摩(mo)擦(ca)滑(hua)(hua)(hua)移隔(ge)(ge)(ge)震(zhen)(zhen)是(shi)開發應(ying)用(yong)較早(zao)的(de)(de)(de)隔(ge)(ge)(ge)振技術之(zhi)一，所用(yong)的(de)(de)(de)摩(mo)擦(ca)材料多為沙石(shi)、石(shi)墨(mo)等廉價材料，標記(ji)經濟且簡單易行。摩(mo)擦(ca)滑(hua)(hua)(hua)移隔(ge)(ge)(ge)震(zhen)(zhen)系(xi)(xi)統(tong)通常有隔(ge)(ge)(ge)離地震(zhen)(zhen)作用(yong)的(de)(de)(de)摩(mo)擦(ca)滑(hua)(hua)(hua)動機構(gou)和限位(wei)(wei)復位(wei)(wei)的(de)(de)(de)阻(zu)尼向心(xin)機構(gou)組成，多為平面滑(hua)(hua)(hua)移隔(ge)(ge)(ge)震(zhen)(zhen)系(xi)(xi)統(tong)。該(gai)系(xi)(xi)統(tong)不(bu)能(neng)自(zi)動復位(wei)(wei)，一般需(xu)要另外加設復位(wei)(wei)裝(zhuang)置(zhi)(zhi)，且滑(hua)(hua)(hua)動性(xing)能(neng)離散性(xing)大(da)、不(bu)易控(kong)制(zhi)，滑(hua)(hua)(hua)移量過大(da)可能(neng)導致穿越隔(ge)(ge)(ge)震(zhen)(zhen)層的(de)(de)(de)非結(jie)構(gou)構(gou)件破壞，甚至可能(neng)發生滑(hua)(hua)(hua)移失(shi)穩，這極大(da)地阻(zu)礙了(le)滑(hua)(hua)(hua)移隔(ge)(ge)(ge)震(zhen)(zhen)的(de)(de)(de)發展。為了(le)解決平面滑(hua)(hua)(hua)移系(xi)(xi)統(tong)不(bu)能(neng)自(zi)動復位(wei)(wei)問題(ti)，Zayas等于1985年在美國加州(zhou)大(da)學伯克(ke)利分(fen)校研發了(le)摩(mo)擦(ca)擺隔(ge)(ge)(ge)震(zhen)(zhen)裝(zhuang)置(zhi)(zhi)，稱之(zhi)為摩(mo)擦(ca)擺系(xi)(xi)統(tong)/支座(Friction Pendilum System/Bearing,簡稱FPS/FPB)。該(gai)裝(zhuang)置(zhi)(zhi)不(bu)僅(jin)具(ju)有平面滑(hua)(hua)(hua)移隔(ge)(ge)(ge)震(zhen)(zhen)裝(zhuang)置(zhi)(zhi)的(de)(de)(de)對地震(zhen)(zhen)激勵(li)頻(pin)率范圍的(de)(de)(de)低敏感性(xing)和高穩定(ding)性(xing)，特有的(de)(de)(de)圓弧滑(hua)(hua)(hua)動面還使其(qi)具(ju)有復位(wei)(wei)功能(neng)，無需(xu)附設阻(zu)尼向心(xin)機構(gou)，故而在實際應(ying)用(yong)中更(geng)為簡便，且增加了(le)隔(ge)(ge)(ge)震(zhen)(zhen)裝(zhuang)置(zhi)(zhi)的(de)(de)(de)可靠度。
摩(mo)擦(ca)(ca)擺隔(ge)震支(zhi)(zhi)座(zuo)(zuo)是將傳(chuan)統的平(ping)(ping)面(mian)(mian)(mian)滑(hua)(hua)(hua)(hua)(hua)(hua)移隔(ge)震裝置的摩(mo)擦(ca)(ca)滑(hua)(hua)(hua)(hua)(hua)(hua)移面(mian)(mian)(mian)由平(ping)(ping)面(mian)(mian)(mian)改為(wei)球面(mian)(mian)(mian)，從而(er)可依(yi)靠自身(shen)重力自動(dong)(dong)(dong)(dong)回復。該支(zhi)(zhi)座(zuo)(zuo)主要由上、下支(zhi)(zhi)座(zuo)(zuo)板和一個鉸(jiao)接(jie)滑(hua)(hua)(hua)(hua)(hua)(hua)塊組成。