平湖盆式平湖橡膠支座的安裝(zhuang)是為(wei)了保證橋(qiao)(qiao)梁的安全使(shi)用(yong)、橋(qiao)(qiao)梁上下部結構(gou)間力的傳遞符合設(she)計要求和橋(qiao)(qiao)梁使(shi)用(yong)功能(neng)正常(chang)發揮的重(zhong)要環節之一。在施工過(guo)程中(zhong)，應掌握好支座的安裝(zhuang)質(zhi)量及控(kong)制要點。

　　平湖盆式平湖橡膠支座克服了我們以往板式平湖橡膠支座的一(yi)些特點(dian)，其主要產品構造特點(dian)有兩個：

　　1、是將橡膠塊放(fang)置凹形的缸盆內，使橡膠處于有側限受壓狀態，大(da)大(da)提高(gao)了支座的承載力;

　　2、是利用嵌放在金屬盆頂面的填充四氟乙烯板與不銹鋼板相對摩擦系數小的特性，保證了活動支座能夠滿足梁水平移動的要求。所以平湖盆式平湖橡膠支座一經問世，就被(bei)廣泛應用于(yu)大、中(zhong)(zhong)型橋(qiao)梁和城(cheng)市高架(jia)橋(qiao)中(zhong)(zhong)。

　　盆式平湖橡膠支座分為固定支(zhi)(zhi)(zhi)(zhi)座(zuo)和(he)活(huo)(huo)(huo)動(dong)(dong)(dong)(dong)支(zhi)(zhi)(zhi)(zhi)座(zuo)。活(huo)(huo)(huo)動(dong)(dong)(dong)(dong)支(zhi)(zhi)(zhi)(zhi)座(zuo)又有單(dan)(dan)向(xiang)活(huo)(huo)(huo)動(dong)(dong)(dong)(dong)支(zhi)(zhi)(zhi)(zhi)座(zuo)和(he)雙(shuang)向(xiang)活(huo)(huo)(huo)動(dong)(dong)(dong)(dong)支(zhi)(zhi)(zhi)(zhi)座(zuo)。一般來說，橋梁固定端(duan)選(xuan)用(yong)固定支(zhi)(zhi)(zhi)(zhi)座(zuo)，活(huo)(huo)(huo)動(dong)(dong)(dong)(dong)端(duan)選(xuan)用(yong)活(huo)(huo)(huo)動(dong)(dong)(dong)(dong)支(zhi)(zhi)(zhi)(zhi)座(zuo)。對于盆式(shi)雙(shuang)向(xiang)活(huo)(huo)(huo)動(dong)(dong)(dong)(dong)支(zhi)(zhi)(zhi)(zhi)座(zuo)能在(zai)水平面內任(ren)意方向(xiang)移動(dong)(dong)(dong)(dong)。因此，彎(wan)橋的(de)活(huo)(huo)(huo)動(dong)(dong)(dong)(dong)墩(dun)臺上(shang)應選(xuan)擇(ze)這種(zhong)制作(zuo)。至(zhi)于單(dan)(dan)向(xiang)活(huo)(huo)(huo)動(dong)(dong)(dong)(dong)支(zhi)(zhi)(zhi)(zhi)座(zuo)，可(ke)在(zai)直橋中使用(yong)。但應注意，只(zhi)有當(dang)活(huo)(huo)(huo)動(dong)(dong)(dong)(dong)墩(dun)上(shang)只(zhi)有一個支(zhi)(zhi)(zhi)(zhi)座(zuo)，或者支(zhi)(zhi)(zhi)(zhi)座(zuo)間橫向(xiang)溫度伸(shen)縮(suo)量很小的(de)情況(kuang)下才宜選(xuan)用(yong)。