（一）、結構特點及功能

QZ系(xi)列球(qiu)型支(zhi)(zhi)(zhi)(zhi)座(zuo)是由上(shang)支(zhi)(zhi)(zhi)(zhi)座(zuo)板(ban)(ban)(ban)、下支(zhi)(zhi)(zhi)(zhi)座(zuo)板(ban)(ban)(ban)、凸形(xing)中(zhong)間板(ban)(ban)(ban)及兩塊不同(tong)形(xing)狀的(de)(de)聚四氟(fu)(fu)乙烯板(ban)(ban)(ban)組成(cheng)。下支(zhi)(zhi)(zhi)(zhi)座(zuo)板(ban)(ban)(ban)中(zhong)間為一(yi)(yi)凹形(xing)球(qiu)面，同(tong)凸形(xing)中(zhong)間包(bao)相對應，兩者(zhe)之間有一(yi)(yi)弧形(xing)四氟(fu)(fu)板(ban)(ban)(ban)，通過求美棉(mian)與滑動(dong)(dong)來滿足梁端的(de)(de)轉動(dong)(dong)；上(shang)座(zuo)板(ban)(ban)(ban)上(shang)的(de)(de)不銹鋼板(ban)(ban)(ban)與中(zhong)間鋼板(ban)(ban)(ban)上(shang)的(de)(de)另(ling)一(yi)(yi)四氟(fu)(fu)板(ban)(ban)(ban)組成(cheng)第二滑動(dong)(dong)面，完成(cheng)梁體因溫差諸(zhu)多(duo)原因所產(chan)生的(de)(de)伸縮位移(yi)。

QZ球型支座以傳力可靠，各向轉動性(xing)能一致 轉動靈活(huo)的(de)特(te)點，不(bu)僅具備(bei)盆式橡(xiang)膠(jiao)(jiao)支座承載(zai)能力大(da)，水平位(wei)移大(da)等特(te)點，而且能更好(hao)地(di)適應大(da)轉角的(de)需要，適用(yong)于(yu)寬(kuan)橋、曲線(xian)橋。由(you)于(yu)承壓部件不(bu)使用(yong)橡(xiang)膠(jiao)(jiao)件，不(bu)存(cun)在橡(xiang)膠(jiao)(jiao)低溫脆性(xing)等影響，因此(ci)特(te)別適用(yong)于(yu)低溫地(di)區。