近日，我國第一座雙層立體分流城市公路大橋，同時也是第一座梁支撐式波形鋼腹板預應力混凝土組合斜拉橋南昌朝陽大橋順利建成通車。國內(nèi)預應力行業(yè)領(lǐng)軍-柳州歐維姆機械股份有限公司(以下簡稱歐維姆公司)，以科技創(chuàng)新產(chǎn)品為其做有力支撐，并給橋梁后期維護提供了可靠的技術(shù)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
南昌朝陽大橋位于江西南昌市，連接南昌市朝陽新城和紅角洲地區(qū)，是江西省第二座、世界第五座汽車人行雙層橋、世界最大孔位的帶索鞍的鋼絞線斜拉橋。其主橋主跨采用六塔七孔單索面矮塔斜拉橋方案，跨越贛江范圍全長約1560米，分為主橋和引橋兩部分，雙向8車道。機動車通道為主橋橋面，行人和非機動車通道在橋面下方的箱涵兩側(cè)，下層還可為過江行人和非機動車遮風擋雨，并在中間設(shè)置了兩側(cè)貫通的觀景平臺，為市民提供良好的休閑、觀光場所江西高速公路 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
作為世界最大孔位的帶索鞍的鋼絞線斜拉橋，斜拉索體系在斜拉橋中的作用不容忽視。主承包方為此采用了國內(nèi)預應力行業(yè)領(lǐng)軍企業(yè)柳州歐維姆公司的矮塔斜拉橋單側(cè)雙向可換式抗滑結(jié)構(gòu)體系，該結(jié)構(gòu)體系具備鋼絞線單根可換功能。
南昌朝陽大橋為單個橋塔設(shè)置9對拉索，斜拉索采用單絲涂覆環(huán)氧涂層無粘結(jié)預應力鋼絞線，塔上錨固采用分絲管索鞍錨固方式，索鞍型號為8種規(guī)格，其中99孔位的拉索規(guī)格為目前世界上矮塔斜拉橋體系采用的最大孔位數(shù)的拉索體系。該橋按技術(shù)規(guī)范要求對塔上索鞍的抗滑錨固性能進行試驗驗證，歐維姆公司根據(jù)該橋結(jié)構(gòu)特點，對相關(guān)抗滑結(jié)構(gòu)進行節(jié)段模型試驗研究，并邀請國家檢測中心的專業(yè)檢測人員進行現(xiàn)場驗證。試驗后專業(yè)人員表示：歐維姆公司的矮塔斜拉橋單側(cè)雙向可換式抗滑結(jié)構(gòu)體系滿足國際規(guī)范中對索鞍處抗滑錨固性能的要求，達到國際領(lǐng)先水平，給橋梁后期維護提供了可靠的技術(shù)方案。
建成后南昌朝陽大橋遠遠望去，橫跨贛江，六個塔柱在斜拉索的襯托下如同一個個“合”字造型，寓意“帆合連進”。多塔和單面拉索多樣組合，如同排列有序的一面面旗幟，象征著南昌人民齊頭并進謀發(fā)展，體現(xiàn)了“一江兩岸”城區(qū)珠聯(lián)璧合的盛景。
