（一）、結構特點(dian)及功能

QZ系(xi)列球型支(zhi)座(zuo)(zuo)是由上(shang)(shang)(shang)支(zhi)座(zuo)(zuo)板(ban)(ban)、下支(zhi)座(zuo)(zuo)板(ban)(ban)、凸形(xing)中(zhong)間(jian)板(ban)(ban)及(ji)兩塊(kuai)不(bu)同(tong)形(xing)狀的聚四氟乙烯板(ban)(ban)組成(cheng)。下支(zhi)座(zuo)(zuo)板(ban)(ban)中(zhong)間(jian)為一凹形(xing)球面，同(tong)凸形(xing)中(zhong)間(jian)包相對應(ying)，兩者(zhe)之間(jian)有(you)一弧形(xing)四氟板(ban)(ban)，通過求(qiu)美棉(mian)與滑(hua)(hua)動來(lai)滿足(zu)梁(liang)端的轉動；上(shang)(shang)(shang)座(zuo)(zuo)板(ban)(ban)上(shang)(shang)(shang)的不(bu)銹鋼板(ban)(ban)與中(zhong)間(jian)鋼板(ban)(ban)上(shang)(shang)(shang)的另(ling)一四氟板(ban)(ban)組成(cheng)第二滑(hua)(hua)動面，完成(cheng)梁(liang)體因溫(wen)差諸多原因所產生的伸縮位移。

QZ球型支座以傳(chuan)力(li)可靠，各向轉動(dong)性能(neng)一致 轉動(dong)靈(ling)活的特點(dian)，不僅具備盆式(shi)橡(xiang)(xiang)膠支座承(cheng)(cheng)載能(neng)力(li)大，水平位(wei)移(yi)大等特點(dian)，而且能(neng)更(geng)好地適應大轉角的需要，適用于寬橋、曲線橋。由于承(cheng)(cheng)壓部件(jian)不使用橡(xiang)(xiang)膠件(jian)，不存在橡(xiang)(xiang)膠低溫脆性等影響，因此特別適用于低溫地區。