Construction method for precast concrete cornice wood of pseudo-classic architecture

Abstract

The invention discloses a pseudo-classic architecture prefabricated concrete cornice wood construction method, and particularly relates to the technical field of cornice wood construction, and the method comprises the steps of S1, mold manufacturing, S2, steel bar manufacturing and binding, S3, concrete pouring and maintenance, S4, cornice wood installation, and S5, modeling polishing and surface treatment. According to the invention, the material of the cornice wood is thoroughly replaced and is changed into a more durable concrete material, the surface is subjected to smooth painting treatment, and a traditional process is combined with a modern process, so that the service life of the cornice wood is prolonged while the attractiveness is ensured, and the use function is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of cantilever wood construction, and more specifically to a construction method of prefabricated concrete cantilever wood for antique buildings. Background Art

[0002] The eaves beam is the square wood that protrudes outside the wooden roof frame at both ends. It is used to support the structural elements of the protruding part of the roof. It plays an important role in architecture. It is not only widely used in ancient buildings, but also reflected in modern architectural design.

[0003] In antique buildings, eaves are usually constructed with ordinary wood. During long use, due to the characteristics of the material itself, the eaves may deform, crack, be eaten by insects, break, etc., requiring frequent maintenance and replacement. In addition, since it is a load-bearing part, construction is more difficult.

[0004] In view of this, the present invention provides a construction method for prefabricated concrete cantilever wood of antique building. Summary of the invention

[0005] In order to overcome the above defects of the prior art, the present invention provides a construction method of prefabricated concrete cantilever wood for antique buildings to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a construction method of prefabricated concrete eaves wood for antique buildings, which specifically comprises the following steps: S1. Mould making: steel plates are welded into several concrete moulds, and the inside of the moulds are finely polished to reduce surface quality defects of the finished product; S2. Rebar production and binding: produce and bind the steel bar skeleton according to the finished product size to ensure the stability of the steel bar structure; S3, concrete pouring and curing, pouring concrete into the mold, pouring through the reserved pouring port, removing the mold after the concrete is finally set, and placing the finished product on the pre-laid plastic film after demolding for daily curing to prevent surface damage; S4. Installation of the eaves beam: when the horse head wall is built, a pre-buried position for the eaves beam is reserved. The exterior wall is built with half bricks. A position for cast-in-place tie bands is reserved inside and steel bars are placed. The prefabricated concrete eaves beam is installed upside down, with 1 / 4 of the part exposed, connected to the reserved steel bars, and concrete tie bands are cast to fix it; S5. Shape polishing and surface treatment. After installation, the eaves wood is shaped and polished to make its lines smooth, and then surface treatment is performed to enhance its aesthetics and durability.

[0007] Preferably, in step S1, a hinge is added to the lower part of the concrete mold to facilitate opening the mold, an openable concrete pouring port is reserved in the middle of the mold, and a release agent is applied to the mold before use.

[0008] Preferably, in step S5, the surface treatment includes applying anti-cracking mortar, ensuring that there are no missed spots and bubbles, and performing appropriate maintenance.

[0009] Preferably, follow-up construction and observation are also included. After the installation of the cantilever wood is completed, blue brick masonry construction is carried out on the upper part of the cantilever wood. At the same time, daily observation of the cantilever wood is carried out. If deformation, cracking, deflection, etc. are found, the construction is stopped immediately and corresponding treatment is carried out.

[0010] Preferably, in step S3, the concrete is prepared by using silicate cement or high alumina cement as the base material of high-strength cement, adding fly ash, silica fume or slag powder as mineral admixtures, and adding a water reducer and a fiber material to mix, wherein the fiber material includes but is not limited to any one or more combinations of steel fiber, polypropylene fiber or carbon fiber.

[0011] Preferably, the anti-cracking mortar is prepared by dry-mixing cement, mineral admixtures and fiber reinforcement materials in a mixer to mix the various materials fully, and intermittently adding water and admixtures to continue stirring until the mortar is uniform and free of lumps, and reaches a predetermined consistency.

[0012] Preferably, the cement is any one of silicate cement or sulphoaluminate cement, the mineral admixture is any one or more of fly ash, silica fume and slag powder, the fiber reinforcement material is any one or more of polypropylene fiber, glass fiber or basalt fiber, and the admixture specifically includes a water reducer, an anti-cracking agent and a water retaining agent.

[0013] Preferably, the coating agent is made of mineral oil or vegetable oil as a base material, emulsifiers and dispersants are added as auxiliary agents, additives with anti-rust and anti-corrosion functions are introduced, and finally a thickener or leveling agent is added and mixed at high speed.

