（一）、結(jie)構特(te)點及功能(neng)

QZ系列球(qiu)(qiu)型支(zhi)座(zuo)是(shi)由上(shang)支(zhi)座(zuo)板(ban)(ban)(ban)、下支(zhi)座(zuo)板(ban)(ban)(ban)、凸形(xing)(xing)中間(jian)板(ban)(ban)(ban)及兩(liang)(liang)塊不同(tong)(tong)形(xing)(xing)狀的(de)(de)聚四(si)氟乙烯板(ban)(ban)(ban)組成(cheng)(cheng)。下支(zhi)座(zuo)板(ban)(ban)(ban)中間(jian)為一凹(ao)形(xing)(xing)球(qiu)(qiu)面，同(tong)(tong)凸形(xing)(xing)中間(jian)包(bao)相對應(ying)，兩(liang)(liang)者(zhe)之間(jian)有一弧形(xing)(xing)四(si)氟板(ban)(ban)(ban)，通過求(qiu)美棉(mian)與滑動來滿(man)足梁端的(de)(de)轉動；上(shang)座(zuo)板(ban)(ban)(ban)上(shang)的(de)(de)不銹鋼板(ban)(ban)(ban)與中間(jian)鋼板(ban)(ban)(ban)上(shang)的(de)(de)另一四(si)氟板(ban)(ban)(ban)組成(cheng)(cheng)第二滑動面，完成(cheng)(cheng)梁體因溫差諸多原因所(suo)產生的(de)(de)伸縮位(wei)移。

QZ球型支座以傳力(li)可靠，各(ge)向轉(zhuan)(zhuan)動性能(neng)一致 轉(zhuan)(zhuan)動靈活的特(te)(te)(te)點(dian)，不(bu)(bu)僅(jin)具備盆式(shi)橡膠(jiao)(jiao)支座承載能(neng)力(li)大，水平位移(yi)大等特(te)(te)(te)點(dian)，而且(qie)能(neng)更好地適應大轉(zhuan)(zhuan)角的需(xu)要，適用于(yu)寬橋、曲線(xian)橋。由于(yu)承壓部件不(bu)(bu)使用橡膠(jiao)(jiao)件，不(bu)(bu)存在橡膠(jiao)(jiao)低(di)(di)溫脆性等影響(xiang)，因此特(te)(te)(te)別(bie)適用于(yu)低(di)(di)溫地區。