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Topic: User guide for linear performance analysis and retrofit possibilities Program: ideCAD Static Version: 6.x, 7.x 1- Arrangement of existing building materials 2- Building model a- Columns b- Beams c- Curtain[/i ]r 3- Arranging the reinforcements a- Arranging the beam reinforcements b- Arranging the column reinforcements c- Arranging the curtain reinforcements 4- Analysis 5- Adjusting the Performance Analysis Settings 6- Linear Performance Analysis Reports 7- Strengthening the Existing Structure [i ] a- Jacketing of the columns b- Defining the reinforcement curtain c- Strengthening of the beams 8- Reinforcing the Added Strengthening Elements 9- Performance Analysis of the Reinforced Structure 10- Preparation of the Drawings a- Column application plan b- Vertical expansion of the column c- Curtain details Organization of existing building materials In the program, compare the concrete compressive strength and steel class of the building you will analyze performance with the material in the building tree. You can specify it from the r folder. To define the existing reinforced concrete material; -> Open the Materials folder in the Structural Tree view. -> To interfere with the existing material, press the right mouse button on the material and click on the Properties line from the pop-up menu. -> Static Material Properties dialog will open. -> Edit the concrete characteristic compressive strength and reinforcement yield stresses according to your current project data. By default, 20 will appear in the concrete characteristic compressive strength line. This value defines the C20 class as concrete. If necessary, make another selection from the list, or if you have a non-list value, type that value. Concrete characteristic tensile strength, constant k1, elasticity and shear modules will change automatically according to the concrete type you choose. Select the reinforcement class in the Bending reinforcement yield stress line. For example, the value 420 defines the class S420. If necessary, make another selection from the list, or if you have a non-list value, type that value. Creating the building model The method to be followed in modeling the building is the same as creating a new building model. There may be issues that need to be changed on the basis of structural elements. These issues are explained below, respectively: Columns The negative effects of reinforcement corrosion and overlap lengths detected as a result of on-site inspection in the columns of your existing structure are listed in the Rebar corrosion multiplier and Insufficient clamping length yield stress factor columns under the Static/Reinforced Concrete tab in Column Settings. You can edit it by interfering. Reinforcement corrosion multiplier: It is a ratio used in structural performance analysis. At the rate written in this line, the wear on the reinforcements in existing structures that have been exposed to the corrosion conditions specified in the earthquake regulations can be taken into account in the performance calculation of the structure. The value defined in this line is multiplied with the existing reinforcement areas of the elements and the value found as a result of the multiplication is considered as the reinforcement area. NewArea=multiplier*ExistingArea Insufficient clamping length yield stress multiplier: It is used to reduce the steel yield stress of the elements. The value entered in this line is multiplied by the steel yield value of the element. NewSteelFlowValue=multiplier*ExistingSteelFlowValue You can also adjust the status of stirrup arrangements of your existing columns by interfering with the lines There is stirrup density on the lower end and there is stirrup density on the upper end in the Column Settings/Sheathing tab. If there is a stirrup density in the column in question of the structure under investigation, the option is ticked. Otherwise it is not marked. Beams You can adjust the negative aspects of reinforcement corrosion and overlap lengths detected as a result of on-site inspection of the beams of your existing structure by intervening in the Rebar corrosion multiplier and Insufficient clamping length yield stress multiplier columns under the Cracked Section/Corrosion tab in Beam Settings. In addition, you can adjust the status of stirrup arrangements of your existing beams by interfering with the lines There is stirrup tightening on the Right end and There is stirrup tightening on the Left end, which are also in the same place. Reinforcement corrosion multiplier: It is a ratio used in structural performance analysis. At the rate written in this line, the wear on the reinforcements in existing structures that have been exposed to the corrosion conditions specified in the earthquake regulations can be taken into account in the performance calculation of the structure. The value defined in this line is multiplied with the existing reinforcement areas of the elements and the value found as a result of the multiplication is considered as the reinforcement area. NewExistingArea=multiplier*ExistingArea Insufficient overlapping and clamping factor: It is a ratio used in building performance analysis. It is used for existing structures. It is used to reduce the steel yield stress of the elements with insufficient overlap and clamping defined in the earthquake code. The value entered in this line is multiplied by the steel yield value of the element. NewFyk=multiplier*CurrentFyk There is