This answer largely duplicates my answer to a similar question:
The short answer is "No, it's likely that there is nothing you can do to hold building management liable for the theft of your bike."
I am neither a lawyer nor a resident of Australia where it seems this happened, so this longer answer is to the best of my layman's understanding and you should do some more research to make sure it applies.
The key legal issue is the lack of "Bailment". For a bailment to be created the property in question has to be delivered to the bailee (a representative of Building Management) by you (the bailor), and the bailee must have both possession and control of the property. Once a bailment has been created the bailee must take reasonable steps to care for the property that has been delivered but does not normally insure the bailor against all loss of or to the property while it is in the bailee's possession unless he expressly undertakes that obligation.
What this means is that the bailee is not liable for any and all damages or loss of the property while the property is in his care; he is only liable if the bailee can be proved negligent in caring for the property. Negligence can be proved if you can show that a reasonable person in possession and control of your property would not have taken whatever action led to the loss.
So, you rode up to a rack, chained up your bike and went your way. There was no transfer of possession or control from you to Building Management. The Building Management couldn't move your bike (at least not under normal situations) and no individual implied in any way that they would look after or protect it. Even if it was obvious to a reasonable individual that the rack was poorly installed or easily circumvented, the bailment was not created in the first place, so Building Management has no duty whatsoever to protect your bike from theft or loss.