[0014] Technical effects and advantages of the present invention: 1. The present invention completely replaces the material of the cantilever wood with a more durable concrete material, and applies a smooth coating on the surface, combining traditional technology with modern technology, thereby increasing its service life and ensuring its functionality while ensuring its beauty. 2. The present invention not only improves the construction efficiency through a specific formula preparation process and a special construction method, but also can improve the aesthetics and durability of the final product, thereby ensuring the service life of the precast concrete cantilever wood of antique buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall flow chart of the present invention.

[0016] Figure 2 It is a schematic diagram of the concrete mold structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the pouring port structure of the concrete mold of the present invention.

[0018] Figure 4 The finished product state of the present invention Figure 1 .

[0019] Figure 5 The finished product state of the present invention Figure 2 .

[0020] Figure 6 The finished product state of the present invention Figure 3 . DETAILED DESCRIPTION

[0021] Embodiment 1, The present invention provides a construction method for prefabricated concrete cantilever wood of antique buildings, which specifically comprises the following steps: S1. Mould making: steel plates are welded into several concrete moulds, and the inside of the moulds are finely polished to reduce surface quality defects of the finished product; This step uses steel plates to weld several concrete molds to accurately control the pouring shape and size of the concrete, ensuring that the final product is of accurate size and meets design requirements, facilitating subsequent construction operations. In addition, fine grinding of the inside of the mold can reduce the friction and adhesion of concrete to the inner wall of the mold during the pouring process, thereby effectively avoiding quality defects such as roughness, bubbles, and pits on the surface of the finished product, thereby improving the appearance quality of the finished product.

[0022] S2. Rebar production and binding: produce and bind the steel bar skeleton according to the finished product size to ensure the stability of the steel bar structure; This step can effectively bear and disperse the stress from the weight of the eaves wood itself and external loads, and significantly improve the overall structural strength of the eaves wood.

[0023] S3, concrete pouring and curing, pouring concrete into the mold, pouring through the reserved pouring port, removing the mold after the concrete is finally set, and placing the finished product on the pre-laid plastic film after demolding for daily curing to prevent surface damage; This step involves pouring concrete into a finely crafted mold and pouring it through a reserved pouring port, which ensures that the concrete can evenly fill every corner of the mold to form a complete structural shape. Placing the finished product on a pre-laid plastic film can effectively prevent surface scratches or damage that may be caused by direct contact with the ground.

[0024] S4. Installation of the eaves beam: when the horse head wall is built, a pre-buried position for the eaves beam is reserved. The exterior wall is built with half bricks. A position for cast-in-place tie bands is reserved inside and steel bars are placed. The prefabricated concrete eaves beam is installed upside down, with 1 / 4 of the part exposed, connected to the reserved steel bars, and concrete tie bands are cast to fix it; This step provides a stable installation foundation for the cantilever wood by reserving the embedded position of the cantilever wood when building the horse head wall, using half-bricks to build the exterior wall and reserving the position of cast-in-place tie strips inside. The prefabricated concrete cantilever wood is installed upside down, and the exposed 1 / 4 part is connected to the reserved steel bar, and then fixed by pouring concrete tie strips. This series of operations greatly enhances the connection strength between the cantilever wood and the wall, ensuring the stability of the entire structure. During the installation process, there are strict requirements and controls on the embedded position, installation angle, exposed length, etc. of the cantilever wood, which helps to ensure the accuracy of the cantilever wood installation, make it consistent with the overall architectural style, and meet the requirements of load-bearing and use functions. The use of prefabricated concrete cantilever wood for installation greatly simplifies the construction process, reduces the time of on-site processing and production, and improves construction efficiency compared to traditional wooden cantilever wood construction. At the same time, since concrete cantilever wood has better durability and stability, it also reduces the workload of later maintenance and replacement.

[0025] S5. Modeling and polishing and surface treatment. After installation, the eaves wood is modeled and polished to make its lines smooth, and then surface treated to enhance its aesthetics and durability. This step can eliminate the defects that may occur during the concrete pouring process through fine modeling and polishing, making the lines of the eaves more smooth and natural, in line with the aesthetic requirements of antique buildings. In addition, surface treatment such as applying anti-cracking mortar can further enhance the appearance texture of the eaves, making it more delicate and refined, and coordinating with the overall architectural style. Applying anti-cracking mortar can form a protective layer on the surface of the eaves to prevent erosion by external factors such as rain, wind and sand, thereby extending the service life of the eaves. At the same time, this also helps to prevent the eaves from cracking and falling off during use.

