摩(mo)(mo)擦滑(hua)(hua)移隔(ge)(ge)(ge)震是開發應用(yong)較早的(de)隔(ge)(ge)(ge)振技術之一，所(suo)用(yong)的(de)摩(mo)(mo)擦材料(liao)多為(wei)沙(sha)石(shi)、石(shi)墨(mo)等廉價材料(liao)，標記經濟(ji)且簡(jian)單易(yi)行。摩(mo)(mo)擦滑(hua)(hua)移隔(ge)(ge)(ge)震系(xi)統通常(chang)有隔(ge)(ge)(ge)離(li)地震作用(yong)的(de)摩(mo)(mo)擦滑(hua)(hua)動(dong)機(ji)構(gou)(gou)和限(xian)位(wei)復位(wei)的(de)阻(zu)尼向心(xin)機(ji)構(gou)(gou)組成，多為(wei)平(ping)面滑(hua)(hua)移隔(ge)(ge)(ge)震系(xi)統。該系(xi)統不(bu)(bu)能(neng)(neng)自(zi)動(dong)復位(wei)，一般(ban)需要另外加設復位(wei)裝置(zhi)(zhi)，且滑(hua)(hua)動(dong)性(xing)能(neng)(neng)離(li)散性(xing)大(da)、不(bu)(bu)易(yi)控制(zhi)，滑(hua)(hua)移量過大(da)可能(neng)(neng)導致(zhi)穿越(yue)隔(ge)(ge)(ge)震層的(de)非(fei)結構(gou)(gou)構(gou)(gou)件破壞，甚至可能(neng)(neng)發生滑(hua)(hua)移失(shi)穩，這極大(da)地阻(zu)礙了(le)滑(hua)(hua)移隔(ge)(ge)(ge)震的(de)發展(zhan)。為(wei)了(le)解(jie)決平(ping)面滑(hua)(hua)移系(xi)統不(bu)(bu)能(neng)(neng)自(zi)動(dong)復位(wei)問題，Zayas等于1985年在美國加州大(da)學伯克(ke)利(li)分校研發了(le)摩(mo)(mo)擦擺隔(ge)(ge)(ge)震裝置(zhi)(zhi)，稱(cheng)之為(wei)摩(mo)(mo)擦擺系(xi)統/支座(Friction Pendilum System/Bearing,簡(jian)稱(cheng)FPS/FPB)。該裝置(zhi)(zhi)不(bu)(bu)僅具(ju)有平(ping)面滑(hua)(hua)移隔(ge)(ge)(ge)震裝置(zhi)(zhi)的(de)對地震激勵頻率(lv)范圍(wei)的(de)低敏感性(xing)和高穩定性(xing)，特有的(de)圓(yuan)弧滑(hua)(hua)動(dong)面還使其具(ju)有復位(wei)功(gong)能(neng)(neng)，無(wu)需附設阻(zu)尼向心(xin)機(ji)構(gou)(gou)，故而在實際應用(yong)中更為(wei)簡(jian)便，且增加了(le)隔(ge)(ge)(ge)震裝置(zhi)(zhi)的(de)可靠度。
摩擦(ca)擺隔震(zhen)(zhen)支(zhi)座(zuo)是(shi)將(jiang)傳統的平(ping)面(mian)(mian)(mian)(mian)滑(hua)(hua)移隔震(zhen)(zhen)裝(zhuang)置的摩擦(ca)滑(hua)(hua)移面(mian)(mian)(mian)(mian)由(you)平(ping)面(mian)(mian)(mian)(mian)改為球(qiu)面(mian)(mian)(mian)(mian)，從(cong)(cong)而可依靠自身重力(li)自動(dong)(dong)(dong)(dong)回(hui)復。該(gai)支(zhi)座(zuo)主(zhu)要由(you)上(shang)、下(xia)支(zhi)座(zuo)板和一個鉸接滑(hua)(hua)塊(kuai)(kuai)組成。摩擦(ca)擺隔震(zhen)(zhen)支(zhi)座(zuo)嵌在(zai)滑(hua)(hua)動(dong)(dong)(dong)(dong)容(rong)腔(qiang)中(zhong)的鉸接滑(hua)(hua)塊(kuai)(kuai)與滑(hua)(hua)動(dong)(dong)(dong)(dong)面(mian)(mian)(mian)(mian)具(ju)有相同的曲率半徑，可與滑(hua)(hua)動(dong)(dong)(dong)(dong)面(mian)(mian)(mian)(mian)完全貼合，并(bing)使(shi)上(shang)支(zhi)座(zuo)在(zai)支(zhi)座(zuo)滑(hua)(hua)動(dong)(dong)(dong)(dong)時(shi)(shi)始終(zhong)保持水平(ping)。滑(hua)(hua)動(dong)(dong)(dong)(dong)面(mian)(mian)(mian)(mian)上(shang)涂有低摩擦(ca)材(cai)料，如聚四氟(fu)乙烯(xi)（特氟(fu)龍）等，可在(zai)滑(hua)(hua)動(dong)(dong)(dong)(dong)過程中(zhong)耗散(san)能量。當滑(hua)(hua)動(dong)(dong)(dong)(dong)界(jie)面(mian)(mian)(mian)(mian)受到(dao)的地震(zhen)(zhen)作(zuo)用(yong)超(chao)過靜摩擦(ca)力(li)時(shi)(shi)，地面(mian)(mian)(mian)(mian)水平(ping)運(yun)動(dong)(dong)(dong)(dong)會(hui)促使(shi)滑(hua)(hua)動(dong)(dong)(dong)(dong)在(zai)其圓弧面(mian)(mian)(mian)(mian)內滑(hua)(hua)動(dong)(dong)(dong)(dong)，從(cong)(cong)而迫使(shi)上(shang)部結(jie)構輕微抬高，發生單擺運(yun)動(dong)(dong)(dong)(dong)。然后，支(zhi)座(zuo)會(hui)在(zai)自身受到(dao)的豎向荷載作(zuo)用(yong)下(xia)自動(dong)(dong)(dong)(dong)回(hui)復。
摩(mo)(mo)擦(ca)擺隔震(zhen)支(zhi)座(zuo)(zuo)的(de)水平(ping)力為滑動面摩(mo)(mo)擦(ca)力和(he)上(shang)部結(jie)構(gou)沿滑道上(shang)升(sheng)產生(sheng)的(de)恢(hui)復(fu)力的(de)合力，而(er)提(ti)供(gong)的(de)恢(hui)復(fu)力使支(zhi)座(zuo)(zuo)能(neng)依靠其承(cheng)受的(de)重力自(zi)動往中心(xin)(xin)位置回復(fu)，使地震(zhen)響(xiang)應得到控制，并且該支(zhi)座(zuo)(zuo)的(de)剛(gang)度(du)(du)中心(xin)(xin)有自(zi)動與(yu)隔震(zhen)結(jie)構(gou)的(de)質心(xin)(xin)重合的(de)趨(qu)勢，因而(er)能(neng)在更大 程(cheng)度(du)(du)上(shang)消除結(jie)構(gou)的(de)扭轉運動。摩(mo)(mo)擦(ca)擺隔震(zhen)支(zhi)座(zuo)(zuo)的(de)周期、豎向承(cheng)載力、阻尼比、側重位移和(he)抗拉力等指標可以進(jin)行(xing)單獨控制，該特(te)性十分便于(yu)設計人(ren)員對隔震(zhen)系統進(jin)行(xing)優(you)化設計。
