Combing of important articles in code for seismic design of buildings:
I. add 3.1.3 to 3.1 classification and standard category of building seismic fortification, specify the specific contents of the special chapter of seismic fortification, and, in accordance with the requirements of Article 12 of the regulations on the administration of earthquake resistance of construction projects, provide for major construction projects located in high intensity fortification areas and key earthquake monitoring and defense areas, construction projects that may have serious secondary disasters during earthquakes, and construction projects whose use functions cannot be interrupted or need to be restored as soon as possible, A special chapter on seismic fortification shall be prepared as required. This provision is one of the technical supports for implementing the relevant requirements of the regulations.
II. According to the relevant provisions of general code for seismic resistance of building and municipal engineering (gb55 Xinjiang Goldwind Science And Technology Co.Ltd(002202) 1) and general code for concrete structures (gb550082021), the requirements for concrete strength grade of frame beam, column and node core area with seismic grade II are supplemented, and the lower limit of concrete strength grade of structural column, core column, ring beam and other components is increased.
III. based on the original structure and structural components, the reference objectives and design methods of seismic performance-based design of building components and accessories and building auxiliary electromechanical equipment under medium earthquake are added. It is clear that the seismic performance-based design is one of the alternative design means for the houses that need to be built in the seismic fault avoidance area and the buildings that need to meet the normal use requirements under the fortification earthquake.
Clearly implement the regulations, specify the architectural design that needs to meet the normal use requirements under the fortification earthquake, and incorporate the seismic performance design of building components and building auxiliary electromechanical equipment into the document on the basis of structural components. The seismic requirements of buildings are more strict, and the use of isolation may be easier to meet the design requirements.
