Function
Produce the column strip design results considering the unbalanced moment.
Note
In order to use this function, KDS41 30 :2018 or KCI-USD12 must be selected in Design > Concrete Design Parameter > Design Code.
Call
From the Main Menu select [Design] tab > [Type : Meshed Design] > [Perform/Result] group > [Column Strip Design] > [Column Strip Design]
Input
Load Combinations
Select a desired load case or load combination.
Click the ... Button to the right to enter new or modify existing load combinations. (Refer to "Static Load Cases / Combinations")
Force Options
Element : Display the contour using the internal forces calculated at each node of an element.
Avg. Nodal : Display the contour using the average internal nodal forces of the contiguous elements sharing the common nodes.
Note
Avg Nodal does not consider the simultaneity for the load case in which maximum member forces are displayed about all elements such as Moving Load Case, Settlement Load Case and Time History Load Case.
Type of Display
Contour
Display the displacement of the model in contour.
The ... Button
Ranges: Define the contour ranges.
The Customize Range... Button : Assign the color distribution range of contour. Using the function, specific colors for specific ranges can be assigned.
Note
Contour Range Max/Min values can be larger than the max/min output values. If the Contour Range values exceed the output values, they are entered at Rank 0 and Rank 11.
Number of Colors : Assign the number of colors to be included in the contour (select among 6, 12, 18, 24 colors)
Colors : Assign or control the colors of the displacement contour.
Color Table : Assign the type of Colors.
The Customize Color Table Button : Control the colors by zones in the contour.
Reverse Contour : Check on to reverse the sequence of color variation in the contour.
Contour Line : Assign the boundary line color of the contour
Element Edge : Assign the color of element edges while displaying the contour
Contour Options : Specify options for contour representation
Contour Fill
Gradient Fill : Display color gradient (shading) in the contour.
Draw Contour Lines : Display color boundaries in the contour.
Draw Contour Line Only : Display only the colored boundaries of the contour.
Mono line : Display the boundaries of the contour in a mono color.
Contour Annotation : Legend or annotation signifying the ranges of the contour is displayed.
Spacing : Display the spacing for the legnd or annotation.
Coarse Contour (faster) (for large plate or solid model) : Represent a simplified contour for a large model using plate or solid elements in order to reduce the time required to represent a complete contour.
Extrude : Where plate elements or solid elements along a cutting plane are represented in contour, a three dimensional contour is created. The positive direction of the analysis results is oriented in the z-axis direction of the local element coordinate system.
The option is not concurrently applicable with the Deformed Shape option. Similarly, the option cannot be concurrently applied to the cases where the Hidden option is used to display plate element thicknesses or the Both option is used to represent Top & Bottom member forces (stresses).
Values
Display the nodal displacements in numerical values.
The font and color of the numbers can be controlled in Display Option.
The ... Button
Decimal Points : Assign decimal points for the displayed numbers
Exp. : Express as exponential
Min & Max : Display the maximum and minimum values
Abs Max : Display the absolute maximum value
Max : Display only the maximum value
Min : Display only the minimum value
Limit Scale(%) : Set the screen display limit for nodal displacements relative to the selected maximum or minimum value
Set Orientation : Display orientation of numerical values
Note
The default Decimal Points can be controlled in "Preferences".
Set Orientation = 0 horizontally displays the numerical values to the right of nodes or elements.
The orientation angle represents the counter-clockwise direction, which may be used to enhance the readability of the numbers.
Legend
Display various references related to analysis results to the right or left of the working window.
The ... Button
Legend Position : Position of the legend in the display window
Rank Value Type : Specify a type of values in the Legend and the number of decimal points.
Components
Rebar : Display the column strip reinforcement status by diameter and spacing.
Output Contents : Top bar (End : Center : End), Bottom bar (End : Center : End)
Middle Strip : If you check the Slab Design Result checkbox in the lower part of the dialog, you can check the reinforcement result of middle strip slab.
- For the design of the middle strip slab, only the slab elements set as Sub-Domain are calculated.
- Top bar: Calculate the most unfavorable top bar including the Column Strip area.
- Bottom bar: Calculates the most unfavorable bottom bar, excluding the Column Strip area.
- If the bottom bar of middle strip requires both Basic Rebar and Add Rebar, it is output in two lines.
(Refer to the figure below)
As (m^2/m) : Display the area of the required reinforcement.
Resistance Ratio : Display the ratio of the design strength
Bending Moment Diagram : Display the bending moment diagram of the column strip
Unbalanced Moment : Display the unbalance moment of the column strip, and the strength ratio considering the unbalance moment (KCI2012 7.12.7 Commentary) at the node position of the column.
Note
Determination of Column Strip Design Member Force:
At each position of i, 1/4, 2/4, 3/4, and j part, determine the largest value among all strength load combinations for design review.
The upper/lower design member force of the i -part is designed by taking the maximum negative/positive moment member force among all strength load combinations at i - part.
The upper/lower design member force of the central part is designed by taking the maximum negative/positive moment member force among all strength load combinations at 1/4, 2/4, and 3/4 parts.
The upper/lower design member force of the j -part is designed by taking the maximum negative/positive moment member force among all strength load combinations at the j part.
As shown in figure, it is as follows.
Operations
The Design Result Button : Produce the design result in a text format.
The Update Rebar Button : Save the reinforcement design results in the model data.
Used for Column Strip Checking