DESIGN PROCEDURE OF DOUBLE-LAYER SPACE TRUSSES AGAINST THE VERTICAL SEISMIC MOTION USING FORCE LIMITING DEVICES

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Abstract
The force 】 imiting devices in the double-layer space trusses net only prevent the member to buckle but also absorb the considerable amount of the seismic energy ． This paper deals With the seismic design procedure of double ・ 1ayer space trusses using force limiting devices ， The proposed proceduTe is based on the eneTgy ba】 ance between the seismic energy and the energy absorbed in the force limiting devices ． The designed space truss is dynamically analyzed and the best perforrnance under the vertical seismic motion can be successfully obtained ． Klayω ords ： space truss ， ／ fbrce limiting deviee ， seismic design ， vertical seisnzic motion ． dynα mic analysis