修建松江桥时,为了能在气温较低的情况下,使混凝土达到预期强度,并保证节约水泥、提高质量和提前通车,曾采用了低流动性混凝土(坍落度0～3公分)。施工中虽然发生了一些质量事故,但后来在其他的桥梁施工中有了改进,从而证实了就地浇注桥梁上部构造,可以利用低流动性混凝土,并能收到好、快、省的效果。现在简单介绍如下: Construction of Songjiang Bridge, in order to be able to achieve the expected strength of concrete in the case of low temperatures, and to ensure that saving cement, improve quality and advance to traffic, had used low-mobility concrete (slump 0 to 3 cm). Although some quality accidents occurred during the construction, improvements were made later on other bridges, which confirmed the in-situ pouring of the upper structure of the bridge, which can make use of low-flow concrete and receive good, fast and provincial effects. Now briefly described as follows: