How do I calculate the deflection of an L-shaped pipeline with added loads?

In summary, the conversation discusses how to calculate the deflection of the upper flange in a pipe configuration, including the weight of the pipe and other potential loads such as water or coal tar pitch. The analysis of the elbow is identified as the most challenging aspect and an energy approach is suggested as a solution.
  • #1
albertseng
2
0
Hello,

Uncle have one question.
How to calculate the deflection of the upper flange if the pipe configuration is like the attached picture. How to include the weight of the pipe, can I assume it as the distribution load? And what if there is another load acting downward at the middle of the upper side.

Wollong_House_Pipe_Arrangement.jpg
 
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  • #2
deflection due to weight? Or heat? what? Full of water? Full of coal tar pitch? Half full?

The most difficult part will be the analysis of the elbow.
 
  • #3
Hi Travis_King,

Let say I have an empty pipe. So the deflection is just due to the weight of pipe and and the flange, right?.
 
  • #4
Yep, the weight of the pipe can be considered a distributed load. The flange may be considered a point load.
 
  • #5
An energy approach (Castigliano) may be your best bet here.
 

1. What is L shape pipeline deflection?

L shape pipeline deflection refers to the angular displacement or bending of a pipeline at its joints where two straight sections meet at a right angle. This can be caused by various factors such as soil movement, temperature changes, and external loads.

2. How does L shape pipeline deflection affect the performance of the pipeline?

L shape pipeline deflection can cause significant stress and strain on the pipeline, leading to potential damage and reduced performance. It can also result in leaks, blockages, and reduced flow capacity.

3. What are the common methods for measuring L shape pipeline deflection?

The most common methods for measuring L shape pipeline deflection include visual inspection, laser scanning, and using mechanical or electronic devices such as inclinometers or deflection gauges.

4. How can L shape pipeline deflection be prevented or minimized?

L shape pipeline deflection can be prevented or minimized by using proper construction techniques, selecting appropriate materials, and ensuring proper installation and maintenance. Proper backfilling and compaction of the soil around the pipeline can also help prevent deflection.

5. Can L shape pipeline deflection be repaired?

Yes, L shape pipeline deflection can be repaired by various methods such as excavation and realignment of the affected section, installing support structures or reinforcements, or using trenchless repair techniques such as pipe bursting or lining.

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