（一(yi)）、結構特點及功能

QZ系列球型支(zhi)座(zuo)(zuo)是由上支(zhi)座(zuo)(zuo)板(ban)(ban)(ban)(ban)(ban)(ban)、下支(zhi)座(zuo)(zuo)板(ban)(ban)(ban)(ban)(ban)(ban)、凸(tu)形(xing)(xing)中(zhong)(zhong)間板(ban)(ban)(ban)(ban)(ban)(ban)及兩塊不同形(xing)(xing)狀的(de)(de)聚四(si)氟乙(yi)烯板(ban)(ban)(ban)(ban)(ban)(ban)組(zu)成。下支(zhi)座(zuo)(zuo)板(ban)(ban)(ban)(ban)(ban)(ban)中(zhong)(zhong)間為(wei)一(yi)凹(ao)形(xing)(xing)球面，同凸(tu)形(xing)(xing)中(zhong)(zhong)間包相對應，兩者(zhe)之間有一(yi)弧(hu)形(xing)(xing)四(si)氟板(ban)(ban)(ban)(ban)(ban)(ban)，通過求美棉與(yu)滑動來滿(man)足梁端的(de)(de)轉動；上座(zuo)(zuo)板(ban)(ban)(ban)(ban)(ban)(ban)上的(de)(de)不銹鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)與(yu)中(zhong)(zhong)間鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)上的(de)(de)另一(yi)四(si)氟板(ban)(ban)(ban)(ban)(ban)(ban)組(zu)成第二滑動面，完(wan)成梁體因(yin)溫差諸(zhu)多原(yuan)因(yin)所產(chan)生的(de)(de)伸縮位移(yi)。

QZ球型支座以傳(chuan)力可靠，各向轉動性(xing)能(neng)(neng)一致 轉動靈活的特點，不(bu)(bu)僅具備盆(pen)式橡膠(jiao)支座承(cheng)(cheng)載(zai)能(neng)(neng)力大(da)(da)(da)，水平(ping)位移大(da)(da)(da)等(deng)特點，而且(qie)能(neng)(neng)更好地適(shi)應大(da)(da)(da)轉角的需要(yao)，適(shi)用于寬橋、曲線橋。由(you)于承(cheng)(cheng)壓部(bu)件(jian)(jian)不(bu)(bu)使用橡膠(jiao)件(jian)(jian)，不(bu)(bu)存在(zai)橡膠(jiao)低(di)溫脆性(xing)等(deng)影響，因此特別適(shi)用于低(di)溫地區。