@kennyj ,Ken, Did a search for a replacement tripod mount for your Coolpix L810, link below shows replacement mount and does look replaceable, held by 1 screw by the looks of the part. Good luck.
I hope this helped you out, if so let me know by pressing the helpful button.
http://www.ebay.ca/itm/Nikon-L810-Tripod-Holder-Part-Replacement-Repair-Part-/361294840944?hash=item541ed9c470:g:Jl4AAOSw-W5U1UsJ