圓形板式相城橡膠支座是樹立在橋梁的上部結構與墩臺之間，是橋跨的支承部分，其功率是把上部結構的各樣載荷傳播到墩臺上，并無妨契合活載、混凝土中斷與徐變等要素發生的變位（位移和轉角），使上、下部結構的本質受力情形符合組織的結構估計圖式。橋梁支座最早必需有腳夠的裝載身手，以維護平安穩當地傳播支座反力。其次圓形相城橡膠支座關于梁(liang)體變(bian)形（位移和轉角(jiao)）的拘謹應盡大概地(di)小，以契合梁(liang)體自在(zai)彈(dan)性(xing)及轉化的須要。末尾支座應具有便于安頓、維護、維建和互換的特性(xing)。

    矩形板式相城橡膠支座板式相城橡膠支座有(you)(you)(you)遍(bian)及(ji)(ji)板(ban)(ban)式支(zhi)(zhi)座(zuo)和(he)四氟板(ban)(ban)式橡膠(jiao)(jiao)支(zhi)(zhi)座(zuo)之分。遍(bian)及(ji)(ji)板(ban)(ban)式橡膠(jiao)(jiao)支(zhi)(zhi)座(zuo)有(you)(you)(you)矩形(xing)(xing)(xing)、圓形(xing)(xing)(xing)、坡形(xing)(xing)(xing)、戴球(qiu)(qiu)(qiu)冠(guan)(guan)圓形(xing)(xing)(xing)等，有(you)(you)(you)用(yong)(yong)于(yu)中小跨度橋(qiao)梁。圓形(xing)(xing)(xing)板(ban)(ban)式橡膠(jiao)(jiao)支(zhi)(zhi)座(zuo)和(he)戴球(qiu)(qiu)(qiu)冠(guan)(guan)圓形(xing)(xing)(xing)橡膠(jiao)(jiao)支(zhi)(zhi)座(zuo)具有(you)(you)(you)平面(mian)上(shang)的(de)各向共性(xing)既(ji)不(bu)具有(you)(you)(you)目標性(xing)，圓形(xing)(xing)(xing)板(ban)(ban)上(shang)的(de)球(qiu)(qiu)(qiu)冠(guan)(guan)可組織受力情形(xing)(xing)(xing)，不(bu)只(zhi)有(you)(you)(you)用(yong)(yong)于(yu)遍(bian)及(ji)(ji)橋(qiao)梁，也有(you)(you)(you)用(yong)(yong)于(yu)各樣變位攙雜的(de)高架橋(qiao)和(he)立接橋(qiao)。而坡形(xing)(xing)(xing)板(ban)(ban)式橡膠(jiao)(jiao)支(zhi)(zhi)座(zuo)的(de)頂面(mian)具有(you)(you)(you)必(bi)定的(de)斜度，有(you)(you)(you)用(yong)(yong)于(yu)縱(zong)坡和(he)橫(heng)坡都較大的(de)馬路(lu)橋(qiao)梁。這類板(ban)(ban)式橡膠(jiao)(jiao)支(zhi)(zhi)座(zuo)的(de)運(yun)動機理是通過(guo)橡膠(jiao)(jiao)的(de)剪切變形(xing)(xing)(xing)來實(shi)施(shi)程(cheng)度位移，運(yun)用(yong)(yong)橡膠(jiao)(jiao)的(de)不(bu)勻稱(cheng)彈性(xing)緊縮來實(shi)施(shi)轉化。

    矩形板式橡膠支座的(de)(de)極(ji)限裝載(zai)力(li)均比(bi)圓(yuan)形(xing)(xing)(xing)(xing)橡(xiang)(xiang)膠支(zhi)座的(de)(de)大(da)，然而是極(ji)限抗壓強度(du)卻比(bi)圓(yuan)形(xing)(xing)(xing)(xing)的(de)(de)小，并且矩(ju)形(xing)(xing)(xing)(xing)的(de)(de)位(wei)移比(bi)圓(yuan)形(xing)(xing)(xing)(xing)的(de)(de)大(da)，基本(ben)上無妨(fang)揣度(du)圓(yuan)形(xing)(xing)(xing)(xing)的(de)(de)本(ben)能略微的(de)(de)強于矩(ju)形(xing)(xing)(xing)(xing)的(de)(de)橡(xiang)(xiang)膠支(zhi)座。從另一個視點來道(dao)，在(zai)承擔相通(tong)的(de)(de)力(li)的(de)(de)功(gong)率(lv)下，矩(ju)形(xing)(xing)(xing)(xing)橡(xiang)(xiang)膠支(zhi)座采取了較大(da)的(de)(de)底(di)面積(ji)然而是極(ji)限抗壓強度(du)卻不底(di)面積(ji)較小的(de)(de)圓(yuan)形(xing)(xing)(xing)(xing)橡(xiang)(xiang)膠支(zhi)座的(de)(de)大(da)，證明的(de)(de)偶爾在(zai)轉(zhuan)變(bian)外形(xing)(xing)(xing)(xing)的(de)(de)情形(xing)(xing)(xing)(xing)下大(da)概(gai)會使橡(xiang)(xiang)膠支(zhi)座的(de)(de)資料取得更大(da)程度(du)的(de)(de)運用。