摩(mo)擦(ca)(ca)擺隔(ge)震支(zhi)(zhi)座(zuo)(zuo)嵌在滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)容(rong)腔中(zhong)的鉸(jiao)接(jie)滑(hua)(hua)(hua)(hua)(hua)(hua)塊與(yu)滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)面(mian)(mian)(mian)具有相同的曲(qu)率半徑(jing)，可與(yu)滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)面(mian)(mian)(mian)完全貼合，并使(shi)(shi)上支(zhi)(zhi)座(zuo)(zuo)在支(zhi)(zhi)座(zuo)(zuo)滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)時(shi)始終保持水(shui)平(ping)(ping)。滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)面(mian)(mian)(mian)上涂有低摩(mo)擦(ca)(ca)材料，如聚四氟(fu)乙(yi)烯（特(te)氟(fu)龍）等，可在滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)過(guo)程中(zhong)耗散能量。當滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)界面(mian)(mian)(mian)受到(dao)的地(di)(di)震作用超過(guo)靜摩(mo)擦(ca)(ca)力時(shi)，地(di)(di)面(mian)(mian)(mian)水(shui)平(ping)(ping)運動(dong)(dong)(dong)(dong)會促使(shi)(shi)滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)在其(qi)圓弧面(mian)(mian)(mian)內滑(hua)(hua)(hua)(hua)(hua)(hua)動(dong)(dong)(dong)(dong)，從而(er)迫使(shi)(shi)上部結構輕微(wei)抬高(gao)，發生(sheng)單(dan)擺運動(dong)(dong)(dong)(dong)。然后，支(zhi)(zhi)座(zuo)(zuo)會在自身(shen)受到(dao)的豎向荷(he)載作用下自動(dong)(dong)(dong)(dong)回復。
摩(mo)擦(ca)擺(bai)隔(ge)震(zhen)(zhen)(zhen)支(zhi)座(zuo)的(de)(de)水平(ping)力(li)為滑動(dong)面摩(mo)擦(ca)力(li)和上(shang)(shang)部(bu)結構(gou)沿滑道上(shang)(shang)升產生的(de)(de)恢復力(li)的(de)(de)合力(li)，而提(ti)供(gong)的(de)(de)恢復力(li)使支(zhi)座(zuo)能依靠其承受(shou)的(de)(de)重(zhong)(zhong)力(li)自(zi)動(dong)往(wang)中心(xin)位置(zhi)回復，使地震(zhen)(zhen)(zhen)響應得到(dao)控制，并且該(gai)(gai)支(zhi)座(zuo)的(de)(de)剛度中心(xin)有自(zi)動(dong)與隔(ge)震(zhen)(zhen)(zhen)結構(gou)的(de)(de)質心(xin)重(zhong)(zhong)合的(de)(de)趨勢，因(yin)而能在更大 程度上(shang)(shang)消除結構(gou)的(de)(de)扭轉運動(dong)。摩(mo)擦(ca)擺(bai)隔(ge)震(zhen)(zhen)(zhen)支(zhi)座(zuo)的(de)(de)周期、豎向承載力(li)、阻尼比、側重(zhong)(zhong)位移(yi)和抗拉力(li)等指標可以進行單獨控制，該(gai)(gai)特(te)性十分(fen)便于設計(ji)(ji)人員對隔(ge)震(zhen)(zhen)(zhen)系(xi)統(tong)進行優(you)化設計(ji)(ji)。
