SELF-RELEASING STRUCTURAL ASSEMBLY

摘要

The end of a transversely extending beam is joined to a wall structure by a self-releasing structural assembly. It has a first portion anchored to the wall. A second, fireproof and non-thermally degradable portion of the assembly sticks out from the wall. The assembly has a thermally degradable member mated to the second portion of the structural assembly. Both portions have slots for accepting beam fasteners. The beam fasteners squeeze the end of the beam, the support bracket seat, and the consumable, thermally degradable member in compression. When exposed to heat or flame the consumable, thermally degradable member softens, releasing the tension in the beam end fasteners, and releasing the compression in the structural sandwich of parts. The end of the beam is then able to translate away from the wall structure. The consumable member can be inspected without removing the beam end from the seat.

主权项

1. A self-releasing structural support assembly, said assembly comprising:
a first member and a second member; said first member being made of a fireproof material; said first member having a first portion and a second portion; said first portion of said first member defining an anchor member by which said first member can be permanently secured to a structural reference datum member, and through which, when installed, a shear load can be passed into the structural reference datum member; said second portion of said first member defining a reaction seat upon which to carry a foot of a spanning member and through which to receive a shear load from the spanning member; said second portion of said first member having a spanning member securement accommodation; said second portion of said first member having a first zone of asperities; said second member being one of
(a) fire degradable; and(b) temperature degradable said second member having a spanning member securement retention fitting that is co-operable with said spanning member securement accommodation; on installation, said second member being in engagement with said first zone of asperities of said first member, and in operation, when so engaged, said second member being deformed to conform to said first zone of asperities. and, as so deformed. secured in a position preventing disengagement of the spanning member; and in operation, when said second member is degraded by either one of (a) fire and (b) heat, the spanning member is insecure from disengagement from the first member.