- Where several beam elements are continuously connected in a straight line, set the end points of the line and enter the continuous beam load. The load type may be a distributed load or in-span concentrated loads. Modify or delete previously entered loads as necessary. Loads can be also applied to a curved continuous beam, which is located in the plane of the loading direction. In addition, curvilinear distribution such as earth pressure can be loaded by using curved loads.
From the main menu, select [Load] tab > [Type : Static Loads] > [Static Loads] group > [Beam Loads] > [Line]
Line Beam Loads dialog box
Load Case Name
Assign the load case name. Click the ... button to the right to enter, additional load cases and modify or delete existing load cases.
Load Group Name
Select the desire Load Group Name. Click the ... button to the right to enter additional load group names and modify or delete existing load group names.
Add : To enter or add new continuous beam loads on beam elements connected continuously in a straight line
Replace : To replace previously entered continuous beam loads on beam elements connected continuously in a straight line
Delete : To delete previously entered continuous beam loads on beam elements connected continuously in a straight line
Assign the loading type of continuous beam loads. The loading types are as follows :
Concentrated Forces : Concentrated forces at a point in span
Concentrated Moments/Torsions : Concentrated moments/torsions at a point in span
Uniform Loads : Uniformly distributed load
Uniform Moments/Torsions : Uniformly distributed bending moments/torsions
Trapezoidal Loads : Trapezoidal load varying linearly along the beam length
Trapezoidal Moments/Torsions : Trapezoidal bending moments/torsions varying linearly along the beam length
Curved Load : Curvilinear load distribution based on a curve equation varying along the beam length
Curved Loads are loaded on three equally divided segments of elements. If an element is long, the load distribution becomes close to a straight line. So the elements need to be sufficiently divided to closely represent curved load distribution.
Uniform Pressure : Uniform pressure load that is entered per unit area considering the section shape.
Trapezoidal Pressure : Trapezoidal pressure load that is entered per unit area considering the section shape.
Select the control target for loading the beam loads.
On the loading Line
Line Beam Loads are applied to the elements on a straight line defined by two nodes.
Line Beam Loads are applied to the selected elements.
By assigning the eccentricity distance, the user can easily assign the eccentric load.
As shown in the picture below, by inputting the eccentricity distance and load, the program automatically converts them into an equivalent moment. This function is convenient to assign an eccentric beam load, such as wind load.
from Offset : Eccentricity from the node with the Section Offset considered
from Centroid : Eccentricity from the centroid
Input of the load using the eccentricity
Direction : Input the direction of eccentricity
Distance : Input the distance of eccentricity
I-End : Eccentricity from the ith node
J-End : Eccentricity from the jth node
Additional H from Top
This option becomes active when the Load Type is Uniform Pressure or Trapezoidal Pressure.
As shown in the figure below, apply the pressure load considering the height of the barrier H that is not the part of the model. Additional H is the distance from the top in the Local y or z (+) direction depending on the load direction.
Additional H for entering the pressure load
Assign the loading direction of continuous beam loads. The loading directions are as follows :
Local x : Beam load applied in the element local x-direction
Local y : Beam load applied in the element local y-direction
Local z : Beam load applied in the element local z-direction
Global X : Beam load applied in GCS X-direction
Global Y : Beam load applied in GCS Y-direction
Global Z : Beam load applied in GCS Z-direction
When the loading direction does not correspond to the above 6 directions, enter the force components in each direction with appropriate signs.
Define if the continuous beam load is to be applied along the continuous beams or if the loading is to be vertically projected on the beams. This command takes effect only when the load type is 'Uniform Loads' or 'Trapezoidal Loads' and the loading direction is 'Global'.
Yes : When a vertically projected continuous beam load is applied to the continuous beams.
No : When a continuous beam load is applied along the continuous beams.
Define if the loading positions of the continuous beam loads are to be entered in the relative ratio of a loaded beam length.
Relative : Relative ratio of a beam length
Absolute : Real beam length
x1, x2, x3, x4, W1, W2, W3, W4 : Refer to the guide diagram to specify the load magnitude and locations.
a, b, c : Constants defining the load distribution equation
When the Curved Load Type is selected, curvilinear distribution is given by
Nodes for Loading Line
Enter the node numbers of the two ends of the continuous beams. The two node numbers may be set with the mouse using Node Snap in the working window.
Check in copy load to repeat the continuous beam loads for other rows of continuous beams.
Axis : Set the copy direction
x : UCS x-direction
y : UCS y-direction
z : UCS z-direction
Distances : Copy distances
When copying loads onto several rows of other continuous beams, enter the copy distances (spacings) as many times as required. (Ex, 5.0, 3.0, 4.5, email@example.com)