if there is a rite of access and they are causing an obstruction then you have a possible way from there.
you could also look into the access for emergency vehicles and look down that route.
What is the obstruction is it fencing materials?
I would try and make the point that you cant get something out rather than in.
If they are building for a year there will need to be planning you could look at the planning conditions and make sure they are compliant and if not contact the planning officer.
https://publicaccess.glasgow.gov.uk/...pe=Application
Good luck.