Earthquake Design Action Calculation

Design Category:

Step 1: 
The location of a structure and its corresponding hazard factor (often denoted by Z) are crucial in the design process. The hazard factor can vary depending on the city or region where the structure is located, as different locations have different environmental conditions and risks, such as earthquakes, wind speed, or flooding. 
          Input Z values by selecting the values from the table provided below: 
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﻿﻿Z
:0.08​
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Step 2:
Next, The annual probability of exceedance of ultimate limit state (ULS) loads and the probability factor (kp) as specified in Table 3.1 of AS1170.04 are critical aspects in the design of structures, particularly in areas susceptible to environmental hazards like earthquakes. In the Australian Standard AS1170.04 context, which deals with earthquake actions in structures, these factors help civil engineers calculate the level of safety and reliability that a given structure must meet.
            Input Kp Value by selecting the value from the attachment below:
﻿﻿Kp
:1.30​
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Annual Probability of Exceedance
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Step 3:
The Structural Performance Factor (sp) and the Structural Ductility Factor (μ) are crucial parameters used to assess and ensure the reliability and safety of a structure, particularly under extreme loading conditions like earthquakes.
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                                              Input SP/μ Value :
﻿﻿SP/u
:0.38​
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Step 4
The Spectral Shape Factor  Ch(T1), as shown in Table 6.4 of several seismic design standards, is a crucial variable in structural seismic design. It is utilised to alter the response spectrum based on the basic period of the structure ( 1 T1) and the soil type.
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                                        Input Ch(T1) Value below:
﻿﻿Ch(T1)
:1.98​
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Step 5: Calculate the Earthquake Design Actions:
                                 The Earthquake Design Action = 
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=Kp∗Z∗SP/u∗Ch(t1)=Kp*Z*SP/u*Ch(t1)=Kp∗Z∗SP/u∗Ch(t1)
﻿﻿Answer
:0.08​
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