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为节省工程投资,对八里湾泵站站下和站上翼墙进行优化设计。以站下翼墙为例,通过分两级平台的布置型式、墙后换填水泥土、设置减压平台等措施,降低了挡土高度,减小了墙后土压力。并通过计算确定了墙后二级平台距挡墙的最小距离、换填水泥土的力学性能指标和回填范围,减压平台的位置和长度,为以后类似工程设计问题积累了实践经验。
In order to save the project investment, optimize the design of the wing walls under the station and the station in Bali Bay. Take the standing wall of the wing as an example, through the arrangement of the two-stage platform, the replacement of cemented soil behind the wall and the installation of decompression platform, the height of the retaining wall is reduced and the earth pressure behind the wall is reduced. Through calculation, the minimum distance from the retaining wall to the second platform behind the wall is determined. The mechanical performance index and backfill area of the cement-soil are changed and the position and length of the decompression platform are changed. Therefore, practical experience is accumulated for similar engineering design problems.