Performance Analysis

[aksualigurbuz]

I have just started using idecad. There is a situation like this. I design a building by myself simply symmetrically. Then when I solve it in ide, zero error occurs. Then I subject this building to performance analysis and I get statements such as advanced damage to beams and advanced damage to columns. .I don't understand why such a thing happens. Because I want to give technical report to some places. The building I am going to give has been resolved according to 2007. In some cases, they do not have sample reports. Therefore, I have to have core cores taken. Etc..etc..the results usually do not save. However, I can think of the following: comes: "Even if I make a project from scratch, I say, "It's normal for them to come out." I say to myself. I wonder if I'm making the wrong decision. I also ask you how exactly the performance analysis is done, how the results are examined, what should be done in which damage cases. Could you please explain. It would be great if there is a detailed explanation so that I can ask the questions in my mind more easily and find out where. I can understand what mistakes I'm making and avoid making the wrong decision. It would be better if there is an explanation that explains the previous and next situations of a simple building and shows what the results mean in more detail. What I said is in the regulation, but I think it would be better to see it in practice. I wonder if the ide shows the elements to be strengthened. I throw it away. Does it say "K131 BEAM SHOULD BE STRENGTHENED" or do we subtract it from the damage percentages. I'm sorry I haven't done it before, maybe I'm asking simple questions, but as I said, I haven't done it before. I would be very grateful if you could help me. Thank you in advance.

 

[Levent Özpak]

Re: PERFORMANCE ANALYSIS Hello, First of all, I think that when making a retrofit project, it is necessary to have a good grasp of the reinforcement issues specified in Chapter 7 of Earthquake Code. The main thing in linear performance analysis is to provide Life Safety or Immediate use performance level according to the condition of the structure. It's not always a problem if some elements are at significant or advanced damage levels. The conditions and acceptances of the earthquake performance of the buildings are specified in the Seismic Code Section 7.7. If the desired performance level cannot be achieved in a structure, it can be strengthened to reach the performance level. The program warns by giving information that if the shear damaged elements are not accepted in the collapse zone, this element should be strengthened. Apart from this, I don't think it would be right to talk about a direct element-based reinforcement. A retrofit solution would be more appropriate by considering the entire system in a way that achieves the targeted performance level. Information about the path to be followed in data entry in retrofit projects in the program can be obtained from the links below.

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Good work

 

[aksualigurbuz]

Re: PERFORMANCE ANALYSIS thank you, Mr. Levent. I will follow the links, but I had one more question. Why don't I have a problem when I analyze a new building. Later, when I have a linear performance analysis done on the same building with the same materials, it may appear in the damage area. In fact, reinforcement due to shearing on the curtains. It says it should. If it was, why doesn't it give an error in the analysis?

 

[Levent Özpak]

Re: PERFORMANCE ANALYSIS

thank you, levent bey. I will follow the links, but I had one more question. Why is there no problem when I analyze a zero building? it can come out in the damage area. It even says that reinforcement should be done on the curtains due to cutting. If it was, why doesn't it give an error in the analysis...

Could you add the project file you mentioned to the form? If the file size is large support You can also send it via e-mail to @ideyapi.com.tr.

 

[HakanŞahin]

Re: PERFORMANCE ANALYSIS

"...why is there no problem when I analyze a new building? When I have a linear performance analysis done on the same building with the same materials, it may appear in the damage area. It says it should be done. If that's the case, why doesn't it give an error in the analysis...

Hello, The fact that the program does not give an error after the analysis does not mean that the element is saved in the performance analysis, the important thing is that the structure achieves the targeted performance level. But; Let's go in reverse: 1. It is necessary to examine why the curtains you just entered go without cutting. I am of the opinion that the parameters I have shown in the picture cause this. Please check. Since your building is a new design: "There is stirrup tightening at the lower and upper ends." It should be marked "Reinforcement corrosion multiplier = 1". "Insufficient clamping length yield stress factor =1" should be taken. The same parameters apply for columns and beams. 2. The fact that the curtain is damaged as a brittle element affects the performance level of your building. That's why your structure (you wrote damage, I think you meant collapse) comes out in the collapse area. If you want more comprehensive help, attach your project to the message as stated by Mr. Levent or, if the file size is large, send it to our technical service via e-mail. Good work...

 

[yasinarslan]

Re: PERFORMANCE ANALYSIS

thank you, levent bey. I will follow the links, but I had one more question. Why don't I have a problem when I analyze a new building and then have a linear performance analysis done on the same building with the same materials? it can come out in the damage area. It even says that reinforcement should be made on the curtains due to shearing. If it was, why doesn't it give an error in the analysis...

Hello; There are two types of principles in the design of buildings in general. 1- Capacity-based design (Strength-based) 2- Figure design based on displacement (based on performance) The designs you have made according to the 2nd and 3rd sections of the Regulation are force-based designs. In this method, only the linear part of the material is taken into account and it is designed to carry the moment on it in an earthquake. Using only the linear part of the material means that it bears the effects on it. In fact, it means that it is not damaged at all, that is, no cracks occur. It is not possible to construct an economical and aesthetic structure. The regulation presents a rough approach in the form of reducing the earthquake load in order for the structure to carry the system by being damaged to a certain extent before it collapses. So that means. You have dimensioned your building elements according to zero damage, but let's provide the damage situation by reducing the earthquake load. R means the reduction coefficient in the regulation. Since you reduce the earthquake load with a coefficient such as 8, your building elements are of course damaged to a certain extent. Only you are making your calculations by considering this or not being able to determine which element is damaged and to what extent. In performance-based design, you determine the damage levels of these elements, which will only be damaged, one by one. In addition, the R you take into account is variable depending on the building, in fact, as a result of the performance analysis, you can find out exactly how much R you need to take and perform linear analysis. I hope that your evaluation of the performance analysis module of the program under this information will give you an idea. Good luck with.

 

[aksualigurbuz]

Re: PERFORMANCE ANALYSIS ok thank you. I understood the issue. I made a mistake about the coefficients in a few places, it doesn't say that it needs reinforcement anymore. It helped in the videos. The damage values on beams and columns are within the regulations. Thanks you very much. Good works...

 

[saridurmus]

Re: PERFORMANCE ANALYSIS While making the calculation, we need to look at what we are doing as Yasin said. Whichever calculation we are making, capacity or performance, it is necessary to read the regulation about it thoroughly. I say that the application purpose of both methods is different, we should consider it. I wish everyone a year where they will live to the fullest, with more days when they look back and say that they have lived happily ever after.

 

[o_berdibek]

Re: PERFORMANCE ANALYSIS In the performance analysis, earthquake load reduction coefficient is taken as R=1, but when a zero structure is collapsed, it can take values such as R=6,7,8. For example, if the earthquake load is 100 tons, in the performance analysis, the earthquake load acting on the building is 100 tons because 100/R=1. Since the design is made according to these values, the reason why it does not save a zero structure in the performance analysis is the design earthquake load I mentioned above.

 

[batuhann28522]

Good afternoon, I want to do performance analysis, but first, analyze with horizontal loads. I analyze with the apply horizontal load forces option in the analysis settings, but it still does not perform performance analysis.

 

[Levent Özpak]

Good afternoon, I want to do performance analysis, but it says to analyze with horizontal loads first. I analyze with the apply horizontal load forces option in the analysis settings, but it still does not perform performance analysis.

Hello, floors without slabs in the project (without rigid diaphragm), the analysis method is automatically analyzed according to the "Combination of mode contributions from Element-Specific results" option, and when the general analysis is done, information is given in the analysis status window. Performance analysis of structures with rigid diaphragms can be done in the program. Good work.