What is a Base Period?
Design reference period (design reference period), load statistical parameters used in structural design, time-dependent material performance values, you need to select a time parameter, which is the design reference period. The design reference period adopted in China is 50 years.
Design basis period
Right!
- Chinese name
- Design basis period
- Foreign name
- Design reference period
- Structural analysis
- Use reference time parameter
- Regulations
- Generally cannot be changed at will
- Design reference period (design reference period), load statistical parameters used in structural design, time-dependent material performance values, you need to select a time parameter, which is the design reference period. The design reference period adopted in China is 50 years.
Design basis period
- The load statistical parameters considered in the design of the building structure are determined based on the design base period of 50 years. If other design base periods are used in the design, the probability distribution and corresponding statistics of the maximum load must be separately determined in the base period. parameter.
Design Baseline Summary
- It can be seen that the design base period is a benchmark parameter, and its determination involves not only variable action (load), but also material properties. It is proposed based on the statistics of a large number of measured data. Generally, it cannot be changed arbitrarily. For example, the reference period for the design ground motion parameters (including the reflection spectrum and the maximum acceleration of the earthquake) adopted by China's code is 50 years. If the design ground motion parameters with a base period of 100 years are required, not only the probability distribution of the ground motion should be performed Specialized research, but also special statistical research on the performance parameters of building materials and equipment.
- For ordinary houses and structures, the general description of the design documents should specify that the design service life of the structure (including the foundation) is 50 years; monumental buildings and particularly important building structures should be 100 years. In the design document, the design reference period need not be given.