and the reinforcing rib is located between the edge of the joint reinforcement plate and the aluminum alloy skeleton.

[0009] Furthermore, the outer layer of the damping layer is made of polyurethane rubber with high hardness and wear resistance, with a thickness of 1-2 mm.

[0010] Furthermore, the core layer of the damping layer uses a blend of butyl rubber and acrylate rubber with high damping properties, and has a thickness of 3 to 5 mm.

[0011] Furthermore, the inner layer of the damping layer is made of silicone rubber with good adhesion and flexibility, and has a thickness of 0.5 to 1 mm.

[0012] Furthermore, nanoscale graphite powder and short carbon fiber strands are uniformly dispersed in the butyl rubber and acrylate rubber blend of the core layer of the damping layer.

[0013] Furthermore, the amount of graphite powder added is 5% to 10% of the total mass of the rubber, and the length of the short carbon fiber is 0.5 to 1 mm, with an addition amount of 3% to 6% of the total mass of the rubber.

[0014] Furthermore, the porosity of the vibration damping holes near the outer polyurethane rubber layer is 10% to 20% of the protective layer, while the porosity of the vibration damping holes near the inner silicone rubber layer gradually increases to 30% to 40%.

[0015] Furthermore, the size of the vibration damping holes gradually increases from the outer layer to the inner layer, with the outer layer pore diameter being 0.1–0.5 mm and the inner layer pore diameter being 1–2 mm.

[0016] Furthermore, the damping layer is provided with spiral-shaped irregular channels, the pitch of which is 2 to 5 mm and the diameter is 0.3 to 0.8 mm.

[0017] Beneficial effects

[0018] Compared with the prior art, this utility model provides a construction formwork for concrete construction, which has the following beneficial effects:

[0019] 1. The uniform dispersion of nanoscale graphite powder and short carbon fiber in the butyl rubber and acrylate rubber blend in the core layer of the damping layer can significantly enhance the strength and stiffness of the damping material and improve its ability to resist high amplitude vibrations. At the same time, the high thermal conductivity of carbon fiber also helps to dissipate heat.

[0020] 2. Setting spiral-shaped irregular channels in the damping layer can increase the path length and number of reflections of vibration waves inside the damping material compared to traditional circular channels. When vibration waves propagate along the spiral channels, they will be continuously reflected and refracted, thereby converting more vibration energy into heat energy and other forms of energy and dissipating it. At the same time, the presence of irregular channels can also enhance the interaction between the damping material and the air, further improving the damping effect.

[0021] 3. A gradient vibration suppression hole structure is constructed inside the core layer of the damping layer. The relatively dense structure enhances the reflection and scattering of high-frequency vibrations, while the loose structure is conducive to absorbing and dissipating low-frequency vibration energy. By controlling the gradient change of the pores, efficient suppression of vibrations of different frequencies can be achieved. Attached Figure Description

[0022] Fig. 1 This is a schematic diagram of the main structure of the present utility model;

[0023] Fig. 2 This is a schematic diagram of the cross-sectional structure of the main body of this utility model;

[0024] Fig. 3 This is a schematic diagram of the aluminum alloy frame structure of this utility model;

[0025] Fig. 4 This is a schematic diagram of the damping layer structure of this utility model.

[0026] The attached figures are labeled as follows:

[0027] 10. Protective layer; 11. Aluminum alloy frame; 12. Damping layer; 13. Template; 14. Reinforcing rib; 15. Joint reinforcement plate; 16. Vibration damping hole. Detailed Implementation

[0028] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0029] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

[0033] Please see Figs. 1-4 This utility model proposes a construction formwork for concrete buildings. During use, concrete is poured into the formwork 13, and vibrations generated by a vibrating device are transmitted to the formwork 13 for compaction. During this process, due to the irregular curved surface of the formwork 13 and its unique structure and material composition, it has a specific inherent vibration frequency. If the vibration frequency is close to the inherent frequency of the formwork 13, resonance may occur. The formwork 13 adopts a multi-layer composite FRP structure, consisting of two high-strength, high-weather-resistant FRP surface layers, with a lightweight honeycomb FRP core material in between, which has good thermal insulation properties. This not only further improves the overall strength and rigidity of the formwork 13, effectively resisting the lateral pressure and impact force during concrete pouring, but also reduces heat loss during concrete pouring to a certain extent, which is beneficial to the hydration reaction and strength development of the concrete. At the same time, the presence of the honeycomb core material reduces the self-weight of the formwork 13, facilitating construction operations and transportation.

[0034] An aluminum alloy frame 11 is provided on the outer side of the template 13, and a damping layer 12 is provided between the template 13 and the aluminum alloy frame 11. The damping layer 12 adopts a sandwich-type damping material composite structure. The outer layer of the damping layer 12 is made of polyurethane rubber with high hardness and wear resistance, with a thickness of 1-2 mm. It is mainly used to protect the inner damping layer 12 and provide certain structural support. The middle layer of the damping layer 12 is the core layer, which uses a blend of butyl rubber and acrylic rubber with high damping characteristics, with a thickness of 3-5 mm. It can maintain good damping performance over a wider temperature range and effectively dissipate vibration energy. The inner layer of the damping layer 12 is made of silicone rubber with good adhesion and flexibility, with a thickness of 0.5-1 mm, to ensure that the damping layer 12 can be tightly and firmly bonded to the aluminum alloy frame 11 and the template 13.

