| 摘要 |
The end of a transversely extending beam mates 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 sticks out from the wall. It defines a seat for receiving vertical shear loads from the beam. The assembly also includes a thermally degradable member keyed to the second portion. Both portions have slots for beam end 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 parts. The end of the beam can then move away from the wall. The consumable member can be inspected, replaced, and the beam fasteners re-tensioned, without unseating the beam end.
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