Lock out user for database structure update

Is there any way to disconnect active users from a live database and lock them out till the database strucure has been updated?

Something like this should work for you.

use <db>

go

--remove all active users from the database

Alter database <db> set SINGLE_USER with ROLLBACK IMMEDIATE

go

--make changes to the database structure on this connection

go

--let users back in

Alter database <db> set MULTI_USER

|||Thank you