关键词: 倒虹吸, 基坑, 不均匀沉降, 优化设计

Abstract: Luzhu River inverted siphon in Qiandao Lake water distribution project has some construction difficulties, such as adverse geological condition and many influence factors of surrounding environment. In this paper, the original design and layout of inverted siphon are optimized. The optimization scheme raises the water supply steel pipe on the right bank by 5 m. Based on the structural stability and construction conditions, a comprehensive comparison and analysis of the original scheme and the optimized scheme are made. The results show that the optimization scheme is feasible and has obvious advantages, such as reducing the amount of excavation and backfill of 1.3×10⁵ m³, shortening the construction time by three months and better protection of environment.

Key words: inverted siphon, foundation pit, uneven settlement, optimization design