摩(mo)(mo)擦(ca)滑(hua)(hua)移(yi)隔(ge)(ge)震(zhen)是開發應(ying)用較早的(de)(de)(de)隔(ge)(ge)振技術之一(yi)，所(suo)用的(de)(de)(de)摩(mo)(mo)擦(ca)材(cai)料多為(wei)(wei)沙(sha)石、石墨(mo)等廉(lian)價材(cai)料，標(biao)記經濟(ji)且(qie)簡(jian)(jian)單易行。摩(mo)(mo)擦(ca)滑(hua)(hua)移(yi)隔(ge)(ge)震(zhen)系(xi)(xi)統通(tong)常有(you)(you)隔(ge)(ge)離(li)(li)地(di)(di)震(zhen)作(zuo)用的(de)(de)(de)摩(mo)(mo)擦(ca)滑(hua)(hua)動(dong)機(ji)構(gou)(gou)和限(xian)位復位的(de)(de)(de)阻(zu)(zu)尼向(xiang)心(xin)機(ji)構(gou)(gou)組成(cheng)，多為(wei)(wei)平(ping)(ping)(ping)面(mian)滑(hua)(hua)移(yi)隔(ge)(ge)震(zhen)系(xi)(xi)統。該系(xi)(xi)統不能(neng)(neng)自動(dong)復位，一(yi)般需要另外加(jia)設復位裝置(zhi)(zhi)，且(qie)滑(hua)(hua)動(dong)性能(neng)(neng)離(li)(li)散性大、不易控制(zhi)，滑(hua)(hua)移(yi)量過大可(ke)(ke)能(neng)(neng)導致穿越隔(ge)(ge)震(zhen)層的(de)(de)(de)非(fei)結構(gou)(gou)構(gou)(gou)件破(po)壞，甚至可(ke)(ke)能(neng)(neng)發生滑(hua)(hua)移(yi)失穩(wen)，這極大地(di)(di)阻(zu)(zu)礙了滑(hua)(hua)移(yi)隔(ge)(ge)震(zhen)的(de)(de)(de)發展。為(wei)(wei)了解(jie)決平(ping)(ping)(ping)面(mian)滑(hua)(hua)移(yi)系(xi)(xi)統不能(neng)(neng)自動(dong)復位問題，Zayas等于1985年(nian)在(zai)美(mei)國加(jia)州大學伯克(ke)利分(fen)校研(yan)發了摩(mo)(mo)擦(ca)擺隔(ge)(ge)震(zhen)裝置(zhi)(zhi)，稱之為(wei)(wei)摩(mo)(mo)擦(ca)擺系(xi)(xi)統/支座(Friction Pendilum System/Bearing,簡(jian)(jian)稱FPS/FPB)。該裝置(zhi)(zhi)不僅具(ju)有(you)(you)平(ping)(ping)(ping)面(mian)滑(hua)(hua)移(yi)隔(ge)(ge)震(zhen)裝置(zhi)(zhi)的(de)(de)(de)對地(di)(di)震(zhen)激(ji)勵頻率(lv)范圍的(de)(de)(de)低(di)敏感性和高穩(wen)定性，特有(you)(you)的(de)(de)(de)圓弧滑(hua)(hua)動(dong)面(mian)還使其具(ju)有(you)(you)復位功能(neng)(neng)，無需附設阻(zu)(zu)尼向(xiang)心(xin)機(ji)構(gou)(gou)，故而在(zai)實際應(ying)用中更為(wei)(wei)簡(jian)(jian)便，且(qie)增加(jia)了隔(ge)(ge)震(zhen)裝置(zhi)(zhi)的(de)(de)(de)可(ke)(ke)靠度。
摩(mo)(mo)擦(ca)(ca)擺隔(ge)震(zhen)支(zhi)(zhi)座是將傳統的(de)(de)(de)平(ping)(ping)面(mian)(mian)(mian)(mian)滑(hua)(hua)(hua)(hua)(hua)(hua)移(yi)隔(ge)震(zhen)裝置的(de)(de)(de)摩(mo)(mo)擦(ca)(ca)滑(hua)(hua)(hua)(hua)(hua)(hua)移(yi)面(mian)(mian)(mian)(mian)由平(ping)(ping)面(mian)(mian)(mian)(mian)改(gai)為(wei)球面(mian)(mian)(mian)(mian)，從而(er)可(ke)依(yi)靠(kao)自(zi)(zi)身(shen)重力(li)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)回復。