Abstract:Taking the ecological embankment construction project of the Nansha Comprehensive Cultural and Sports Complex (south of the 21st tidal creek) as an example, the impact of ecological embankment loading on the safety of existing expressway bridges in deep soft soil areas is discussed. The three-dimensional finite difference method is used to optimize and study the bridge protection and reinforcement scheme. Research findings demonstrate that expanding both the width and depth of the bridge protection reinforcement zone can effectively reduce the additional bending moment of bridge pile foundations, in which the effect of increasing the depth is more significant. Finally, it is determined to adopt a combined treatment scheme of single-pile mixing piles and triple-axis mixing piles. Through comparison of numerical simulation deformation values with actual monitoring data, the reliability of the numerical model is verified. The maximum horizontal displacement of bridge piers is less than the allowable value specified in relevant standards, and the impact of ecological embankment loading on bridge structures is controllable, which provides reference and guidance for the design of similar projects.
