纳(na)界河袭警案桥(qiao)是在林织(zhi)（新(xin)）线林歹(dai)南至织(zhi)金段坪子上至大(da)冲差值(zhi)，清镇市(shi)与织(zhi)金县交壤处的大(da)寨村的纳(na)界河上，该桥(qiao)当中行程(cheng)为(wei)(wei)ZDK24+008.00。主桁(heng)为(wei)(wei)35??2m上承式钢桁(heng)拱，引(yin)桥(qiao)及(ji)拱上梁(liang)跨安装为(wei)(wei)3×24简(jian)支梁(liang)+1×32简(jian)支梁(liang)+2×48T构(gou)+11×24.7钢混连接(jie)梁(liang)+2×48T构(gou)+7×32简(jian)支梁(liang)，起点终点810.10m，。全桥(qiao)根(gen)本資料为(wei)(wei)Q370qE、Q345qE、Q345qD，??全桥(qiao)总重约9000吨。

我(wo)子公(gong)司兼任该(gai)(gai)桥(qiao)(qiao)(qiao)系统道路(lu)工(gong)程(cheng)施(shi)工(gong)，该(gai)(gai)桥(qiao)(qiao)(qiao)应(ying)有(you)总柱距(ju)长、方(fang)式(shi)(shi) 繁(fan)多(duo)、道路(lu)工(gong)程(cheng)施(shi)工(gong)一定的(de)难(nan)度大等优点。跨(kua)径(jing)设置：主(zhu)桥(qiao)(qiao)(qiao)现实(shi)的(de)跨(kua)径(jing)为(wei)(wei)L=352m，拱(gong)(gong)座其实(shi)详(xiang)尽处(chu)于岸(an)坡没变线(xian)内；矢(shi)跨(kua)还(hai)有(you)矢(shi)高：主(zhu)桥(qiao)(qiao)(qiao)为(wei)(wei)上承式(shi)(shi)提(ti)篮钢桁拱(gong)(gong)方(fang)式(shi)(shi) ，矢(shi)高64.5m，矢(shi)跨(kua)比(bi)1/5.46；拱(gong)(gong)轴中线(xian)在XOZ有(you)3d立体感(gan)及竖向有(you)3d立体感(gan)内为(wei)(wei)悬(xuan)链(lian)线(xian)，拱(gong)(gong)轴公(gong)式(shi)(shi)m=1.5。主(zhu)桥(qiao)(qiao)(qiao)为(wei)(wei)上??承式(shi)(shi)提(ti)篮钢桁拱(gong)(gong)方(fang)式(shi)(shi) ，主(zhu)桁为(wei)(wei)N型架(jia)，拱(gong)(gong)顶处(chu)弦杆平面图投(tou)屏(ping)仪(yi)桁高8.0m，拱(gong)(gong)脚处(chu)弦杆平面图投(tou)屏(ping)仪(yi)桁高13.0m，节(jie)间(jian)程(cheng)度上投(tou)?屏(ping)仪(yi)间(jian)距(ju)8.2333m。拱(gong)(gong)顶处(chu)主(zhu)桁中距(ju)8.0m，拱(gong)(gong)角处(chu)主(zhu)桁中距(ju)27.0m，弦杆内倾斜角8.37867°。弦杆载面中至拱(gong)(gong)角现实(shi)的(de)中的(de)竖向间(jian)距(ju)64.5m。

图1：纳界河立交桥建筑施工直播

图2：纳界河特大桥面课程

图3：纳界河大桥全貌