raft foundation ground safety negative error

E

elifabus

New Member
Hello there; I could not fix the error in the raft foundation of the 9-storey building. The building is adjacent, so I cannot increase the base area. Thanks in advance for your help..
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Since it is the weekend, experienced friends from me may not be able to hang out on the forum, so let me write as much as I know. 1.upper basement rigid floor number should be -2. 2.A,b,c soil groups suggest that you can increase 50% in earthquake loading and save it according to the average stress. Soil safety problem In group 3.c and d, you can consider superstructure interaction in analysis settings in the regulation When the management does these, beams and other problems arise at this time. r=coefficient selection problems may arise in beams, etc.
 
My suggestions for Mr. elifabus project (in addition to Mr. Matrax's comments) 1- your system is weak in my opinion, put earthquake curtains in the appropriate places in both directions 2- your column-beam junctions are wrong, fix the places I marked in the appendix 3- center the beams to the columns 4- check the wall loads 5- ladder process, solve the building as a semi-rigid diaphragm together with the stairs. 6- You can enlarge the raft foundation by making cantilevers on the edges of the foundation where the stresses are concentrated at the edges, as the foundation thickness is too much, it is enough to enlarge the foundation 100-110 cm. increase the thickness of the reinforcement if necessary 7- Correct the geometry control errors 8- install the ribs on the short span beams Take it easy Ünver ÖZCAN
 
Findings and suggestions for data entry in your project are as follows; * Columns such as S01-S03-S06-S08-S28 are outside the limits of the raft flooring. (You can examine the 3D frame from the perspective window) *It is recommended to model the panel objects as shells. *Choosing the Superstructure interactive solution option in the Analysis Settings/Foundation-Soil Tab will reduce the foundation stresses.
 
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