[0026] Embodiment 2, Based on Example 1, this embodiment further optimizes the construction method of prefabricated concrete eaves wood for antique buildings. Specifically, In step S1, a hinge is added to the lower part of the concrete mold to facilitate opening the mold, an openable concrete pouring port is reserved in the middle of the mold, and a release agent is applied to the mold before use; Among them, the coating agent is made of mineral oil or vegetable oil as the base material, with emulsifiers and dispersants added as auxiliary agents, and additives with anti-rust and anti-corrosion functions are introduced at the same time, and finally a thickener or leveling agent is added for high-speed mixing.

[0027] Specifically, in the mold making process of step S1 of this embodiment, a hinge structure is added at the lower part to facilitate the opening and closing of the mold, which not only improves the construction efficiency, but also facilitates the subsequent demoulding operation and reduces the risk of damage to the finished product during the demoulding process. An openable concrete pouring port is reserved in the middle of the mold. This design allows the concrete to be poured into the mold more evenly, reduces the generation of bubbles and voids, and improves the quality of the finished product. At the same time, before the mold is used, a layer of release agent is applied. The release agent is made of mineral oil or vegetable oil as a base material, and an emulsifier and a dispersant are added as additives to enhance its demoulding effect. At the same time, components with anti-rust and anti-corrosion functions are introduced into the release agent to protect the surface of the mold and the finished product and extend the service life.

[0028] Embodiment 3, Based on Example 1, this embodiment further optimizes the construction method of prefabricated concrete eaves wood for antique buildings. Specifically, In step S5, the surface treatment includes brushing the anti-cracking mortar to ensure that there is no missing brushing and no bubbles, and proper maintenance. The preparation method of the anti-cracking mortar is to dry-mix cement, mineral admixtures, and fiber reinforcement materials in a mixer to mix the various materials fully, and intermittently add water and admixtures to continue stirring until the mortar is uniform and has no lumps, and reaches a predetermined consistency. The cement is any one of silicate cement or sulphoaluminate cement; The mineral admixture is any one or more of fly ash, silica fume and slag powder; The fiber reinforcement material is any one or more of polypropylene fiber, glass fiber or basalt fiber; the admixture specifically includes a water reducing agent, an anti-cracking agent and a water retaining agent.

[0029] Specifically, the anti-cracking mortar used in the surface treatment in step S5 of this embodiment is applied with anti-cracking mortar, and a specific material ratio and mixing process are used in the preparation process to ensure the quality of the mortar, thereby improving the durability and crack resistance of the surface of the cantilever wood, which helps to extend the service life of the cantilever wood and reduce the frequency of maintenance and replacement due to surface cracking. At the same time, in the preparation of the anti-cracking mortar, mineral admixtures such as silicate cement or sulphoaluminate cement, fly ash, silica ash, slag powder, and fiber-reinforced materials such as polypropylene fiber, glass fiber or basalt fiber are selected. The selection and optimization of the ratio of these materials help to improve the strength and crack resistance of the mortar and further enhance the overall performance of the cantilever wood.

[0030] Embodiment 4, Based on Example 1, this embodiment further optimizes the construction method of prefabricated concrete eaves wood for antique buildings. Specifically, It also includes subsequent construction and observation. After the installation of the eaves wood is completed, the blue brick masonry construction on the upper part of the eaves wood is carried out. At the same time, daily observation of the eaves wood is carried out. If deformation, cracking, deflection, etc. are found, the construction will be stopped immediately and corresponding treatment will be carried out.

[0031] Specifically, the purpose of this step is to ensure that the cantilever wood can operate stably after installation, avoiding deformation, cracking, deflection and other problems caused by improper construction or environmental factors. Through the construction of blue bricks on the upper part of the cantilever wood, a more stable supporting structure is provided for the cantilever wood, increasing the overall stability and load-bearing capacity.

[0032] Embodiment 5, Based on Example 1, this embodiment further optimizes the construction method of prefabricated concrete eaves wood for antique buildings. Specifically, In step S3, the concrete is prepared by using silicate cement or high alumina cement as the base material of high-strength cement, adding fly ash, silica fume or slag powder as mineral admixtures, and adding a water reducer and a fiber material to mix, wherein the fiber material includes but is not limited to any one or more combinations of steel fiber, polypropylene fiber or carbon fiber.