該支(zhi)(zhi)座主要由上、下支(zhi)(zhi)座板和一個鉸接滑(hua)(hua)(hua)(hua)(hua)(hua)塊組(zu)成。摩(mo)(mo)擦(ca)(ca)擺隔(ge)震(zhen)支(zhi)(zhi)座嵌在(zai)滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)(dong)容腔中(zhong)的(de)(de)(de)鉸接滑(hua)(hua)(hua)(hua)(hua)(hua)塊與(yu)滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)(dong)面(mian)(mian)(mian)(mian)具有相同的(de)(de)(de)曲率(lv)半(ban)徑，可(ke)與(yu)滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)(dong)面(mian)(mian)(mian)(mian)完全貼(tie)合，并使上支(zhi)(zhi)座在(zai)支(zhi)(zhi)座滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)(dong)時始終保(bao)持水平(ping)(ping)。滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)(dong)面(mian)(mian)(mian)(mian)上涂(tu)有低(di)摩(mo)(mo)擦(ca)(ca)材料，如(ru)聚(ju)四(si)氟(fu)乙烯（特氟(fu)龍(long)）等，可(ke)在(zai)滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)(dong)過(guo)程(cheng)中(zhong)耗散能量。當滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)(dong)界面(mian)(mian)(mian)(mian)受到(dao)的(de)(de)(de)地震(zhen)作用超(chao)過(guo)靜摩(mo)(mo)擦(ca)(ca)力(li)時，地面(mian)(mian)(mian)(mian)水平(ping)(ping)運動(dong)(dong)(dong)(dong)(dong)會促使滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)(dong)在(zai)其(qi)圓弧面(mian)(mian)(mian)(mian)內滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)(dong)，從而(er)迫(po)使上部結構輕微(wei)抬高，發生單擺運動(dong)(dong)(dong)(dong)(dong)。然后，支(zhi)(zhi)座會在(zai)自(zi)(zi)身(shen)受到(dao)的(de)(de)(de)豎向荷載作用下自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)回復。
摩(mo)擦(ca)擺(bai)隔(ge)震支(zhi)座(zuo)的(de)(de)(de)水平力(li)為滑動(dong)(dong)面摩(mo)擦(ca)力(li)和上部結(jie)構沿滑道上升產生的(de)(de)(de)恢復(fu)(fu)力(li)的(de)(de)(de)合(he)(he)力(li)，而(er)提供的(de)(de)(de)恢復(fu)(fu)力(li)使支(zhi)座(zuo)能依靠其承(cheng)受的(de)(de)(de)重力(li)自動(dong)(dong)往中心位置回復(fu)(fu)，使地(di)震響應得(de)到控制，并且該支(zhi)座(zuo)的(de)(de)(de)剛度中心有自動(dong)(dong)與(yu)隔(ge)震結(jie)構的(de)(de)(de)質心重合(he)(he)的(de)(de)(de)趨勢，因而(er)能在(zai)更大 程度上消除(chu)結(jie)構的(de)(de)(de)扭轉運動(dong)(dong)。摩(mo)擦(ca)擺(bai)隔(ge)震支(zhi)座(zuo)的(de)(de)(de)周期、豎向承(cheng)載(zai)力(li)、阻尼比(bi)、側(ce)重位移和抗拉力(li)等指(zhi)標可以進行(xing)單獨控制，該特性十分便(bian)于設計(ji)人員對隔(ge)震系統進行(xing)優化設計(ji)。
