design; spectra; intensity; attenuation; relationship; attenuation; relationship; of; ground; motion; dynamical; amplification; factor; control; period; Null; CLC; Number:P315.9; Document; ID:A; Article; ID:1000-9116(2001)06-0705-06; In; recent; years; more; and; more; studies; are; focused; on; the; performance; in; seismic; design; instead; of; the; strength; of; structures.; People; have; realized; that; the; structure; deformation; (displacement); can; describe; the; damage; more; properly; and; directly; than; the; strength; (force).; The; displacement; design; spectra; need; to; be; constructed; within; more; wide; range; of; the; period; and; the; damping; for; the; displacement-based; seismic; design.……;