Stepped raft foundation

A

alisenay

New Member
Greetings; I would be very grateful if someone could explain how to make a stepped raft foundation with a section along the X axis that I sent in the appendix. Thank you from now
 
Hello, I am adding 2 examples of cascading basic situations. In example_stage1.ide6, RD1 raft is created first. In the region where the level is located, the floor space is settled with the command of the floor space. Then, in the same region, the area where the floor edge and the level are bounded is created. RD2 slab is created by giving an elevation of -100 cm in the raft slab settings. Panels in the zone where the step is located are entered. (Divide line is inactivated by intersections in the panel assistant toolbar while defining the panels.) In panel settings, panel level -100, upper level -300 cm is entered. In the static reinforced concrete tab, the -model as shell line- and -basement/panel that does not continue on all floors - lines are marked. In the Analysis Settings/Basic Tab - Superstructure interactive solution line - should be checked. In Example_step2.ide6, it is assumed that the step continues along the y-axis. Here, each level is created as a separate closed area with the edge of the raft flooring. The RD1 and RD5 tile is defined as 40 cm high, and the RD2 and RD4 tile is defined as 60 cm high. The RD3 slab is defined by giving a level of -100 cm in the tiling settings. P1 and P2 panels in the step zone are entered. In panel settings, panel level -100, upper level -300 cm is entered. In the static reinforced concrete tab, -model as shell- and -flooded/non-continuous panel-lines are marked. In the Analysis Settings/Basic Tab - Superstructure interactive solution line - should be checked.
 
Thank you very much, Mr. Levent. It's been too painful. I have a question. 2. What kind of structure do the RD1 and RD2 raft foundations in the example show in behavior. As a result, they were modeled as two separate raft foundations during modeling. Will there be an ongoing raft foundation behavior or will it be analyzed as if there is a joint? The same question applies to RD4 and RD5 raft foundations and panels modeled on the sides of the foundations. Greetings
 
Hello, this was written incompletely by the building inspection company. 3- There is a gradual raft foundation in the project. There is no provision in the regulation regarding gradual foundation. However, in gradual foundations with a high level difference, drawbacks arise. The elevation difference between the foundations in the project is 3.95 m. This is quite a height. It will create additional effects in the connection of the curtain connecting the foundation of the upper building to the lower building. In addition, the surcharge load and horizontal thrusts to this connection wall (must be calculated according to the values to be taken from the ground report) should be taken into account. Gradual foundation should not be made unless it is necessary. The project owner states that he built a gradual foundation in accordance with the decision of the Municipal Council. It is unacceptable to solve the PB101 and PB102 walls, which are h=4.65 m high, placed between two foundation heights in the project, as normal basement panel curtains. As a matter of fact, within this project; While longitudinal reinforcement was placed at intervals of fi 14/14 even on the fill surface of the retaining walls between h= 1.03 m and h= 3.64 m around the parcel, fi 14/23-24 was placed on the PB101 and PB102 walls. As stated above, the solution to be made without considering the loads to be taken according to the 1st basement foundation load, surcharge load and backstage ground values will be wrong. (I declare that I cannot take any responsibility in this state) What kind of solution should be made regarding this deficiency? You can download my project here
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Hello, my opinion. Building control is right. Don't tap on the raft foundation. In addition, the horizontal soil load on the curtains is not taken, the gaps in the floors are not formed by the floor edge, My engineer for forty-one years. The only floor I have seen for the first time is the floor sitting on a column. WHERE THE WORDS END IN CIVIL ENGINEERING. Ünver ÖZCAN
 
Mr. Unver, I am a recent graduate. I am trying to do the right thing and research as much as I can. As a newly graduated engineer, I thank you, good work.
 
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