纳(na)(na)界河特大(da)案件桥属(shu)于(yu)林织(zhi)(zhi)（新）线(xian)林歹南至织(zhi)(zhi)金(jin)段坪子上(shang)(shan?g)至大(da)冲范(fan)围(wei)内(nei)，清镇市(shi)与织(zhi)(zhi)金(jin)县交(jiao)壤处的(de)大(da)寨村的(de)纳(na)(na)界河上(shang)(shang)，该桥上(shang)(shang)面计(ji)程表为ZDK24+008??.00。主桁为352m上(shang)(shang)承式(shi)钢桁拱(gong)，引(yin)桥及(ji)拱(gong)上(shang)(shang)梁(liang)跨计(ji)划为3×24简(jian)支(zhi)(zhi)梁(liang)+1×32简(jian)支(zhi)(zhi)梁(liang)+2×48T构(gou)+11×24.7钢混连接梁(liang)+2×48T构(gou)+7×32简(jian)支(zhi)(zhi)梁(liang)，长约810.10m，。全桥至关重要(yao)内(nei)容为Q370qE、Q345qE、Q345qD，全桥总(zong)重约9000吨(dun)。

我企业就职该桥装(zhuang)置(zhi)设备基础土建(jian)工程，该桥要具备总柱距长、规(gui)划繁杂、基础土建(jian)工程难度弹性(xing)系数大(da)等独特的(de)(de)。跨(kua)(kua)径安装(zhuang)：主桥具体情况(kuang)跨(kua)(kua)径为(wei)L=352m，拱(gong)(gong)座必然齐全置(zhi)放岸坡(po)一致线内；矢(shi)跨(kua)(kua)比求矢(shi)高：主桥为(wei)上承式提篮(lan)钢(gang)(gang)桁(heng)拱(gong)(gong)规(gui)划，矢(shi)高64.5m，矢(shi)跨(kua)(kua)比1/5.46；拱(gong)(gong)轴(zhou)之间(jian)(jian)(jian)(jian)线在(zai)XOZ立休及竖(shu)(shu)向立休内为(wei)悬(xuan)链线，拱(gong)(gong)轴(zhou)弹性(xing)系数m=1.5。主桥为(wei)上承式提篮(lan)钢(gang)(gang)桁(heng)拱(gong)(gong)规(gui)划，主桁(heng)为(wei)N型架，拱(gong)(gong)顶处弦杆总平面图(tu)图(tu)投(tou)屏(ping)屏(ping)幕(mu)(mu)机桁(heng)高8.0m，拱(gong)(gong)脚处弦杆总平面图(tu)图(tu)投(tou)屏(ping)屏(ping)幕(mu)(mu)机桁(heng)高13.0m，节间(jian)(jian)(jian)(jian)层度投(tou)屏(ping)屏(ping)幕(mu)(mu)机长宽8.2333m。拱(gong)(gong)顶处主桁(heng)之间(j??ian)(jian)(jian)(jian)距8.0m，拱(gong)(gong)角(jiao)处主桁(heng)之间(jian)(jian)(jian)(jian)距27.0m，弦杆内偏角(jiao)8.37867°。弦杆受力之间(jian)(jian)(jian)(jian)至(zhi)拱(gong)(gong)角(jiao)具体情况(kuang)之间(jian)(jian)(jian)(jian)的(de)(de)竖(shu)(shu)向每隔64.5m。

图1：纳界河江大桥工程现厂

图2：纳界河高架桥地面上课程

图3：纳界河大桥全貌