支(zhi)(zhi)(zhi)撐(cheng)(cheng)(cheng)架(jia)(jia)﹔支(zhi)(zhi)(zhi)撐(cheng)(cheng)(cheng)架(jia)(jia)用(yong)(yong)于第(di)一排(pai)與(yu)第(di)二排(pai)析(xi)架(jia)(jia)的(de)連接。雙排(pai)單(dan)層橋(qiao),在每節析(xi)架(jia)(jia)(或加強(qiang)弦桿(gan))頂(ding)面中央(yang),水平安裝(zhuang)(zhuang)(zhuang)1個(ge)(ge)(ge)(ge)支(zhi)(zhi)(zhi)撐(cheng)(cheng)(cheng)架(jia)(jia)。雙排(pai)雙層時(shi),除(chu)在頂(ding)面安設1個(ge)(ge)(ge)(ge)支(zhi)(zhi)(zhi)撐(cheng)(cheng)(cheng)架(jia)(jia)外,還(huan)要在上(shang)層析(xi)架(jia)(jia)后(hou)端(duan)豎桿(gan)上(shang)安裝(zhuang)(zhuang)(zhuang)1個(ge)(ge)(ge)(ge)支(zhi)(zhi)(zhi)撐(cheng)(cheng)(cheng)架(jia)(jia)(首節析(xi)架(jia)(jia)前端(duan)豎桿(gan)也應安裝(zhuang)(zhuang)(zhuang)1個(ge)(ge)(ge)(ge))。架(jia)(jia)設三排(pai)橋(qiao)梁時(shi),支(zhi)(zhi)(zhi)撐(cheng)(cheng)(cheng)架(jia)(jia)安裝(zhuang)(zhuang)(zhuang)的(de)部位和數量(liang)與(yu)雙排(pai)橋(qiao)梁相同。安裝(zhuang)(zhuang)(zhuang)時(shi),將兩端(duan)的(de)4個(ge)(ge)(ge)(ge)空(kong)心(xin)套(tao)筒(tong)嵌入兩排(pai)析(xi)架(jia)(jia)的(de)支(zhi)(zhi)(zhi)撐(cheng)(cheng)(cheng)架(jia)(jia)孔(kong)內(nei),再用(yong)(yong)撐(cheng)(cheng)(cheng)架(jia)(jia)螺栓固定。