stirrup tightening at the left end: It is a necessary information for performance analysis in retrofit projects. If there is a stirrup tightening at the left end of the beam in question belonging to the examined structure, it is marked. Otherwise it is not marked. There is stirrup tightening at the right end: It is a necessary information for performance analysis in retrofit projects. If there is a stirrup tightening at the right end of the beam belonging to the examined structure, it is marked. Otherwise it is not marked. Shears You can adjust the negative effects of reinforcement corrosion and overlap lengths detected as a result of on-site inspection of the walls of your existing building by intervening in the Rebar corrosion multiplier and Insufficient clamping length yield stress multiplier columns under the Static/Reinforced Concrete tab in the Shear Settings. In addition, you can adjust the status of stirrup arrangements of your current curtains by interfering with the lines There is stirrup tightening at the Lower end and There is stirrup compaction at the upper end, which are also in the same place. If there is a stirrup tightening on the curtain in question of the structure under investigation, the option is marked. Otherwise it is not marked. Athere is stirrup tightening at the bottom end: It is an option to be considered in linear performance analysis for retrofit projects. This option is selected if stirrups are tightened at the lower end of the existing element. There is stirrup tightening at the top end: It is an option to consider in linear performance analysis for retrofit projects. This option is selected if stirrups are tightened at the lower end of the existing element. Reinforcement corrosion multiplier: It is a ratio used in structural performance analysis. At the rate written in this line, the wear on the reinforcements in existing structures that have been exposed to the corrosion conditions specified in the earthquake regulations can be taken into account in the performance calculation of the structure. The value defined in this line is multiplied with the existing reinforcement areas of the elements and the value found as a result of the multiplication is considered as the reinforcement area. NewExistingArea=multiplier*ExistingArea Insufficient overlapping and clamping factor: It is a ratio used in building performance analysis. It is used for existing structures. It is used to reduce the steel yield stress of the elements with insufficient overlap and clamping defined in the earthquake code. The value entered in this line is multiplied by the steel yield value of the element. NewFyk=multiplier*ExistingFyk Arranging the reinforcement Another issue that needs to be adjusted before evaluating the performance of your building is the definition of the reinforcements to the program as applied on site. For this, you should intervene in the reinforcements of the relevant elements from the dialogs under the Reinforced Concrete menu. Arrangement of beam reinforcement -> Click on the Reinforced Concrete/Beam line. -> Click the Beams tab in the dialog that opens. -> If you click the All Floors box at the bottom of the dialog, you can view all your beams at once. -> In this dialog, arrange the beam reinforcements according to your current structure. Arrangement of column reinforcements -> Click on Reinforced Concrete/Column line. -> Click the Columns tab in the dialog that opens. -> If you click the All Floors box at the bottom of the dialog, you can view all your columns at once. -> In this dialog, arrange the column reinforcements according to your current structure. Arrangement of curtain reinforcement -> Click on Reinforced Concrete/Shearing line. -> Click the Curtains tab in the dialog that opens. -> If you click the All Floors box at the bottom of the dialog, you can view all your curtains at once. -> In this dialog, edit the curtain reinforcements according to your current structure. Fixing the edited rebarsi Another issue that needs to be considered in arranging the rebar is that the DS column in the dialogs is checked after arranging the rebars. If this column is not checked, it means that the reinforcement entered in the relevant element is not fixed. When you do the analysis in the next step, the reinforcements of these unfixed elements will change according to the end forces found. Analysis After the modeling process of the existing building is completed according to the available data, it is necessary to perform an analysis once in order to define the soil type and to automatically create load combinations in the program. To have an analysis, simply click on the Analysis/Analysis+Reinforced Concrete line. Editing Performance Analysis Settings When you click on the Analysis/Linear Performance Analysis line to have performance analysis performed for the first time in the program, the Analysis Settings/Reinforcement dialog will appear. Analysis type: In linear performance analysis, it is selected whether the earthquake load will be determined according to the equivalent earthquake load method or according to the mode combining method. The information level of the building: The information level of the building is selected according to the conditions defined in the 7.2 Information Collection heading in the earthquake code. Knowledge level coefficients; Limited - > 0.75 Medium -> 0.90 Extensive -> 1.00 Targeted performance level: Select the targeted performance level of the building to be retrofitted from the list. The