（一）、結構特(te)點(dian)及功(gong)能

QZ系列球型(xing)支(zhi)座(zuo)(zuo)(zuo)是由上支(zhi)座(zuo)(zuo)(zuo)板(ban)(ban)(ban)(ban)(ban)、下(xia)(xia)支(zhi)座(zuo)(zuo)(zuo)板(ban)(ban)(ban)(ban)(ban)、凸(tu)(tu)形(xing)中(zhong)(zhong)間板(ban)(ban)(ban)(ban)(ban)及兩塊不(bu)同形(xing)狀的(de)(de)(de)聚四(si)氟乙烯板(ban)(ban)(ban)(ban)(ban)組成(cheng)。下(xia)(xia)支(zhi)座(zuo)(zuo)(zuo)板(ban)(ban)(ban)(ban)(ban)中(zhong)(zhong)間為一凹形(xing)球面，同凸(tu)(tu)形(xing)中(zhong)(zhong)間包相對應，兩者(zhe)之間有一弧形(xing)四(si)氟板(ban)(ban)(ban)(ban)(ban)，通過求美(mei)棉與滑(hua)動來滿足梁(liang)端的(de)(de)(de)轉動；上座(zuo)(zuo)(zuo)板(ban)(ban)(ban)(ban)(ban)上的(de)(de)(de)不(bu)銹鋼板(ban)(ban)(ban)(ban)(ban)與中(zhong)(zhong)間鋼板(ban)(ban)(ban)(ban)(ban)上的(de)(de)(de)另(ling)一四(si)氟板(ban)(ban)(ban)(ban)(ban)組成(cheng)第(di)二滑(hua)動面，完成(cheng)梁(liang)體因溫差諸(zhu)多(duo)原因所產生(sheng)的(de)(de)(de)伸縮位(wei)移(yi)。

QZ球型(xing)支座(zuo)以傳力(li)(li)可靠(kao)，各向(xiang)轉動性能一致 轉動靈活的特點，不(bu)僅具備(bei)盆(pen)式橡膠(jiao)支座(zuo)承載能力(li)(li)大(da)，水平位移大(da)等(deng)特點，而且(qie)能更好地適(shi)應大(da)轉角的需要，適(shi)用于寬橋、曲線(xian)橋。由于承壓部件(jian)不(bu)使用橡膠(jiao)件(jian)，不(bu)存(cun)在橡膠(jiao)低溫脆性等(deng)影(ying)響，因此特別適(shi)用于低溫地區。