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表4检验项目细度(%)(80μm筛余)氧化镁含量(%)总碱含量(%)含水率(%)氯离子含量1工程概述拉萨河特大桥是青藏铁路线上的一个标志性工程,它位于拉萨市境内,距青藏铁路终点拉萨火车站约2公里,拉萨河特大桥主桥采用(36+72+108+72+36)m钢管混凝土拱连续梁结构形式。引桥采用3×32.7m
Table 4 Test items Fineness (80μm sieve residue) Magnesium oxide content (%) Total alkali content (%) Moisture content (%) Chloride ion content 1 Engineering Overview Lhasa River Bridge is a landmark on the Qinghai-Tibet Railway It is located in the territory of Lhasa, about 2 km from the Lhasa Railway Station at the end of the Qinghai-Tibet Railway. The main bridge of Lhasa River Super Large Bridge adopts (36 + 72 + 108 + 72 + 36) m CFST arch continuous beam structure. Approach the bridge with 3 × 32.7m