performance levels that should be determined according to the intended use of the building are specified in Article 7.8 and Table 7.7 in the earthquake code. According to the selected performance level, the performance evaluation of the building will be made by the program and will be prepared as a report. The performance evaluation of the building is made according to the principles specified in Article 7.7 of the earthquake code. Earthquake exceedance probabilities for the targeted performance level: Select the earthquake exceedance probability for the targeted performance level of the building to be retrofitted from the list. Information about the probability of exceedance, which should be selected according to the intended use of the building, is given in Article 7.8 and Table 7.7 in the earthquake code. According to the selected option, the performance evaluation of the building will be made and reported by the program. According to the regulation, the probabilities of exceeding determine the acceleration spectrum ordinate values. In the earthquake calculation of the building, which has a probability of being exceeded 10% in 50 years, the acceleration spectrum ordinates are taken the same as the values specified in article 2.4. Acceleration spectrum ordinates are taken as half of the values specified in item 2.4 in the earthquake calculation of the building, whose probability of exceedance is 50% in 50 years. The acceleration spectrum ordinates of the building, which has a 2% probability of being exceeded in 50 years, are taken as 1.5 times the values specified in item 2.4 in the earthquake calculation. Count brittle elements in failure region: Elements broken by shear are defined as brittle elements in the earthquake code. According to the regulation, brittle elements are collapsed elements and must be strengthened. Since you will be strengthening the brittle elements already, you can leave this option unchecked and not include them in the building performance calculation. In this case the program will also list brittle elements in the elements to be strengthened header. If you check, brittle elements will be evaluated directly in the collapse region. Consider screed in beams: If checked, the beam's cross-section is considered as a slab cross-section and the reinforcements of the slab in the slab are included in the existing reinforcement areas of the beams. If it is not marked, the cross section of the beam is considered as a rectangular section and the reinforcements of the floor in the table are not included in the existing reinforcement areas of the beams. Consider crossties in column Vr calculation: If checked, crossties in the column are added to the column stirrups and taken into account in column Vr calculation. If it is not checked, it will not be accepted. Analysis scope: Full analysis of the reinforced and non-reinforced structure: When the option is selected, a performance analysis is performed in two stages, with the existing and reinforced state of the structure, whose data is entered, reinforced with sheathing and/or reinforcement shears. After the analysis, if desired, the comparative results of the two cases can be reported in the optional retrofit reports. Performance analysis of the structure as entered: When the option is checked, it performs the performance analysis of the structure prepared as data. When you press the OK button after making the relevant adjustments in this dialog that opens, the program will analyze the performance of the structure. Linear Performance Analysis Reports After performing the performance analysis in the program, Linear Performance Analysis Report will be automatically displayed on the screen. Click the Report/Linear Performance Analysis Report line to get the report of a project that you have previously had a performance analysis done. Select the Performance Analysis line from the dialog that opens and click the OK button. On the first page of the report that opens, information about the values used in the performance analysis is listed. In addition, the performance levels of the structure are listed for four different earthquake loadings. On other report pages, there are reports on current element information, performance analysis results of elements, damage situations and regulation controls. In the last part of the report, the performance evaluation of the building is made according to article 7.7 of the earthquake code. Strengthening the Existing Building If your building does not provide the desired performance level as a result of the performance analysis, you should add various structural elements to the structure and try to achieve the desired minimum performance level. These elements can be either column sheathing or reinforcement curtain according to your architectural plan. Sheathing of columns To coat your existing columns; -> Click on the Colon command. -> Click the Change Mantle Edge command from the helpful toolbar that opens. -> Click on the corresponding edge of the column you want to sheath. -> Enter the thickness of the mantle in the box that opens and click the OK button. -> To coat all the sides of the column at the same time, approach the midpoint of the column and click when the virtual image is created. To delete the mantle edge you have defined; -> Click on the Colon command. -> Click the Remove Mantle Edge command from the helpful toolbar that opens. -> Click on the corresponding edge of the column whose mantle you want to delete. -> To delete the