Construction method for beam changing and replacing of brick wall in brick-concrete structure house

Abstract

The invention relates to the technical field of building construction, in particular to a construction method for replacing a brick wall with a beam in a brick-concrete structure house, which comprises the following steps: adopting a high-strength light composite material as a temporary support member, and realizing rapid and safe conversion of the brick wall with the beam through a modular support system and a sectional cutting technology. The prefabricated steel beams are used for replacing an original bearing function, and meanwhile construction is guided based on a stress balance optimization algorithm. The construction efficiency and safety can be remarkably improved, damage to an original structure is reduced, additional dismantling or repairing work is not needed after construction is completed, materials can be recycled, and the method has economical efficiency, environmental protection performance and wide applicability.

Description

Technical Field

[0001] The invention belongs to the technical field of construction engineering, and in particular relates to a construction method for replacing brick walls with beams in a brick-concrete structure house. Background Art

[0002] In the field of building structural engineering, brick-concrete structures have been widely used in urban and rural construction in my country due to their ease of construction and low cost. However, as brick-concrete structures age and functional requirements change, the brick walls in these structures often require renovation or reinforcement to meet new load-bearing requirements or spatial layout needs. Traditional brick wall renovation methods typically involve partial demolition and reconstruction. This method is not only labor-intensive and time-consuming, but also potentially damages the integrity of the original structure, posing safety risks.

[0003] Furthermore, existing research on brick wall-to-beam replacement construction methods is limited. Safely replacing brick walls without damaging the overall building structure presents numerous technical challenges, including ensuring the stability of temporary support structures during construction, minimizing impacts on surrounding walls and floors, and efficiently installing and connecting new beams. These challenges limit the practical application of brick wall-to-beam replacement construction, making it difficult to meet the comprehensive safety, cost-effectiveness, and efficiency requirements of modern building renovation projects.

[0004] Therefore, there is an urgent need for a brick wall to beam replacement construction method that can effectively solve the above problems, so as to improve the safety and reliability of construction, shorten the construction period and reduce the renovation cost, and provide more scientific technical support for the renovation of brick-concrete structure houses. Summary of the Invention

[0005] The present invention belongs to the field of building construction technology, and specifically relates to a construction method for replacing brick walls with beams in brick-concrete structure houses. This construction method uses a high-strength, lightweight composite material as a temporary support member to achieve rapid and safe structural conversion during the brick wall-to-beam replacement process, while ensuring overall stability and safety during the construction process. Compared with traditional brick wall-to-beam replacement construction methods, the present invention significantly improves construction efficiency, reduces the degree of damage to the original structure, and does not require additional demolition or repair work after construction is completed. It is highly economical and environmentally friendly, and has broad application prospects in the field of building renovation.

[0006] The brick wall-to-beam replacement construction method provided by the present invention involves first pre-placing a high-strength, lightweight composite material (preferably modular support panels) on both sides of the wall to be replaced and securing it with bolts to form a temporary support system. The brick wall to be replaced is then dismantled layer by layer using a segmented cutting technique, while prefabricated steel beams are installed in its place to replace the original load-bearing function. Finally, a construction control method based on a stress balance optimization algorithm is used to connect and reinforce the steel beams to the surrounding walls. Compared to currently common brick wall-to-beam replacement construction methods, this method significantly improves construction safety and efficiency by introducing a modular support system and prefabricated steel beams.

[0007] Compared with the traditional wooden formwork or steel pipe scaffolding support system used in the current common brick wall to beam construction method, the present invention greatly improves the fit and stability between the temporary support components and the wall, which can effectively reduce the vibration and displacement risks during the construction process and reduce the impact on the surrounding structures. At the same time, the segmented cutting technology and prefabricated steel beams used in the present invention can greatly shorten the construction period and improve the overall construction quality. The construction method of the present invention can be applied to the renovation projects of various existing brick-concrete structure houses, and the size of the support components and the specifications of the steel beams can be adjusted according to actual needs to meet the requirements of different construction scenes.

[0008] The brick wall beam replacement construction method of the present invention also proposes a calculation formula based on stress balance optimization to guide the layout of the support system and the installation of steel beams during the construction process. The formula is as follows: σmax=F / A+M⋅c / I Where σmax represents the maximum stress, F is the total load acting on the support member, A is the cross-sectional area of ​​the support member, M is the bending moment, c is the maximum distance between the steel beam sections, and I is the moment of inertia of the steel beam. By calculating this formula, the spacing between support members and the installation position of steel beams can be accurately determined, ensuring uniform stress distribution during construction and avoiding structural instability caused by localized stress concentration.

