（一）、結(jie)構特點及功(gong)能(neng)

QZ系列球型支座(zuo)是由上(shang)支座(zuo)板(ban)(ban)、下支座(zuo)板(ban)(ban)、凸形(xing)(xing)(xing)中(zhong)間(jian)(jian)(jian)板(ban)(ban)及兩塊(kuai)不同形(xing)(xing)(xing)狀的聚四氟乙烯板(ban)(ban)組成(cheng)。下支座(zuo)板(ban)(ban)中(zhong)間(jian)(jian)(jian)為(wei)一凹形(xing)(xing)(xing)球面，同凸形(xing)(xing)(xing)中(zhong)間(jian)(jian)(jian)包相對應，兩者之間(jian)(jian)(jian)有一弧(hu)形(xing)(xing)(xing)四氟板(ban)(ban)，通(tong)過求(qiu)美棉與滑動來滿足梁(liang)端的轉動；上(shang)座(zuo)板(ban)(ban)上(shang)的不銹鋼板(ban)(ban)與中(zhong)間(jian)(jian)(jian)鋼板(ban)(ban)上(shang)的另一四氟板(ban)(ban)組成(cheng)第(di)二滑動面，完(wan)成(cheng)梁(liang)體因(yin)溫差(cha)諸多原因(yin)所(suo)產生的伸縮位移。

QZ球型支座(zuo)(zuo)以傳力可靠，各向轉動性能一(yi)致 轉動靈(ling)活(huo)的(de)特(te)(te)點(dian)，不(bu)僅(jin)具備盆式橡膠支座(zuo)(zuo)承載能力大，水平位移大等特(te)(te)點(dian)，而且能更(geng)好地適應大轉角的(de)需要，適用于寬橋、曲(qu)線橋。由于承壓部件不(bu)使用橡膠件，不(bu)存(cun)在橡膠低溫脆性等影(ying)響，因(yin)此(ci)特(te)(te)別適用于低溫地區。