Aluminium Dome Roof-Strut crack issue
Aluminium Dome Roof-Strut crack issue
(OP)
Hi all,
We are in the process of erecting a 75 meter aluminium dome roof. We are doing the ground assembly using Chain pulley blocks hanged in Tripods. As we move further to the periphery we find that, while lifting the structure using tripods the struts (beams) getting bent and even cracked at few locations.
Anyone could you please explain what would be the cause for the crack and bent.?
Awaiting responses and thanks in advance
We are in the process of erecting a 75 meter aluminium dome roof. We are doing the ground assembly using Chain pulley blocks hanged in Tripods. As we move further to the periphery we find that, while lifting the structure using tripods the struts (beams) getting bent and even cracked at few locations.
Anyone could you please explain what would be the cause for the crack and bent.?
Awaiting responses and thanks in advance
RE: Aluminium Dome Roof-Strut crack issue
Apparently the picture depicts web buckling of the alu. profile and experienced high load due to lifting operation. Probably , the pulleys did not operate simultaneously in sequence .. The no. of Chain pulley tripods and locations should be studied by an experienced engineer and lifting shall be simultaneously ( without lifting one of the point to final position).
When you write ( vacono dome lifting ) and search the web , one of the outcomes,
https://www.youtube.com/watch?v=3oqzJC2Wz-k
RE: Aluminium Dome Roof-Strut crack issue
What does the construction plan say?
Why are you not lifting from the top of the connecting plates? why not have a beam under the flat connecting plates and lift on both sides?
This seems to indicate a poor appreciation of construction loads from the strap and you need to find a way to create only vertical lift forces and not the crushing loads that the strap is providing.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Aluminium Dome Roof-Strut crack issue