[0009] The brick wall-to-beam replacement construction method of the present invention utilizes recyclable, high-strength building materials. After completion, no additional separation or processing is required; the materials can be directly disassembled and reused, significantly reducing construction costs and resource waste. Furthermore, the construction method of the present invention is simple and easy to implement, convenient to operate, and applicable to renovation projects for various brick-concrete structures, possessing significant practical value and promotional significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall process of the brick wall beam replacement construction method of the present invention.

[0011] Figure 2Schematic diagram of the structure of a high-strength lightweight composite modular support plate.

[0012] Figure 3 Schematic diagram of the process of demolishing a brick wall using segmented cutting technology.

[0013] Figure 4 This is a schematic diagram of the installation position of prefabricated steel beams and their connection and reinforcement with the wall.

[0014] Figure 5 This is a schematic diagram of the support system layout and steel beam installation calculation formula based on the stress balance optimization algorithm.

[0015] Figure 6 Schematic diagram of the disassembly and reuse of modular support panels after construction is completed.

[0016] Reference numerals: 1. High-strength lightweight composite modular support plate; 2. Prefabricated steel beams. DETAILED DESCRIPTION

[0017] The present invention provides a construction method for replacing brick walls with beams in brick-concrete structure houses. The core of the method is to achieve efficient, safe and environmentally friendly brick wall replacement construction by combining high-strength lightweight composite modular support plates, segmented cutting technology and prefabricated steel beams. Figure 1 To the attached Figure 6 The specific implementation of this construction method is described in detail.

[0018] First, during the construction preparation stage, it is necessary to select appropriate high-strength lightweight composite modular support panels (such as Figure 2 (As shown). The support plates are made of high-strength fiber-reinforced composite materials, characterized by their light weight, high strength, and excellent durability. They can be fixed with bolts to form a temporary support system. In actual operation, construction personnel must first measure the height, width, and thickness of the wall to be renovated and calculate the spacing of the support plates based on the load distribution of the wall. The spacing of the support plates is accurately calculated using the stress balance optimization formula as follows: σmax=F / A+M⋅c / I Where σmax represents the maximum stress borne by the support member, F is the total load acting on the support member, A is the cross-sectional area of ​​the support member, M is the bending moment, c is the maximum distance between the steel beam sections, and I is the moment of inertia of the steel beam. By applying this formula, we can ensure that the spacing of the support members is properly distributed, avoiding localized stress concentration and structural instability. For example, when the wall to be renovated is 3 meters high and the load is 5 kilonewtons per square meter, calculations show that the optimal spacing of the support plates is 80 centimeters to ensure overall stability during construction.

[0019] After the selection and arrangement of the support plates are completed, the brick wall demolition phase begins. Figure 3 As shown, the brick wall to be renovated is dismantled layer by layer using segmented cutting technology. The core of the segmented cutting technology is to use small electric cutting equipment to divide the brick wall into small pieces layer by layer starting from the top, with the cutting thickness of each layer controlled between 10 and 15 cm. This gradual demolition method can effectively reduce the impact of vibration and displacement on surrounding structures during construction, while facilitating the timely cleanup of demolished bricks and avoiding the accumulation of excessive waste materials on the construction site. During the demolition process, construction workers need to check the status of the temporary support system at any time to ensure that the fit and stability between the support plate and the wall are always good. In addition, to further reduce construction risks, operations can be suspended after each layer of brick wall is demolished, and stress detection equipment can be used to monitor the support system in real time to ensure that the maximum stress value is always below the allowable stress range of the material.

[0020] As the brick walls are demolished layer by layer, the installation of prefabricated steel beams is carried out simultaneously. Figure 4 As shown, the specifications and length of the prefabricated steel beams must be customized based on the load-bearing requirements of the original brick wall and the connection requirements on both sides of the wall. In actual construction, H-shaped steel or I-shaped steel beams are typically made of Q345B high-strength steel, which has excellent bending resistance and load-bearing capacity. The installation position of the steel beams must be strictly calculated according to the stress balance optimization formula to ensure that the connection points between the steel beam and the wall are evenly distributed and meet the load requirements. During installation, one end of the steel beam is first fixed into the reserved groove on one side of the wall, and the other end is then tightly connected to the connection fitting on the other side of the wall with bolts. To improve the connection strength between the steel beam and the wall, high-strength structural adhesive can be applied to the joints, and steel plate gaskets can be added at the contact point between the steel beam and the wall to distribute the load and prevent localized stress concentration.

