Challenge

Week 6 Challenge

Aim and Introduction:

1. Electrical lamp post,

2. Traffic signal post,

3. Pipe loads,

4. collision and other utility loads,

The Electrical, Mechanical, Architectural elements are considered to be utility loads
In this challenge, we are going to design a bridge that carries a pipe of 200mm and 700mm diameter.
normally the pipe is supported by thrust blocks, when an obstruction came we use the bridge to connect the pipe from one end to another end.
In the challenge the bridge which carries the pipe, the pipe's self-weight will main load and liquid which carries may be water, oil, or any other kind of chemicals.
let's calculate the load for the given D.I pipe and apply it to the bridge.

Procedure :

The self-weight of the pipe and live load due to pipe is needed to be calculated
The total load due to the pipe is

use translational repeat command in the geometry tab enter number of steps as 1 with the spacing of 3m in z-direction,
The 3 metre specifies the width of the bridge.

after specifying the width of the bridge, now use translational repeat command again for specifying its length, provide length as 24m.
enter the spacing value as 12m with a number of steps as 2 click on link steps, remove unnecessary members.

The next is to assign a property, click on prismatic and add a circular section of 1.5-metre dia.
select the piers and assign the circular sectional property to selected piers.

Add a node along the width of the bridge for adding a 200mm dia pipe
Click on the geometry and use the insert node command a dialogue box will appear enter the required distance and click on add new point
repeat the same and add the nodes for the other two ends and add beam by connecting the nodes.

insert another node for a 700mm dia pipe.
Click on the insert node command and enter the required value and select add a new point.
create beam using add beam command.

insert node for creating the bottom chord bracing as per dimensions given in question repeat the same procedure for adding nodes,
create the nodes at a spacing of 3 m each and add them at both the side.

connect the cross girders by referring to the question.
connect it by using add beam command-click on the corner node, connect it at the centre node and connect again at the corner that forms an arrow-like beam.

The snap shows the longitudinal section of the girder that provides support to the pipe-carrying bridge.
use translational repeat command in the y-direction and click on the link steps, provide the required spacing and no of steps.

now loading is needed to be added, click on load case details add it as member load by giving uniform force.
Enter the calculated value and use the minus symbol to indicate the load acting downwards, click on the global y-direction then click add apply it to the 700mm dia pipe.

Now enter the loading for 200mm dia pipe, use minus symbol to indicate the load acting downwards.
click on global y direction and add it.

The above two images shows the loading diagram for both the pipes.
And also self weight is need to be added click loading in the load cases details add self weight use factor 1 in the y direction.
after loading click on post processing analysis to enter the into analysis tab.

Results :

Click on the run analysis command in analysis and design command to check with errors, after that click on post-processing mode to analyze the structural behaviour due to pipe load.

Ship work like this
in your own course.