Optimized Design of Foundation Pit Engineering Above Underpass Tunnel Based on Neural Network Algorithm

Foundation pit project is a very complex process, involving many aspects, including geological conditions, the surrounding environment and various construction equipment and other factors, there are many uncertainties in the construction process, and therefore, it is necessary to optimize the analysis of these various elements affecting the foundation pit project. In the actual work, there are often various problems. In the actual construction process, due to various factors, the support system often causes large deviation or displacement, so in order to effectively control and reduce the excavation risk of the foundation pit must be optimized analysis and related design work; at the same time, we must also take into account the impact of the change in the stress-strain state of the enclosure structure, so that it can ensure the safety of the premise to minimize the cost of the project. As a result, the obtained values of the scheme category’s design variable of optimal scheme are number of longitudinal blocks of foundation pit excavation/PCS is 6, anti-float plate/m of thickness is 0.7, uplift pile/m diameter is 0.6, respectively.