纳界河袭警案桥(qiao)是在林织(zhi)（新）线林歹(dai)南至(zhi)织(zhi)金段坪子??(zi)上(shang)至(zhi)大冲范围内(nei)，?清镇市(shi)与织(zhi)金县交壤(rang)处的大寨(zhai)村的纳界河上(shang)，该(gai)桥(qiao)中(zhong)部飞机航程为ZDK24+008.00。主桁(heng)为352m上(shang)承(cheng)式钢桁(heng)拱(gong)(gong)，引桥(qiao)及拱(gong)(gong)上(shang)梁(liang)(liang)跨(kua)科(ke)学(xue)安(an)排(pai)为3×24简支梁(liang)(liang)+1×32简支梁(liang)(liang)+2×48T构+11×24.7钢混聯系梁(liang)(liang)+2×48T构+7×32简支梁(liang)(liang)，主跨(kua)810.10m，。全桥(qiao)首要任务质料(liao)为Q370qE、Q345qE、Q345qD，全桥(qiao)总重(zhong)约(yue)9000吨。

我子公(gong)司担(dan)负该桥(qiao)提升装置进(jin)行(xing)，该桥(qiao)享有(you)总跨径(jing)长、分(fen)布复杂化(hua)、进(jin)行(xing)难度比率(lv)大等特(te)性。跨径(jing)制定(ding)：主桥(qiao)真正跨径(jing)为(wei)(wei)L=352m，拱(gong)座其实完好(hao)置放岸坡始终不变线(xian)内；矢跨如(ru)果矢高(gao)：主桥(qiao)为(wei)(wei)上承式提篮钢(gang)桁(heng)拱(gong)分(fen)布，矢高(gao)64.5m，矢跨比1/5.46；拱(gong)轴期(qi)(qi)间(jian)(jian)线(xian)在XOZ有(you)立(li)体感式及竖(shu)向(xiang)有(you)立(li)体感式内为(wei)(wei)悬链线(xian)?，拱(gong)轴比率(lv)m=1.5。主桥(qiao)为(wei)(wei)上承式提篮钢(gang)桁(heng)拱(gong)分(fen)布，主桁(heng)为(wei)(wei)N型架，拱(gong)顶(ding)处(chu)弦杆外(wai)外(wai)立(li)面(mian)(mian)投(tou)(tou)屏桁(heng)高(gao)8.0m，拱(gong)脚处(chu)弦杆外(wai)外(wai)立(li)面(mian)(mian)投(tou)(tou)屏桁(heng)高(gao)13.0m，节间(jian)(jian)阶(jie)段投(tou)(tou)屏段长度8.2333m。拱(gong)顶(ding)处(chu)主桁(heng)期(qi)(qi)间(jian)(jian)距(ju)8.0m，拱(gong)角处(chu)主桁(heng)期(qi)(qi)间(jian)(jian)距(ju)27.0m，弦杆内坡度8.37867°。弦杆剖面(mian)(mian)期(qi)(qi)间(jian)(jian)至(zhi)拱(gong)角真正期(qi)(qi)间(jian)(jian)的竖(shu)向(xiang)间(jian)(jian)格64.5m。

图1：纳界河特大桥使用场地

图2：纳界河立交桥面完课

图3：纳界河大桥全貌