[0035] Nanoscale graphite powder and chopped carbon fiber are uniformly dispersed in the butyl rubber and acrylate rubber blend of the core layer of damping layer 12. The amount of graphite powder added is 5% to 10% of the total mass of the rubber. Its sheet-like structure can form a conductive network in the rubber matrix, improve the thermal conductivity of the damping material, facilitate the rapid dissipation of heat generated by damping, and prevent the performance of the damping material from deteriorating due to excessive temperature. The length of the chopped carbon fiber is 0.5 to 1 mm, and the amount added is 3% to 6% of the total mass of the rubber. It can significantly enhance the strength and stiffness of the damping material, improve its ability to resist high-amplitude vibrations, and the high thermal conductivity of carbon fiber also helps dissipate heat.

[0036] A gradient vibration damping hole 16 structure is constructed inside the core layer of the damping layer 12 using a foaming process. In the region near the outer polyurethane rubber layer, the porosity is 10% to 20%, forming a relatively dense structure to enhance the reflection and scattering of high-frequency vibrations. In the region near the inner silicone rubber layer, the porosity gradually increases to 30% to 40%. This loose structure is conducive to absorbing and dissipating low-frequency vibration energy. The size of the vibration damping hole 16 gradually increases from the outer layer to the inner layer. The diameter of the pores in the outer layer is about 0.1 to 0.5 mm, and the diameter of the pores in the inner layer can reach 1 to 2 mm. By controlling the gradient change of the pores, efficient suppression of vibrations of different frequencies can be achieved.

[0037] Spiral-shaped channels are incorporated into the damping layer 12. Compared to traditional circular channels, this increases the path length and number of reflections of vibration waves propagating within the damping material. The pitch of the spiral channels is 2–5 mm, and the diameter is 0.3–0.8 mm. As vibration waves propagate along these channels, they undergo continuous reflection and refraction, thus converting more vibrational energy into heat and other forms of energy for dissipation. Furthermore, the presence of these irregularly shaped channels enhances the interaction between the damping material and the air, further improving the damping effect.

[0038] A joint reinforcement plate 15 is provided at the joint connection in the aluminum alloy frame 11. The joint reinforcement plate 15 is made of rubber material and is circular. The joint reinforcement plate 15 can provide buffer at the connection joint of the aluminum alloy frame 11 during vibration, improve the structural strength of the aluminum alloy frame 11, and at the same time provide buffer between the aluminum alloy frame 11 and the damping layer 12, thereby playing a certain protective role for the damping layer 12. A reinforcing rib 14 is fixedly installed between the upper and lower frames of the aluminum alloy frame 11. The reinforcing rib 14 is "X" shaped. The reinforcing rib 14 helps to enhance the overall stiffness of the aluminum alloy frame 11 and reduce the risk of resonance.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A formwork for concrete construction, comprising a protective layer (10), characterized in that: The inner side of the protective layer (10) is provided with an aluminum alloy frame (11), a damping layer (12) and a template (13) in sequence. The node connection of the aluminum alloy frame (11) is provided with a node reinforcement plate (15). The frame of the aluminum alloy frame (11) is fixedly installed with a reinforcing rib (14). The damping layer (12) adopts a sandwich-type composite damping material structure. The middle layer of the damping layer (12) is the core layer. The core layer of the damping layer (12) has a gradient structure vibration damping hole (16) inside.

2. A formwork for concrete construction according to claim 1, characterized in that: The node reinforcement plate (15) is made of rubber material. The node reinforcement plate (15) is circular, and the reinforcing rib (14) is "X" shaped. The reinforcing rib (14) is located between the edge of the node reinforcement plate (15) and the aluminum alloy frame (11).

3. A formwork for concrete construction according to claim 1, characterized in that: The outer layer of the damping layer (12) is made of polyurethane rubber with high hardness and wear resistance, and the thickness is 1-2 mm.

4. A formwork for concrete construction according to claim 1, characterized in that: The inner layer of the damping layer (12) is made of silicone rubber with adhesiveness and flexibility, and has a thickness of 0.5 to 1 mm.

5. A formwork for concrete construction according to claim 1, characterized in that: The vibration damping hole (16) near the outer polyurethane rubber layer has a porosity of 10% to 20%, while the vibration damping hole (16) near the inner silicone rubber layer has a porosity that gradually increases to 30% to 40%.

6. A formwork for concrete construction according to claim 5, characterized in that: The size of the vibration damping hole (16) gradually increases from the outer layer to the inner layer, with the outer layer pore diameter being 0.1 to 0.5 mm and the inner layer pore diameter being 1 to 2 mm.

7. A formwork for concrete construction according to claim 1, characterized in that: The damping layer (12) is provided with a spiral-shaped channel with a pitch of 2 to 5 mm and a diameter of 0.3 to 0.8 mm.

8. A formwork for concrete construction according to claim 1, characterized in that: The core layer of the damping layer (12) is composed of a composite damping material containing uniformly dispersed nano-graphite powder and short-cut carbon fiber to realize the gradient damping hole (16) and the spiral irregular channel structure.

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