Step 7: Release Internal Moments at Joints - SAP2000Īssumes that all structures are frames. To restrict SAP2000 to variables in the x-z plane, selectĬlick OK. The truss structure is now ready for analysis. Top the SAP2000 interface window and then click on Set Analysis Options. Variables in the x-z plane click on the Analyze menu located along the This example, the truss structure is modeled in the x-z plane. The forces should be should be displayed on the truss (properĭirection and magnitude) in the SAP2000 interface window. Enter -3000 in the Forces Global Z input field and That the truss was modeled in the in the x-z plane, therefore the forces are acting in the forces acting along the bottom cord of the truss. The following menu will appear:Įxample, there are three 3,000 lb. Joint, select the joint with the pointer and click on the Assign, Step 5: Apply Forces at Joints - To apply forces at a Joint with the pointer and Fast Restraints menu select the rollerĪfter the supports have been defined the truss problem should appear in the SAP2000 Joint with the pointer (an "X" should appear at the joint) and then click on the In the truss example, select the lower-left hand Listed in the Fast Restraints section of the menu, you should select the If the support conditions for your problem are not When working on two-dimensional structures, the Fast Restraintsīutton may be used for most problems. In most cases, the directions 1,Ģ, and 3 listed on the menu correspond to the x, y, and Restraints menu will appear as shown on the right. Tab at the top of the SAP2000 interface, then click on Joint, and then Restraints A blue "X" should appear at the joint to indicate The location and type of structural support, select the support location by clicking on Step 4: Define Structural Supports -To define For this truss problem, the frame elements are To define an element, click on a joint at the beginning of the elementĪnd than on the joint at the end of the element.
The Properties of Object window will appear.Īt this point, we can select a frame object you want to draw, or use the defaultĪnd update the frame element properties later. Step 3: Draw Frame Elements - To define eachįrame element, select the Draw Frame Element button Click on grid intersection lines to define joints. Locations, select the Draw Special Joint button on the Step 2: Locate Truss Joints -To define the joint Left-hand side window so that you have a generalīutton on the top bar to see a 2D view of the
Located along the top edge of the interface window. To adjust the views, select an window and click on the appropriate view button When you click OK, SAP2000 generates the grids lines you have justĭefined and shows you the grid system in the SAP2000 interface window.īy default SAP2000 show two views of your problem, typically a 3-D view and an x-y Y-direction grid line is necessary for 2D problems. The number of grid line in the x and z-directions are 5 and 2, For the truss shown above, the the grid spacing in the x and z-directions is 240 Your grid system by entering data on the Quick Grid Lines SAP2000 assumes that your two-dimensional structure resides in the x-z plane. Window will appear (see the figure on the right). You select Grid Only on the menu, the Quick Grid Lines Necessary and SAP2000 will convert the valuesįor you. Select you units for the problem, the default is Grid lines and grid spacing to locate the joints of the truss. To use the grid, determine the appropriate number of When you start SAP2000 Educational Version 20 you should see theįor general structures. To help students become familiar with some of the numerous aspects and features of SAP2000, the following tutorial will focus on determining the forces in each member of the Questions, or you you find any of these instructions unclear or inaccurate, please contact
The order of some of these steps is not critical however,Īll step should be completed before execution of the the analysis. The following is a step-by-step procedure for analysis a two-dimensional truss