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本文结合苏通大桥重点工程建设,针对其主体结构部位(超大体积承台、墩身和大型箱梁、超高索塔和连续刚构梁)的不同特点,从高性能混凝土的技术要求、原材料的质量,进行了不同结构部位高性能混凝土的配合比、基本性能、耐久性与应用研究,阐明了I级粉煤灰掺量及聚羧酸高性能减水剂的复掺技术对千米级跨江大桥不同结构部位混凝土性能的影响规律。
According to the different characteristics of the main structural parts (super large-size caps, piers and large box girders, super-high pylon and continuous rigid frame beams), this paper analyzes the technical requirements of high-performance concrete, raw materials Of the quality of different parts of the performance of high-performance concrete mix, the basic performance, durability and application of research, clarify the I-level fly ash content and polycarboxylate superplasticizer complex doping technology for the kilometer-class Influence Laws of Concrete Performances of Different Structure Parts of Crossing River Bridge.