When performing seismic reinforcement work in schools, there are multiple aspects to be mindful of to ensure a successful completion. School buildings are key targets for seismic reinforcement, and their safety is of utmost importance. Special emphasis needs to be placed on enhancing their seismic capacity.
Reinforcement technology for brick-and-concrete structures with seismic resistance:
1. Reinforcement mesh mortar and concrete mortar overlay reinforcement
Cement mortar and reinforced mesh mortar coatings are one of the more commonly used reinforcement methods for brick-and-concrete structures. This method involves applying a layer of cement mortar or reinforced mesh cement mortar of a certain thickness to one or both sides of the brick wall to enhance its seismic resistance.
2. Reinforced concrete panel wall reinforcement
Reinforced concrete panel wall reinforcement is another commonly used method for strengthening brick-concrete structures. This method involves casting or spraying a certain thickness of reinforced concrete wall on one or both sides of the reinforced brick wall to enhance the seismic bearing capacity of the original wall.
3. Add seismic wall reinforcement
Additional seismic wall reinforcement is applicable when the comprehensive seismic capacity of the building does not meet the assessment requirements, or when the spacing between seismic cross-walls exceeds the assessment requirements. The additional seismic walls can be masonry walls or reinforced concrete walls, and it is generally preferred to use seismic walls made of the same materials as the original structure.
4. Additional circular beam - Reinforced concrete column reinforcement
Circular beams and structural columns play a crucial role in enhancing the seismic resistance and preventing collapse of brick-and-concrete structures. Therefore, for brick-and-concrete buildings that have not been set up in accordance with seismic evaluation requirements, reinforcement can be achieved by adding external circular beams - reinforced concrete columns.
5. Steel wire mesh - Reinforced with polymer mortar coating
Steel wire mesh mesh - Reinforcement with polymer mortar surface is a method of strengthening walls by bonding steel wire mesh mesh as reinforcing material with polymer mortar.

Seismic reinforcement design should also take into account the following issues:
The seismic reinforcement design should ensure uniform distribution of structural stiffness and strength, avoiding the formation of new weak layers.
2. When designing seismic reinforcement, vertical load-bearing components should be continuous to ensure a clear force transmission path.
3. Increased seismic effects during reinforcement design due to changes in the structure's self-vibration characteristics after reinforcement.
4. When adding components or reinforcing existing ones for seismic reinforcement design, the potential for reducing the entire structure's torsional effect must be considered.
5. Reinforce seismic construction at vulnerable areas during seismic fortification design.
6. During seismic reinforcement design, ensure the structural load distribution is more rational, prevent brittle failure of components, and eliminate load-bearing conditions such as strong beams and weak columns, or strong components and weak joints that are unfavorable for seismic resistance.
7. During seismic reinforcement design, consider the influence of the construction site. For the specific conditions of the site, choose a structural system with a smaller ground motion response after reinforcement to avoid the increase in seismic action exceeding the improvement of the structural seismic capacity.
8. During seismic reinforcement design, the latest seismic technology is employed for reinforcement. The adoption of relatively mature new seismic reinforcement technologies can significantly enhance the overall seismic performance of the structure and increase its seismic capacity. It should be strongly advocated.

How to develop an earthquake-proof reinforcement plan for buildings:
1. Measures to reinforce lateral force components such as seismic bracing frames, seismic walls, and supports using energy dissipation or isolation techniques. This serves to enhance the overall seismic performance of the structure while also reducing the seismic response of stair components.
2. The one-way frame should be reinforced to become a two-way frame, thereby allowing for the addition of measures such as seismic walls and supports to resist lateral forces.
3. When the requirements for the single-span frame identification vary greatly, the spacing of the seismic walls should not exceed 24 meters. Additional seismic walls, wing walls, supports, and other lateral force components should be internally added. Alternatively, the single-span frame corresponding to the axis can be changed to a multi-span frame.
4. Insufficient building stiffness; in this case, there are two measures: one is to reinforce with additional reinforced concrete anti-seismic walls or wing walls, and the other is to strengthen with additional supports for the seismic bracing.
5. When the actual bending capacity of the frame beams and columns is insufficient, two measures are taken: one is to reinforce the frame columns by using encased steel, expanding the concrete cross-section, or bonding steel plates, etc.; the other is to determine the countermeasures based on the structural elastic-plastic analysis results under rare earthquakes.
6. When the reinforcement requirements for seismic support frame beam columns do not meet the standards, adopt外包 steel sections, enlarged concrete cross-sections, or bonding steel plates, carbon fiber mats, steel wire mesh, and polymer mortar. These three methods can be used.
7. If the frame column axis pressure ratio does not meet the standards, reinforcement by expanding the concrete cross-section is sufficient.
8. When the reinforcement requirements of the concrete masonry抗震 wall do not meet the standards, simply thicken the existing wall or add end columns and walls.
9. If the identification requirements of the stair components do not meet the standards, reinforcement can be achieved by using bonded steel plates, carbon fiber mats, steel wire mesh sheets, and polymer mortar.

How to reinforce a school for seismic stability:
1. Under the premise of ensuring safety and effectiveness, the seismic reinforcement project for school buildings should give priority to economic considerations as much as possible, and facilitate operational design. If, after optimizing the design, the estimated reinforcement cost is still over 70% of the new construction cost, it is advisable to dismantle and renovate.
2. The seismic reinforcement project for school buildings will not consider thermal insulation and energy-saving design at this stage. It should strive to retain the existing doors, windows, and exterior bricks.
3. Reinforcement designs should adhere to the principle of truthfulness and practicality, aiming to minimize or avoid reinforcement where conditions are met.
4. Reinforcement design and inspection units should conduct on-site investigations after the walls (mainly interior walls) have been scraped, and refine the reinforcement design based on the on-site conditions.
5. If the teaching building exceeds the current regulations for height and floor count, an earthquake resistance calculation should be performed to determine if the structure meets the seismic bearing capacity requirements, followed by seismic reinforcement design.
6. For old teaching buildings without construction design documents, review the seismic reinforcement design construction drawings based on the "Seismic Assessment Report."
7. A masonry-frame hybrid structure teaching building has been designed to meet the requirements of masonry and frame structures, for seismic reinforcement.
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