某斜拉桥主塔墩承台大体积混凝土配合比优化设计

Optimal Design of Mix Proportioning of Massive Concrete for Pylon Pier Footings of a Cable-Stayed Bridge

从材料角度论述了大体积混凝土的配制原则,通过大量的试验研究,配制出抗裂性能好、绝热温升低的大体积混凝土。本试验研究为C40主塔墩承台大体积混凝土温度应力计算提供了依据,也为大体积混凝土温控施工提供了有力的保障。

The principles for proportioning and mixing massive concrete are elaborated from aspect of materials. Based on a great deal of test study, the massive concrete having both good anti-cracking performance and low adiabatic temperature rise is successfully mixed. The study herewith provides basis for temperature stress calculation of C40 massive concrete used for pylon pier footings of a cable-stayed bridge and also the reliable guarantee for temperature control construction of the massive concrete.