Performance Level Definition (5.1.3)
The earthquake ground motion level, building height and building usage class are entered by the user.
Performance target analysis settings wizard are determined automatically according to earthquake ground motion level and building height class.
ICONS
BYS = Building altitude class
DTS = Earthquake design class
DD-1 = Earthquake ground motion level
DD-2 with a probability of exceeding 2% (recurrence period 2475 years) in 50 years = earthquake ground with a probability of exceeding 10% in 50 years (recurrence period 475 years) motion level
DD-3 = earthquake ground motion level with 50% probability of exceedance in 50 years (recurrence period 72 years)
DD-4 = earthquake ground motion level with 68% probability of exceedance in 50 years (recurrence period 43 years)
I = Building importance coefficient
Performance targets to be taken as basis in Evaluation and Retrofitting of High-rise buildings and Existing Buildings within the scope of Evaluation and Design According to Shape Change (UGDT) are defined in Table 3.4 of TDBY .
In this case, according to Table 3.4 (a) , if the Earthquake Design Class is DTS = 1a or DTS = 2a and the building height class is BYS≥2, the DD-3 and DD-1 earthquake ground motions should be applied. Performance target for DD-3 earthquake should be Limited Damage (SH) and for DD-1 earthquake the performance target should be Controlled Damage (KH). In these buildings, for both DD-1 and DD-3 earthquakes, the ŞGDT approach should be applied.
According to Table 3.4 (b) , for all Seismic Design Classes of tall buildings (new to be built and existing) with BYS = 1, the SDDT approach should be applied. Buildings with DTS = 1,2,3,3a, 4,4a and BYS = 1 will be applied the ŞGDT approach so that the performance target under DD-1 earthquake ground motion is the pre-collapse (LO). Similarly, in buildings with DTS = 1a, 2a and BYS = 1 defined as Advanced performance targets, performance target under DD-1 earthquake ground motion is Controlled Damage (KH) and DD-3 under the effect of earthquake ground motion Performance target Limited Damage (SH) ŞGDT approach will be applied.
According to Table 3.4 (c) , the ŞGDT approach will be applied so that the performance target under DD-2 earthquake ground motion is Controlled Damage (KH) for existing buildings with DTS = 1,2,3,3a, 4,4a and BYS≥2. Similarly, in existing buildings with DTS = 1a, 2a and BYS≥2 defined as advanced performance targets, the performance target under the influence of DD-1 earthquake ground motion Controlled Damage (KH) and DD-3 under the effect of earthquake ground motion Performance target Limited Damage (SH ) ŞGDT approach will be applied.
Next Topic
Related Topics