[0033] Specifically, the present embodiment improves the preparation of concrete and improves the performance of concrete. First, silicate cement or high-alumina cement is used as the base material. These materials themselves have high strength and can effectively improve the mechanical properties of concrete such as compression and bending resistance. Moreover, the addition of mineral admixtures such as fly ash, silica fume or slag powder can improve the workability of concrete, improve the fluidity and pumpability of concrete, and make the concrete easier to operate and shape during the construction process. At the same time, the addition of mineral admixtures can also improve the concrete's impermeability, freeze-thaw cycle resistance and chemical erosion resistance, thereby extending the service life of concrete. By adding water reducers and fiber materials, the amount of water in concrete can be reduced and the water-cement ratio can be reduced. At the same time, the fiber material forms a mesh structure inside the concrete, which can effectively inhibit the generation and development of microcracks and improve the crack resistance of concrete. Finally, the addition of fiber materials such as steel fibers, polypropylene fibers or carbon fibers can significantly improve the tensile strength and toughness of concrete, making the concrete less likely to break when subjected to external forces.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The construction method of prefabricated concrete eaves wood for antique buildings is characterized by: The specific steps include: S1. Mould making: steel plates are welded into several concrete moulds, and the inside of the moulds are finely polished to reduce surface quality defects of the finished product; S2. Rebar production and binding: produce and bind the steel bar skeleton according to the finished product size to ensure the stability of the steel bar structure; S3, concrete pouring and curing, pouring concrete into the mold, pouring through the reserved pouring port, removing the mold after the concrete is finally set, and placing the finished product on the pre-laid plastic film after demolding for daily curing to prevent surface damage; S4. Installation of the eaves beam: when the horse head wall is built, a pre-buried position for the eaves beam is reserved. The exterior wall is built with half bricks. A position for cast-in-place tie bands is reserved inside and steel bars are placed. The prefabricated concrete eaves beam is installed upside down, with 1 / 4 of the part exposed, connected to the reserved steel bars, and concrete tie bands are cast to fix it; S5. Shape polishing and surface treatment. After installation, the eaves wood is shaped and polished to make its lines smooth, and then surface treatment is performed to enhance its aesthetics and durability.

2. The construction method of prefabricated concrete eaves wood for antique buildings according to claim 1 is characterized by: In step S1, a hinge is added to the lower part of the concrete mold to facilitate opening the mold, an openable concrete pouring port is reserved in the middle of the mold, and a release agent is applied to the mold before use.

3. The construction method of prefabricated concrete eaves wood for antique buildings according to claim 1 is characterized by: In step S5, surface treatment includes applying anti-cracking mortar, ensuring no missed spots or bubbles, and performing proper maintenance.

4. The construction method of prefabricated concrete eaves wood for antique buildings according to claim 1 is characterized by: It also includes subsequent construction and observation. After the installation of the eaves wood is completed, the blue brick masonry construction on the upper part of the eaves wood is carried out. At the same time, daily observation of the eaves wood is carried out. If deformation, cracking, deflection, etc. are found, the construction will be stopped immediately and corresponding treatment will be carried out.

5. The construction method of prefabricated concrete eaves wood for antique buildings according to claim 1 is characterized by: In step S3, the concrete is prepared by using silicate cement or high alumina cement as the base material of high-strength cement, adding fly ash, silica fume or slag powder as mineral admixtures, and adding a water reducer and a fiber material to mix, wherein the fiber material includes but is not limited to any one or more combinations of steel fiber, polypropylene fiber or carbon fiber.

6. The construction method of prefabricated concrete eaves wood for antique buildings according to claim 3 is characterized by: The preparation method of the anti-cracking mortar is to dry-mix cement, mineral admixtures and fiber reinforcement materials in a mixer to mix the various materials fully, and intermittently add water and admixtures to continue stirring until the mortar is uniform and free of lumps and reaches a predetermined consistency.

7. The construction method of prefabricated concrete eaves wood for antique buildings according to claim 6 is characterized by: The cement is any one of silicate cement or sulphoaluminate cement, the mineral admixture is any one or more of fly ash, silica fume and slag powder, the fiber reinforcement material is any one or more of polypropylene fiber, glass fiber or basalt fiber, and the admixture specifically includes a water reducing agent, an anti-cracking agent and a water retaining agent.

8. The construction method of prefabricated concrete eaves wood for antique buildings according to claim 2 is characterized by: The coating agent is made of mineral oil or vegetable oil as a base material, emulsifiers and dispersants are added as auxiliary agents, additives with anti-rust and anti-corrosion functions are introduced, and finally a thickener or a leveling agent is added and mixed at high speed.

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