Earthquake load at ground safety stresses of beamless rafts

[Medeniyetmuhendisi]

In the analysis settings, with the option to use earthquake loads in the ground safety stress of non-beamed rafts, the safety stress can be increased by 50 percent in the soils in groups A, B and C, according to TDY 2007 Article 6.3.2.1. What is the reason of this? Also, under normal conditions, the ground safety stress does not recover, and it saves when you select this option. In other words, when the earthquake load is applied to the foundation, the safety stress is increased by 50%. Is there any downside to this? How can it be explained that the building becomes safe with this option, while the ground is not normally safe?

 

[HakanŞahin]

Re: Earthquake in ground safety stresses of non-beamed rafts

With the option "Use earthquake loading in ground safety stresses of non-beamed rafts" option in the analysis settings, according to TDY 2007 Article 6.3.2.1, groups A, B and C The safety stress can be increased by 50 percent in the soils entering the ground. What is the reason for this? Also, if the soil does not recover the safety stress under normal conditions, when you select this option, it saves. That is, when the earthquake load is applied to the foundation, the safety stress is increased by 50%. Is there any drawback to this? How can it be explained that it becomes safe with this option when it is not?

Hello, The question you asked in the attached seminar document, subject 4.1, has been explained.The Understanding and Calculation of Bearing Power on Soils Under Static and Dynamic Loads Prof. Dr. S. Feyza ÇINICİOĞLU Istanbul University, Civil engineering Department