（一(yi)）、結(jie)構特點及功能

QZ系列球(qiu)型支(zhi)(zhi)座(zuo)是由上(shang)支(zhi)(zhi)座(zuo)板(ban)(ban)、下支(zhi)(zhi)座(zuo)板(ban)(ban)、凸形(xing)(xing)中(zhong)(zhong)間板(ban)(ban)及兩塊不同(tong)(tong)形(xing)(xing)狀的聚四氟乙烯板(ban)(ban)組成(cheng)。下支(zhi)(zhi)座(zuo)板(ban)(ban)中(zhong)(zhong)間為一凹形(xing)(xing)球(qiu)面，同(tong)(tong)凸形(xing)(xing)中(zhong)(zhong)間包相對應，兩者(zhe)之間有一弧形(xing)(xing)四氟板(ban)(ban)，通過(guo)求美棉與滑動(dong)來滿(man)足(zu)梁(liang)端的轉動(dong)；上(shang)座(zuo)板(ban)(ban)上(shang)的不銹鋼(gang)板(ban)(ban)與中(zhong)(zhong)間鋼(gang)板(ban)(ban)上(shang)的另一四氟板(ban)(ban)組成(cheng)第二滑動(dong)面，完成(cheng)梁(liang)體(ti)因溫差(cha)諸多原因所(suo)產生(sheng)的伸縮位移。

QZ球型支座以(yi)傳力(li)可靠，各向轉(zhuan)動性能(neng)(neng)一致 轉(zhuan)動靈(ling)活的特(te)點，不(bu)(bu)僅具備盆式橡(xiang)(xiang)膠(jiao)支座承載能(neng)(neng)力(li)大(da)(da)，水平(ping)位移大(da)(da)等(deng)特(te)點，而且(qie)能(neng)(neng)更(geng)好地適應大(da)(da)轉(zhuan)角(jiao)的需要，適用(yong)于(yu)寬橋(qiao)、曲線橋(qiao)。由于(yu)承壓部件不(bu)(bu)使用(yong)橡(xiang)(xiang)膠(jiao)件，不(bu)(bu)存在橡(xiang)(xiang)膠(jiao)低溫(wen)脆性等(deng)影響，因此特(te)別適用(yong)于(yu)低溫(wen)地區。