近日，我国第一座双层立体分流城市公路大桥，同时也是第一座梁支撑式波形钢腹板预应力混凝土组合斜拉桥南昌朝阳大桥顺利建成通车。国内预应力行业领军-柳州欧维姆机械股份有限公司(以下简称欧维姆公司)，以科技创新产品为其做有力支撑，并给桥梁后期维护提供了可靠的技术方案江西高速公路 www.jxsjgs.com Recently, Chinas first double stereo shunt city road bridge, also be the first beam supporting type corrugated steel web plate combination of prestressed concrete cable-stayed bridge of nanchang chaoyang bridge was completed smoothly. Domestic prestressed industry leader - liuzhou Europe vimal machinery co., LTD. (hereinafter referred to as the wim company), to innovative products for its strong support of science and technology, and provides a reliable technology for bridge maintenance in jiangxi province highway at
南昌朝阳大桥位于江西南昌市，连接南昌市朝阳新城和红角洲地区，是江西省第二座、世界第五座汽车人行双层桥、世界最大孔位的带索鞍的钢绞线斜拉桥。其主桥主跨采用六塔七孔单索面矮塔斜拉桥方案，跨越赣江范围全长约1560米，分为主桥和引桥两部分，双向8车道。机动车通道为主桥桥面，行人和非机动车通道在桥面下方的箱涵两侧，下层还可为过江行人和非机动车遮风挡雨，并在中间设置了两侧贯通的观景平台，为市民提供良好的休闲、观光场所江西高速公路 Is located in nanchang city of jiangxi province, nanchang chaoyang bridge connecting nanchang chaoyang xincheng and red continent area, is second in jiangxi province, the worlds fifth car pedestrian double bridge, the worlds largest hole a strop saddle steel strand of cable-stayed bridge. Its main span mainspan USES six tower seven holes and single cable plane of short tower cable-stayed bridge across the river total length of about 1560 meters, is divided into two parts of the main bridge and approach of, 8 lanes. Mainly channel bridge, the bridge deck for vehicles and pedestrians and non-motor vehicles on both sides of the channel in bridge deck at the bottom of the box culvert, the lower still can zhefengdangyu for river-crossing pedestrians and non-motor vehicles, and set up in the middle on both sides of the well versed in the viewing platform, for citizens to provide a good place for leisure and tourism in jiangxi province highway www.jxsjgs.com
作为世界最大孔位的带索鞍的钢绞线斜拉桥，斜拉索体系在斜拉桥中的作用不容忽视。主承包方为此采用了国内预应力行业领军企业柳州欧维姆公司的矮塔斜拉桥单侧双向可换式抗滑结构体系，该结构体系具备钢绞线单根可换功能。
南昌朝阳大桥为单个桥塔设置9对拉索，斜拉索采用单丝涂覆环氧涂层无粘结预应力钢绞线，塔上锚固采用分丝管索鞍锚固方式，索鞍型号为8种规格，其中99孔位的拉索规格为目前世界上矮塔斜拉桥体系采用的最大孔位数的拉索体系。该桥按技术规范要求对塔上索鞍的抗滑锚固性能进行试验验证，欧维姆公司根据该桥结构特点，对相关抗滑结构进行节段模型试验研究，并邀请国家检测中心的专业检测人员进行现场验证。试验后专业人员表示：欧维姆公司的矮塔斜拉桥单侧双向可换式抗滑结构体系满足国际规范中对索鞍处抗滑锚固性能的要求，达到国际领先水平，给桥梁后期维护提供了可靠的技术方案。
建成后南昌朝阳大桥远远望去，横跨赣江，六个塔柱在斜拉索的衬托下如同一个个“合”字造型，寓意“帆合连进”。多塔和单面拉索多样组合，如同排列有序的一面面旗帜，象征着南昌人民齐头并进谋发展，体现了“一江两岸”城区珠联璧合的盛景。
