本文關(guān)鍵詞：虎門二橋坭洲水道橋主纜1960MPa鋅鋁合金鍍層鋼絲錨固試驗(yàn)研究　出處：《世界橋梁》2017年05期 　論文類型：期刊論文

  更多相關(guān)文章： 懸索橋 主纜 高強(qiáng)鋼絲 合金鍍層 錨固性能 試驗(yàn)

【摘要】：虎門二橋坭洲水道橋?yàn)?658+1 688)m雙塔雙跨懸索橋,主纜采用公稱直徑5mm、公稱抗拉強(qiáng)度1 960MPa鋅鋁合金鍍層鋼絲,鋼絲采用國(guó)產(chǎn)高強(qiáng)鋼絲盤條(青鋼、寶鋼)制作。為得到該橋鋼絲的灌錨工藝參數(shù),確保鋼絲錨固性能,對(duì)2種鋼絲進(jìn)行錨固試驗(yàn),分析不同濃度的清洗助鍍液、不同灌錨溫度和不同錨固長(zhǎng)度對(duì)鋼絲錨固性能的影響。結(jié)果表明:合理的ZnCl2·NH4Cl清洗助鍍液濃度對(duì)鋼絲與鋅銅合金的粘結(jié)強(qiáng)度的增加有一定的作用,最佳濃度為100g/L;清洗助鍍液濃度為100g/L時(shí),灌錨溫度對(duì)于鋼絲強(qiáng)度有一定的影響,灌錨溫度460±10℃是比較合適的溫度;青鋼、寶鋼國(guó)產(chǎn)盤條加工的鋼絲最小錨固長(zhǎng)度分別為80mm、100mm;擬選錨杯錨固段尺寸(過(guò)渡段145mm,錨固段290mm)完全能夠滿足錨固需要;索股的破斷荷載滿足設(shè)計(jì)及相關(guān)驗(yàn)收規(guī)范的要求。
[Abstract]:Nizhou Shuidao Bridge of Humen No.2 Bridge is a double tower and double span suspension bridge with 658168m. The main cable is a steel wire with nominal diameter of 5mm and nominal tensile strength of 1,960MPa. The steel wire is made of domestic high strength wire wire rod (Qinggang, Baosteel). In order to obtain the technical parameters of the bridge steel wire and ensure the anchoring performance of the steel wire, the anchoring tests of two kinds of steel wire are carried out. Analysis of different concentrations of cleaning assisted bath. The effect of different anchoring temperature and length on the anchoring properties of steel wire was studied. Reasonable concentration of ZnCl2 路NH4Cl cleaning assisted plating bath has a certain effect on the bond strength between steel wire and Zn-Cu alloy. The best concentration was 100 g / L; When the concentration of cleaning assistant bath is 100g / L, the anchor temperature has a certain effect on the strength of steel wire, and the anchor temperature of 460 鹵10 鈩，

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