圓形板式開原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。其次圓形開原橡膠支座關(guan)于梁(liang)體變形（位移和轉(zhuan)角）的拘謹(jin)應盡大(da)概地小(xiao)，以契(qi)合梁(liang)體自在彈性(xing)及轉(zhuan)化(hua)的須要。末(mo)尾支座應具有便于安頓、維(wei)護、維(wei)建和互換(huan)的特性(xing)。

    矩形板式開原橡膠支座板式開原橡膠支座有(you)(you)遍及板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)支(zhi)(zhi)(zhi)座(zuo)和四(si)氟板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)支(zhi)(zhi)(zhi)座(zuo)之分。遍及板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)支(zhi)(zhi)(zhi)座(zuo)有(you)(you)矩形(xing)(xing)(xing)、圓(yuan)形(xing)(xing)(xing)、坡(po)形(xing)(xing)(xing)、戴球(qiu)(qiu)冠圓(yuan)形(xing)(xing)(xing)等，有(you)(you)用(yong)(yong)于中小(xiao)跨度橋(qiao)梁(liang)(liang)。圓(yuan)形(xing)(xing)(xing)板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)支(zhi)(zhi)(zhi)座(zuo)和戴球(qiu)(qiu)冠圓(yuan)形(xing)(xing)(xing)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)支(zhi)(zhi)(zhi)座(zuo)具(ju)有(you)(you)平(ping)面上的(de)各向共性既(ji)不具(ju)有(you)(you)目標性，圓(yuan)形(xing)(xing)(xing)板(ban)(ban)(ban)(ban)上的(de)球(qiu)(qiu)冠可組織受力情形(xing)(xing)(xing)，不只有(you)(you)用(yong)(yong)于遍及橋(qiao)梁(liang)(liang)，也有(you)(you)用(yong)(yong)于各樣變位攙雜的(de)高架橋(qiao)和立接橋(qiao)。而(er)坡(po)形(xing)(xing)(xing)板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)支(zhi)(zhi)(zhi)座(zuo)的(de)頂面具(ju)有(you)(you)必(bi)定的(de)斜(xie)度，有(you)(you)用(yong)(yong)于縱坡(po)和橫坡(po)都(dou)較大的(de)馬路橋(qiao)梁(liang)(liang)。這類板(ban)(ban)(ban)(ban)式(shi)(shi)(shi)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)支(zhi)(zhi)(zhi)座(zuo)的(de)運動機理是通過(guo)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)的(de)剪切(qie)變形(xing)(xing)(xing)來(lai)實(shi)施程度位移(yi)，運用(yong)(yong)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)的(de)不勻稱彈性緊縮來(lai)實(shi)施轉化。

    矩形板式橡膠支座的(de)(de)(de)極限(xian)裝載力均(jun)比圓(yuan)形(xing)(xing)(xing)(xing)橡膠(jiao)支座的(de)(de)(de)大(da)(da)，然(ran)而是極限(xian)抗壓強度(du)(du)卻比圓(yuan)形(xing)(xing)(xing)(xing)的(de)(de)(de)小(xiao)，并且矩形(xing)(xing)(xing)(xing)的(de)(de)(de)位移比圓(yuan)形(xing)(xing)(xing)(xing)的(de)(de)(de)大(da)(da)，基本(ben)上無(wu)妨(fang)揣度(du)(du)圓(yuan)形(xing)(xing)(xing)(xing)的(de)(de)(de)本(ben)能略微的(de)(de)(de)強于矩形(xing)(xing)(xing)(xing)的(de)(de)(de)橡膠(jiao)支座。從另一個視(shi)點來道，在承(cheng)擔相通的(de)(de)(de)力的(de)(de)(de)功率下，矩形(xing)(xing)(xing)(xing)橡膠(jiao)支座采取(qu)了較大(da)(da)的(de)(de)(de)底面積然(ran)而是極限(xian)抗壓強度(du)(du)卻不(bu)底面積較小(xiao)的(de)(de)(de)圓(yuan)形(xing)(xing)(xing)(xing)橡膠(jiao)支座的(de)(de)(de)大(da)(da)，證明的(de)(de)(de)偶爾在轉變外(wai)形(xing)(xing)(xing)(xing)的(de)(de)(de)情(qing)形(xing)(xing)(xing)(xing)下大(da)(da)概會使橡膠(jiao)支座的(de)(de)(de)資料取(qu)得更大(da)(da)程度(du)(du)的(de)(de)(de)運(yun)用。