[0021] After the steel beams are installed, the final reinforcement stage begins. Figure 5 As shown in the figure, a construction control method based on a stress balance optimization algorithm is applied to the connection and reinforcement process of steel beams and surrounding walls. Construction workers need to adjust the installation angle and position of the steel beam according to the actual situation on site to ensure that the connection point with the wall is evenly stressed. At the same time, stress detection instruments are used to monitor the steel beam and support system in real time to ensure that the stress distribution during construction is uniform and does not exceed the allowable stress range of the material. For example, in an actual construction case, when the steel beam is 4 meters long and bears a load of 8 kilonewtons, the maximum stress value of the steel beam calculated by the formula is 150 MPa, which is far lower than the yield strength of the material, thus proving the safety and reliability of the installation plan.

[0022] After the construction is completed, if Figure 6As shown, the modular support panels can be directly disassembled and reused. Because they are made of high-strength, lightweight composite materials with a smooth, non-destructive surface, they require no additional separation during disassembly and can be easily removed by simply loosening the bolts. The disassembled support panels can be directly reused in other similar projects, significantly reducing construction costs and resource waste. Furthermore, the prefabricated steel beams and high-strength structural adhesive used in this construction method are all recyclable and environmentally friendly materials, in line with the development of green building concepts.

[0023] In summary, the brick wall to beam replacement construction method provided by the present invention realizes fast, safe and efficient brick wall to beam replacement construction through the organic combination of high-strength lightweight composite modular support plates, segmented cutting technology and prefabricated steel beams. In actual application, this method not only significantly improves the construction efficiency, but also greatly reduces the degree of damage to the original structure, while having high economy and environmental protection. For example, in a certain brick-concrete structure house renovation project, the brick wall to beam replacement work that originally took 10 days to complete was completed in only 5 days using this construction method, and no safety accidents occurred during the construction process, which fully verified the practical value and promotion significance of the present invention.

Claims

1. A construction method for replacing brick walls with beams in a brick-concrete structure house, characterized in that: The following steps are involved: Pre-placing high-strength lightweight composite modular support plates (1) on both sides of the wall to be renovated and fixing them with bolts to form a temporary support system; The brick wall to be renovated is dismantled layer by layer using segmented cutting technology; prefabricated steel beams (2) are installed at the original brick wall location to replace the original load-bearing function; and the connection and reinforcement of the steel beams with the surrounding walls are completed using a construction control method based on a stress balance optimization algorithm.

2. The brick wall beam replacement construction method according to claim 1 is characterized in that: The high-strength lightweight composite modular support plate (1) is made of high-strength fiber-reinforced composite material and has the characteristics of light weight and high strength. The arrangement spacing is determined by calculation according to the formula: σmax=F / A+M⋅c / I Where σmax represents the maximum stress value borne by the support member, F is the total load acting on the support member, A is the cross-sectional area of ​​the support member, M is the bending moment, c is the maximum distance of the steel beam section, and I is the moment of inertia of the steel beam.

3. The brick wall to beam replacement construction method according to claim 1, characterized in that: The segmented cutting technology uses small electric cutting equipment to divide the brick wall into small pieces layer by layer starting from the top, and the cutting thickness of each layer is controlled between 10 and 15 centimeters.

4. The brick wall to beam replacement construction method according to claim 1, characterized in that: The prefabricated steel beam (2) is made of H-shaped steel or I-shaped steel, and is made of Q345B high-strength steel. The specifications and length of the steel beam are customized according to the load-bearing requirements of the original brick wall and the connection conditions on both sides of the wall.

5. The brick wall to beam replacement construction method according to claim 1, characterized in that: One end of the prefabricated steel beam (2) is fixed in a reserved groove on one side of the wall, and the other end is tightly connected to the connecting piece on the other side of the wall by bolts. High-strength structural adhesive is applied to the connection and a steel plate gasket is added to disperse the load.

6. The brick wall to beam replacement construction method according to claim 1, characterized in that: The construction control method based on the stress balance optimization algorithm is applied in the process of connecting and reinforcing the steel beams and the surrounding walls, and the steel beams and the support system are monitored in real time by stress detection instruments.

7. The brick wall beam replacement construction method according to claim 1 is characterized in that: The high-strength lightweight composite modular support plate (1) can be directly disassembled and reused after construction is completed without the need for additional separation processing.

8. The brick wall to beam replacement construction method according to claim 1, characterized in that: The high-strength lightweight composite modular support plate (1) has a smooth surface and is not easily damaged, and can be directly used in other similar projects after being disassembled.

9. The brick wall to beam replacement construction method according to claim 1, characterized in that: The prefabricated steel beam (2) and the high-strength structural adhesive are both recyclable and environmentally friendly materials.

10. The brick wall to beam replacement construction method according to claim 1, characterized in that: The construction method is applicable to the renovation projects of various existing brick-concrete structure houses, and the size of the supporting components and the specifications of the steel beams can be adjusted according to actual needs to meet the requirements of different construction scenarios.

Images