mantle on all sides of the column at the same time, approach the midpoint of the column and click when the virtual image is formed. In order to make the settings of the mantle you have defined; -> Select the column and click the Object Properties command. -> Click the Sheathing tab in the dialog that opens. You can edit the settings suitable for your project from this dialog. Defining a reinforcement curtain If there is no architectural restriction in your project, you can also use reinforcement curtains as a reinforcement element. In order to define the reinforcement curtain in the program; -> Click on the Draw/Objects/Panel/Reinforcement Curtain line. -> Move the mouse cursor over the drawing area where you want to start drawing the reinforcement screen (this can be a column node or any point to which the screen will be attached). When the cursor changes shape, click with the left button. -> After determining the first point of the buff curtain, move the cursor over the second point. When the cursor changes shape, you can change the drawing line of the panel with the space-bar key on the keyboard. (Space-bar is used to change the bottom-top-middle selection in the panel settings dialog during panel drawing). Click the left mouse button again. -> Press Esc on the keyboard to exit the boost screen drawing mode (command). -> Reinforcement screen will be drawn. One thing to consider when entering a reinforcement curtain is that if your curtain will be under an existing beam, you must enter the curtain upper level value as negative as the beam height in the curtain settings dialog before entering your curtain. In order to edit the settings of the reinforcement curtains you have entered; -> Select the curtains whose settings you want to edit. -> Click the Object Properties command from the toolbar. -> Adjust your curtain settings from the relevant tabs in the dialog that opens. The difference between power-up curtains and other curtains is that the Power-up Curtain option is active in the Curtain Settings/Reinforcement tab. The explanations of the expressions in the Accessories tab are as follows; Reinforcement curtain: If the entered panel is reinforcement curtain, this line should be marked. Use left column as title: Select the option if you want the program to accept the column to the left of the reinforcement curtain as the curtain title. Use right column as title: Select the option if you want the program to accept the column on the right of the reinforcement curtain as the curtain title. Connection (Rot): The length, spacing and diameter of the reinforcements that will connect the reinforcement curtain to the column and beam are arranged in this group. Enter the relevant values. Reinforcement of Beams There is no application for beam reinforcement in the ideCAD Static program. However, in the Reinforced Concrete/Beam dialog, it can be assumed that the beam is strengthened by arranging the stirrup diameter and spacing of the beams in brittle element status. The relevant beam can be detailed by the engineer and applied on site, with external wrapping. Reinforcement of Added Reinforcement Elements In order to determine the reinforcements after the reinforcement elements are entered in the appropriate places in the project; -> Analysis/Analysis+Reinforced Concrete command is clicked. -> Reinforcements required statically are placed on the elements automatically by the program. -> Reinforcements can be changed in reinforced concrete dialogs if necessary. Performance Analysis of the Reinforced Structure In the model, the reinforcement of the reinforcement elements was determined by the analysis; -> Analysis/Linear Performance Analysis command is clicked. -> In the Analysis Settings/Reinforcement tab, check the box for Full analysis of the Fortified and non-reinforced structure as the scope of analysis. -> If the structure does not provide the desired performance level as a result of the analysis, additional strengthening measures are reviewed. -> If your structure has reached the desired performance level with the changes you have made, you can proceed to the drawing processes. Preparation of Drawings Drawings of reinforcement elements added in the program can be made under the headings under the Drawing menu. Column application plan To get the application plans of sheathing elements and reinforcement curtains; -> Click on the Line Drawing/Column Application Plan. -> In the dialog that opens, mark the floor or floors where you want to receive the application plan. Edit your settings by clicking the -> Settings button. -> Depending on the status of your layout, click either Turn On Power Up In Place or Turn On Power Up Outside button. -> Your application plan will be created. Column vertical expansions To get the vertical expansions of the columns you sheathed; -> Click on the Line Drawing/Column Vertical Expansions. -> Edit the appropriate settings in the dialog that comes up. -> Click on OK button. -> The vertical expansions of the elements you sheathed and other columns will be drawn. Curtain details To get the details of existing curtains; -> Click on the Line Drawing/Screen Details. -> Make the relevant settings in the dialog that opens. -> Press the OK button. -> Your curtain details will be drawn. The details of the connection (rod) elements made with the curtains are not drawn automatically in the program. You can create connection details using the program's 2D features. The subject has also been added to the message as a pdf document.