基于动态规划理论的大型基坑开挖路径的分析方法

Analytical Method for Large Foundation Pit Excavation Path Based on Dynamic Planning Theory

为减少建筑基坑开挖对基坑围护结构变形的影响,提出利用动态规划理论分析大型基坑分区开挖最优路径的方法。结合工程实例,以基坑最大竖向位移和地下连续墙最大水平位移为目标函数,建立了基坑开挖路径分析的动态规划模型,并分析出了现有地质条件下基坑施工的最优开挖路径。其分析方法与结果可供类似工程参考。

To reduce the deformation of pit retaining structure caused by building foundation excavation, this paper introduces the dynamic programming theory to analyze the optimal excavation path. Combined with real example, the dynamic programming model is built for foundation pit projects based on the maximum vertical displacement of the foundation pit and the maximum horizontal displacement of the underground continuous wall. This model works out the optimal excavation path under the existed geological conditions. Such methods and results of this analysis can be reference for similar projects.