Some errors and discussions
Posted: 10 May 2011, 18:57
Hello,
I want to discuss and consult some important problems.
1. In AASHTO Bridge Seismic Design Specifications and Chinese Bridge Design Guidelines, the max response period is 10s. So in the menu Tools>Programm settings>matching parameters and in the menu Tools>Programm settings>response spectral, the max periods are both assigned to be 10s. After "Do Matching", there are two errors, "please do not use more that 400 period-acceleration pairs of values within the period matching range" and "Floating point division by zero". Should the two max periods be less than 8s if the period step is assign to be 0.02s? Can the default period step 0.02s be adjusted, for example 0.05s? If the period step is assigned to be larger such as 0.08s, can the converge precision be ensured?
2. When the max period in the menu Tools>Programm settings>matching parameters and the max period in the menu Tools>Programm settings>response spectral are both assign to be 8s, there is an error, ¡°Invalid floating point operation¡± after "Do Matching". Can the two max periods be equal to each other? If can not, why? If the max period in the menu Tools>Programm settings>matching parameters should be less than the period in the menu Tools>Programm settings>response spectral, how to decide the difference value between them?
3. Afer the No of Decimal Points is assigned to be 6 and "Do Matching", the decimal points are still 3 in the Matched time history file when ¡°save Record THs¡±. How to adjust to make the decimal points in the saved Matched time history file to be 6?
Thanks.
I want to discuss and consult some important problems.
1. In AASHTO Bridge Seismic Design Specifications and Chinese Bridge Design Guidelines, the max response period is 10s. So in the menu Tools>Programm settings>matching parameters and in the menu Tools>Programm settings>response spectral, the max periods are both assigned to be 10s. After "Do Matching", there are two errors, "please do not use more that 400 period-acceleration pairs of values within the period matching range" and "Floating point division by zero". Should the two max periods be less than 8s if the period step is assign to be 0.02s? Can the default period step 0.02s be adjusted, for example 0.05s? If the period step is assigned to be larger such as 0.08s, can the converge precision be ensured?
2. When the max period in the menu Tools>Programm settings>matching parameters and the max period in the menu Tools>Programm settings>response spectral are both assign to be 8s, there is an error, ¡°Invalid floating point operation¡± after "Do Matching". Can the two max periods be equal to each other? If can not, why? If the max period in the menu Tools>Programm settings>matching parameters should be less than the period in the menu Tools>Programm settings>response spectral, how to decide the difference value between them?
3. Afer the No of Decimal Points is assigned to be 6 and "Do Matching", the decimal points are still 3 in the Matched time history file when ¡°save Record THs¡±. How to adjust to make the decimal points in the saved Matched time history file to be 6?
Thanks.