Discuss how to strengthen the seismic capacity of buildings.

Seismic strengthening of buildings has always been an extremely important part in architectural design and construction, and it is also the embodiment of the builder's responsibility. So what should be done to strengthen the seismic capacity of buildings?

Characteristics and application of seismic structure

Seismic resistance of steel structure

Structural characteristics: steel has high strength, light weight, good uniformity, good strength and toughness, large deformation, and can bear dynamic load well.

Seismic application Generally, super-high-rise buildings (above 100 meters) or buildings with large spans usually adopt steel structures. Due to the relatively high cost of steel structure construction and the hidden dangers of steel corrosion and fire prevention, it has not been widely used at present.

Seismic performance of shear wall structure

Structural characteristics Shear wall is a structure that uses reinforced concrete wallboard to bear internal forces caused by various loads and can effectively control the horizontal force of the structure. This kind of structure which uses shear wall to bear vertical force and horizontal force is called shear wall structure.

Seismic applications are widely used in high-rise buildings (residential buildings with 10 floors and above or buildings with a height of more than 24m).

Seismic resistance of frame structure

Structural features The frame structure is a partition wall composed of load-bearing beams and columns poured by reinforced concrete, and then assembled with prefabricated lightweight boards such as hollow bricks or aerated concrete and ceramsite. The wall mainly plays the role of enclosure and isolation. Because the wall is not load-bearing, it can be made of various lightweight materials. Frame-shear wall structure is a combination of frame structure and shear wall structure, which absorbs their respective advantages, not only provides a large space for building layout, but also has good resistance. Houses with this structure have good seismic performance.

Seismic application frame structure is widely used in modern architectural design, and most buildings are frame structures.

Anti-seismic of brick-concrete structure

Structural features Brick-concrete structures are applied to floors, lintels, stairs and balconies. These fittings are combined with the bearing wall made of bricks, so they are called brick-concrete structures. Brick-concrete structure is mainly used in multi-storey houses (within 24m and below 10), and its seismic performance is relatively weak compared with the above three.

Seismic application Brick-concrete structures are generally used for multi-storey or short-span buildings. However, brick-concrete structure is rarely used in urban construction because of the fixed architectural pattern and unchangeable walls. In recent years, the application scope of frame structure and shear wall structure has become wider and wider.

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