（一）、結構(gou)特(te)點(dian)及功能

QZ系列(lie)球型支(zhi)(zhi)(zhi)座(zuo)是由上支(zhi)(zhi)(zhi)座(zuo)板(ban)(ban)(ban)(ban)、下支(zhi)(zhi)(zhi)座(zuo)板(ban)(ban)(ban)(ban)、凸形中間(jian)(jian)板(ban)(ban)(ban)(ban)及兩塊不同(tong)形狀(zhuang)的(de)聚四(si)氟乙(yi)烯板(ban)(ban)(ban)(ban)組成(cheng)。下支(zhi)(zhi)(zhi)座(zuo)板(ban)(ban)(ban)(ban)中間(jian)(jian)為一(yi)凹(ao)形球面，同(tong)凸形中間(jian)(jian)包相對應，兩者之間(jian)(jian)有一(yi)弧形四(si)氟板(ban)(ban)(ban)(ban)，通過(guo)求美棉與滑(hua)(hua)動來滿(man)足梁端的(de)轉動；上座(zuo)板(ban)(ban)(ban)(ban)上的(de)不銹鋼板(ban)(ban)(ban)(ban)與中間(jian)(jian)鋼板(ban)(ban)(ban)(ban)上的(de)另一(yi)四(si)氟板(ban)(ban)(ban)(ban)組成(cheng)第二滑(hua)(hua)動面，完(wan)成(cheng)梁體因(yin)溫差諸(zhu)多原因(yin)所產生的(de)伸縮位移(yi)。

QZ球型支座以傳力可靠，各向轉動性能一致 轉動靈活的(de)特(te)點，不(bu)僅(jin)具備盆式橡(xiang)膠支座承(cheng)載能力大，水平位移大等特(te)點，而且(qie)能更(geng)好地(di)適(shi)應大轉角的(de)需要，適(shi)用于(yu)寬橋(qiao)、曲線橋(qiao)。由于(yu)承(cheng)壓部件不(bu)使用橡(xiang)膠件，不(bu)存(cun)在橡(xiang)膠低(di)溫(wen)脆性等影響，因此特(te)別適(shi)用于(yu)低(di)溫(wen)地(di)區。