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7号主墩为双柱式薄壁柔性墩,墩柱两肢间净距为7米,与斜腿交汇点以上采用等截面,余下部分横桥向按1:100放坡,等截面部分为顺桥向4.5米,横桥向7.5米,四周设半径0.5m圆弧过渡,墩柱根部宽度9.26m,混凝土标号为C50。结合北盘江特大桥主墩墩柱的施工,浅谈墩柱的施工工艺,准备条件,钢筋制作要求和混凝土的浇筑过程。旨在为同类桩基施工提供一定参考及借鉴价值。
The No. 7 main pier is a double-column thin-walled flexible pier. The clearance between the two limbs of the pier is 7 meters. The cross section is above the intersection with the inclined leg. The remaining part of the transverse bridge is graded 1: 100. 4.5 meters along the bridge to the bridge to 7.5 meters, surrounded by a radius of 0.5m arc transition, pier root width of 9.26m, concrete label C50. Combined with the construction of the main pier piers of Beipanjiang Super-Large Bridge, the construction technology, preparation conditions, reinforcement production requirements and concrete pouring process are briefly discussed. The purpose is to provide some reference and reference value for the construction of similar pile foundation.